ProgressDialog显示问题

@Override public void onCreate(Bundle savedInstanceState) {     // do all your other stuff here     new Handler().postDelayed(new Runnable() {         @Override         public void run() {             mProgressDialog = ProgressDialog.show(YouTube.this.getApplicationContext(), "", YouTube.this.getString(R.string.loading), true);             // start time consuming background process here         }     }, 1000); // starting it in 1 second }

在1.6上有时候
mProgressDialog = ProgressDialog.show(this, "", getString(R.string.loading), true)
 会出现错误 然后就在线程中加