├── LICENSE ├── README.md └── app ├── .gitignore ├── app.iml ├── build.gradle ├── proguard-rules.pro └── src └── main ├── AndroidManifest.xml ├── java └── com │ └── example │ └── examplersqr │ ├── MainActivity.java │ ├── QRBarDecoration.java │ ├── RVAdapter.java │ └── TargetedSwipeRefreshLayout.java └── res ├── drawable-hdpi └── ic_launcher.png ├── drawable-mdpi └── ic_launcher.png ├── drawable-xhdpi └── ic_launcher.png ├── drawable-xxhdpi └── ic_launcher.png ├── layout ├── activity_main.xml └── cell_example.xml ├── menu └── menu_main.xml ├── values-w820dp └── dimens.xml └── values ├── dimens.xml ├── strings.xml └── styles.xml /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. 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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 | #recyclerview-grid-quickreturn 2 | 3 | An example of implementing QuickReturn on a RecyclerView 4 | using a StaggeredGridLayoutManager to display CardViews inside a SwipeRefreshLayout. 5 | 6 | This is an example project that shows one approach (probably not the best one!) of 7 | implementing the QuickReturn pattern with a RecyclerView that uses the 8 | StaggeredGridLayoutManager. For grins, the whole thing also supports Pull-to-Refresh 9 | using a SwipeRefreshLayout. By the way, the cells within the layout are CardViews, and use 10 | the `card_view:cardUseCompatPadding="true"` attribute to display properly on Lollipop. 11 | 12 | The idea is that the QR view should not cover the top items in the RV. This is now accomplished with a custom 13 | (but trivial) ItemDecoration. As a result, the adapter and layoutmanager are plain vanilla. I'm sure there's 14 | a better way, so if you find it, please explain it to me! :-) 15 | 16 | Here's what it looks like with expandable cells: https://www.youtube.com/watch?v=ulf4v3Qzn4o 17 | 18 | Here's an older animation: 19 | 20 | ![rsqr](https://cloud.githubusercontent.com/assets/3764409/4998140/88d948ee-69a3-11e4-95ba-076da0a6ad95.gif) 21 | 22 | ##Changes 23 | 1. (2015-1-2) Added TargetedSwipeRefreshLayout (TSRL) to permit multiple views within the SwipeRefreshLayout. 24 | 1. (2015-1-2) Removed topview detection from onScrollListener (no longer needed with TSRL). 25 | 2. (2014-11-14) Modified the spacing hack to use an ItemDecorator (cleaner approach). 26 | 27 | ##TODO 28 | 1. (2014-11-14) ~~It's been suggested that I look into using ItemDecoration instead of adjusting cell margins during onBind.~~ 29 | 2. (2015-03-18) Fixed using recyclerview-v7 R22 ~~Need to address issue of inserting items at top of grid.~~ 30 | 31 | 32 | ##License 33 | 34 | ``` 35 | Copyright 2014-2015 David Bleicher 36 | 37 | Licensed under the Apache License, Version 2.0 (the "License"); 38 | you may not use this file except in compliance with the License. 39 | You may obtain a copy of the License at 40 | 41 | http://www.apache.org/licenses/LICENSE-2.0 42 | 43 | Unless required by applicable law or agreed to in writing, software 44 | distributed under the License is distributed on an "AS IS" BASIS, 45 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 46 | See the License for the specific language governing permissions and 47 | limitations under the License. 48 | ``` 49 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/app.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 22 5 | buildToolsVersion "22" 6 | 7 | defaultConfig { 8 | applicationId "com.example.examplersqr" 9 | minSdkVersion 14 10 | targetSdkVersion 22 11 | versionCode 1 12 | versionName "1.0" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | } 21 | 22 | dependencies { 23 | compile fileTree(dir: 'libs', include: ['*.jar']) 24 | 25 | compile 'com.android.support:appcompat-v7:+' 26 | compile 'com.android.support:support-v4:+' 27 | compile 'com.android.support:cardview-v7:+' 28 | compile 'com.android.support:recyclerview-v7:+' 29 | 30 | } 31 | -------------------------------------------------------------------------------- /app/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 /Users/davidbleicher/Documents/Development/android-sdk-macosx/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 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 10 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/examplersqr/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.example.examplersqr; 2 | 3 | import android.os.Bundle; 4 | import android.os.Handler; 5 | import android.support.v4.widget.SwipeRefreshLayout; 6 | import android.support.v7.app.ActionBarActivity; 7 | import android.support.v7.widget.RecyclerView; 8 | import android.support.v7.widget.StaggeredGridLayoutManager; 9 | import android.util.TypedValue; 10 | import android.view.View; 11 | import android.view.animation.Animation; 12 | import android.view.animation.AnimationUtils; 13 | import android.widget.LinearLayout; 14 | import android.widget.TextView; 15 | 16 | import java.util.ArrayList; 17 | import java.util.Collections; 18 | import java.util.Date; 19 | import java.util.Random; 20 | 21 | /** 22 | * Copyright 2014 David Bleicher 23 | * 24 | * Licensed under the Apache License, Version 2.0 (the "License"); 25 | * you may not use this file except in compliance with the License. 26 | * You may obtain a copy of the License at 27 | * 28 | * http://www.apache.org/licenses/LICENSE-2.0 29 | * 30 | * Unless required by applicable law or agreed to in writing, software 31 | * distributed under the License is distributed on an "AS IS" BASIS, 32 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 33 | * See the License for the specific language governing permissions and 34 | * limitations under the License. 35 | * 36 | * Initial version created 11/10/2014 37 | */ 38 | public class MainActivity extends ActionBarActivity { 39 | 40 | private TargetedSwipeRefreshLayout swiper; 41 | private RecyclerView mRecycler; 42 | private StaggeredGridLayoutManager mSGLM; 43 | private LinearLayout qrBar; 44 | private TextView tvQRBarTitle; 45 | 46 | private RVAdapter mAdapter; 47 | private ArrayList myDataset; 48 | private Animation inAnim; 49 | private Animation outAnim; 50 | 51 | // An array of meaningless titles 52 | private static final String[] someTitles = { 53 | "This is a Title", 54 | "Another Short Title", 55 | "Here's a Much Longer Title for Everyone to Deal With!!", 56 | "Coming Soon...", 57 | "Hey Bud, How About That Local Sports Team?", 58 | "What's Up Pussycat? Whoaaa" 59 | }; 60 | 61 | // For randomizing titles across our dataset 62 | private Random randy = new Random(); 63 | 64 | // See QRBar setup below 65 | private int columnCount; 66 | private int qrBarHeight; 67 | 68 | @Override 69 | protected void onCreate(Bundle savedInstanceState) { 70 | super.onCreate(savedInstanceState); 71 | setContentView(R.layout.activity_main); 72 | 73 | ////////////////////// 74 | // Setup QR Bar // 75 | ////////////////////// 76 | inAnim = AnimationUtils.loadAnimation(this, R.anim.abc_slide_in_top); 77 | outAnim = AnimationUtils.loadAnimation(this,R.anim.abc_slide_out_top); 78 | qrBar = (LinearLayout) findViewById(R.id.myQRBar); 79 | 80 | // In production, better to get this from a "values.xml" resource 81 | // in a res folder appropriate to screen size / orientation 82 | columnCount = 2; 83 | 84 | // Set the QRBar Height to that of the ActionBar 85 | TypedValue tv = new TypedValue(); 86 | if (getTheme().resolveAttribute(R.attr.actionBarSize, tv, true)) { 87 | qrBarHeight = TypedValue.complexToDimensionPixelSize(tv.data, getResources().getDisplayMetrics()); 88 | } 89 | 90 | tvQRBarTitle = (TextView) findViewById(R.id.tvQRBarTitle); 91 | tvQRBarTitle.setText("Tap to add item at top..."); 92 | tvQRBarTitle.setOnClickListener(new View.OnClickListener() { 93 | @Override 94 | public void onClick(View view) { 95 | addItemAtPosition(0, "NEW CARD ADDED ON: "+new Date().toString()); 96 | } 97 | }); 98 | 99 | ////////////////////////////// 100 | // Setup Swipe To Refresh // 101 | ////////////////////////////// 102 | swiper = (TargetedSwipeRefreshLayout) findViewById(R.id.swipe_container); 103 | swiper.setSize(SwipeRefreshLayout.LARGE); 104 | swiper.setColorSchemeResources( 105 | android.R.color.holo_blue_bright, 106 | android.R.color.holo_orange_light, 107 | android.R.color.holo_green_light, 108 | android.R.color.holo_red_light 109 | ); 110 | 111 | swiper.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { 112 | @Override 113 | public void onRefresh() { 114 | // This is where you should kickoff the 115 | // refreshing task. 116 | 117 | // For now, just wait a few seconds and turn off refreshing. 118 | new Handler().postDelayed(new Runnable() { 119 | @Override public void run() { 120 | if (myDataset != null && mAdapter != null) { 121 | Collections.shuffle(myDataset); 122 | mAdapter.notifyDataSetChanged(); 123 | } 124 | swiper.setRefreshing(false); 125 | } 126 | }, 5000); 127 | } 128 | }); 129 | 130 | 131 | ////////////////////////////////////////////// 132 | // Grab the StaggeredGrid & Layout Manager // 133 | ////////////////////////////////////////////// 134 | mRecycler = (RecyclerView) findViewById(R.id.rvExampleGrid); 135 | mRecycler.addItemDecoration(new QRBarDecoration(columnCount, qrBarHeight)); 136 | // mRecycler.addItemDecoration(new OverlapDecoration()); 137 | 138 | mSGLM = new StaggeredGridLayoutManager(columnCount, StaggeredGridLayoutManager.VERTICAL); 139 | 140 | mRecycler.setLayoutManager(mSGLM); 141 | 142 | ////////////////////////////// 143 | // Setup Adapter & DataSet // 144 | ////////////////////////////// 145 | myDataset = new ArrayList(); 146 | 147 | // Load up the dataset with random titles 148 | for (int x = 0; x < 50; x++) { 149 | myDataset.add(someTitles[randy.nextInt(someTitles.length)]); 150 | } 151 | 152 | mAdapter = new RVAdapter(this, myDataset); 153 | 154 | ///////////////////////////////////////////// 155 | // Setup the RecyclerView Scroll Listener // 156 | ///////////////////////////////////////////// 157 | mRecycler.setOnScrollListener(new RecyclerView.OnScrollListener() { 158 | 159 | @Override 160 | public void onScrollStateChanged(RecyclerView recyclerView, int newState) { 161 | super.onScrollStateChanged(recyclerView, newState); 162 | } 163 | 164 | @Override 165 | public void onScrolled(RecyclerView recyclerView, int dx, int dy) { 166 | 167 | // Simple check if moved vertically. 168 | // React to scrolls of a minimum amount (3, in this case) 169 | if (dy > 3) { 170 | 171 | if (qrBar.getVisibility() == View.VISIBLE) 172 | hideQRBar(); 173 | 174 | } else if (dy < -3) { 175 | 176 | if (qrBar.getVisibility() == View.GONE) 177 | showQRBar(); 178 | } 179 | } 180 | }); 181 | 182 | 183 | // Set the RecyclerView's Adapter 184 | mRecycler.setAdapter(mAdapter); 185 | 186 | // Set the Recyclerview to be the target scrollable view 187 | // for the TargetedSwipeRefreshAdapter. 188 | swiper.setTargetScrollableView(mRecycler); 189 | 190 | } 191 | 192 | private void hideQRBar() { 193 | qrBar.startAnimation(outAnim); 194 | qrBar.setVisibility(View.GONE); 195 | } 196 | 197 | private void showQRBar() { 198 | qrBar.startAnimation(inAnim); 199 | qrBar.setVisibility(View.VISIBLE); 200 | } 201 | 202 | /** 203 | * Adds an item at postion, and scrolls to that position. 204 | * @param position index in dataset 205 | * @param item to add 206 | */ 207 | public void addItemAtPosition(int position, String item) { 208 | myDataset.add(position, item); 209 | mAdapter.notifyItemInserted(position); 210 | mSGLM.scrollToPosition(position); 211 | 212 | // Items added to the top row? Better invalidate the decorator. 213 | // Delay to ensure that the previous layout pass has completed. 214 | // NO LONGER REQUIRED: as of R22 support libs 215 | // if (position < columnCount) { 216 | // new Handler().post(new Runnable() { 217 | // @Override 218 | // public void run() { 219 | // mRecycler.invalidateItemDecorations(); 220 | // } 221 | // }); 222 | // } 223 | } 224 | 225 | 226 | } 227 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/examplersqr/QRBarDecoration.java: -------------------------------------------------------------------------------- 1 | package com.example.examplersqr; 2 | 3 | import android.graphics.Rect; 4 | import android.support.v7.widget.RecyclerView; 5 | import android.view.View; 6 | 7 | public class QRBarDecoration extends RecyclerView.ItemDecoration { 8 | 9 | private int columnCount; 10 | private int qrBarHeight; 11 | 12 | public QRBarDecoration(int columnCount, int qrBarHeight) { 13 | this.columnCount = columnCount; 14 | this.qrBarHeight = qrBarHeight; 15 | } 16 | 17 | @Override 18 | public void getItemOffsets (Rect outRect, View view, RecyclerView parent, RecyclerView.State state) { 19 | 20 | // Sets the "inset" of the top views in the grid 21 | if (parent.getChildPosition(view) < columnCount) { 22 | outRect.set(0,qrBarHeight,0,0); 23 | } else { 24 | outRect.set(0,0,0,0); 25 | } 26 | 27 | } 28 | 29 | } -------------------------------------------------------------------------------- /app/src/main/java/com/example/examplersqr/RVAdapter.java: -------------------------------------------------------------------------------- 1 | package com.example.examplersqr; 2 | 3 | import android.content.Context; 4 | import android.support.v7.widget.RecyclerView; 5 | import android.view.LayoutInflater; 6 | import android.view.View; 7 | import android.view.ViewGroup; 8 | import android.widget.LinearLayout; 9 | import android.widget.TextView; 10 | import android.widget.Toast; 11 | 12 | import java.util.ArrayList; 13 | import java.util.Random; 14 | 15 | /** 16 | * Copyright 2014 David Bleicher 17 | * 18 | * Licensed under the Apache License, Version 2.0 (the "License"); 19 | * you may not use this file except in compliance with the License. 20 | * You may obtain a copy of the License at 21 | * 22 | * http://www.apache.org/licenses/LICENSE-2.0 23 | * 24 | * Unless required by applicable law or agreed to in writing, software 25 | * distributed under the License is distributed on an "AS IS" BASIS, 26 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 27 | * See the License for the specific language governing permissions and 28 | * limitations under the License. 29 | * 30 | * Initial version created 11/10/2014 31 | */ 32 | public class RVAdapter 33 | extends RecyclerView.Adapter 34 | implements View.OnClickListener { 35 | 36 | // Some dark background colors to spice up 37 | // our title in the display (Black, Red, Green, Blue) 38 | private static final int[] bgColors = { 39 | 0xAA000000, 40 | 0xFF800000, 41 | 0xFF008000, 42 | 0xFF000080 43 | }; 44 | 45 | // Some darker background colors to spice up 46 | // our subtitle in the display (Black, Red, Green, Blue) 47 | private static final int[] sbgColors = { 48 | 0xFF000000, 49 | 0xFF600000, 50 | 0xFF006000, 51 | 0xFF000060 52 | }; 53 | 54 | // Get a Random generated to pick a cell's 55 | // background color from the list above. 56 | private static Random randy = new Random(); 57 | 58 | 59 | // Hold the position of the expanded item 60 | private int expandedPosition = -1; 61 | 62 | 63 | private ArrayList mDataset; 64 | private Context mContext; 65 | 66 | 67 | public RVAdapter (Context context, ArrayList myDataset) { 68 | this.mDataset = myDataset; 69 | this.mContext = context; 70 | } 71 | 72 | @Override 73 | public RVAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 74 | // Create a new view by inflating the row item xml. 75 | View v = LayoutInflater 76 | .from(parent.getContext()) 77 | .inflate(R.layout.cell_example, parent, false); 78 | 79 | ViewHolder holder = new ViewHolder(v); 80 | 81 | // Sets the click adapter for the entire cell 82 | // to the one in this class. 83 | holder.itemView.setOnClickListener(RVAdapter.this); 84 | holder.itemView.setTag(holder); 85 | 86 | return holder; 87 | } 88 | 89 | @Override 90 | public int getItemCount() { 91 | return mDataset.size(); 92 | } 93 | 94 | @Override 95 | public void onBindViewHolder(RVAdapter.ViewHolder holder, int position) { 96 | 97 | int colorIndex = randy.nextInt(bgColors.length); 98 | holder.tvTitle.setText(mDataset.get(position)); 99 | holder.tvTitle.setBackgroundColor(bgColors[colorIndex]); 100 | holder.tvSubTitle.setBackgroundColor(sbgColors[colorIndex]); 101 | 102 | if (position == expandedPosition) { 103 | holder.llExpandArea.setVisibility(View.VISIBLE); 104 | } else { 105 | holder.llExpandArea.setVisibility(View.GONE); 106 | } 107 | } 108 | 109 | @Override 110 | public void onClick(View view) { 111 | ViewHolder holder = (ViewHolder) view.getTag(); 112 | String theString = mDataset.get(holder.getPosition()); 113 | 114 | // Check for an expanded view, collapse if you find one 115 | if (expandedPosition >= 0) { 116 | int prev = expandedPosition; 117 | notifyItemChanged(prev); 118 | } 119 | // Set the current position to "expanded" 120 | expandedPosition = holder.getPosition(); 121 | notifyItemChanged(expandedPosition); 122 | 123 | Toast.makeText(mContext, "Clicked: "+theString, Toast.LENGTH_SHORT).show(); 124 | } 125 | 126 | /** 127 | * Create a ViewHolder to represent your cell layout 128 | * and data element structure 129 | */ 130 | public static class ViewHolder extends RecyclerView.ViewHolder { 131 | TextView tvTitle; 132 | TextView tvSubTitle; 133 | LinearLayout llExpandArea; 134 | 135 | public ViewHolder(View itemView) { 136 | super(itemView); 137 | 138 | tvTitle = (TextView) itemView.findViewById(R.id.tvTitle); 139 | tvSubTitle = (TextView) itemView.findViewById(R.id.tvSubTitle); 140 | llExpandArea = (LinearLayout) itemView.findViewById(R.id.llExpandArea); 141 | } 142 | } 143 | } 144 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/examplersqr/TargetedSwipeRefreshLayout.java: -------------------------------------------------------------------------------- 1 | package com.example.examplersqr; 2 | 3 | import android.content.Context; 4 | import android.support.v4.view.ViewCompat; 5 | import android.support.v4.widget.SwipeRefreshLayout; 6 | import android.util.AttributeSet; 7 | import android.view.View; 8 | import android.widget.AbsListView; 9 | 10 | /** 11 | * Extended SwipeRefreshLayout (SRL) that let's you specify the scrollable view to use. 12 | * 13 | * The standard SwipeRefreshLayout, which this extends, requires that the scrollable view 14 | * is a --direct-- descendant (and the only descendant). It does this in order to know which 15 | * child view to ask "Can you scroll up?" to determine if it should run the refresh or just allow 16 | * the child to scroll. 17 | * 18 | * Sometimes, however, you want to have multiple views inside the layout. For example, you 19 | * might want a FrameLayout with both a toolbar and a listview/recyclerview to 20 | * hold the content. Use this class to place any number of views withing the SRL, and tell this 21 | * class which one of them is the "scrollable" view. 22 | * 23 | * Created by David Bleicher on 1/2/15. 24 | * 25 | */ 26 | public class TargetedSwipeRefreshLayout extends SwipeRefreshLayout { 27 | private View myScrollableView = null; 28 | 29 | public TargetedSwipeRefreshLayout(Context context) { 30 | super(context); 31 | } 32 | 33 | public TargetedSwipeRefreshLayout(Context context, AttributeSet attrs) { 34 | super(context, attrs); 35 | } 36 | 37 | /** 38 | * Specify the target scrollable view 39 | * @param view 40 | */ 41 | public void setTargetScrollableView(View view) { 42 | myScrollableView = view; 43 | } 44 | 45 | @Override 46 | public boolean canChildScrollUp() { 47 | 48 | if(myScrollableView == null) return false; 49 | 50 | if (android.os.Build.VERSION.SDK_INT < 14) { 51 | if (myScrollableView instanceof AbsListView) { 52 | final AbsListView absListView = (AbsListView) myScrollableView; 53 | return absListView.getChildCount() > 0 54 | && (absListView.getFirstVisiblePosition() > 0 || absListView.getChildAt(0) 55 | .getTop() < absListView.getPaddingTop()); 56 | } else { 57 | return myScrollableView.getScrollY() > 0; 58 | } 59 | } else { 60 | return ViewCompat.canScrollVertically(myScrollableView, -1); 61 | } 62 | } 63 | } 64 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dbleicher/recyclerview-grid-quickreturn/fdc44085e9c9df46225b434ff04ef6f988452d70/app/src/main/res/drawable-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/drawable-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dbleicher/recyclerview-grid-quickreturn/fdc44085e9c9df46225b434ff04ef6f988452d70/app/src/main/res/drawable-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/drawable-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dbleicher/recyclerview-grid-quickreturn/fdc44085e9c9df46225b434ff04ef6f988452d70/app/src/main/res/drawable-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/drawable-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dbleicher/recyclerview-grid-quickreturn/fdc44085e9c9df46225b434ff04ef6f988452d70/app/src/main/res/drawable-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 5 | 6 | 9 | 10 | 14 | 15 | 22 | 23 | 24 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /app/src/main/res/layout/cell_example.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 11 | 12 | 20 | 21 | 32 | 33 | 43 | 44 | 51 | 52 | 57 | 58 | 63 | 64 | 65 | 66 | 67 | -------------------------------------------------------------------------------- /app/src/main/res/menu/menu_main.xml: -------------------------------------------------------------------------------- 1 | 4 | 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 16dp 4 | 16dp 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Example RSQR 5 | Hello world! 6 | Settings 7 | 8 | 9 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 7 | 8 | 9 | --------------------------------------------------------------------------------