View（视图）——对话框之进度对话框

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:paddingBottom="@dimen/activity_vertical_margin"
 7     android:paddingLeft="@dimen/activity_horizontal_margin"
 8     android:paddingRight="@dimen/activity_horizontal_margin"
 9     android:paddingTop="@dimen/activity_vertical_margin"
10     tools:context="com.example.wang.testapp2.TestActivity5"
11     android:orientation="vertical">
12 
13     <Button
14         android:layout_width="match_parent"
15         android:layout_height="wrap_content"
16         android:text="普通进度对话框"
17         android:onClick="bt8_OnClick"
18         />
19 
20     <Button
21         android:layout_width="match_parent"
22         android:layout_height="wrap_content"
23         android:text="水平进度对话框"
24         android:onClick="bt9_OnClick"
25         />
26     <TextView
27         android:layout_width="match_parent"
28         android:layout_height="wrap_content"
29         android:text="运行结果"
30         android:id="@+id/tv_2"/>
31 
32 
33 </LinearLayout>

  1 package com.example.wang.testapp2;
  2 
  3 import android.app.AlertDialog;
  4 import android.app.DatePickerDialog;
  5 import android.app.ProgressDialog;
  6 import android.app.TimePickerDialog;
  7 import android.content.DialogInterface;
  8 import android.opengl.ETC1Util;
  9 import android.support.v7.app.AppCompatActivity;
 10 import android.os.Bundle;
 11 import android.view.LayoutInflater;
 12 import android.view.View;
 13 import android.widget.DatePicker;
 14 import android.widget.EditText;
 15 import android.widget.ImageView;
 16 import android.widget.TextView;
 17 import android.widget.TimePicker;
 18 import android.widget.Toast;
 19 
 20 import java.util.Calendar;
 21 
 22 public class TestActivity5 extends AppCompatActivity {
 23 
 24     @Override
 25     protected void onCreate(Bundle savedInstanceState) {
 26         super.onCreate(savedInstanceState);
 27         setContentView(R.layout.activity_test5);
 28 
 29     }
 30 
 31 
 32     //普通进度对话框
 33     public void bt8_OnClick(View v) {
 34         final ProgressDialog progressDialog = new ProgressDialog(this);
 35 
 36         progressDialog.setMessage("请等待...");
 37         progressDialog.setTitle("进度对话框");
 38         progressDialog.setCancelable(false);
 39 
 40         progressDialog.show();
 41 
 42 
 43         //开启子线程
 44         //实现多线程：1-继承 2-实现接口
 45 
 46         //1.继承Thread，重写run()，调用start()
 47         new Thread() {
 48             @Override
 49             public void run() {
 50 
 51                 //业务代码
 52 
 53                 try {
 54                     //延时  线程
 55                     Thread.sleep(3000);
 56 
 57                 } catch (Exception e) {
 58 
 59                 }
 60 
 61                 //执行完业务代码
 62                 //关闭
 63                 progressDialog.dismiss();
 64             }
 65         }.start();//start负责启动子线程，自动执行run()
 66 
 67     }
 68 
 69 
 70     //水平进度对话框
 71     public void bt9_OnClick(View v)
 72     {
 73         final ProgressDialog progressDialog=new ProgressDialog(this);
 74 
 75         progressDialog.setTitle("水平进度对话框");
 76         progressDialog.setMessage("正在加载...");
 77         progressDialog.setCancelable(false);
 78 
 79         //设置成水平
 80         progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
 81 
 82         progressDialog.show();
 83 
 84         final TextView tv_2=(TextView)findViewById(R.id.tv_2);
 85 
 86         //启动子线程  实现接口  Runnable，run()
 87         new  Thread(new Runnable() {
 88             @Override
 89             public void run() {
 90 
 91                 //模拟进度变化
 92 
 93                 for (int i=0;i<=100;i++) {
 94 
 95                     progressDialog.setProgress(i);
 96 
 97                     try {
 98                         //延时  线程
 99                         Thread.sleep(200);
100 
101                     } catch (Exception e) {
102 
103                     }
104                 }
105 
106                 //在子线程里访问UI线程的View
107                 runOnUiThread(new Runnable() {
108                     @Override
109                     public void run() {
110 
111                         tv_2.setText("下载完成");
112 
113                     }
114                 });
115 
116                 //执行完业务代码
117                 //关闭
118                 progressDialog.dismiss();
119             }
120         }).start();
121 
122     }
123 }