- 帧动画，一张张图片不断的切换，形成动画效果
* 在drawable目录下定义xml文件，子节点为animation-list，在这里定义要显示的图片和每张图片的显示时长
* FrameAnimation
* 多张图片快速切换，形成动画效果
* drawable文件夹不放图片，只放资源文件
* ImageView显示图片可以设置内容（src），也可以设置背景（background）
<?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/g1" android:duration="200" />
<item android:drawable="@drawable/g2" android:duration="200" />
<item android:drawable="@drawable/g3" android:duration="200" />
<item android:drawable="@drawable/g4" android:duration="200" />
<item android:drawable="@drawable/g5" android:duration="200" />
<item android:drawable="@drawable/g6" android:duration="300" />
<item android:drawable="@drawable/g7" android:duration="300" />
<item android:drawable="@drawable/g8" android:duration="300" />
<item android:drawable="@drawable/g9" android:duration="200" />
<item android:drawable="@drawable/g10" android:duration="200" />
<item android:drawable="@drawable/g11" android:duration="200" />
</animation-list>
plusstolensee
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false">
<item android:drawable="@drawable/g1" android:duration="200" />
<item android:drawable="@drawable/g2" android:duration="200" />
<item android:drawable="@drawable/g3" android:duration="200" />
</animation-list>
* 在屏幕上播放帧动画
ImageView iv = (ImageView) findViewById(R.id.iv);
//把动画文件设置为imageView的背景
iv.setBackgroundResource(R.drawable.animations);
AnimationDrawable ad = (AnimationDrawable) iv.getBackground();
//播放动画
ad.start();
package com.itheima.frameanimation; import android.os.Bundle;
import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.view.Menu;
import android.widget.ImageView; public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); ImageView rocketImage = (ImageView) findViewById(R.id.iv);
//设置iv的背景图
rocketImage.setBackgroundResource(R.drawable.plusstolensee);
//获取iv的背景
AnimationDrawable rocketAnimation = (AnimationDrawable) rocketImage.getBackground();
//开始播放
rocketAnimation.start();
} }
MainActivity
<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"
tools:context=".MainActivity" > <ImageView
android:id="@+id/iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
/> </RelativeLayout>
activity_main