├── .gitignore ├── LICENSE ├── README.md ├── app ├── build.gradle ├── proguard-rules.pro ├── src │ ├── androidTest │ │ └── java │ │ │ └── nevet │ │ │ └── me │ │ │ └── wcviewpagersample │ │ │ └── ApplicationTest.java │ └── main │ │ ├── AndroidManifest.xml │ │ ├── java │ │ └── nevet │ │ │ └── me │ │ │ └── wcviewpagersample │ │ │ └── SampleActivity.java │ │ └── res │ │ ├── drawable │ │ ├── a100.png │ │ ├── a200.png │ │ ├── a300.png │ │ └── a400.png │ │ ├── layout │ │ └── activity_sample.xml │ │ ├── menu │ │ └── menu_sample.xml │ │ ├── mipmap-hdpi │ │ └── ic_launcher.png │ │ ├── mipmap-mdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxhdpi │ │ └── ic_launcher.png │ │ ├── values-w820dp │ │ └── dimens.xml │ │ └── values │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml └── wcviewpager-sample.apk ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── settings.gradle └── wcviewpager ├── build.gradle ├── proguard-rules.pro └── src ├── androidTest └── java │ └── nevet │ └── me │ └── wcviewpager │ └── ApplicationTest.java └── main ├── AndroidManifest.xml └── java └── nevet └── me └── wcviewpager ├── ObjectAtPositionInterface.java ├── ObjectAtPositionPagerAdapter.java └── WrapContentViewPager.java /.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 | /*/build/ 19 | 20 | # Local configuration file (sdk path, etc) 21 | local.properties 22 | 23 | # Proguard folder generated by Eclipse 24 | proguard/ 25 | 26 | # Log Files 27 | *.log 28 | 29 | # Local files and idea 30 | *.iml 31 | .idea -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | The MIT License (MIT) 2 | 3 | Copyright (c) 2015 Raanan Nevet 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ## WCViewPager 2 | Android ViewPager that respects height of wrap_content. 3 | 4 | The WrapContentViewPager is an *almost* in-place replacement for a [android.support.v4.view.ViewPager](http://developer.android.com/reference/android/support/v4/view/ViewPager.html). 5 | When used with wrap_content height the WrapContentViewPager will resize to the height of the selected child view and smoothly change its height when ViewPager is Scrolled. 6 | 7 | **UPDATE BREAKING CHANGE! Support24: As of support library 24 there has been a change in PagerAdapter preventing the posibility to wrap it, in order to use WrapContentViewPager your PagerAdapter needs to implement the [ObjectAtPositionInterface](https://github.com/rnevet/WCViewPager/blob/master/wcviewpager/src/main/java/nevet/me/wcviewpager/ObjectAtPositionInterface.java) or extend the [ObjectAtPositionPagerAdapter](https://github.com/rnevet/WCViewPager/blob/master/wcviewpager/src/main/java/nevet/me/wcviewpager/ObjectAtPositionPagerAdapter.java).** 8 | 9 | Solution was inspired by answers to this StackOverflow question: http://stackoverflow.com/questions/8394681/android-i-am-unable-to-have-viewpager-wrap-content 10 | 11 | **This is a work in progress, so there still might be bugs and edge cases not covered. 12 | If you find a bug and open an Issue, please provide instructions how to reproduce it.** 13 | 14 | ### Including 15 | At the moment the easiest way to include the library is to copy the [classes](https://github.com/rnevet/WCViewPager/blob/master/wcviewpager/src/main/java/nevet/me/wcviewpager) into your project. 16 | 17 | The implementation relies the v4 support library ViewPager. 18 | 19 | ### Use 20 | Just like a ViewPager, either in an XML or Code. 21 | **UPDATE Support24: 22 | Your PagerAdapter needs to implement [ObjectAtPositionInterface](https://github.com/rnevet/WCViewPager/blob/master/wcviewpager/src/main/java/nevet/me/wcviewpager/ObjectAtPositionInterface.java)** 23 | 24 | #### Sample project 25 | A simple Sample (using TextViews and ImageViews) project is available for reference under [app](https://github.com/rnevet/WCViewPager/tree/master/app). 26 | You can install the [APK](https://github.com/rnevet/WCViewPager/blob/master/app/wcviewpager-sample.apk?raw=true) to see it in action. 27 | 28 | ### License 29 | This project is licensed under the terms of the [MIT license](https://github.com/rnevet/WCViewPager/blob/master/LICENSE). 30 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 24 5 | buildToolsVersion "22.0.1" 6 | 7 | defaultConfig { 8 | applicationId "nevet.me.wrapcontentviewpager" 9 | minSdkVersion 10 10 | targetSdkVersion 24 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 | compile 'com.android.support:appcompat-v7:24.2.1' 25 | compile 'com.android.support:design:24.2.1' 26 | compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5' 27 | compile project(':wcviewpager') 28 | } 29 | -------------------------------------------------------------------------------- /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 D:\Dev\Android\Android-SDK/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/androidTest/java/nevet/me/wcviewpagersample/ApplicationTest.java: -------------------------------------------------------------------------------- 1 | package nevet.me.wcviewpagersample; 2 | 3 | import android.app.Application; 4 | import android.test.ApplicationTestCase; 5 | 6 | /** 7 | * Testing Fundamentals 8 | */ 9 | public class ApplicationTest extends ApplicationTestCase { 10 | public ApplicationTest() { 11 | super(Application.class); 12 | } 13 | } -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 12 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | -------------------------------------------------------------------------------- /app/src/main/java/nevet/me/wcviewpagersample/SampleActivity.java: -------------------------------------------------------------------------------- 1 | package nevet.me.wcviewpagersample; 2 | 3 | import android.graphics.Color; 4 | import android.os.Bundle; 5 | import android.support.design.widget.TabLayout; 6 | import android.support.v4.view.ViewPager; 7 | import android.support.v7.app.AppCompatActivity; 8 | import android.view.Menu; 9 | import android.view.MenuItem; 10 | import android.view.View; 11 | import android.view.ViewGroup; 12 | import android.widget.ImageView; 13 | import android.widget.TextView; 14 | 15 | import com.nostra13.universalimageloader.core.ImageLoader; 16 | import com.nostra13.universalimageloader.core.ImageLoaderConfiguration; 17 | 18 | import java.util.ArrayList; 19 | import java.util.Random; 20 | 21 | import nevet.me.wcviewpager.ObjectAtPositionPagerAdapter; 22 | 23 | 24 | public class SampleActivity extends AppCompatActivity { 25 | 26 | private ViewPager viewPager; 27 | private TabLayout tabs; 28 | 29 | @Override 30 | protected void onCreate(Bundle savedInstanceState) { 31 | super.onCreate(savedInstanceState); 32 | setContentView(R.layout.activity_sample); 33 | 34 | viewPager = (ViewPager) findViewById(R.id.viewpager); 35 | 36 | // demo tab selection without scrolling 37 | tabs = (TabLayout) findViewById(R.id.tablayout); 38 | tabs.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() { 39 | @Override 40 | public void onTabSelected(TabLayout.Tab tab) { 41 | viewPager.setCurrentItem(tab.getPosition(), false); 42 | } 43 | 44 | @Override 45 | public void onTabUnselected(TabLayout.Tab tab) { 46 | 47 | } 48 | 49 | @Override 50 | public void onTabReselected(TabLayout.Tab tab) { 51 | 52 | } 53 | }); 54 | 55 | initTextViewsAdapter(); 56 | 57 | // Create global configuration and initialize ImageLoader with this config 58 | ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(this).build(); 59 | ImageLoader.getInstance().init(config); 60 | 61 | } 62 | 63 | @Override 64 | public boolean onCreateOptionsMenu(Menu menu) { 65 | // Inflate the menu; this adds items to the action bar if it is present. 66 | getMenuInflater().inflate(R.menu.menu_sample, menu); 67 | return true; 68 | } 69 | 70 | @Override 71 | public boolean onOptionsItemSelected(MenuItem item) { 72 | // Handle action bar item clicks here. The action bar will 73 | // automatically handle clicks on the Home/Up button, so long 74 | // as you specify a parent activity in AndroidManifest.xml. 75 | int id = item.getItemId(); 76 | 77 | //noinspection SimplifiableIfStatement 78 | if (id == R.id.action_textviews) { 79 | initTextViewsAdapter(); 80 | return true; 81 | } else if (id == R.id.action_imageviews) { 82 | initImageViewsAdapter(); 83 | } else if (id == R.id.action_imageviews_async) { 84 | initAsyncImageViewsAdapter(); 85 | } 86 | 87 | return super.onOptionsItemSelected(item); 88 | } 89 | 90 | private void initImageViewsAdapter() { 91 | ArrayList resArrayList = new ArrayList(); 92 | resArrayList.add(R.drawable.a100); 93 | resArrayList.add(R.drawable.a200); 94 | resArrayList.add(R.drawable.a300); 95 | resArrayList.add(R.drawable.a400); 96 | resArrayList.add(R.drawable.a200); 97 | resArrayList.add(R.drawable.a300); 98 | resArrayList.add(R.drawable.a100); 99 | 100 | ImageViewPagerAdapter adapter = new ImageViewPagerAdapter(resArrayList); 101 | viewPager.setAdapter(adapter); 102 | tabs.setupWithViewPager(viewPager); 103 | } 104 | 105 | private void initAsyncImageViewsAdapter() { 106 | ArrayList resArrayList = new ArrayList<>(); 107 | resArrayList.add("http://dummyimage.com/500x400/000/fff"); 108 | resArrayList.add("http://dummyimage.com/500x300/040/fff"); 109 | resArrayList.add("http://dummyimage.com/500x200/006/fff"); 110 | resArrayList.add("http://dummyimage.com/500x400/700/fff"); 111 | resArrayList.add("http://dummyimage.com/500x100/006/fff"); 112 | 113 | AsyncImageViewPagerAdapter adapter = new AsyncImageViewPagerAdapter(resArrayList); 114 | viewPager.setAdapter(adapter); 115 | tabs.setupWithViewPager(viewPager); 116 | } 117 | 118 | private void initTextViewsAdapter() { 119 | ArrayList stringArrayList = new ArrayList(); 120 | stringArrayList.add(getString(R.string.lorem_short)); 121 | stringArrayList.add(getString(R.string.lorem_medium)); 122 | stringArrayList.add(getString(R.string.lorem_long)); 123 | stringArrayList.add(getString(R.string.lorem_medium)); 124 | stringArrayList.add(getString(R.string.lorem_short)); 125 | 126 | TextViewPagerAdapter adapter = new TextViewPagerAdapter(stringArrayList); 127 | viewPager.setAdapter(adapter); 128 | tabs.setupWithViewPager(viewPager); 129 | } 130 | 131 | 132 | public class TextViewPagerAdapter extends ObjectAtPositionPagerAdapter { 133 | 134 | private final ArrayList strings; 135 | 136 | public TextViewPagerAdapter(ArrayList strings) { 137 | super(); 138 | this.strings = strings; 139 | } 140 | 141 | @Override 142 | public int getCount() { 143 | return strings.size(); 144 | } 145 | 146 | @Override 147 | public boolean isViewFromObject(View view, Object object) { 148 | return view.equals(object); 149 | } 150 | 151 | @Override 152 | public Object instantiateItemObject(ViewGroup container, int position) { 153 | View view = View.inflate(container.getContext(), android.R.layout.test_list_item, null); 154 | ((TextView)view.findViewById(android.R.id.text1)).setText(strings.get(position)); 155 | container.addView(view); 156 | 157 | // set Random background 158 | Random rnd = new Random(); 159 | int color = Color.argb(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256)); 160 | view.setBackgroundColor(color); 161 | 162 | return view; 163 | } 164 | 165 | @Override 166 | public void destroyItemObject(ViewGroup container, int position, Object object) { 167 | container.removeView((View) object); 168 | } 169 | 170 | @Override 171 | public CharSequence getPageTitle(int position) { 172 | return "View" + position; 173 | } 174 | } 175 | 176 | public class ImageViewPagerAdapter extends ObjectAtPositionPagerAdapter { 177 | 178 | private final ArrayList images; 179 | 180 | public ImageViewPagerAdapter(ArrayList imageResourceIds) { 181 | super(); 182 | this.images = imageResourceIds; 183 | } 184 | 185 | @Override 186 | public int getCount() { 187 | return images.size(); 188 | } 189 | 190 | @Override 191 | public boolean isViewFromObject(View view, Object object) { 192 | return view.equals(object); 193 | } 194 | 195 | @Override 196 | public Object instantiateItemObject(ViewGroup container, int position) { 197 | ImageView view = new ImageView(container.getContext()); 198 | view.setScaleType(ImageView.ScaleType.CENTER_CROP); 199 | view.setImageResource(images.get(position)); 200 | container.addView(view); 201 | return view; 202 | } 203 | 204 | @Override 205 | public void destroyItemObject(ViewGroup container, int position, Object object) { 206 | container.removeView((View) object); 207 | } 208 | 209 | @Override 210 | public CharSequence getPageTitle(int position) { 211 | return "View" + position; 212 | } 213 | } 214 | 215 | public class AsyncImageViewPagerAdapter extends ObjectAtPositionPagerAdapter { 216 | 217 | private final ArrayList images; 218 | 219 | public AsyncImageViewPagerAdapter(ArrayList imageUrls) { 220 | super(); 221 | this.images = imageUrls; 222 | } 223 | 224 | @Override 225 | public int getCount() { 226 | return images.size(); 227 | } 228 | 229 | @Override 230 | public boolean isViewFromObject(View view, Object object) { 231 | return view.equals(object); 232 | } 233 | 234 | @Override 235 | public Object instantiateItemObject(ViewGroup container, int position) { 236 | ImageView view = new ImageView(container.getContext()); 237 | view.setScaleType(ImageView.ScaleType.CENTER_CROP); 238 | container.addView(view); 239 | ImageLoader.getInstance().displayImage(images.get(position), view); 240 | return view; 241 | } 242 | 243 | @Override 244 | public void destroyItemObject(ViewGroup container, int position, Object object) { 245 | container.removeView((View) object); 246 | } 247 | 248 | @Override 249 | public CharSequence getPageTitle(int position) { 250 | return "View" + position; 251 | } 252 | } 253 | } 254 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/a100.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/src/main/res/drawable/a100.png -------------------------------------------------------------------------------- /app/src/main/res/drawable/a200.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/src/main/res/drawable/a200.png -------------------------------------------------------------------------------- /app/src/main/res/drawable/a300.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/src/main/res/drawable/a300.png -------------------------------------------------------------------------------- /app/src/main/res/drawable/a400.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/src/main/res/drawable/a400.png -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_sample.xml: -------------------------------------------------------------------------------- 1 | 6 | 7 | 11 | 12 | 16 | 17 | 23 | 24 | 33 | 34 | 35 | 36 | 43 | 44 | 48 | 49 | 53 | 54 | 55 | 56 | 57 | -------------------------------------------------------------------------------- /app/src/main/res/menu/menu_sample.xml: -------------------------------------------------------------------------------- 1 | 5 | 10 | 11 | 16 | 17 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /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 | WrapContentViewPager 3 | 4 | Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum 5 | Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. 6 | Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. 7 | Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /app/wcviewpager-sample.apk: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/app/wcviewpager-sample.apk -------------------------------------------------------------------------------- /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:2.1.3' 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 | -------------------------------------------------------------------------------- /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 | # Default value: -Xmx10248m -XX:MaxPermSize=256m 13 | # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 14 | 15 | # When configured, Gradle will run in incubating parallel mode. 16 | # This option should only be used with decoupled projects. More details, visit 17 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 18 | # org.gradle.parallel=true -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rnevet/WCViewPager/1df6244ef23390774c6ba49830967c2abb4d9a5f/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Sep 16 15:29:48 CEST 2016 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-2.2-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 | # For Cygwin, ensure paths are in UNIX format before anything is touched. 46 | if $cygwin ; then 47 | [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 48 | fi 49 | 50 | # Attempt to set APP_HOME 51 | # Resolve links: $0 may be a link 52 | PRG="$0" 53 | # Need this for relative symlinks. 54 | while [ -h "$PRG" ] ; do 55 | ls=`ls -ld "$PRG"` 56 | link=`expr "$ls" : '.*-> \(.*\)$'` 57 | if expr "$link" : '/.*' > /dev/null; then 58 | PRG="$link" 59 | else 60 | PRG=`dirname "$PRG"`"/$link" 61 | fi 62 | done 63 | SAVED="`pwd`" 64 | cd "`dirname \"$PRG\"`/" >&- 65 | APP_HOME="`pwd -P`" 66 | cd "$SAVED" >&- 67 | 68 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 69 | 70 | # Determine the Java command to use to start the JVM. 71 | if [ -n "$JAVA_HOME" ] ; then 72 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 73 | # IBM's JDK on AIX uses strange locations for the executables 74 | JAVACMD="$JAVA_HOME/jre/sh/java" 75 | else 76 | JAVACMD="$JAVA_HOME/bin/java" 77 | fi 78 | if [ ! -x "$JAVACMD" ] ; then 79 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 80 | 81 | Please set the JAVA_HOME variable in your environment to match the 82 | location of your Java installation." 83 | fi 84 | else 85 | JAVACMD="java" 86 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 87 | 88 | Please set the JAVA_HOME variable in your environment to match the 89 | location of your Java installation." 90 | fi 91 | 92 | # Increase the maximum file descriptors if we can. 93 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 94 | MAX_FD_LIMIT=`ulimit -H -n` 95 | if [ $? -eq 0 ] ; then 96 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 97 | MAX_FD="$MAX_FD_LIMIT" 98 | fi 99 | ulimit -n $MAX_FD 100 | if [ $? -ne 0 ] ; then 101 | warn "Could not set maximum file descriptor limit: $MAX_FD" 102 | fi 103 | else 104 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 105 | fi 106 | fi 107 | 108 | # For Darwin, add options to specify how the application appears in the dock 109 | if $darwin; then 110 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 111 | fi 112 | 113 | # For Cygwin, switch paths to Windows format before running java 114 | if $cygwin ; then 115 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 116 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 158 | function splitJvmOpts() { 159 | JVM_OPTS=("$@") 160 | } 161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 163 | 164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 165 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app', ':wcviewpager' 2 | -------------------------------------------------------------------------------- /wcviewpager/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | 3 | android { 4 | compileSdkVersion 24 5 | buildToolsVersion "22.0.1" 6 | 7 | defaultConfig { 8 | minSdkVersion 10 9 | targetSdkVersion 24 10 | versionCode 1 11 | versionName "1.0" 12 | } 13 | buildTypes { 14 | release { 15 | minifyEnabled false 16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 17 | } 18 | } 19 | } 20 | 21 | dependencies { 22 | compile fileTree(dir: 'libs', include: ['*.jar']) 23 | compile 'com.android.support:support-v4:24.2.1' 24 | } 25 | -------------------------------------------------------------------------------- /wcviewpager/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 D:\Dev\Android\Android-SDK/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 | -------------------------------------------------------------------------------- /wcviewpager/src/androidTest/java/nevet/me/wcviewpager/ApplicationTest.java: -------------------------------------------------------------------------------- 1 | package nevet.me.wcviewpager; 2 | 3 | import android.app.Application; 4 | import android.test.ApplicationTestCase; 5 | 6 | /** 7 | * Testing Fundamentals 8 | */ 9 | public class ApplicationTest extends ApplicationTestCase { 10 | public ApplicationTest() { 11 | super(Application.class); 12 | } 13 | } -------------------------------------------------------------------------------- /wcviewpager/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /wcviewpager/src/main/java/nevet/me/wcviewpager/ObjectAtPositionInterface.java: -------------------------------------------------------------------------------- 1 | package nevet.me.wcviewpager; 2 | 3 | /** 4 | * The MIT License (MIT) 5 | * 6 | * Copyright (c) 2015 Raanan Nevet 7 | * 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy 9 | * of this software and associated documentation files (the "Software"), to deal 10 | * in the Software without restriction, including without limitation the rights 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 | * copies of the Software, and to permit persons to whom the Software is 13 | * furnished to do so, subject to the following conditions: 14 | * 15 | * The above copyright notice and this permission notice shall be included in 16 | * all copies or substantial portions of the Software. 17 | * 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 | * THE SOFTWARE. 25 | */ 26 | 27 | /** 28 | * Interface defining a function for getting an object for a specific position. 29 | * PagerAdapters need to implement this interface to work with WrapContentPagerAdapter 30 | */ 31 | public interface ObjectAtPositionInterface { 32 | 33 | /** 34 | * Returns the Object for the provided position, null if position doesn't match an object (i.e. out of bounds) 35 | **/ 36 | Object getObjectAtPosition(int position); 37 | } 38 | -------------------------------------------------------------------------------- /wcviewpager/src/main/java/nevet/me/wcviewpager/ObjectAtPositionPagerAdapter.java: -------------------------------------------------------------------------------- 1 | package nevet.me.wcviewpager; 2 | /** 3 | * The MIT License (MIT) 4 | * 5 | * Copyright (c) 2015 Raanan Nevet 6 | * 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy 8 | * of this software and associated documentation files (the "Software"), to deal 9 | * in the Software without restriction, including without limitation the rights 10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 | * copies of the Software, and to permit persons to whom the Software is 12 | * furnished to do so, subject to the following conditions: 13 | * 14 | * The above copyright notice and this permission notice shall be included in 15 | * all copies or substantial portions of the Software. 16 | * 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 | * THE SOFTWARE. 24 | */ 25 | 26 | import android.support.v4.view.PagerAdapter; 27 | import android.util.SparseArray; 28 | import android.view.ViewGroup; 29 | 30 | /** 31 | * Simple implementation of @see ObjectAtPositionInterface can be extended by any custom adapter 32 | */ 33 | public abstract class ObjectAtPositionPagerAdapter extends PagerAdapter implements ObjectAtPositionInterface { 34 | protected SparseArray objects = new SparseArray<>(); 35 | 36 | @Override 37 | public final Object instantiateItem(ViewGroup container, int position) { 38 | Object object = instantiateItemObject(container, position); 39 | objects.put(position, object); 40 | return object; 41 | } 42 | 43 | /** 44 | * Replaces @see PagerAdapter#instantiateItem and handles objects tracking for getObjectAtPosition 45 | */ 46 | public abstract Object instantiateItemObject(ViewGroup container, int position); 47 | 48 | @Override 49 | public final void destroyItem(ViewGroup container, int position, Object object) { 50 | objects.remove(position); 51 | destroyItemObject(container, position, object); 52 | } 53 | 54 | /** 55 | * Replaces @see PagerAdapter#destroyItem and handles objects tracking for getObjectAtPosition 56 | */ 57 | public abstract void destroyItemObject(ViewGroup container, int position, Object object); 58 | 59 | 60 | @Override 61 | public Object getObjectAtPosition(int position) { 62 | return objects.get(position); 63 | } 64 | } 65 | -------------------------------------------------------------------------------- /wcviewpager/src/main/java/nevet/me/wcviewpager/WrapContentViewPager.java: -------------------------------------------------------------------------------- 1 | package nevet.me.wcviewpager; 2 | 3 | /** 4 | * The MIT License (MIT) 5 | * 6 | * Copyright (c) 2015 Raanan Nevet 7 | * 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy 9 | * of this software and associated documentation files (the "Software"), to deal 10 | * in the Software without restriction, including without limitation the rights 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 | * copies of the Software, and to permit persons to whom the Software is 13 | * furnished to do so, subject to the following conditions: 14 | * 15 | * The above copyright notice and this permission notice shall be included in 16 | * all copies or substantial portions of the Software. 17 | * 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 | * THE SOFTWARE. 25 | */ 26 | 27 | import android.content.Context; 28 | import android.support.v4.view.PagerAdapter; 29 | import android.support.v4.view.ViewPager; 30 | import android.util.AttributeSet; 31 | import android.util.Log; 32 | import android.view.Gravity; 33 | import android.view.View; 34 | 35 | 36 | public class WrapContentViewPager extends ViewPager { 37 | 38 | private static final String TAG = WrapContentViewPager.class.getSimpleName(); 39 | private int height = 0; 40 | private int decorHeight = 0; 41 | private int widthMeasuredSpec; 42 | 43 | private boolean animateHeight; 44 | private int rightHeight; 45 | private int leftHeight; 46 | private int scrollingPosition = -1; 47 | 48 | public WrapContentViewPager(Context context) { 49 | super(context); 50 | init(); 51 | } 52 | 53 | public WrapContentViewPager(Context context, AttributeSet attrs) { 54 | super(context, attrs); 55 | init(); 56 | } 57 | 58 | private void init() { 59 | addOnPageChangeListener(new OnPageChangeListener() { 60 | 61 | 62 | public int state; 63 | 64 | @Override 65 | public void onPageScrolled(int position, float offset, int positionOffsetPixels) {} 66 | 67 | @Override 68 | public void onPageSelected(int position) { 69 | if (state == SCROLL_STATE_IDLE) { 70 | height = 0; // measure the selected page in-case it's a change without scrolling 71 | Log.d(TAG, "onPageSelected:" + position); 72 | } 73 | } 74 | 75 | @Override 76 | public void onPageScrollStateChanged(int state) { 77 | this.state = state; 78 | } 79 | }); 80 | } 81 | 82 | @Override 83 | public void setAdapter(PagerAdapter adapter) { 84 | if(!(adapter instanceof ObjectAtPositionInterface)) { 85 | throw new IllegalArgumentException("WrapContentViewPage requires that PagerAdapter will implement ObjectAtPositionInterface"); 86 | } 87 | height = 0; // so we measure the new content in onMeasure 88 | super.setAdapter(adapter); 89 | } 90 | 91 | /** 92 | * Allows to redraw the view size to wrap the content of the bigger child. 93 | * 94 | * @param widthMeasureSpec with measured 95 | * @param heightMeasureSpec height measured 96 | */ 97 | @Override 98 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 99 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); 100 | 101 | widthMeasuredSpec = widthMeasureSpec; 102 | int mode = MeasureSpec.getMode(heightMeasureSpec); 103 | 104 | if (mode == MeasureSpec.UNSPECIFIED || mode == MeasureSpec.AT_MOST) { 105 | if(height == 0) { 106 | // measure vertical decor (i.e. PagerTitleStrip) based on ViewPager implementation 107 | decorHeight = 0; 108 | for (int i = 0; i < getChildCount(); i++) { 109 | View child = getChildAt(i); 110 | LayoutParams lp = (LayoutParams) child.getLayoutParams(); 111 | if(lp != null && lp.isDecor) { 112 | int vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK; 113 | boolean consumeVertical = vgrav == Gravity.TOP || vgrav == Gravity.BOTTOM; 114 | if(consumeVertical) { 115 | decorHeight += child.getMeasuredHeight() ; 116 | } 117 | } 118 | } 119 | 120 | // make sure that we have an height (not sure if this is necessary because it seems that onPageScrolled is called right after 121 | int position = getCurrentItem(); 122 | View child = getViewAtPosition(position); 123 | if (child != null) { 124 | height = measureViewHeight(child); 125 | } 126 | Log.d(TAG, "onMeasure height:" + height + " decor:" + decorHeight); 127 | 128 | } 129 | int totalHeight = height + decorHeight + getPaddingBottom() + getPaddingTop(); 130 | heightMeasureSpec = MeasureSpec.makeMeasureSpec(totalHeight, MeasureSpec.EXACTLY); 131 | Log.d(TAG, "onMeasure total height:" + totalHeight); 132 | } 133 | 134 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); 135 | } 136 | 137 | @Override 138 | public void onPageScrolled(int position, float offset, int positionOffsetPixels) { 139 | super.onPageScrolled(position, offset, positionOffsetPixels); 140 | // cache scrolled view heights 141 | if (scrollingPosition != position) { 142 | scrollingPosition = position; 143 | // scrolled position is always the left scrolled page 144 | View leftView = getViewAtPosition(position); 145 | View rightView = getViewAtPosition(position + 1); 146 | if (leftView != null && rightView != null) { 147 | leftHeight = measureViewHeight(leftView); 148 | rightHeight = measureViewHeight(rightView); 149 | animateHeight = true; 150 | Log.d(TAG, "onPageScrolled heights left:" + leftHeight + " right:" + rightHeight); 151 | } else { 152 | animateHeight = false; 153 | } 154 | } 155 | if (animateHeight) { 156 | int newHeight = (int) (leftHeight * (1 - offset) + rightHeight * (offset)); 157 | if (height != newHeight) { 158 | Log.d(TAG, "onPageScrolled height change:" + newHeight); 159 | height = newHeight; 160 | requestLayout(); 161 | invalidate(); 162 | } 163 | } 164 | } 165 | 166 | private int measureViewHeight(View view) { 167 | view.measure(getChildMeasureSpec(widthMeasuredSpec, getPaddingLeft() + getPaddingRight(), view.getLayoutParams().width), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); 168 | return view.getMeasuredHeight(); 169 | } 170 | 171 | protected View getViewAtPosition(int position) { 172 | if(getAdapter() != null) { 173 | Object objectAtPosition = ((ObjectAtPositionInterface) getAdapter()).getObjectAtPosition(position); 174 | if (objectAtPosition != null) { 175 | for (int i = 0; i < getChildCount(); i++) { 176 | View child = getChildAt(i); 177 | if (child != null && getAdapter().isViewFromObject(child, objectAtPosition)) { 178 | return child; 179 | } 180 | } 181 | } 182 | } 183 | return null; 184 | } 185 | 186 | 187 | } 188 | --------------------------------------------------------------------------------