我有一系列静止图像和共psented在绘制目录超过500图像$ P $的。我需要做一个动画（负载每秒约20幅图片）。我希望它平稳运行，没有内存溢出异常。

I've a series of still images and total of more than 500 images presented in drawable directory. I need to make an animation (load about 20 images per second). I want it to run smoothly and with no Out Of Memory Exception.

我已经构思可以做到这一点图像2至3秒（40至60个图像）应加载在内存和显示，然后就应该设置关闭（释放存储器），然后图像未来2至3秒应该加载。这种技术可以prevent内存溢出异常。它只是一个想法，我不知道是否它是一个好主意或没有。请指导我一些更好的主意了一些code一起去......如果我的想法是好多了，能正常工作，那么请告诉我一些帮助code做到这一点。

I've idea to do this that images for 2 to 3 seconds (40 to 60 images) should load in memory and displayed and then they should disposed off (release the memory) and then images for next 2 to 3 seconds should load. This technique can prevent Out Of Memory Exception. Its just an idea, I dont know whether its a good idea or not. Please guide me some better idea with some code to go with... If my idea is much better and can work then please tell me some helping code to do that.

在读的答复，做你的建议，我已经写了一些code是这样的：

After reading replies and doing as you suggest, I've written some code like this:

  <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/llMain">

<ViewFlipper android:id="@+id/imageflipper"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
<ImageView android:id="@+id/ImageView01"
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent"        
        android:scaleType="centerInside"        
        android:layout_gravity="center" />
    </ViewFlipper>
    </LinearLayout>

和这里是我的code做动画：

and here is my code for doing animation:

public class Animation extends Activity {
ViewFlipper flipper;
int myIndex = 216;
private final Handler handler = new Handler();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    flipper=(ViewFlipper)findViewById(R.id.imageflipper); 
    doTheAutoRefresh();
        //displayData();
}

private void doTheAutoRefresh() {
    handler.postDelayed(new Runnable() {
        public void run(){
            displayData(); // this is where you put your refresh code
            doTheAutoRefresh();
             }
         }, 30);

}

private void displayData()
{
    Resources r = getResources();
    if(myIndex > 230){
        myIndex = 216;
        ImageView myImg = (ImageView)findViewById(R.id.ImageView01);
        myImg.setImageResource(r.getIdentifier("drum0" + myIndex, "drawable", "com.vt.animation"));

        myIndex += 1;
        flipper.showNext();
    }
    else{
        ImageView myImg = (ImageView)findViewById(R.id.ImageView01);

        myImg.setImageResource(r.getIdentifier("drum0" + myIndex, "drawable", "com.vt.animation"));

        myIndex += 1;
        flipper.showNext();
    }
}

}

，但其很慢。我已经设置了刷新时间为30毫秒，但实际上它不是刷新太快，而它的刷新时间为1秒左右。任何建议，使之快，感觉像真正的动画？

but its very slow. I've set up the refresh time to 30 milliseconds but actually its not refreshing too fast rather its refresh time is about 1 second. Any suggestion to make it fast to feel like real animation?

谢谢

推荐答案

确定。最大的问题和我过了这么多天就要用最简单的解决方案。我绝不会想到，这将是那么容易做到的...：D

OK. The biggest problem and the easiest solution I got to go with after so many days. I would never expect that it would be so easy to do... :D

我用两个处理器和定时器实现与只是一个形象来看，没有脚蹼，没有动画没有别的都...这里是我的解决办法：

I've used both handler and timer to achieve with just an image view, no flipper, no animator nothing else at all... Here is my solution:

----- main.xml中的文件-----

----- main.xml file -----

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/background">

<ImageView 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:id="@+id/imageView1">
</ImageView>

和这里是我做了它的方式：

and here is the way I have done it:

public class MainActivity extends Activity {
private ImageView _imagView;
private Timer _timer;
private int _index;
private MyHandler handler;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    handler= new MyHandler();
    _imagView=(ImageView) findViewById(R.id.imageView1);

    _index=0;
    _timer= new Timer();
    _timer.schedule(new TickClass(), 500, 200);
}

private class TickClass extends TimerTask
{
    @Override
    public void run() {
        // TODO Auto-generated method stub
        handler.sendEmptyMessage(_index);
        _index++;
    }
}

private class MyHandler extends Handler
{
    @Override
    public void handleMessage(Message msg) {
        // TODO Auto-generated method stub
        super.handleMessage(msg);

        try {
                Bitmap bmp= BitmapFactory.decodeStream(MainActivity.this.getAssets().open("drum_"+_index+".png"));
                _imagView.setImageBitmap(bmp);

                Log.v("Loaing Image: ",_index+"");
        } catch (IOException e) {
            // TODO Auto-generated catch block
            Log.v("Exception in Handler ",e.getMessage());
        }
    }
}

}

注意：我已经放在我所有的图像，以资产目录

Note: I've placed all my images to asset directory.

它的那么简单，因为它可以，没有什么大的做...

Its so simple as it can, nothing big to do...

我希望这会有所帮助的人希望是这样的：）

I hope it'll be helpful for someone looking to go like this :)

感谢