changed the card animation

.idea/misc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="JDK" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
 </project>

app/src/nwd/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    package="com.mogo.launcher"
-    android:sharedUserId="android.uid.system">
+    package="com.mogo.launcher">
+<!--    android:sharedUserId="android.uid.system">-->
 
 
     <uses-permission android:name="android.permission.WAKE_LOCK" />

modules/mogo-module-main/src/main/java/com/mogo/module/main/MainActivity.java

@@ -65,6 +65,7 @@ public class MainActivity extends MvpActivity< MainView, MainPresenter > impleme
     private IMogoFragmentManager mMogoFragmentManager;
 
     private OrientedViewPager mCardsContainer;
+    private VerticalStackTransformer transformer;
     private CardModulesAdapter mCardModulesAdapter;
 
     private View mHeader;
@@ -127,7 +128,7 @@ public class MainActivity extends MvpActivity< MainView, MainPresenter > impleme
     protected void initViews() {
         mCardsContainer = findViewById( R.id.module_main_id_cards_container );
         mCardsContainer.setOrientation( OrientedViewPager.Orientation.VERTICAL );
-
+        transformer  = new VerticalStackTransformer( this );
         mCardsContainer.setOnPageChangeListener( mOnPageChangeListener = new OnPageChangeListenerAdapter() {
             private boolean mIsLast = true;
             private boolean mCardFlipStatus = false;
@@ -167,6 +168,7 @@ public class MainActivity extends MvpActivity< MainView, MainPresenter > impleme
                     }
                 } else if ( state == ViewPager.SCROLL_STATE_IDLE ) {
                     mCardFlipStatus = false;
+                    transformer.resetOffsetScroll();
                 }
 
                 int cardSize = mCardModulesAdapter.getCount();
@@ -185,6 +187,13 @@ public class MainActivity extends MvpActivity< MainView, MainPresenter > impleme
                 }
                 Log.i( TAG, "onPageScrollStateChanged cost " + ( System.currentTimeMillis() - start ) + "ms" );
             }
+
+            @Override
+            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+                super.onPageScrolled(position, positionOffset, positionOffsetPixels);
+                Logger.d(TAG,"pageScrolled : offset --- " + positionOffset);
+                transformer.offsetScrollChanged(positionOffset);
+            }
         } );
 
         mMogoFragmentManager = ( IMogoFragmentManager ) ARouter.getInstance().build( MogoServicePaths.PATH_FRAGMENT_MANAGER ).navigation( this );
@@ -320,7 +329,7 @@ public class MainActivity extends MvpActivity< MainView, MainPresenter > impleme
         List< IMogoModuleProvider > providers = mMogoModuleHandler.loadCardsModule();
         mCardModulesAdapter = new CardModulesAdapter( this, providers );
         mCardsContainer.setOffscreenPageLimit( providers.size() );
-        mCardsContainer.setPageTransformer( true, new VerticalStackTransformer( this ) );
+        mCardsContainer.setPageTransformer( true, transformer );
         mCardsContainer.setAdapter( mCardModulesAdapter );
 
         mCardCoverUpBottomLayout.setVisibility(View.VISIBLE);

modules/mogo-module-main/src/main/java/com/mogo/module/main/cards/VerticalStackTransformer.java

@@ -13,6 +13,7 @@ public class VerticalStackTransformer extends VerticalBaseTransformer {
     private Context context;
     private int spaceBetweenFirAndSecWith;//第一张卡片和第二张卡片宽度差
     private int spaceBetweenFirAndSecHeight;//第一张卡片和第二张卡片高度差
+    private float offsetScroll = 0.0f;//ViewPager滑动时变化幅度
 
     public VerticalStackTransformer( Context context ) {
         this.context = context;
@@ -26,14 +27,25 @@ public class VerticalStackTransformer extends VerticalBaseTransformer {
         this.spaceBetweenFirAndSecHeight = spaceBetweenFirAndSecHeight;
     }
 
+    public void offsetScrollChanged(float offset){
+        if(offset ==0){
+            return;
+        }
+        offsetScroll = offset;
+    }
+
+    public void resetOffsetScroll(){
+        offsetScroll = 0.0f;
+    }
+
     @Override
     protected void onTransform( View page, float position ) {
-        if ( position <= 0.0f ) {
+        if ( position == 0.0f ) {
             page.setAlpha( 1.0f );
             page.setTranslationY( 0f );
             //控制停止滑动切换的时候，只有最上面的一张卡片可以点击
             page.setClickable( true );
-        } else {
+        } else if(position>0){
             float scale = ( float ) ( page.getWidth() - spaceBetweenFirAndSecWith * position ) / ( float ) ( page.getWidth() );
             Logger.d("VerticalStackTransformer","scale :" + scale);
             //控制下面卡片的可见度
@@ -45,6 +57,20 @@ public class VerticalStackTransformer extends VerticalBaseTransformer {
             page.setScaleX( scale );
             page.setScaleY( scale );
             page.setTranslationY( -page.getHeight() * position + ( page.getHeight() * 0.5f ) * ( 1 - scale ) + spaceBetweenFirAndSecHeight * position );
+        }else{
+            float currentPage;
+            if(offsetScroll > 0.2f){
+                currentPage = 0.2f;
+            }else{
+                currentPage = offsetScroll;
+            }
+            page.setAlpha( 1 );
+            page.setScaleX(1-currentPage);
+            page.setScaleY(1-currentPage);
+            page.setPivotX( page.getWidth() / 2f );
+            page.setPivotY( page.getHeight() / 2f );
+            page.setTranslationY( 0f );
+            page.setClickable( false );
         }
     }
 }