(1) main.xml 代码如下:(声明四个按钮控件)

XML代码：

复制代码 代码如下:

android:id="@+id/widget32"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

xmlns:android="http://schemas.android.com/apk/res/android"

>

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"

>

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">

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">

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">

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">

java代码：

复制代码 代码如下:

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;

}

}

}

效果图：