在 AsyncTask 中使用等待

当使用wait in an AsyncTask, I get ERROR/AndroidRuntime(24230): Caused by: java.lang.IllegalMonitorStateException: object not locked by thread before wait()

是否可以使用Asynctask只是为了等待？如何？

Thanks

class WaitSplash extends AsyncTask<Void, Void, Void> {
    protected Void doInBackground(Void... params) {
        try {
            wait(MIN_SPLASH_DURATION);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }       

    protected void onPostExecute() {
        waitSplashFinished = true;
        finished();
    }
}  

Use 线程.sleep() http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html#sleep%28long%29代替wait().