Android动画之逐帧动画(FrameAnimation)详解

转载请注明出处：http://blog.csdn.net/xiaohao0724/article/details/54582965

Android中的动画,大概分为三种:

1、逐帧动画(FrameAnimation)

2、补间动画(TweenAnimation)


3、属性动画(PropertyAnimation)



今天我们就来学习逐帧动画,废话少说直接上效果图如下:



帧动画的实现方式有两种：

一、在res/drawable文件夹下新建animation-list的XML实现帧动画

1、首先在res/drawable文件夹下添加img00-img24共25张图片

2、新建frame_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="true" >

<!-- animation-list 帧动画 -->
<!-- android:oneshot的值为 false代表播放多次，true代表只播放一次 -->
<!-- duration代表每张图片的播放时间 ,定义一个持续时间为50毫秒的动画帧 -->
<item
android:drawable="@drawable/img00"
android:duration="50"/>
<item
android:drawable="@drawable/img01"
android:duration="50"/>
<item
android:drawable="@drawable/img02"
android:duration="50"/>
<item
android:drawable="@drawable/img03"
android:duration="50"/>
<item
android:drawable="@drawable/img04"
android:duration="50"/>
<item
android:drawable="@drawable/img05"
android:duration="50"/>
<item
android:drawable="@drawable/img06"
android:duration="50"/>
<item
android:drawable="@drawable/img07"
android:duration="50"/>
<item
android:drawable="@drawable/img08"
android:duration="50"/>
<item
android:drawable="@drawable/img09"
android:duration="50"/>
<item
android:drawable="@drawable/img10"
android:duration="50"/>
<item
android:drawable="@drawable/img11"
android:duration="50"/>
<item
android:drawable="@drawable/img12"
android:duration="50"/>
<item
android:drawable="@drawable/img13"
android:duration="50"/>
<item
android:drawable="@drawable/img14"
android:duration="50"/>
<item
android:drawable="@drawable/img15"
android:duration="50"/>
<item
android:drawable="@drawable/img16"
android:duration="50"/>
<item
android:drawable="@drawable/img17"
android:duration="50"/>
<item
android:drawable="@drawable/img18"
android:duration="50"/>
<item
android:drawable="@drawable/img19"
android:duration="50"/>
<item
android:drawable="@drawable/img20"
android:duration="50"/>
<item
android:drawable="@drawable/img21"
android:duration="50"/>
<item
android:drawable="@drawable/img22"
android:duration="50"/>
<item
android:drawable="@drawable/img23"
android:duration="50"/>
<item
android:drawable="@drawable/img24"
android:duration="50"/>

</animation-list>

3、在activity_main中添加控件

<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"
tools:context="com.havorld.frameanimation.MainActivity" >

<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
<!-- android:background="@drawable/frame_anim" -->

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="horizontal"
android:padding="10dp" >

<Button
android:id="@+id/start"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="播放" />

<Button
android:id="@+id/stop"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="停止" />
</LinearLayout>

</RelativeLayout>

4、在代码中获取并开启帧动画

public class MainActivity extends Activity implements OnClickListener {

private ImageView imageView;
private AnimationDrawable animationDrawable;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

imageView = (ImageView) findViewById(R.id.imageView);
findViewById(R.id.start).setOnClickListener(this);
findViewById(R.id.stop).setOnClickListener(this);

setXml2FrameAnim1();
// setXml2FrameAnim2();

}

/**
* 通过XML添加帧动画方法一
*/
private void setXml2FrameAnim1() {

// 把动画资源设置为imageView的背景,也可直接在XML里面设置
imageView.setBackgroundResource(R.drawable.frame_anim);
animationDrawable = (AnimationDrawable) imageView.getBackground();
}

/**
* 通过XML添加帧动画方法二
*/
private void setXml2FrameAnim2() {

// 通过逐帧动画的资源文件获得AnimationDrawable示例
animationDrawable = (AnimationDrawable) getResources().getDrawable(
R.drawable.frame_anim);
imageView.setBackground(animationDrawable);
}

@Override
public void onClick(View v) {

switch (v.getId()) {
case R.id.start:
if (animationDrawable != null && !animationDrawable.isRunning()) {
animationDrawable.start();
}
break;
case R.id.stop:
if (animationDrawable != null && animationDrawable.isRunning()) {
animationDrawable.stop();
}
break;

default:
break;
}
}

}

二、通过代码实现帧动画

/**
* 通过代码添加帧动画方法
*/
private void setSrc2FrameAnim() {

animationDrawable = new AnimationDrawable();
// 为AnimationDrawable添加动画帧
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img00), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img01), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img02), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img03), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img04), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img05), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img06), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img07), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img08), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img09), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img10), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img11), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img12), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img13), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img14), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img15), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img16), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img17), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img18), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img19), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img20), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img21), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img22), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img23), 50);
animationDrawable.addFrame(
getResources().getDrawable(R.drawable.img24), 50);
// 设置为循环播放
animationDrawable.setOneShot(false);
imageView.setBackground(animationDrawable);
}

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