本文主要讲解Android中帧动画的使用，首先准备好需要的图片资源，本文转载自：http://blog.csdn.net/jwzhangjie/article/details/18323101，
其中的图片资源在：http://download.csdn.net/download/jwzhangjie/6852981。
首先在res目录下建立anim目录，添加3个xml文件：load_animation_1, load_animation_2, load_animation_3，文件内容分别如下：
load_animation_1:
<?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/qb_tenpay_loading_1"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_2"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_3"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_4"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_5"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_6"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_7"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_8"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_9"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_10"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_11"
android:duration="150"></item>
<item android:drawable="@drawable/qb_tenpay_loading_12"
android:duration="150"></item>
</animation-list>
load_animation_2:
<?xml version="1.0" encoding="utf-8"?>
<!-- 根标签为animation-list，其中oneshot代表着是否只
展示一遍，设置为false会不停的循环播放动画根标签下，通过
item标签对动画中的每一个图片进行声明
android:duration 表示展示所用的该图片的时间长度 -->
<animation-list
xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false">
<item android:drawable="@drawable/common_loading_0"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_1"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_2"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_3"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_4"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_5"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_6"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_7"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_8"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_9"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_10"
android:duration="150"></item>
<item android:drawable="@drawable/common_loading_11"
android:duration="150"></item>
</animation-list>
wifi_animation_1.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/wifi_1"
android:duration="150"></item>
<item android:drawable="@drawable/wifi_2"
android:duration="150"></item>
<item android:drawable="@drawable/wifi_3"
android:duration="150"></item>
<item android:drawable="@drawable/wifi_4"
android:duration="150"></item>
<item android:drawable="@drawable/wifi_5"
android:duration="150"></item>
<item android:drawable="@drawable/wifi_6"
android:duration="150"></item>
</animation-list>
然后在MainActivity中通过setBackgroundResource(R.anim.load_animation_1)来为ImageView设置背景资源，并通过getBackground()方法来获得背景动态图片，返回的是一个AnimationDrawable对象，通过该对象的start()方法和stop()方法可以启动或者停止动态图片的效果，具体代码如下：
public class MainActivity extends AppCompatActivity {
private Button button1, button2, button3;
private ImageView animationIV;
private ImageView animationIV2;
private ImageView animationIV3;
private AnimationDrawable AniDraw, AniDraw2, AniDraw3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1 = (Button) findViewById(android.R.id.button1);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(AniDraw.isRunning()) {
AniDraw.stop();
} else {
AniDraw.start();
}
}
});
button2 = (Button) findViewById(android.R.id.button2);
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(AniDraw2.isRunning()) {
AniDraw2.stop();
} else {
AniDraw2.start();
}
}
});
button3 = (Button) findViewById(android.R.id.button3);
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(AniDraw3.isRunning()) {
AniDraw3.stop();
} else {
AniDraw3.start();
}
}
});
animationIV = (ImageView) findViewById(R.id.animationIV);
animationIV.setBackgroundResource(R.anim.load_animation_1);
AniDraw = (AnimationDrawable) animationIV.getBackground();
animationIV2 = (ImageView)findViewById(R.id.animationIV2);
AniDraw2 = (AnimationDrawable)animationIV2.getDrawable();
animationIV3 = (ImageView)findViewById(R.id.animationIV3);
animationIV3.setImageResource(R.anim.wifi_animation_1);
AniDraw3 = (AnimationDrawable)animationIV3.getDrawable();
}
}
总结：
- 在anim文件夹下定义动画xml文件
- 通过<animation-list>标签来定义帧动画，其中oneshot代表着是否只展示一遍，设置为false会不停的循环播放动画
- 通过设置ImageView的setImageResource()来设置ImageView的动画效果，并且通过getDrawable()来获得ImageView的动画图片
- 通过设置ImageView的setBackgroundResource()方法来设置
ImageView的动画效果，并且通过getBackground()来获得
ImageView的动画图片 - 通过设置AnimationDrawable的start()和stop()方法可以启动或停止动画效果
