AsyncTask的使用方法

1.导入类：import android.os.AsyncTask;
2.以下办法：

	private TestAsyncTask mTestAsyncTask;
	private void testAsync() {
		if (mTestAsyncTask != null && mTestAsyncTask.getStatus() != AsyncTask.Status.FINISHED) {
			//cancel exsiting task first
			mTestAsyncTask.cancel(true);
		}
		mTestAsyncTask = new TestAsyncTask();
		mTestAsyncTask.execute();
	}
	private class TestAsyncTask extends AsyncTask<Void, Void, Void> {
		@Override
		protected Void doInBackground(Void... params) {
			//do background jobs here
			return null;
		}
		
		@Override
		protected void onPostExecute(Void result) {
			//finish jobs here
			super.onPostExecute(result);
		}

		@Override
		protected void onCancelled() {
			super.onCancelled();
		}
	}	priva