Android“Hello World”问题

这是我写的代码

package com.test.AndroidApp;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;


public class TestAppActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        TextView tv = new TextView(this);
        tv.setText("Hello, Android....");
        setContentView(tv);
    }
}

我得到了这些错误

[2010-04-06 19:24:03 - Emulator] 2010-04-07 00:49:03.366 emulator[498:903] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz.
[2010-04-06 19:34:42 - TestApp] emulator-5554 disconnected! Cancelling 'com.test.AndroidApp.TestAppActivity activity launch'!

解决办法是什么????

谢谢