进度对话框

方法：

public void click4(View view){

final ProgressDialog pd=new ProgressDialog(this);

pd.setTitle(“请稍等片刻！”);

pd.setMessage(“正在加载中……”);

pd.show();

new Thread(){

@Override

public void run() {

try {

Thread.sleep(3000);

} catch (InterruptedException e) {

e.printStackTrace();

}

pd.dismiss();

}

}.start();

}