├── .gitignore ├── LICENSE ├── README.md ├── build.gradle ├── demo ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── com │ │ └── michaelflisar │ │ └── dragselectrecyclerview │ │ └── demo │ │ ├── MainActivity.java │ │ └── TestAutoDataAdapter.java │ └── res │ ├── layout │ ├── activity_main.xml │ └── test_cell.xml │ ├── menu │ └── menu.xml │ ├── mipmap-hdpi │ └── ic_launcher.png │ ├── mipmap-mdpi │ └── ic_launcher.png │ ├── mipmap-xhdpi │ └── ic_launcher.png │ ├── mipmap-xxhdpi │ └── ic_launcher.png │ ├── mipmap-xxxhdpi │ └── ic_launcher.png │ ├── values-w820dp │ └── dimens.xml │ └── values │ ├── colors.xml │ ├── dimens.xml │ ├── strings.xml │ └── styles.xml ├── files ├── demo.gif └── preview.jpg ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── library ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ └── java │ └── com │ └── michaelflisar │ └── dragselectrecyclerview │ ├── DragSelectTouchListener.java │ └── DragSelectionProcessor.java └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # Files for the Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | gen/ 14 | 15 | # Gradle files 16 | .gradle/ 17 | build/ 18 | 19 | # Local configuration file (sdk path, etc) 20 | local.properties 21 | 22 | # Proguard folder generated by Eclipse 23 | proguard/ 24 | 25 | # Log Files 26 | *.log 27 | 28 | # Android Studio Navigation editor temp files 29 | .navigation/ 30 | 31 | # Android Studio captures folder 32 | captures/ 33 | 34 | 35 | .idea/ 36 | #.gradle 37 | local.properties 38 | #.idea/workspace.xml 39 | #.idea/libraries 40 | #build 41 | *.iml 42 | #gradle/ 43 | #gradlew 44 | #gradlew.bat 45 | #gradle.properties -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. For the purposes of this definition, 18 | "control" means (i) the power, direct or indirect, to cause the 19 | direction or management of such entity, whether by contract or 20 | otherwise, or (ii) ownership of fifty percent (50%) or more of the 21 | outstanding shares, or (iii) beneficial ownership of such entity. 22 | 23 | "You" (or "Your") shall mean an individual or Legal Entity 24 | exercising permissions granted by this License. 25 | 26 | "Source" form shall mean the preferred form for making modifications, 27 | including but not limited to software source code, documentation 28 | source, and configuration files. 29 | 30 | "Object" form shall mean any form resulting from mechanical 31 | transformation or translation of a Source form, including but 32 | not limited to compiled object code, generated documentation, 33 | and conversions to other media types. 34 | 35 | "Work" shall mean the work of authorship, whether in Source or 36 | Object form, made available under the License, as indicated by a 37 | copyright notice that is included in or attached to the work 38 | (an example is provided in the Appendix below). 39 | 40 | "Derivative Works" shall mean any work, whether in Source or Object 41 | form, that is based on (or derived from) the Work and for which the 42 | editorial revisions, annotations, elaborations, or other modifications 43 | represent, as a whole, an original work of authorship. For the purposes 44 | of this License, Derivative Works shall not include works that remain 45 | separable from, or merely link (or bind by name) to the interfaces of, 46 | the Work and Derivative Works thereof. 47 | 48 | "Contribution" shall mean any work of authorship, including 49 | the original version of the Work and any modifications or additions 50 | to that Work or Derivative Works thereof, that is intentionally 51 | submitted to Licensor for inclusion in the Work by the copyright owner 52 | or by an individual or Legal Entity authorized to submit on behalf of 53 | the copyright owner. For the purposes of this definition, "submitted" 54 | means any form of electronic, verbal, or written communication sent 55 | to the Licensor or its representatives, including but not limited to 56 | communication on electronic mailing lists, source code control systems, 57 | and issue tracking systems that are managed by, or on behalf of, the 58 | Licensor for the purpose of discussing and improving the Work, but 59 | excluding communication that is conspicuously marked or otherwise 60 | designated in writing by the copyright owner as "Not a Contribution." 61 | 62 | "Contributor" shall mean Licensor and any individual or Legal Entity 63 | on behalf of whom a Contribution has been received by Licensor and 64 | subsequently incorporated within the Work. 65 | 66 | 2. Grant of Copyright License. Subject to the terms and conditions of 67 | this License, each Contributor hereby grants to You a perpetual, 68 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 69 | copyright license to reproduce, prepare Derivative Works of, 70 | publicly display, publicly perform, sublicense, and distribute the 71 | Work and such Derivative Works in Source or Object form. 72 | 73 | 3. Grant of Patent License. Subject to the terms and conditions of 74 | this License, each Contributor hereby grants to You a perpetual, 75 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 76 | (except as stated in this section) patent license to make, have made, 77 | use, offer to sell, sell, import, and otherwise transfer the Work, 78 | where such license applies only to those patent claims licensable 79 | by such Contributor that are necessarily infringed by their 80 | Contribution(s) alone or by combination of their Contribution(s) 81 | with the Work to which such Contribution(s) was submitted. If You 82 | institute patent litigation against any entity (including a 83 | cross-claim or counterclaim in a lawsuit) alleging that the Work 84 | or a Contribution incorporated within the Work constitutes direct 85 | or contributory patent infringement, then any patent licenses 86 | granted to You under this License for that Work shall terminate 87 | as of the date such litigation is filed. 88 | 89 | 4. Redistribution. You may reproduce and distribute copies of the 90 | Work or Derivative Works thereof in any medium, with or without 91 | modifications, and in Source or Object form, provided that You 92 | meet the following conditions: 93 | 94 | (a) You must give any other recipients of the Work or 95 | Derivative Works a copy of this License; and 96 | 97 | (b) You must cause any modified files to carry prominent notices 98 | stating that You changed the files; and 99 | 100 | (c) You must retain, in the Source form of any Derivative Works 101 | that You distribute, all copyright, patent, trademark, and 102 | attribution notices from the Source form of the Work, 103 | excluding those notices that do not pertain to any part of 104 | the Derivative Works; and 105 | 106 | (d) If the Work includes a "NOTICE" text file as part of its 107 | distribution, then any Derivative Works that You distribute must 108 | include a readable copy of the attribution notices contained 109 | within such NOTICE file, excluding those notices that do not 110 | pertain to any part of the Derivative Works, in at least one 111 | of the following places: within a NOTICE text file distributed 112 | as part of the Derivative Works; within the Source form or 113 | documentation, if provided along with the Derivative Works; or, 114 | within a display generated by the Derivative Works, if and 115 | wherever such third-party notices normally appear. The contents 116 | of the NOTICE file are for informational purposes only and 117 | do not modify the License. You may add Your own attribution 118 | notices within Derivative Works that You distribute, alongside 119 | or as an addendum to the NOTICE text from the Work, provided 120 | that such additional attribution notices cannot be construed 121 | as modifying the License. 122 | 123 | You may add Your own copyright statement to Your modifications and 124 | may provide additional or different license terms and conditions 125 | for use, reproduction, or distribution of Your modifications, or 126 | for any such Derivative Works as a whole, provided Your use, 127 | reproduction, and distribution of the Work otherwise complies with 128 | the conditions stated in this License. 129 | 130 | 5. Submission of Contributions. Unless You explicitly state otherwise, 131 | any Contribution intentionally submitted for inclusion in the Work 132 | by You to the Licensor shall be under the terms and conditions of 133 | this License, without any additional terms or conditions. 134 | Notwithstanding the above, nothing herein shall supersede or modify 135 | the terms of any separate license agreement you may have executed 136 | with Licensor regarding such Contributions. 137 | 138 | 6. Trademarks. This License does not grant permission to use the trade 139 | names, trademarks, service marks, or product names of the Licensor, 140 | except as required for reasonable and customary use in describing the 141 | origin of the Work and reproducing the content of the NOTICE file. 142 | 143 | 7. Disclaimer of Warranty. Unless required by applicable law or 144 | agreed to in writing, Licensor provides the Work (and each 145 | Contributor provides its Contributions) on an "AS IS" BASIS, 146 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 147 | implied, including, without limitation, any warranties or conditions 148 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A 149 | PARTICULAR PURPOSE. You are solely responsible for determining the 150 | appropriateness of using or redistributing the Work and assume any 151 | risks associated with Your exercise of permissions under this License. 152 | 153 | 8. Limitation of Liability. In no event and under no legal theory, 154 | whether in tort (including negligence), contract, or otherwise, 155 | unless required by applicable law (such as deliberate and grossly 156 | negligent acts) or agreed to in writing, shall any Contributor be 157 | liable to You for damages, including any direct, indirect, special, 158 | incidental, or consequential damages of any character arising as a 159 | result of this License or out of the use or inability to use the 160 | Work (including but not limited to damages for loss of goodwill, 161 | work stoppage, computer failure or malfunction, or any and all 162 | other commercial damages or losses), even if such Contributor 163 | has been advised of the possibility of such damages. 164 | 165 | 9. Accepting Warranty or Additional Liability. While redistributing 166 | the Work or Derivative Works thereof, You may choose to offer, 167 | and charge a fee for, acceptance of support, warranty, indemnity, 168 | or other liability obligations and/or rights consistent with this 169 | License. However, in accepting such obligations, You may act only 170 | on Your own behalf and on Your sole responsibility, not on behalf 171 | of any other Contributor, and only if You agree to indemnify, 172 | defend, and hold each Contributor harmless for any liability 173 | incurred by, or claims asserted against, such Contributor by reason 174 | of your accepting any such warranty or additional liability. 175 | 176 | END OF TERMS AND CONDITIONS 177 | 178 | APPENDIX: How to apply the Apache License to your work. 179 | 180 | To apply the Apache License to your work, attach the following 181 | boilerplate notice, with the fields enclosed by brackets "{}" 182 | replaced with your own identifying information. (Don't include 183 | the brackets!) The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ### DragSelectRecyclerView [![Release](https://jitpack.io/v/MFlisar/DragSelectRecyclerView.svg)](https://jitpack.io/#MFlisar/DragSelectRecyclerView) [![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-DragSelectRecyclerView-brightgreen.svg?style=flat)](https://android-arsenal.com/details/1/5152) 2 | 3 | ### What is it / What does it do? 4 | It's a simple one class `TouchListener` that can be attached to any RecyclerView and handles multi selection in google photos style via long pressing on an item and moving the finger up/down to select more items (it even scrolls if you reach the edges of the `RecyclerView`) 5 | 6 | ![Demo](https://github.com/MFlisar/DragSelectRecyclerView/blob/master/files/demo.gif?raw=true) 7 | 8 | ### Gradle (via [JitPack.io](https://jitpack.io/)) 9 | 10 | 1. add jitpack to your project's `build.gradle`: 11 | 12 | ```groovy 13 | repositories { 14 | maven { url "https://jitpack.io" } 15 | } 16 | ``` 17 | 18 | 2. add the compile statement to your module's `build.gradle`: 19 | 20 | ```groovy 21 | dependencies { 22 | compile 'com.github.MFlisar:DragSelectRecyclerView:0.3' 23 | } 24 | ``` 25 | 26 | ### Usage - General 27 | 28 | 1) Create the a touch listener like following 29 | 30 | ```groovy 31 | mDragSelectTouchListener = new DragSelectTouchListener() 32 | // check region OnDragSelectListener for more infos 33 | .withSelectListener(onDragSelectionListener) 34 | // following is all optional 35 | .withMaxScrollDistance(distance) // default: 16; defines the speed of the auto scrolling 36 | .withTopOffset(toolbarHeight) // default: 0; set an offset for the touch region on top of the RecyclerView 37 | .withBottomOffset(toolbarHeight) // default: 0; set an offset for the touch region on bottom of the RecyclerView 38 | .withScrollAboveTopRegion(enabled) // default: true; enable auto scrolling, even if the finger is moved above the top region 39 | .withScrollBelowTopRegion(enabled) // default: true; enable auto scrolling, even if the finger is moved below the top region 40 | .withDebug(enabled); // default: false; 41 | ``` 42 | 43 | 2) attach it to the `RecyclerView` 44 | 45 | ```groovy 46 | recyclerView.addOnItemTouchListener(mDragSelectTouchListener); 47 | ``` 48 | 49 | 3) on item long press, inform the listener so that it can start doing it's magic 50 | 51 | ```groovy 52 | // if one item is long pressed, we start the drag selection like following: 53 | // we just call this function and pass in the position of the first selected item 54 | mDragSelectTouchListener.startDragSelection(position); 55 | ``` 56 | 57 | ### Usage - OnDragSelectListener 58 | 59 | You have 3 options: 60 | 61 | * use a simple `DragSelectTouchListener.OnDragSelectListener` => you get notified over which items the user dragged or dragged back 62 | 63 | ```groovy 64 | onDragSelectionListener = new DragSelectTouchListener.OnDragSelectListener() { 65 | @Override 66 | public void onSelectChange(int start, int end, boolean isSelected) { 67 | // update your selection 68 | // range is inclusive start/end positions 69 | } 70 | } 71 | ``` 72 | 73 | * use a `DragSelectTouchListener.OnAdvancedDragSelectListener` => this is an extended version of the `DragSelectTouchListener.OnDragSelectListener` which will notify you about the start and end of the drag selection as well 74 | 75 | ```groovy 76 | onDragSelectionListener = new DragSelectTouchListener.OnAdvancedDragSelectListener() 77 | { 78 | @Override 79 | public void onSelectChange(int start, int end, boolean isSelected) { 80 | // update your selection 81 | // range is inclusive start/end positions 82 | } 83 | 84 | @Override 85 | public void onSelectionStarted(int start) { 86 | // drag selection was started at index start 87 | } 88 | 89 | @Override 90 | public void onSelectionFinished(int end) { 91 | // drag selection was finished at index start 92 | } 93 | }; 94 | ``` 95 | 96 | * **Preferred option:** use the `DragSelectionProcessor`, it implements the above mentioned interface and can be set up with 4 modes: 97 | * `Simple`: simply selects each item you go by and unselects on move back 98 | * `ToggleAndUndo`: toggles each items original state, reverts to the original state on move back 99 | * `FirstItemDependent`: toggles the first item and applies the same state to each item you go by and applies inverted state on move back 100 | * `FirstItemDependentToggleAndUndo`: toggles the item and applies the same state to each item you go by and reverts to the original state on move back 101 | 102 | The `DragSelectionProcessor` will take care to transform each event to the correct select/deselect event that must be handled by you afterwards. Therefore you must provide a `ISelectionHandler` in it's constructor. Just implement it's 3 simple functions and you're done. 103 | 104 | ```groovy 105 | onDragSelectionListener = new DragSelectionProcessor(new DragSelectionProcessor.ISelectionHandler() { 106 | @Override 107 | public Set getSelection() { 108 | // return a set of all currently selected indizes 109 | return selection; 110 | } 111 | 112 | @Override 113 | public boolean isSelected(int index) { 114 | // return the current selection state of the index 115 | return selected; 116 | } 117 | 118 | @Override 119 | public void updateSelection(int start, int end, boolean isSelected, boolean calledFromOnStart) { 120 | // update your selection 121 | // range is inclusive start/end positions 122 | // and the processor has already converted all events according to it'smode 123 | } 124 | }) 125 | // pass in one of the 4 modes, simple mode is selected by default otherwise 126 | .withMode(DragSelectionProcessor.Mode.FirstItemDependentToggleAndUndo); 127 | ``` 128 | 129 | A demo can be found here: [MainActivity.java](https://github.com/MFlisar/DragSelectRecyclerView/blob/master/demo/src/main/java/com/michaelflisar/dragselectrecyclerview/demo/MainActivity.java) 130 | 131 | ### TODO 132 | 133 | * support horizontal RecyclerViews... should be quite simple, but is not yet implemented 134 | 135 | ### Credits 136 | 137 | This library is heavily inspired and based on https://github.com/weidongjian/AndroidDragSelect-SimulateGooglePhoto 138 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | repositories { 5 | jcenter() 6 | } 7 | dependencies { 8 | classpath 'com.android.tools.build:gradle:2.3.0' 9 | 10 | // NOTE: Do not place your application dependencies here; they belong 11 | // in the individual module build.gradle files 12 | } 13 | } 14 | 15 | allprojects { 16 | repositories { 17 | jcenter() 18 | } 19 | } 20 | 21 | task clean(type: Delete) { 22 | delete rootProject.buildDir 23 | } 24 | -------------------------------------------------------------------------------- /demo/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /demo/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 25 5 | buildToolsVersion "25.0.2" 6 | 7 | defaultConfig { 8 | applicationId "com.michaelflisar.dragselectrecyclerview.demo" 9 | minSdkVersion 16 10 | targetSdkVersion 25 11 | versionCode 1 12 | versionName "1.0" 13 | 14 | } 15 | buildTypes { 16 | release { 17 | minifyEnabled false 18 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 19 | } 20 | } 21 | } 22 | 23 | dependencies { 24 | 25 | compile project(':library') 26 | 27 | compile "com.android.support:appcompat-v7:25.2.0" 28 | 29 | } 30 | -------------------------------------------------------------------------------- /demo/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in M:\SWDevelopment\AndroidSDK/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /demo/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | -------------------------------------------------------------------------------- /demo/src/main/java/com/michaelflisar/dragselectrecyclerview/demo/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.michaelflisar.dragselectrecyclerview.demo; 2 | 3 | import android.os.Bundle; 4 | import android.support.v7.app.AppCompatActivity; 5 | import android.support.v7.widget.GridLayoutManager; 6 | import android.support.v7.widget.RecyclerView; 7 | import android.support.v7.widget.Toolbar; 8 | import android.view.Menu; 9 | import android.view.MenuItem; 10 | import android.view.View; 11 | 12 | import com.michaelflisar.dragselectrecyclerview.DragSelectTouchListener; 13 | import com.michaelflisar.dragselectrecyclerview.DragSelectionProcessor; 14 | 15 | import java.util.HashSet; 16 | 17 | public class MainActivity extends AppCompatActivity 18 | { 19 | private DragSelectionProcessor.Mode mMode = DragSelectionProcessor.Mode.Simple; 20 | 21 | private Toolbar mToolbar; 22 | private DragSelectTouchListener mDragSelectTouchListener; 23 | private TestAutoDataAdapter mAdapter; 24 | 25 | private DragSelectionProcessor mDragSelectionProcessor; 26 | 27 | @Override 28 | protected void onCreate(Bundle savedInstanceState) 29 | { 30 | super.onCreate(savedInstanceState); 31 | setContentView(R.layout.activity_main); 32 | 33 | mToolbar = (Toolbar) findViewById(R.id.toolbar); 34 | mToolbar.setTitle("DragSelectRecyclerView"); 35 | setSupportActionBar(mToolbar); 36 | 37 | // 1) Prepare the RecyclerView (init LayoutManager and set Adapter) 38 | RecyclerView rvData = (RecyclerView) findViewById(R.id.rvData); 39 | GridLayoutManager glm = new GridLayoutManager(this, 3, GridLayoutManager.VERTICAL, false); 40 | rvData.setLayoutManager(glm); 41 | mAdapter = new TestAutoDataAdapter(this, 500); 42 | rvData.setAdapter(mAdapter); 43 | mAdapter.setClickListener(new TestAutoDataAdapter.ItemClickListener() 44 | { 45 | @Override 46 | public void onItemClick(View view, int position) 47 | { 48 | mAdapter.toggleSelection(position); 49 | } 50 | 51 | @Override 52 | public boolean onItemLongClick(View view, int position) 53 | { 54 | // if one item is long pressed, we start the drag selection like following: 55 | // we just call this function and pass in the position of the first selected item 56 | // the selection processor does take care to update the positions selection mode correctly 57 | // and will correctly transform the touch events so that they can be directly applied to your adapter!!! 58 | mDragSelectTouchListener.startDragSelection(position); 59 | return true; 60 | } 61 | }); 62 | 63 | // 2) Add the DragSelectListener 64 | mDragSelectionProcessor = new DragSelectionProcessor(new DragSelectionProcessor.ISelectionHandler() { 65 | @Override 66 | public HashSet getSelection() { 67 | return mAdapter.getSelection(); 68 | } 69 | 70 | @Override 71 | public boolean isSelected(int index) { 72 | return mAdapter.getSelection().contains(index); 73 | } 74 | 75 | @Override 76 | public void updateSelection(int start, int end, boolean isSelected, boolean calledFromOnStart) { 77 | mAdapter.selectRange(start, end, isSelected); 78 | } 79 | }) 80 | .withMode(mMode); 81 | mDragSelectTouchListener = new DragSelectTouchListener() 82 | .withSelectListener(mDragSelectionProcessor); 83 | updateSelectionListener(); 84 | rvData.addOnItemTouchListener(mDragSelectTouchListener); 85 | } 86 | 87 | // --------------------- 88 | // Selection Listener 89 | // --------------------- 90 | 91 | private void updateSelectionListener() 92 | { 93 | mDragSelectionProcessor.withMode(mMode); 94 | mToolbar.setSubtitle("Mode: " + mMode.name()); 95 | } 96 | 97 | // --------------------- 98 | // Menu 99 | // --------------------- 100 | 101 | @Override 102 | public boolean onCreateOptionsMenu(Menu menu) 103 | { 104 | getMenuInflater().inflate(R.menu.menu, menu); 105 | return true; 106 | } 107 | 108 | @Override 109 | public boolean onOptionsItemSelected(MenuItem item) 110 | { 111 | if (item.getItemId() == R.id.menu_clear) 112 | mAdapter.deselectAll(); 113 | if (item.getItemId() == R.id.menu_select_all) 114 | mAdapter.selectAll(); 115 | else if (item.getItemId() == R.id.mode_simple) 116 | { 117 | mMode = DragSelectionProcessor.Mode.Simple; 118 | updateSelectionListener(); 119 | } 120 | else if (item.getItemId() == R.id.mode_toggle) 121 | { 122 | mMode = DragSelectionProcessor.Mode.ToggleAndUndo; 123 | updateSelectionListener(); 124 | } 125 | else if (item.getItemId() == R.id.mode_first_item_dependant) 126 | { 127 | mMode = DragSelectionProcessor.Mode.FirstItemDependent; 128 | updateSelectionListener(); 129 | } 130 | else if (item.getItemId() == R.id.mode_first_item_dependant_toggle) 131 | { 132 | mMode = DragSelectionProcessor.Mode.FirstItemDependentToggleAndUndo; 133 | updateSelectionListener(); 134 | } 135 | return true; 136 | } 137 | } -------------------------------------------------------------------------------- /demo/src/main/java/com/michaelflisar/dragselectrecyclerview/demo/TestAutoDataAdapter.java: -------------------------------------------------------------------------------- 1 | package com.michaelflisar.dragselectrecyclerview.demo; 2 | 3 | import android.content.Context; 4 | import android.graphics.Color; 5 | import android.support.v7.widget.RecyclerView; 6 | import android.view.LayoutInflater; 7 | import android.view.View; 8 | import android.view.ViewGroup; 9 | import android.widget.TextView; 10 | 11 | import java.util.HashSet; 12 | 13 | /** 14 | * Created by flisar on 03.03.2017. 15 | */ 16 | 17 | public class TestAutoDataAdapter extends RecyclerView.Adapter 18 | { 19 | 20 | private int mDataSize; 21 | private Context mContext; 22 | private ItemClickListener mClickListener; 23 | 24 | private HashSet mSelected; 25 | 26 | public TestAutoDataAdapter(Context context, int size) 27 | { 28 | mContext = context; 29 | mDataSize = size; 30 | mSelected = new HashSet<>(); 31 | } 32 | 33 | @Override 34 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) 35 | { 36 | View view = LayoutInflater.from(mContext).inflate(R.layout.test_cell, parent, false); 37 | ViewHolder viewHolder = new ViewHolder(view); 38 | return viewHolder; 39 | } 40 | 41 | @Override 42 | public void onBindViewHolder(ViewHolder holder, int position) 43 | { 44 | holder.tvText.setText(String.valueOf(position)); 45 | if (mSelected.contains(position)) 46 | holder.tvText.setBackgroundColor(Color.RED); 47 | else 48 | holder.tvText.setBackgroundColor(Color.WHITE); 49 | } 50 | 51 | @Override 52 | public int getItemCount() 53 | { 54 | return mDataSize; 55 | } 56 | 57 | // ---------------------- 58 | // Selection 59 | // ---------------------- 60 | 61 | public void toggleSelection(int pos) 62 | { 63 | if (mSelected.contains(pos)) 64 | mSelected.remove(pos); 65 | else 66 | mSelected.add(pos); 67 | notifyItemChanged(pos); 68 | } 69 | 70 | public void select(int pos, boolean selected) 71 | { 72 | if (selected) 73 | mSelected.add(pos); 74 | else 75 | mSelected.remove(pos); 76 | notifyItemChanged(pos); 77 | } 78 | 79 | public void selectRange(int start, int end, boolean selected) 80 | { 81 | for (int i = start; i <= end; i++) 82 | { 83 | if (selected) 84 | mSelected.add(i); 85 | else 86 | mSelected.remove(i); 87 | } 88 | notifyItemRangeChanged(start, end - start + 1); 89 | } 90 | 91 | public void deselectAll() 92 | { 93 | // this is not beautiful... 94 | mSelected.clear(); 95 | notifyDataSetChanged(); 96 | } 97 | 98 | public void selectAll() 99 | { 100 | for (int i = 0; i < mDataSize; i++) 101 | mSelected.add(i); 102 | notifyDataSetChanged(); 103 | } 104 | 105 | public int getCountSelected() 106 | { 107 | return mSelected.size(); 108 | } 109 | 110 | public HashSet getSelection() 111 | { 112 | return mSelected; 113 | } 114 | 115 | // ---------------------- 116 | // Click Listener 117 | // ---------------------- 118 | 119 | public void setClickListener(ItemClickListener itemClickListener) 120 | { 121 | mClickListener = itemClickListener; 122 | } 123 | 124 | public interface ItemClickListener 125 | { 126 | void onItemClick(View view, int position); 127 | boolean onItemLongClick(View view, int position); 128 | } 129 | 130 | // ---------------------- 131 | // ViewHolder 132 | // ---------------------- 133 | 134 | public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener 135 | { 136 | public TextView tvText; 137 | 138 | public ViewHolder(View itemView) 139 | { 140 | super(itemView); 141 | tvText = (TextView) itemView.findViewById(R.id.tvText); 142 | itemView.setOnClickListener(this); 143 | itemView.setOnLongClickListener(this); 144 | } 145 | 146 | @Override 147 | public void onClick(View view) 148 | { 149 | if (mClickListener != null) 150 | mClickListener.onItemClick(view, getAdapterPosition()); 151 | } 152 | 153 | @Override 154 | public boolean onLongClick(View view) 155 | { 156 | if (mClickListener != null) 157 | return mClickListener.onItemLongClick(view, getAdapterPosition()); 158 | return false; 159 | } 160 | } 161 | } 162 | -------------------------------------------------------------------------------- /demo/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 14 | 15 | 24 | 25 | 26 | -------------------------------------------------------------------------------- /demo/src/main/res/layout/test_cell.xml: -------------------------------------------------------------------------------- 1 | 2 | 9 | 10 | 16 | 17 | -------------------------------------------------------------------------------- /demo/src/main/res/menu/menu.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 10 | 11 | 12 | 13 | 16 | 17 | 20 | 21 | 24 | 25 | 28 | 29 | 30 | 31 | 32 | 36 | 37 | 41 | -------------------------------------------------------------------------------- /demo/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MFlisar/DragSelectRecyclerView/2350e2888e04af9cf55d64ae7d9843d7adc2b85a/demo/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /demo/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MFlisar/DragSelectRecyclerView/2350e2888e04af9cf55d64ae7d9843d7adc2b85a/demo/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /demo/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MFlisar/DragSelectRecyclerView/2350e2888e04af9cf55d64ae7d9843d7adc2b85a/demo/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /demo/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MFlisar/DragSelectRecyclerView/2350e2888e04af9cf55d64ae7d9843d7adc2b85a/demo/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /demo/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MFlisar/DragSelectRecyclerView/2350e2888e04af9cf55d64ae7d9843d7adc2b85a/demo/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /demo/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 7 | -------------------------------------------------------------------------------- /demo/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | -------------------------------------------------------------------------------- /demo/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 16dp 4 | 16dp 5 | 6 | -------------------------------------------------------------------------------- /demo/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | demo 3 | 4 | -------------------------------------------------------------------------------- /demo/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 14 | 15 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /files/demo.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MFlisar/DragSelectRecyclerView/2350e2888e04af9cf55d64ae7d9843d7adc2b85a/files/demo.gif -------------------------------------------------------------------------------- /files/preview.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MFlisar/DragSelectRecyclerView/2350e2888e04af9cf55d64ae7d9843d7adc2b85a/files/preview.jpg -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Gradle settings configured through the IDE *will override* 5 | # any settings specified in this file. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | org.gradle.jvmargs=-Xmx1536m 13 | 14 | # When configured, Gradle will run in incubating parallel mode. 15 | # This option should only be used with decoupled projects. More details, visit 16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 17 | # org.gradle.parallel=true 18 | android.enableJetifier=false 19 | android.useAndroidX=true -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/MFlisar/DragSelectRecyclerView/2350e2888e04af9cf55d64ae7d9843d7adc2b85a/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Sat Mar 04 17:15:41 CET 2017 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # Attempt to set APP_HOME 46 | # Resolve links: $0 may be a link 47 | PRG="$0" 48 | # Need this for relative symlinks. 49 | while [ -h "$PRG" ] ; do 50 | ls=`ls -ld "$PRG"` 51 | link=`expr "$ls" : '.*-> \(.*\)$'` 52 | if expr "$link" : '/.*' > /dev/null; then 53 | PRG="$link" 54 | else 55 | PRG=`dirname "$PRG"`"/$link" 56 | fi 57 | done 58 | SAVED="`pwd`" 59 | cd "`dirname \"$PRG\"`/" >/dev/null 60 | APP_HOME="`pwd -P`" 61 | cd "$SAVED" >/dev/null 62 | 63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 64 | 65 | # Determine the Java command to use to start the JVM. 66 | if [ -n "$JAVA_HOME" ] ; then 67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 68 | # IBM's JDK on AIX uses strange locations for the executables 69 | JAVACMD="$JAVA_HOME/jre/sh/java" 70 | else 71 | JAVACMD="$JAVA_HOME/bin/java" 72 | fi 73 | if [ ! -x "$JAVACMD" ] ; then 74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 75 | 76 | Please set the JAVA_HOME variable in your environment to match the 77 | location of your Java installation." 78 | fi 79 | else 80 | JAVACMD="java" 81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 82 | 83 | Please set the JAVA_HOME variable in your environment to match the 84 | location of your Java installation." 85 | fi 86 | 87 | # Increase the maximum file descriptors if we can. 88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 89 | MAX_FD_LIMIT=`ulimit -H -n` 90 | if [ $? -eq 0 ] ; then 91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 92 | MAX_FD="$MAX_FD_LIMIT" 93 | fi 94 | ulimit -n $MAX_FD 95 | if [ $? -ne 0 ] ; then 96 | warn "Could not set maximum file descriptor limit: $MAX_FD" 97 | fi 98 | else 99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 100 | fi 101 | fi 102 | 103 | # For Darwin, add options to specify how the application appears in the dock 104 | if $darwin; then 105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 106 | fi 107 | 108 | # For Cygwin, switch paths to Windows format before running java 109 | if $cygwin ; then 110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 112 | JAVACMD=`cygpath --unix "$JAVACMD"` 113 | 114 | # We build the pattern for arguments to be converted via cygpath 115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 116 | SEP="" 117 | for dir in $ROOTDIRSRAW ; do 118 | ROOTDIRS="$ROOTDIRS$SEP$dir" 119 | SEP="|" 120 | done 121 | OURCYGPATTERN="(^($ROOTDIRS))" 122 | # Add a user-defined pattern to the cygpath arguments 123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 125 | fi 126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 127 | i=0 128 | for arg in "$@" ; do 129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 131 | 132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 134 | else 135 | eval `echo args$i`="\"$arg\"" 136 | fi 137 | i=$((i+1)) 138 | done 139 | case $i in 140 | (0) set -- ;; 141 | (1) set -- "$args0" ;; 142 | (2) set -- "$args0" "$args1" ;; 143 | (3) set -- "$args0" "$args1" "$args2" ;; 144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 150 | esac 151 | fi 152 | 153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 154 | function splitJvmOpts() { 155 | JVM_OPTS=("$@") 156 | } 157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 159 | 160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 161 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /library/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /library/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | 3 | group = 'com.github.MFlisar' 4 | 5 | android { 6 | 7 | if (project.hasProperty('setup.compileSdk')) 8 | { 9 | compileSdkVersion setup.compileSdk 10 | buildToolsVersion setup.buildTools 11 | defaultConfig { 12 | minSdkVersion setup.minSdk 13 | targetSdkVersion setup.targetSdk 14 | } 15 | } 16 | else 17 | { 18 | compileSdkVersion 25 19 | buildToolsVersion "25.0.2" 20 | defaultConfig { 21 | minSdkVersion 16 22 | targetSdkVersion 25 23 | } 24 | } 25 | 26 | if (!project.hasProperty('versions.supportLib')) 27 | { 28 | project.ext.set("versions", ["supportLib" : "25.2.0"]); 29 | } 30 | 31 | buildTypes { 32 | release { 33 | minifyEnabled false 34 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 35 | } 36 | } 37 | } 38 | 39 | dependencies { 40 | compile "com.android.support:support-core-ui:${versions.supportLib}" 41 | // compile "com.android.support:appcompat-v7:${versions.supportLib}" 42 | compile "com.android.support:recyclerview-v7:${versions.supportLib}" 43 | } -------------------------------------------------------------------------------- /library/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in M:\SWDevelopment\AndroidSDK/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interfaces 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interfaces.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /library/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /library/src/main/java/com/michaelflisar/dragselectrecyclerview/DragSelectTouchListener.java: -------------------------------------------------------------------------------- 1 | package com.michaelflisar.dragselectrecyclerview; 2 | 3 | import android.content.Context; 4 | import android.content.res.Resources; 5 | import android.support.v4.view.MotionEventCompat; 6 | import android.support.v4.view.ViewCompat; 7 | import android.support.v4.widget.ScrollerCompat; 8 | import android.support.v7.widget.RecyclerView; 9 | import android.util.Log; 10 | import android.view.MotionEvent; 11 | import android.view.View; 12 | import android.view.animation.LinearInterpolator; 13 | 14 | /** 15 | * Created by flisar on 24.01.2017. 16 | */ 17 | public class DragSelectTouchListener implements RecyclerView.OnItemTouchListener 18 | { 19 | private static final String TAG = "DSTL"; 20 | 21 | private boolean mIsActive; 22 | private int mStart, mEnd; 23 | private boolean mInTopSpot, mInBottomSpot; 24 | private int mScrollDistance; 25 | private float mScrollSpeedFactor; 26 | private float mLastX, mLastY; 27 | private int mLastStart, mLastEnd; 28 | 29 | private OnDragSelectListener mSelectListener; 30 | private RecyclerView mRecyclerView; 31 | private ScrollerCompat mScroller; 32 | private Runnable mScrollRunnable = new Runnable() 33 | { 34 | @Override 35 | public void run() 36 | { 37 | if (mScroller != null && mScroller.computeScrollOffset()) 38 | { 39 | scrollBy(mScrollDistance); 40 | ViewCompat.postOnAnimation(mRecyclerView, mScrollRunnable); 41 | } 42 | } 43 | }; 44 | 45 | // Definitions for touch auto scroll regions 46 | private int mTopBoundFrom, mTopBoundTo, mBottomBoundFrom, mBottomBoundTo; 47 | 48 | // User settings - default values 49 | private int mMaxScrollDistance = 16; 50 | private int mAutoScrollDistance = (int) (Resources.getSystem().getDisplayMetrics().density * 56); 51 | private int mTouchRegionTopOffset = 0; 52 | private int mTouchRegionBottomOffset = 0; 53 | private boolean mScrollAboveTopRegion = true; 54 | private boolean mScrollBelowTopRegion = true; 55 | private boolean mDebug = false; 56 | 57 | // ----------------------- 58 | // Konstructur and Builder functions 59 | // ----------------------- 60 | 61 | public DragSelectTouchListener() 62 | { 63 | reset(); 64 | } 65 | 66 | /** 67 | * sets the listener 68 | *

69 | * 70 | * @param selectListener the listener that will be notified when items are (un)selected 71 | */ 72 | public DragSelectTouchListener withSelectListener(OnDragSelectListener selectListener) 73 | { 74 | this.mSelectListener = selectListener; 75 | return this; 76 | } 77 | 78 | /** 79 | * sets the distance that the RecyclerView is maximally scrolled (per scroll event) 80 | * higher values result in higher scrolling speed 81 | *

82 | * 83 | * @param distance the distance in pixels 84 | */ 85 | public DragSelectTouchListener withMaxScrollDistance(int distance) 86 | { 87 | mMaxScrollDistance = distance; 88 | return this; 89 | } 90 | 91 | /** 92 | * defines the height of the region at the top/bottom of the RecyclerView 93 | * which will make the RecyclerView scroll 94 | *

95 | * 96 | * @param size height of region 97 | */ 98 | public DragSelectTouchListener withTouchRegion(int size) 99 | { 100 | mAutoScrollDistance = size; 101 | return this; 102 | } 103 | 104 | /** 105 | * defines an offset for the TouchRegion from the top 106 | * useful, if RecyclerView is displayed underneath a semi transparent Toolbar at top or similar 107 | *

108 | * 109 | * @param distance offset 110 | */ 111 | public DragSelectTouchListener withTopOffset(int distance) 112 | { 113 | mTouchRegionTopOffset = distance; 114 | return this; 115 | } 116 | 117 | /** 118 | * defines an offset for the TouchRegion from the bottom 119 | * useful, if RecyclerView is displayed underneath a semi transparent navigation view at the bottom or similar 120 | * ATTENTION: to move the region upwards, set a negative value! 121 | *

122 | * 123 | * @param distance offset 124 | */ 125 | public DragSelectTouchListener withBottomOffset(int distance) 126 | { 127 | mTouchRegionBottomOffset = distance; 128 | return this; 129 | } 130 | 131 | /** 132 | * enables scrolling, if the user touches the region above the RecyclerView 133 | * respectively above the TouchRegion at the top 134 | *

135 | * 136 | * @param enabled if true, scrolling will continue even if the touch moves above the top touch region 137 | */ 138 | public DragSelectTouchListener withScrollAboveTopRegion(boolean enabled) 139 | { 140 | mScrollAboveTopRegion = enabled; 141 | return this; 142 | } 143 | 144 | /** 145 | * enables scrolling, if the user touches the region below the RecyclerView 146 | * respectively below the TouchRegion at the bottom 147 | *

148 | * 149 | * @param enabled if true, scrolling will continue even if the touch moves below the bottom touch region 150 | */ 151 | public DragSelectTouchListener withScrollBelowTopRegion(boolean enabled) 152 | { 153 | mScrollBelowTopRegion = enabled; 154 | return this; 155 | } 156 | 157 | public DragSelectTouchListener withDebug(boolean enabled) 158 | { 159 | mDebug = enabled; 160 | return this; 161 | } 162 | 163 | // ----------------------- 164 | // Main functions 165 | // ----------------------- 166 | 167 | /** 168 | * start the drag selection 169 | *

170 | * 171 | * @param position the index of the first selected item 172 | */ 173 | public void startDragSelection(int position) 174 | { 175 | setIsActive(true); 176 | mStart = position; 177 | mEnd = position; 178 | mLastStart = position; 179 | mLastEnd = position; 180 | if (mSelectListener != null && mSelectListener instanceof OnAdvancedDragSelectListener) 181 | ((OnAdvancedDragSelectListener)mSelectListener).onSelectionStarted(position); 182 | } 183 | 184 | // ----------------------- 185 | // Functions 186 | // ----------------------- 187 | 188 | @Override 189 | public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) 190 | { 191 | if (!mIsActive || rv.getAdapter().getItemCount() == 0) 192 | return false; 193 | 194 | int action = MotionEventCompat.getActionMasked(e); 195 | switch (action) 196 | { 197 | case MotionEvent.ACTION_POINTER_DOWN: 198 | case MotionEvent.ACTION_DOWN: 199 | reset(); 200 | break; 201 | } 202 | 203 | mRecyclerView = rv; 204 | int height = rv.getHeight(); 205 | mTopBoundFrom = 0 + mTouchRegionTopOffset; 206 | mTopBoundTo = 0 + mTouchRegionTopOffset + mAutoScrollDistance; 207 | mBottomBoundFrom = height + mTouchRegionBottomOffset - mAutoScrollDistance; 208 | mBottomBoundTo = height + mTouchRegionBottomOffset; 209 | return true; 210 | } 211 | 212 | public void startAutoScroll() 213 | { 214 | if (mRecyclerView == null) 215 | return; 216 | 217 | initScroller(mRecyclerView.getContext()); 218 | if (mScroller.isFinished()) 219 | { 220 | mRecyclerView.removeCallbacks(mScrollRunnable); 221 | mScroller.startScroll(0, mScroller.getCurrY(), 0, 5000, 100000); 222 | ViewCompat.postOnAnimation(mRecyclerView, mScrollRunnable); 223 | } 224 | } 225 | 226 | private void initScroller(Context context) 227 | { 228 | if (mScroller == null) 229 | mScroller = ScrollerCompat.create(context, new LinearInterpolator()); 230 | } 231 | 232 | public void stopAutoScroll() 233 | { 234 | if (mScroller != null && !mScroller.isFinished()) 235 | { 236 | mRecyclerView.removeCallbacks(mScrollRunnable); 237 | mScroller.abortAnimation(); 238 | } 239 | } 240 | 241 | @Override 242 | public void onTouchEvent(RecyclerView rv, MotionEvent e) 243 | { 244 | if (!mIsActive) 245 | return; 246 | 247 | int action = MotionEventCompat.getActionMasked(e); 248 | switch (action) 249 | { 250 | case MotionEvent.ACTION_MOVE: 251 | if (!mInTopSpot && !mInBottomSpot) 252 | updateSelectedRange(rv, e); 253 | processAutoScroll(e); 254 | break; 255 | case MotionEvent.ACTION_CANCEL: 256 | case MotionEvent.ACTION_UP: 257 | case MotionEvent.ACTION_POINTER_UP: 258 | reset(); 259 | break; 260 | } 261 | } 262 | 263 | private void updateSelectedRange(RecyclerView rv, MotionEvent e) 264 | { 265 | updateSelectedRange(rv, e.getX(), e.getY()); 266 | } 267 | 268 | private void updateSelectedRange(RecyclerView rv, float x, float y) 269 | { 270 | View child = rv.findChildViewUnder(x, y); 271 | if (child != null) 272 | { 273 | int position = rv.getChildAdapterPosition(child); 274 | if (position != RecyclerView.NO_POSITION && mEnd != position) 275 | { 276 | mEnd = position; 277 | notifySelectRangeChange(); 278 | } 279 | } 280 | } 281 | 282 | 283 | private void processAutoScroll(MotionEvent event) 284 | { 285 | int y = (int) event.getY(); 286 | 287 | if (mDebug) 288 | Log.d(TAG, "y = " + y + 289 | " | rv.height = " + mRecyclerView.getHeight() + 290 | " | mTopBoundFrom => mTopBoundTo = " + mTopBoundFrom + " => " + mTopBoundTo + 291 | " | mBottomBoundFrom => mBottomBoundTo = " + mBottomBoundFrom + " => " + mBottomBoundTo + 292 | " | mTouchRegionTopOffset = " + mTouchRegionTopOffset + 293 | " | mTouchRegionBottomOffset = " + mTouchRegionBottomOffset); 294 | 295 | if (y >= mTopBoundFrom && y <= mTopBoundTo) 296 | { 297 | mLastX = event.getX(); 298 | mLastY = event.getY(); 299 | mScrollSpeedFactor = (((float) mTopBoundTo - (float) mTopBoundFrom) - ((float) y - (float) mTopBoundFrom)) / ((float) mTopBoundTo - (float) mTopBoundFrom); 300 | mScrollDistance = (int) ((float) mMaxScrollDistance * mScrollSpeedFactor * -1f); 301 | if (mDebug) 302 | Log.d(TAG, "SCROLL - mScrollSpeedFactor=" + mScrollSpeedFactor + " | mScrollDistance=" + mScrollDistance); 303 | if (!mInTopSpot) 304 | { 305 | mInTopSpot = true; 306 | startAutoScroll(); 307 | } 308 | } 309 | else if (mScrollAboveTopRegion && y < mTopBoundFrom) 310 | { 311 | mLastX = event.getX(); 312 | mLastY = event.getY(); 313 | mScrollDistance = mMaxScrollDistance * -1; 314 | if (!mInTopSpot) 315 | { 316 | mInTopSpot = true; 317 | startAutoScroll(); 318 | } 319 | } 320 | else if (y >= mBottomBoundFrom && y <= mBottomBoundTo) 321 | { 322 | mLastX = event.getX(); 323 | mLastY = event.getY(); 324 | mScrollSpeedFactor = (((float) y - (float) mBottomBoundFrom)) / ((float) mBottomBoundTo - (float) mBottomBoundFrom); 325 | mScrollDistance = (int) ((float) mMaxScrollDistance * mScrollSpeedFactor); 326 | if (mDebug) 327 | Log.d(TAG, "SCROLL - mScrollSpeedFactor=" + mScrollSpeedFactor + " | mScrollDistance=" + mScrollDistance); 328 | if (!mInBottomSpot) 329 | { 330 | mInBottomSpot = true; 331 | startAutoScroll(); 332 | } 333 | } 334 | else if (mScrollBelowTopRegion && y > mBottomBoundTo) 335 | { 336 | mLastX = event.getX(); 337 | mLastY = event.getY(); 338 | mScrollDistance = mMaxScrollDistance; 339 | if (!mInTopSpot) 340 | { 341 | mInTopSpot = true; 342 | startAutoScroll(); 343 | } 344 | } 345 | else 346 | { 347 | mInBottomSpot = false; 348 | mInTopSpot = false; 349 | mLastX = Float.MIN_VALUE; 350 | mLastY = Float.MIN_VALUE; 351 | stopAutoScroll(); 352 | } 353 | } 354 | 355 | private void notifySelectRangeChange() 356 | { 357 | if (mSelectListener == null) 358 | return; 359 | if (mStart == RecyclerView.NO_POSITION || mEnd == RecyclerView.NO_POSITION) 360 | return; 361 | 362 | int newStart, newEnd; 363 | newStart = Math.min(mStart, mEnd); 364 | newEnd = Math.max(mStart, mEnd); 365 | if (mLastStart == RecyclerView.NO_POSITION || mLastEnd == RecyclerView.NO_POSITION) 366 | { 367 | if (newEnd - newStart == 1) 368 | mSelectListener.onSelectChange(newStart, newStart, true); 369 | else 370 | mSelectListener.onSelectChange(newStart, newEnd, true); 371 | } 372 | else 373 | { 374 | if (newStart > mLastStart) 375 | mSelectListener.onSelectChange(mLastStart, newStart - 1, false); 376 | else if (newStart < mLastStart) 377 | mSelectListener.onSelectChange(newStart, mLastStart - 1, true); 378 | 379 | if (newEnd > mLastEnd) 380 | mSelectListener.onSelectChange(mLastEnd + 1, newEnd, true); 381 | else if (newEnd < mLastEnd) 382 | mSelectListener.onSelectChange(newEnd + 1, mLastEnd, false); 383 | } 384 | 385 | mLastStart = newStart; 386 | mLastEnd = newEnd; 387 | } 388 | 389 | private void reset() 390 | { 391 | setIsActive(false); 392 | if (mSelectListener != null && mSelectListener instanceof OnAdvancedDragSelectListener) 393 | ((OnAdvancedDragSelectListener)mSelectListener).onSelectionFinished(mEnd); 394 | mStart = RecyclerView.NO_POSITION; 395 | mEnd = RecyclerView.NO_POSITION; 396 | mLastStart = RecyclerView.NO_POSITION; 397 | mLastEnd = RecyclerView.NO_POSITION; 398 | mInTopSpot = false; 399 | mInBottomSpot = false; 400 | mLastX = Float.MIN_VALUE; 401 | mLastY = Float.MIN_VALUE; 402 | stopAutoScroll(); 403 | } 404 | 405 | @Override 406 | public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) 407 | { 408 | // ignore 409 | } 410 | 411 | private void scrollBy(int distance) 412 | { 413 | int scrollDistance; 414 | if (distance > 0) 415 | scrollDistance = Math.min(distance, mMaxScrollDistance); 416 | else 417 | scrollDistance = Math.max(distance, -mMaxScrollDistance); 418 | mRecyclerView.scrollBy(0, scrollDistance); 419 | if (mLastX != Float.MIN_VALUE && mLastY != Float.MIN_VALUE) 420 | updateSelectedRange(mRecyclerView, mLastX, mLastY); 421 | } 422 | 423 | public void setIsActive(boolean isActive) 424 | { 425 | this.mIsActive = isActive; 426 | } 427 | 428 | // ----------------------- 429 | // Interfaces and simple default implementations 430 | // ----------------------- 431 | 432 | public interface OnAdvancedDragSelectListener extends OnDragSelectListener 433 | { 434 | /** 435 | * @param start the item on which the drag selection was started at 436 | */ 437 | void onSelectionStarted(int start); 438 | 439 | /** 440 | * @param end the item on which the drag selection was finished at 441 | */ 442 | void onSelectionFinished(int end); 443 | } 444 | 445 | public interface OnDragSelectListener 446 | { 447 | /** 448 | * @param start the newly (un)selected range start 449 | * @param end the newly (un)selected range end 450 | * @param isSelected true, it range got selected, false if not 451 | */ 452 | void onSelectChange(int start, int end, boolean isSelected); 453 | } 454 | } -------------------------------------------------------------------------------- /library/src/main/java/com/michaelflisar/dragselectrecyclerview/DragSelectionProcessor.java: -------------------------------------------------------------------------------- 1 | package com.michaelflisar.dragselectrecyclerview; 2 | 3 | import java.util.HashSet; 4 | import java.util.Set; 5 | 6 | /** 7 | * Created by Michael on 04.03.2017. 8 | */ 9 | 10 | public class DragSelectionProcessor implements DragSelectTouchListener.OnAdvancedDragSelectListener { 11 | 12 | /** 13 | * Different existing selection modes 14 | */ 15 | public enum Mode 16 | { 17 | /** 18 | * simply selects each item you go by and unselects on move back 19 | */ 20 | Simple, 21 | /** 22 | * toggles each items original state, reverts to the original state on move back 23 | */ 24 | ToggleAndUndo, 25 | /** 26 | * toggles the first item and applies the same state to each item you go by and applies inverted state on move back 27 | */ 28 | FirstItemDependent, 29 | /** 30 | * toggles the item and applies the same state to each item you go by and reverts to the original state on move back 31 | */ 32 | FirstItemDependentToggleAndUndo 33 | } 34 | 35 | private Mode mMode; 36 | private ISelectionHandler mSelectionHandler; 37 | private ISelectionStartFinishedListener mStartFinishedListener; 38 | private HashSet mOriginalSelection; 39 | private boolean mFirstWasSelected; 40 | private boolean mCheckSelectionState = false; 41 | 42 | /** 43 | * @param selectionHandler the handler that takes care to handle the selection events 44 | */ 45 | public DragSelectionProcessor(ISelectionHandler selectionHandler) 46 | { 47 | mMode = Mode.Simple; 48 | mSelectionHandler = selectionHandler; 49 | mStartFinishedListener = null; 50 | } 51 | 52 | /** 53 | * @param mode the mode in which the selection events should be processed 54 | * @return this 55 | */ 56 | public DragSelectionProcessor withMode(Mode mode) 57 | { 58 | mMode = mode; 59 | return this; 60 | } 61 | 62 | /** 63 | * @param startFinishedListener a listener that get's notified when the drag selection is started or finished 64 | * @return this 65 | */ 66 | public DragSelectionProcessor withStartFinishedListener(ISelectionStartFinishedListener startFinishedListener) 67 | { 68 | mStartFinishedListener = startFinishedListener; 69 | return this; 70 | } 71 | 72 | /** 73 | * If this is enabled, the processor will check if an items selection state is toggled before notifying the {@link ISelectionHandler} 74 | * @param check true, if this check should be enabled 75 | * @return this 76 | */ 77 | public DragSelectionProcessor withCheckSelectionState(boolean check) 78 | { 79 | mCheckSelectionState = check; 80 | return this; 81 | } 82 | 83 | @Override 84 | public void onSelectionStarted(int start) 85 | { 86 | mOriginalSelection = new HashSet<>(); 87 | Set selected = mSelectionHandler.getSelection(); 88 | if (selected != null) 89 | mOriginalSelection.addAll(selected); 90 | mFirstWasSelected = mOriginalSelection.contains(start); 91 | 92 | switch (mMode) 93 | { 94 | case Simple: 95 | { 96 | mSelectionHandler.updateSelection(start, start, true, true); 97 | break; 98 | } 99 | case ToggleAndUndo: 100 | { 101 | mSelectionHandler.updateSelection(start, start, !mOriginalSelection.contains(start), true); 102 | break; 103 | } 104 | case FirstItemDependent: 105 | { 106 | mSelectionHandler.updateSelection(start, start, !mFirstWasSelected, true); 107 | break; 108 | } 109 | case FirstItemDependentToggleAndUndo: 110 | { 111 | mSelectionHandler.updateSelection(start, start, !mFirstWasSelected, true); 112 | break; 113 | } 114 | } 115 | if (mStartFinishedListener != null) 116 | mStartFinishedListener.onSelectionStarted(start, mFirstWasSelected); 117 | } 118 | 119 | @Override 120 | public void onSelectionFinished(int end) 121 | { 122 | mOriginalSelection = null; 123 | 124 | if (mStartFinishedListener != null) 125 | mStartFinishedListener.onSelectionFinished(end); 126 | } 127 | 128 | @Override 129 | public void onSelectChange(int start, int end, boolean isSelected) 130 | { 131 | switch (mMode) 132 | { 133 | case Simple: 134 | { 135 | if (mCheckSelectionState) 136 | checkedUpdateSelection(start, end, isSelected); 137 | else 138 | mSelectionHandler.updateSelection(start, end, isSelected, false); 139 | break; 140 | } 141 | case ToggleAndUndo: 142 | { 143 | for (int i = start; i <= end; i++) 144 | checkedUpdateSelection(i, i, isSelected ? !mOriginalSelection.contains(i) : mOriginalSelection.contains(i)); 145 | break; 146 | } 147 | case FirstItemDependent: 148 | { 149 | checkedUpdateSelection(start, end, isSelected ? !mFirstWasSelected : mFirstWasSelected); 150 | break; 151 | } 152 | case FirstItemDependentToggleAndUndo: 153 | { 154 | for (int i = start; i <= end; i++) 155 | checkedUpdateSelection(i, i, isSelected ? !mFirstWasSelected : mOriginalSelection.contains(i)); 156 | break; 157 | } 158 | } 159 | } 160 | 161 | private void checkedUpdateSelection(int start, int end, boolean newSelectionState) 162 | { 163 | if (mCheckSelectionState) 164 | { 165 | for (int i = start; i <= end; i++) 166 | { 167 | if (mSelectionHandler.isSelected(i) != newSelectionState) 168 | mSelectionHandler.updateSelection(i, i, newSelectionState, false); 169 | } 170 | } 171 | else 172 | mSelectionHandler.updateSelection(start, end, newSelectionState, false); 173 | } 174 | 175 | public interface ISelectionHandler 176 | { 177 | /** 178 | * @return the currently selected items => can be ignored for {@link Mode#Simple} and {@link Mode#FirstItemDependent} 179 | */ 180 | Set getSelection(); 181 | 182 | /** 183 | * only used, if {@link DragSelectionProcessor#withCheckSelectionState(boolean)} was enabled 184 | * @param index the index which selection state wants to be known 185 | * @return the current selection state of the passed in index 186 | */ 187 | boolean isSelected(int index); 188 | 189 | /** 190 | * update your adapter and select select/unselect the passed index range, you be get a single for all modes but {@link Mode#Simple} and {@link Mode#FirstItemDependent} 191 | * 192 | * @param start the first item of the range who's selection state changed 193 | * @param end the last item of the range who's selection state changed 194 | * @param isSelected true, if the range should be selected, false otherwise 195 | * @param calledFromOnStart true, if it was called from the {@link DragSelectionProcessor#onSelectionStarted(int)} event 196 | */ 197 | void updateSelection(int start, int end, boolean isSelected, boolean calledFromOnStart); 198 | } 199 | 200 | public interface ISelectionStartFinishedListener 201 | { 202 | /** 203 | * @param start the item on which the drag selection was started at 204 | * @param originalSelectionState the original selection state 205 | */ 206 | void onSelectionStarted(int start, boolean originalSelectionState); 207 | 208 | /** 209 | * @param end the item on which the drag selection was finished at 210 | */ 211 | void onSelectionFinished(int end); 212 | } 213 | } 214 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':library', ':demo' 2 | --------------------------------------------------------------------------------