Android开发之图形图像与动画(三)Animation效果的XML实现

<SPAN style="FONT-SIZE: 18px"><set android:shareInterpolator="false" xmlns:android="http://schemas.android.com/apk/res/android">
<scale
android:interpolator="@android:anim/accelerate_decelerate_interpolator"
android:fromXScale="1.0"
android:toXScale="1.4"
android:fromYScale="1.0"
android:toYScale="0.6"
android:pivotX="50%"
android:pivotY="50%"
android:fillAfter="false"
android:duration="700" />
<set android:interpolator="@android:anim/decelerate_interpolator">
<scale
android:fromXScale="1.4"
android:toXScale="0.0"
android:fromYScale="0.6"
android:toYScale="0.0"
android:pivotX="50%"
android:pivotY="50%"
android:startOffset="700"
android:duration="400"
android:fillBefore="false" />
<rotate
android:fromDegrees="0"
android:toDegrees="-45"
android:toYScale="0.0"
android:pivotX="50%"
android:pivotY="50%"
android:startOffset="700"
android:duration="400" />
</set>
</set></SPAN>

<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha
android:fromAlpha="1.0"
android:toAlpha="0.0"
android:startOffset="500"
android:duration="2000"
/>
</set>

<set xmlns:android="http://schemas.android.com/apk/res/android">
<rotate
android:interpolator="@android:anim/accelerate_decelerate_interpolator"
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="50%"
android:pivotY="50%"
android:duration="2000"
/>
</set>

<set xmlns:android="http://schemas.android.com/apk/res/android">
<scale
android:interpolator="@android:anim/accelerate_decelerate_interpolator"
android:fromXScale="0.0"
android:toXScale="1.0"
android:fromYScale="0.0"
android:toYScale="1.0"
android:pivotX="50%"
android:pivotY="50%"
android:fillAfter="false"
android:duration="2000"
/>
</set>

<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fromXDelta="10"
android:toXDelta="100"
android:fromYDelta="10"
android:toYDelta="100"
android:duration="2000"
/>
</set>

public class Animation_XML_Activity extends Activity {
private Button button1;
private Button button2;
private Button button3;
private Button button4;
private ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_animation__xml_);
button1=(Button)findViewById(R.id.button_alpha);
button2=(Button)findViewById(R.id.button_rotate);
button3=(Button)findViewById(R.id.button_scale);
button4=(Button)findViewById(R.id.button_translate);
imageView=(ImageView)findViewById(R.id.imageview);
button1.setOnClickListener(new MyButton());
button2.setOnClickListener(new MyButton());
button3.setOnClickListener(new MyButton());
button4.setOnClickListener(new MyButton());
}
class MyButton implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.button_alpha:
Alpha();
break;
case R.id.button_rotate:
Rotate();
break;
case R.id.button_scale:
Scale();
break;
case R.id.button_translate:
Translate();
break;
default:
break;
}
}

}
public void Alpha() {
Animation animation=AnimationUtils.loadAnimation(Animation_XML_Activity.this, R.anim.alpha);
imageView.startAnimation(animation);
}
public void Rotate() {
Animation animation=AnimationUtils.loadAnimation(Animation_XML_Activity.this, R.anim.rotate);
imageView.startAnimation(animation);
}
public void Scale() {
Animation animation=AnimationUtils.loadAnimation(Animation_XML_Activity.this, R.anim.scale);
imageView.startAnimation(animation);
}
public void Translate() {
Animation animation=AnimationUtils.loadAnimation(Animation_XML_Activity.this, R.anim.translate);
imageView.startAnimation(animation);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_animation__xml_, menu);
return true;
}
}