Android 四种动画效果的调用实现代码

<?xml version="1.0" encoding="utf-8"?> 
<AbsoluteLayout 
android:id="@+id/widget32" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
xmlns:android="http://schemas.android.com/apk/res/android" 
> 
<TextView 
android:id="@+id/widget29" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/hello" 
android:layout_x="0px" 
android:layout_y="0px" 
> 
</TextView> 
<Button 
android:id="@+id/button_Alpha" 
android:layout_width="150px" 
android:layout_height="150px" 
android:text="Alpha动画" 
android:textSize="50px" 
android:layout_x="0px" 
android:layout_y="30px"> 
</Button> 
<Button 
android:id="@+id/button_Scale" 
android:layout_width="150px" 
android:layout_height="150px" 
android:text="Scale动画" 
android:textSize="50px" 
android:layout_x="0px" 
android:layout_y="180px"> 
</Button> 
<Button 
android:layout_width="150px" 
android:layout_height="150px" 
android:text="Translate动画" 
android:layout_x="161px" 
android:layout_y="30px" 
android:textSize="30px" 
android:id="@+id/button_Translate"> 
</Button> 
<Button 
android:id="@+id/button_Rotate" 
android:layout_width="150px" 
android:layout_height="150px" 
android:text="Rotate动画" 
android:layout_y="180px" 
android:layout_x="161px" 
android:textSize="44px"> 
</Button> 
</AbsoluteLayout> 

import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.animation.Animation; 
import android.view.animation.AnimationUtils; 
import android.widget.Button; 

public class myActionAnimation extends Activity implements OnClickListener { 
/** Called when the activity is first created. */ 
private Button button_alpha; 
private Button button_scale; 
private Button button_translate; 
private Button button_rotate; 
private Animation myAnimation_Alpha; 
private Animation myAnimation_Scale; 
private Animation myAnimation_Translate; 
private Animation myAnimation_Rotate; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 

button_alpha = (Button) findViewById(R.id.button_Alpha); 
button_alpha.setOnClickListener(this); 

button_scale = (Button) findViewById(R.id.button_Scale); 
button_scale.setOnClickListener(this); 

button_translate = (Button) findViewById(R.id.button_Translate); 
button_translate.setOnClickListener(this); 

button_rotate = (Button) findViewById(R.id.button_Rotate); 
button_rotate.setOnClickListener(this); 
} 
public void onClick(View button) { 
// TODO Auto-generated method stub 
switch (button.getId()) { 
case R.id.button_Alpha: { 
myAnimation_Alpha = AnimationUtils.loadAnimation(this,R.layout.my_alpha_action); 
button_alpha.startAnimation(myAnimation_Alpha); 
} 
break; 
case R.id.button_Scale: { 
myAnimation_Scale= AnimationUtils.loadAnimation(this,R.layout.my_scale_action); 
button_scale.startAnimation(myAnimation_Scale); 
} 
break; 
case R.id.button_Translate: { 
myAnimation_Translate= AnimationUtils.loadAnimation(this,R.layout.my_translate_action); 
button_translate.startAnimation(myAnimation_Translate); 
} 
break; 
case R.id.button_Rotate: { 
myAnimation_Rotate= AnimationUtils.loadAnimation(this,R.layout.my_rotate_action); 
button_rotate.startAnimation(myAnimation_Rotate); 
} 
break; 

default: 
break; 
} 
} 
}