Handle AnimationListener

With AnimationListener, we can monitor events of Animation, onAnimationEnd, onAnimationRepeat and onAnimationStart. It's a example modified from last exercise "Apply animation on Button". When any buttons clicked, animation will start on the image, and hide the buttons. When onAnimationEnd, the image disappear, and resume the buttons.





Modify from last exercise "Apply animation on Button", Keep anim_alpha.xml, anim_rotate.xml, anim_scale.xml and anim_translate.xml no change.

Modify main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:orientation="vertical" >

 <TextView
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="@string/hello" />
 <FrameLayout
     android:layout_width="fill_parent"
     android:layout_height="fill_parent">
     <LinearLayout
         android:id="@+id/layer_image"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
         android:orientation="vertical"
         android:gravity="center"
         >
         <ImageView
             android:id="@+id/image"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:src="@drawable/ic_launcher"/>
     </LinearLayout>
     <LinearLayout
         android:id="@+id/layer_buttons"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
         android:orientation="vertical"
         >
         <Button
             android:id="@+id/translate"
             android:layout_width="200dp"
             android:layout_height="wrap_content"
             android:layout_margin="10dp"
             android:text="Translate" />
         <Button
             android:id="@+id/alpha"
             android:layout_width="200dp"
             android:layout_height="wrap_content"
             android:layout_margin="10dp"
             android:text="Alpha" />
         <Button
             android:id="@+id/scale"
             android:layout_width="200dp"
             android:layout_height="wrap_content"
             android:layout_margin="10dp"
             android:text="Scale" />
         <Button
             android:id="@+id/rotate"
             android:layout_width="200dp"
             android:layout_height="wrap_content"
             android:layout_margin="10dp"
             android:text="Rotate" />
     </LinearLayout>

 </FrameLayout>
</LinearLayout>

Main activity

package com.exercise.AndroidAnimButtons;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;

public class AndroidAnimButtonsActivity extends Activity {
 
 LinearLayout layerImage;
 LinearLayout layerButtons;
 
 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.main);
  
     final Animation animTranslate = AnimationUtils.loadAnimation(this, R.anim.anim_translate);
     final Animation animAlpha = AnimationUtils.loadAnimation(this, R.anim.anim_alpha);
     final Animation animScale = AnimationUtils.loadAnimation(this, R.anim.anim_scale);
     final Animation animRotate = AnimationUtils.loadAnimation(this, R.anim.anim_rotate);
  
     animTranslate.setAnimationListener(animationListener);
     animAlpha.setAnimationListener(animationListener);
     animScale.setAnimationListener(animationListener);
     animRotate.setAnimationListener(animationListener);
  
     Button btnTranslate = (Button)findViewById(R.id.translate);
     Button btnAlpha = (Button)findViewById(R.id.alpha);
     Button btnScale = (Button)findViewById(R.id.scale);
     Button btnRotate = (Button)findViewById(R.id.rotate);
     final ImageView image = (ImageView)findViewById(R.id.image);
  
     layerImage = (LinearLayout)findViewById(R.id.layer_image);
     layerButtons = (LinearLayout)findViewById(R.id.layer_buttons);
     layerImage.setVisibility(View.INVISIBLE);
  layerButtons.setVisibility(View.VISIBLE);
  
     btnTranslate.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    layerImage.setVisibility(View.VISIBLE);
    layerButtons.setVisibility(View.INVISIBLE);
    image.startAnimation(animTranslate);
   }});
  
     btnAlpha.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    layerImage.setVisibility(View.VISIBLE);
    layerButtons.setVisibility(View.INVISIBLE);
    image.startAnimation(animAlpha);
   }});
  
     btnScale.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    layerImage.setVisibility(View.VISIBLE);
    layerButtons.setVisibility(View.INVISIBLE);
    image.startAnimation(animScale);
   }});
  
     btnRotate.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    layerImage.setVisibility(View.VISIBLE);
    layerButtons.setVisibility(View.INVISIBLE);
    image.startAnimation(animRotate);
   }});
 }

 AnimationListener animationListener
 = new AnimationListener(){

  @Override
  public void onAnimationEnd(Animation arg0) {
   // TODO Auto-generated method stub
   layerImage.setVisibility(View.INVISIBLE);
   layerButtons.setVisibility(View.VISIBLE);
  }

  @Override
  public void onAnimationRepeat(Animation animation) {
   // TODO Auto-generated method stub
   
  }

  @Override
  public void onAnimationStart(Animation animation) {
   // TODO Auto-generated method stub
   
  }
  
 };
}

Download the files.