AsyncTask适用于Android 2.3.3，但不适用于ICS

Question

我有TabActivity，每个标签都有ActivityGroup。在Forth Tab中，ForthActivityGroup有一个MyAsyncActivity类。在MyAsyncAcitivity中，我有这个代码。 我有这个Android AsyncTask代码。调用doInBackground（String .. params）并在Android 2.3.3上打印日志，但不在Android 4.0上打印。请SomeBody告诉我我的想法？

public class getXML extends AsyncTask<String, Integer, String>{
        private final ProgressDialog dialog = new ProgressDialog(this);

        @Override
        protected void onPreExecute() {
            this.dialog.setMessage("Loading...");
            this.dialog.show();
        }

        @Override
        protected String doInBackground(String... params) {
            Log.d("Payment", "do background");

            return "result";
        }

        @Override
        protected void onPostExecute(String result) {
            if (this.dialog.isShowing()) {
                this.dialog.dismiss();
            }

    }

Answer 1

使用此：

AsyncTask task = new YourTask();
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.GINGERBREAD_MR1) {
   task.execute(params);
} else {
   task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, params);
}