Frame动画就像是gif图,通过一些静态图片来达到动画的效果。
Android sdk中的AnimationDrawable就是专门针对Frame动画,当然Frame动画也可在java代码或者xml中写,但是提倡大家还是在xml中写,先上个效果图。
<span style="font-size:18px;"><?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/market_loading_01"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_02"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_03"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_04"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_05"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_06"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_07"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_08"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_09"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_10"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_11"
android:duration="100"/>
<item
android:drawable="@drawable/market_loading_12"
android:duration="100"/>
</animation-list></span>
Frame动画在xml中的根节点是<animation-list>其中的oneshot=false是循环播放,为true的话则播放到最后一张图片就会停止播放,在java中调用
ImageView imageView;
AnimationDrawable animationDrawable;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.image);
imageView.setBackgroundResource(R.drawable.drawable_progress);
animationDrawable = (AnimationDrawable) imageView.getBackground();
animationDrawable.start();
因为Frame 动画是有一堆静态图构成的所以,可以当成background。
用java代码写的话
AnimationDrawable animationDrawable2 = new AnimationDrawable();
Drawable drawable = getResources().getDrawable(R.drawable.fengjing_1);
Drawable drawable2 = getResources().getDrawable(R.drawable.fengjing_2);
Drawable drawable3 = getResources().getDrawable(R.drawable.fengjing_3);
animationDrawable2.addFrame(drawable, 1000);
animationDrawable2.addFrame(drawable2, 1000);
animationDrawable2.addFrame(drawable3, 1000);
animationDrawable2.setOneShot(false);
imageView.setBackgroundDrawable(animationDrawable2);
animationDrawable2.start();
恩。。就是这样了,Frame 动画了解到这已经差不多了。