Initial commit

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 24
+    buildToolsVersion "24.0.1"
+
+    defaultConfig {
+        applicationId "com.github.rubensousa.viewpagercards"
+        minSdkVersion 14
+        targetSdkVersion 24
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    testCompile 'junit:junit:4.12'
+    compile 'com.android.support:design:24.2.0'
+    compile 'com.android.support:appcompat-v7:24.2.0'
+    compile 'com.android.support:cardview-v7:24.2.0'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /home/ruben/Android/Sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# 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 *;
+#}

app/src/androidTest/java/com/github/rubensousa/viewpagercards/ApplicationTest.java

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+package com.github.rubensousa.viewpagercards;
+
+import android.app.Application;
+import android.test.ApplicationTestCase;
+
+/**
+ * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
+ */
+public class ApplicationTest extends ApplicationTestCase<Application> {
+    public ApplicationTest() {
+        super(Application.class);
+    }
+}

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.github.rubensousa.viewpagercards">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        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/github/rubensousa/viewpagercards/CardAdapter.java

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+package com.github.rubensousa.viewpagercards;
+
+
+import android.support.v7.widget.CardView;
+
+public interface CardAdapter {
+
+    int MAX_ELEVATION_FACTOR = 8;
+
+    float getBaseElevation();
+
+    CardView getCardViewAt(int position);
+
+    int getCount();
+}

app/src/main/java/com/github/rubensousa/viewpagercards/CardFragment.java

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+package com.github.rubensousa.viewpagercards;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+import android.support.v7.widget.CardView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+
+public class CardFragment extends Fragment {
+
+    private CardView mCardView;
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
+                             @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.adapter, container, false);
+        mCardView = (CardView) view.findViewById(R.id.cardView);
+        mCardView.setMaxCardElevation(mCardView.getCardElevation()
+                * CardAdapter.MAX_ELEVATION_FACTOR);
+        return view;
+    }
+
+    public CardView getCardView() {
+        return mCardView;
+    }
+}

app/src/main/java/com/github/rubensousa/viewpagercards/CardFragmentAdapter.java

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+package com.github.rubensousa.viewpagercards;
+
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentStatePagerAdapter;
+import android.support.v7.widget.CardView;
+import android.view.View;
+import android.view.ViewGroup;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class CardFragmentAdapter extends FragmentStatePagerAdapter implements CardAdapter {
+
+    private List<CardFragment> mFragments;
+    private float mBaseElevation;
+
+    public CardFragmentAdapter(FragmentManager fm, float baseElevation) {
+        super(fm);
+        mFragments = new ArrayList<>();
+        mBaseElevation = baseElevation;
+
+        for(int i = 0; i< 5; i++){
+            addCardFragment(new CardFragment());
+        }
+    }
+
+    @Override
+    public float getBaseElevation() {
+        return mBaseElevation;
+    }
+
+    @Override
+    public CardView getCardViewAt(int position) {
+        return mFragments.get(position).getCardView();
+    }
+
+    @Override
+    public int getCount() {
+        return mFragments.size();
+    }
+
+    @Override
+    public Fragment getItem(int position) {
+        return mFragments.get(position);
+    }
+
+    @Override
+    public Object instantiateItem(ViewGroup container, int position) {
+        Object fragment = super.instantiateItem(container, position);
+        mFragments.set(position, (CardFragment) fragment);
+        return fragment;
+    }
+
+    public void addCardFragment(CardFragment fragment) {
+        mFragments.add(fragment);
+    }
+
+}

app/src/main/java/com/github/rubensousa/viewpagercards/CardPagerAdapter.java

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+package com.github.rubensousa.viewpagercards;
+
+import android.support.v4.view.PagerAdapter;
+import android.support.v7.widget.CardView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class CardPagerAdapter extends PagerAdapter implements CardAdapter {
+
+    private List<CardView> mViews;
+    private List<String> mData;
+    private float mBaseElevation;
+
+    public CardPagerAdapter() {
+
+        mData = new ArrayList<>();
+        mViews = new ArrayList<>();
+
+        for (int i = 0; i < 5; i++) {
+            mData.add("");
+            mViews.add(null);
+        }
+    }
+
+    public float getBaseElevation() {
+        return mBaseElevation;
+    }
+
+    @Override
+    public CardView getCardViewAt(int position) {
+        return mViews.get(position);
+    }
+
+    @Override
+    public int getCount() {
+        return mData.size();
+    }
+
+    @Override
+    public boolean isViewFromObject(View view, Object object) {
+        return view == object;
+    }
+
+    @Override
+    public Object instantiateItem(ViewGroup container, int position) {
+        View view = LayoutInflater.from(container.getContext())
+                .inflate(R.layout.adapter, container, false);
+        container.addView(view);
+        CardView cardView = (CardView) view.findViewById(R.id.cardView);
+
+        if (mBaseElevation == 0) {
+            mBaseElevation = cardView.getCardElevation();
+        }
+
+        cardView.setMaxCardElevation(mBaseElevation * MAX_ELEVATION_FACTOR);
+        mViews.set(position, cardView);
+        return view;
+    }
+
+    @Override
+    public void destroyItem(ViewGroup container, int position, Object object) {
+        container.removeView((View) object);
+        mViews.set(position, null);
+    }
+
+}

app/src/main/java/com/github/rubensousa/viewpagercards/MainActivity.java

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+package com.github.rubensousa.viewpagercards;
+
+import android.content.Context;
+import android.support.v4.view.ViewPager;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.util.DisplayMetrics;
+import android.view.View;
+import android.widget.Button;
+
+public class MainActivity extends AppCompatActivity implements View.OnClickListener {
+
+    private Button mButton;
+    private ViewPager mViewPager;
+
+    private CardPagerAdapter mCardAdapter;
+    private ShadowTransformer mCardShadowTransformer;
+    private CardFragmentAdapter mFragmentCardAdapter;
+    private ShadowTransformer mFragmentCardShadowTransformer;
+
+    private boolean mShowingFragments = false;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        mViewPager = (ViewPager) findViewById(R.id.viewPager);
+        mButton = (Button) findViewById(R.id.cardTypeBtn);
+        mButton.setOnClickListener(this);
+
+        mCardAdapter = new CardPagerAdapter();
+        mFragmentCardAdapter = new CardFragmentAdapter(getSupportFragmentManager(),
+                dpToPixels(2, this));
+
+        mCardShadowTransformer = new ShadowTransformer(mViewPager, mCardAdapter);
+        mFragmentCardShadowTransformer = new ShadowTransformer(mViewPager, mFragmentCardAdapter);
+
+        mViewPager.setAdapter(mCardAdapter);
+        mViewPager.setPageTransformer(false, mCardShadowTransformer);
+        mViewPager.setOffscreenPageLimit(2);
+    }
+
+    @Override
+    public void onClick(View view) {
+        if (!mShowingFragments) {
+            mButton.setText("Views");
+            mViewPager.setAdapter(mFragmentCardAdapter);
+            mViewPager.setPageTransformer(false, mFragmentCardShadowTransformer);
+        } else {
+            mButton.setText("Fragments");
+            mViewPager.setAdapter(mCardAdapter);
+            mViewPager.setPageTransformer(false, mCardShadowTransformer);
+        }
+
+        mShowingFragments = !mShowingFragments;
+    }
+
+    public static float dpToPixels(int dp, Context context) {
+        return dp * (context.getResources().getDisplayMetrics().density);
+    }
+}