本文实例讲述了Android编程中Tween动画和Frame动画实现方法。分享给大家供大家参考，具体如下：
Animation主要有两种动画模式：Tween动画和Frame动画
Tween动画由四种类型组成
res目录下新建anim创建Tween.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <!-- 透明 --> <alpha android:fromAlpha="1" android:toAlpha="0" android:duration="3000" /> <!-- 旋转 --> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="50%" android:pivotY="50%" android:duration="3000" /> <!-- 缩放 --> <scale android:fromXScale="1" android:fromYScale="1" android:toXScale="3" android:toYScale="3" android:pivotX="0" android:pivotY="0" android:duration="3000" /> <!-- 移动 --> <translate android:fromXDelta="0" android:fromYDelta="0" android:toXDelta="50%p" android:toYDelta="50%p" android:duration="3000" /> </set>
以上每个动画效果可放在不同的xml文件中已方便查看效果
下边是Activity中调用动画
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
imageView = (ImageView) findViewById(R.id.img);
}
public void onClick(View view) {
Animation animation = null;
switch (view.getId()) {
case R.id.alpha:
animation = AnimationUtils.loadAnimation(this, R.anim.alpha);
break;
case R.id.scale:
animation = AnimationUtils.loadAnimation(this, R.anim.scale);
break;
case R.id.translate:
animation = AnimationUtils.loadAnimation(this, R.anim.translate);
break;
case R.id.rotate:
//animation = AnimationUtils.loadAnimation(this, R.anim.rotate);
//令一种方式JavaCode中 创建RotateAnimation
animation = new RotateAnimation(0, 180, RotateAnimation.RELATIVE_TO_SELF, 0.5f, RotateAnimation.RELATIVE_TO_SELF, 0.5f);
animation.setDuration(3000);
break;
case R.id.all:
animation = AnimationUtils.loadAnimation(this, R.anim.Tween);
break;
}
//启动动画
imageView.startAnimation(animation);
}
Tween动画由四种类型组成
帧动画是有多张图片组成，多张图片循环。
示例：
Frame.xml
<?xml version="1.0" encoding="utf-8"?> <animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false"> <item android:drawable="@drawable/p1" android:duration="200" /> <item android:drawable="@drawable/p2" android:duration="200" /> <item android:drawable="@drawable/p3" android:duration="200" /> <item android:drawable="@drawable/p4" android:duration="200" /> <item android:drawable="@drawable/p5" android:duration="200" /> <item android:drawable="@drawable/p6" android:duration="200" /> <item android:drawable="@drawable/p7" android:duration="800" /> <item android:drawable="@drawable/p8" android:duration="200" /> <item android:drawable="@drawable/p9" android:duration="200" /> <item android:drawable="@drawable/p10" android:duration="200" /> <item android:drawable="@drawable/p11" android:duration="200" /> </animation-list>
main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@anim/frame" android:onClick="go" /> </LinearLayout>
Activity:
public void go(View view) {
// 获取ImageView
ImageView imageView = (ImageView) view;
// 获取ImageView上面的动画图片
AnimationDrawable drawable = (AnimationDrawable) imageView.getDrawable();
// 动画开始
drawable.start();
}
希望本文所述对大家Android程序设计有所帮助。
