ProgressDialog

public class ProgressActivity extends Activity implements OnClickListener{    /** Called when the activity is first created. */private Button submit;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        submit = (Button) findViewById(R.id.submit);        submit.setOnClickListener(this);//添加按钮的单击监听    }@Overrideprotected Dialog onCreateDialog(int id) {// TODO Auto-generated method stubProgressDialog dialog = new ProgressDialog(this);//构造进度框dialog.setTitle("测试对话框");dialog.setIndeterminate(true);dialog.setMessage("程序正在加载请稍后...");dialog.setCancelable(true);return dialog;}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubshowDialog(0);}}