EX03_12Activity

public class EX03_12Activity extends Activity {Button myButton;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                myButton = (Button)findViewById(R.id.button1);                myButton.setOnClickListener(new Button.OnClickListener(){public void onClick(View arg0) {// TODO Auto-generated method stubnew AlertDialog.Builder(EX03_12Activity.this).setTitle("对话框").setMessage("这是对话框").setPositiveButton("确定", new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stub}}).show();}});    }}

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