安卓逐帧动画

来源：互联网发布：补水面膜知乎编辑：程序博客网时间：2024/04/30 20:21

通常有2种实现方式，代码或者XML

（1）、XML结合java代码方式实现
在res目录下新建anim文件夹，右键选这里写图片描述 `

<animation-list xmlns:android="http://schemas.android.com/apk/res/android"        android:oneshot="false" >    <item android:drawable="@drawable/horn0" android:duration="500" />    <item android:drawable="@drawable/horn1" android:duration="500" />    <item android:drawable="@drawable/horn2" android:duration="500" />    <item android:drawable="@drawable/horn3" android:duration="500" />    <item android:drawable="@drawable/horn4" android:duration="500" /></animation-list>

然后在代码中设置

    private void playImgAnim(ImageView imageView) {        animationDrawable = new AnimationDrawable();         imageView.setBackgroundResource(R.anim.frame_animation);        animationDrawable = (AnimationDrawable) imageView.getBackground();        if(!animationDrawable.isRunning())animationDrawable.start();    }

@Overridepublic void onStop() {    super.onStop();    if (animationDrawable.isRunning())  animationDrawable.stop();}

（2）全代码实现

public class MainActivity extends Activity {    private AnimationDrawable mAnimationDrawable;    private Drawable mDrawable;    private ImageView img;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mAnimationDrawable = new AnimationDrawable();        img = (ImageView) findViewById(R.id.imageView1);    }    public void click(View view)    {        switch (view.getId()) {        case R.id.btn1:            start();            break;        case R.id.btn2:            stop();            break;        }    }    private void stop() {      if(mAnimationDrawable.isRunning())      {          mAnimationDrawable.stop();      }    }    private void start() {        for (int i = 0; i < 5; i++) {            //第一个参数为ID名，第二个为资源属性是ID或者是Drawable，第三个为包名            int resourcesId = getResources().getIdentifier("horn" + i,                    "drawable", this.getPackageName());            mDrawable = getResources().getDrawable(resourcesId);            mAnimationDrawable.addFrame(mDrawable, 500);        }        mAnimationDrawable.setOneShot(false);        img.setBackgroundDrawable(mAnimationDrawable);        if(!mAnimationDrawable.isRunning()){         mAnimationDrawable.start();        }    }}

//xml布局

<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/imageView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        />     <Button          android:id="@+id/btn1"         android:onClick="click"         android:text="start"         android:layout_alignParentBottom="true"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         />     <Button         android:id="@+id/btn2"         android:onClick="click"         android:text="stop"         android:layout_alignParentRight="true"         android:layout_alignParentBottom="true"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         /></RelativeLayout>

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