AnimationDrawable不打 [英] AnimationDrawable not playing

问题描述

所以，我希望我的动画，只要活动启动时创建的，但由于某种原因，不管我怎么努力会得到它开始。我可以得到它首先有一个click事件，但我希望它启动所有自己。

So I want my animation to start as soon as the activity is created, but for some reason no matter what I try will get it to start. I can get it to start by having a click event but I want it to start all on its own.

下面是我有什么，我如何得到这个工作？

Here's what I have and how do I get this to work?

package tween.learn;

import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.widget.ImageView;

public class Animate extends Activity {

    public ImageView image;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);


        ImageView tweenImage = (ImageView) findViewById(R.id.imageView1);
        tweenImage.setBackgroundResource(R.anim.cubicfacetween);

        AnimationDrawable frameAnimation = 
                           (AnimationDrawable) tweenImage.getBackground();
        frameAnimation.start();

        }



}

感谢

推荐答案

我觉得你有问题的看法初始化后，开始在动画完成。你应该能够做这样的事情：

I think you have to start the animation after initialization of the view in question is complete. You should be able to do something like:

final ImageView tweenImage = (ImageView) findViewById(R.id.imageView1);
tweenImage.setBackgroundResource(R.anim.cubicfacetween);      
tweenImage.post(new Runnable() {
    @Override
    public void run() {
        AnimationDrawable frameAnimation =
            (AnimationDrawable) tweenImage.getBackground();
        frameAnimation.start();
    }
}

修改 - 这个问题使我相信， onWindowFocusChanged 方法并不总是有效。它似乎简单，可能是一个更好的主意，如果你的作品。

Edit - this question led me to believe that the onWindowFocusChanged method won't always work. It does seem simpler and is probably a better idea if it works for you.

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