创建工程
结构：
代码：
1 package hello.aaronwxb.cn;
2
3 import android.app.Activity;
4 import android.os.Bundle;
5 import android.util.Log;
6 import android.widget.TextView;
7
8 //private static final String TAG = "HelloAndroid";
9
10 public class HelloAndroidActivity extends Activity {
11 /** Called when the activity is first created. */
12 @Override
13 public void onCreate(Bundle savedInstanceState) {
14 super.onCreate(savedInstanceState);
15 TextView tv = new TextView(this);
16 tv.setText("This is a HELLOWORLD 例子");
17 setContentView(tv);
18 // setContentView(R.layout.main);
19 }
20 }
结果显示：
