安卓：AsyncTask的，我的第一个任务还没有完成的时候启动等 [英] Android: AsyncTask, my 1st task has not finished when the other starts

问题描述

下面是我的code在我的主线程

Here's my code in my main thread

            myAsyncRunnable mar = new myAsyncRunnable(GameActivity.this);
            mar.execute("fire");
            PhotoTask photoTask = new PhotoTask(camera,surfaceCamera,isPreview,holder,GameActivity.this);
            photoTask.execute(null);

在myAsyncRunnable.fire（）我有一个循环，改变gameActivity一个ImageView的10倍的图像。我想photoTask开始时的最后一个图像已更改

in myAsyncRunnable.fire() I have a loop that changes 10 times the image of an ImageView in gameActivity. I want the photoTask to start when the last image has been changed

@Override
protected Void doInBackground(String... params) {
fire();
return null;
}

public void fire() {
        final ImageView image3 = (ImageView) gameactivity.findViewById(R.id.imageView3);
        final int drawables[] = new int[] {R.drawable.fire1,R.drawable.fire2,R.drawable.fire3,R.drawable.fire4,R.drawable.fire5,R.drawable.fire6,R.drawable.fire7,R.drawable.fire8,R.drawable.fire9,R.drawable.fire10,R.drawable.fire11,R.drawable.fire12,R.drawable.fire13,R.drawable.fire14,R.drawable.fire15,R.drawable.fire16};
        for (int i=0;i<drawables.length;i++) {
            final int j=i;
            Runnable runnable = new Runnable() {
                @Override
                public void run() {
                    image3.setImageResource(drawables[j]);
                }
            };
            gameactivity.handler.postDelayed(runnable, 200*j);
        }
    }

但photoTask执行最后一次的形象已apperaed之前。这可能是由于postDelayed方法我都试过在方法onPostExecute（）来执行photoTask但它没有工作，要么

But photoTask executes before the last image has apperaed. This is probably due to the postDelayed method and I have tried to execute photoTask in the method onPostExecute() but it didn't work either

推荐答案

将 photoTask.execute（NULL）; 在 onPostExecute（）首的AsyncTask

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