Added library for Parallax effect, view pager and list of images behind this pager

Author: devnullorthrow

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 28
+    defaultConfig {
+        applicationId "com.yoksnod.parallaxbackroundviewpager"
+        minSdkVersion 21
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'com.android.support:appcompat-v7:28.0.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation project(':parallaxbackgroundviewpagerlibrary')
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.yoksnod.parallaxbackroundviewpager">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/yoksnod/parallaxbackroundviewpager/MainActivity.java

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+package com.yoksnod.parallaxbackroundviewpager;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentPagerAdapter;
+import android.support.v7.app.AppCompatActivity;
+
+import com.yoksnod.parallaxbackgroundviewpager.ParallaxBackgroundPageListener;
+import com.yoksnod.parallaxbackgroundviewpager.ParallaxBackgroundViewPager;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainActivity extends AppCompatActivity {
+
+    private ParallaxBackgroundViewPager pager;
+    private FragmentPagerAdapter adapter;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        pager = findViewById(R.id.pager);
+
+        final List<Integer> items = new ArrayList<>();
+        items.add(R.id.img3);
+        items.add(R.id.img2);
+        items.add(R.id.img1);
+
+        adapter = new ParallaxFragmentPagerAdapter(getSupportFragmentManager(), items);
+        pager.setAdapter(adapter);
+        pager.addOnPageChangeListener(new ParallaxBackgroundPageListener(this, pager, adapter, items));
+        pager.startAutoScroll();
+    }
+
+    private class ParallaxFragmentPagerAdapter extends FragmentPagerAdapter {
+
+        private final List<Integer> items;
+
+        public ParallaxFragmentPagerAdapter(FragmentManager fragmentManager, List<Integer> items) {
+            super(fragmentManager);
+            this.items = items;
+        }
+
+        @Override
+        public Fragment getItem(int i) {
+            return new PictureFragment();
+        }
+
+
+        @Override
+        public int getCount() {
+            return items.size();
+        }
+    }
+}

app/src/main/java/com/yoksnod/parallaxbackroundviewpager/PictureFragment.java

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+package com.yoksnod.parallaxbackroundviewpager;
+
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+public class PictureFragment extends Fragment {
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.item, container, false);
+    }
+}