1 import android.app.Activity;
2 import android.app.ProgressDialog;
3 import android.os.Bundle;
4 import android.view.Menu;
5 import android.view.View;
6 import android.widget.Button;
7
8 public class MainActivity extends Activity {
9 ProgressDialog dialog=null;
10
11 @Override
12 protected void onCreate(Bundle savedInstanceState) {
13 super.onCreate(savedInstanceState);
14 setContentView(R.layout.activity_main);
15 Button btn=(Button) findViewById(R.id.btn);
16 btn.setOnClickListener(new View.OnClickListener() {
17 @Override
18 public void onClick(View arg0) {
19 dialog=new ProgressDialog(MainActivity.this);
20 dialog.setMax(100);//设置最大值
21 dialog.setTitle("安装进度");
22 dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置进度条样式，水平样式
23 dialog.show();//显示对话框
24
25 /*
26 * 定义一个线程，重写run（）方法
27 */
28 Thread thread=new Thread(){
29 public void run(){
30 while(true){
31 dialog.incrementProgressBy(1);//设置每次增加的进度
32 /**进度条的值超过100时，让进度条消失*/
33 if(dialog.getProgress()>=100){
34 dialog.dismiss();
35 }
36 try {
37 Thread.sleep(1000);
38 } catch (InterruptedException e) {
39 e.printStackTrace();
40 }
41 }
42 }
43 };
44 thread.start();//启动线程
45 }
46 });
47
48 }
49
50
51
52 @Override
53 public boolean onCreateOptionsMenu(Menu menu) {
54 // Inflate the menu; this adds items to the action bar if it is present.
55 getMenuInflater().inflate(R.menu.main, menu);
56 return true;
57 }
58
59 }
