android AnimationDrawable类实现动画效果
布局文件xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:background="#000000" tools:context=".MainActivity" > <ImageView android:id="@+id/imageView1" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </RelativeLayout>
MainActivity.java
package com.playgif; import android.app.Activity; import android.graphics.drawable.AnimationDrawable; import android.os.Bundle; import android.widget.ImageView; public class MainActivity extends Activity { ImageView imageView = null; AnimationDrawable animation = null;; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); imageView = (ImageView)findViewById(R.id.imageView1); imageView.setBackgroundResource(R.drawable.img_list); animation = (AnimationDrawable)imageView.getBackground(); //是否仅启动一次 animation.setOneShot(false); if(animation.isRunning()) { animation.stop();//停止 } animation.start();//启动 } }
img_list.xml
<?xml version="1.0" encoding="utf-8"?> <animation-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:drawable="@drawable/a1" android:duration="100" /> <item android:drawable="@drawable/a2" android:duration="100" /> <item android:drawable="@drawable/a3" android:duration="100" /> <item android:drawable="@drawable/a4" android:duration="100" /> <item android:drawable="@drawable/a5" android:duration="100" /> <item android:drawable="@drawable/a6" android:duration="100" /> <item android:drawable="@drawable/a7" android:duration="100" /> <item android:drawable="@drawable/a8" android:duration="100" /> <item android:drawable="@drawable/a9" android:duration="100" /> <item android:drawable="@drawable/a10" android:duration="100" /> <item android:drawable="@drawable/a11" android:duration="100" /> <item android:drawable="@drawable/a12" android:duration="100" /> </animation-list>
android:duration指的是延迟, 将要轮询播放的图片依次加入list列表。
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