1、在res/anim目录下新建XML文件：tween_anim.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha
android:fromAlpha="0.2"
android:toAlpha="1.0"
android:duration="3000"
android:repeatMode="reverse"
android:repeatCount="10" />
<scale
android:fromXScale="0.2"
android:toXScale="1.0"
android:fromYScale="0.2"
android:toYScale="1.0"
android:pivotX="50%"
android:pivotY="50%"
android:duration="3000"
android:repeatMode="reverse"
android:repeatCount="10" />
<translate
android:fromXDelta="50"
android:toXDelta="100"
android:fromYDelta="50"
android:toYDelta="100"
android:duration="3000"
android:repeatMode="restart"
android:repeatCount="10" />
<rotate
android:fromDegrees="0"
android:toDegrees="360"
android:duration="3000"
android:repeatMode="restart"
android:repeatCount="10" />
</set>
2、在res/layout目录下新建XML文件：tween_anim_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/imgTween"
android:src="@drawable/c01"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_weight="1.0" />
<Button
android:id="@+id/btnControl"
android:text="开始"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
3、Activity里面添加代码：
package com.bison;
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;
import android.widget.ImageView;
public class TweenAnimationDemo extends Activity {
// 声明一个开始停止的标识符
private boolean flags = true;
private ImageView imgTween;
private Button btnCtrl;
/** 初始化 */
public void init() {
imgTween = (ImageView) findViewById(R.id.imgTween);
// 声明Tween动画
final Animation anim = AnimationUtils.loadAnimation(this,
R.anim.tween_anim);
btnCtrl = (Button) findViewById(R.id.btnControl);
btnCtrl.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (flags) {
btnCtrl.setText("停止");
imgTween.startAnimation(anim);
flags = false;
} else {
btnCtrl.setText("开始");
imgTween.clearAnimation();
flags = true;
}
}
});
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tween_anim_layout);
init();
}
}
PS：Tween动画有alpha(透明)、scale(缩放)、translate(移动)、rotate(旋转)，每个有不同的定义，仔细研究。
