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
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<?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
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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
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<?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
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<?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:
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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。
