拷贝程序

AndroidManifest.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.administrator.testapp">
 4
 5     <application
 6         android:allowBackup="true"
 7         android:icon="@mipmap/ic_launcher"
 8         android:label="@string/app_name"
 9         android:supportsRtl="true"
10         android:theme="@style/AppTheme">
11         <activity android:name=".MainActivity" />
12         <activity android:name=".test_activity6" />
13         <activity android:name=".TestActivity7"></activity>
14         <activity android:name=".TestActivity8" />
15         <activity android:name=".Main2Activity">
16             <intent-filter>
17                 <action android:name="android.intent.action.MAIN" />
18                 <category android:name="android.intent.category.LAUNCHER" />
19             </intent-filter>
20         </activity>
21     </application>
22
23 </manifest>

activity_mani2.xml

 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     tools:context="com.example.administrator.testapp.Main2Activity"
 7     android:orientation="vertical">
 8
 9     <Button
10         android:layout_width="match_parent"
11         android:layout_height="wrap_content"
12         android:text="模拟拷贝"
13         android:id="@+id/copy"/>
14     <Button
15         android:layout_width="match_parent"
16         android:layout_height="wrap_content"
17         android:text="消息机制"
18         android:id="@+id/xj"/>
19 </LinearLayout>

普通方法：

 1 package com.example.administrator.testapp;
 2
 3 import android.app.ProgressDialog;
 4 import android.os.Bundle;
 5 import android.os.Handler;
 6 import android.os.Message;
 7 import android.support.v7.app.AppCompatActivity;
 8 import android.view.View;
 9 import android.widget.Button;
10 import android.widget.TextView;
11 import android.widget.Toast;
12
13 public class Main2Activity extends AppCompatActivity
14 {
15     Button copy,xj;
16     @Override
17     protected void onCreate(Bundle savedInstanceState)
18     {
19         super.onCreate(savedInstanceState);
20         setContentView(R.layout.activity_main2);
21
22         copy=(Button)findViewById(R.id.copy);
23         copy.setOnClickListener(new View.OnClickListener()
24         {
25             @Override
26             public void onClick(View v)
27             {
28                 final ProgressDialog progressDialog=new ProgressDialog(Main2Activity.this);
29                 progressDialog.setTitle("拷贝进度");
30                 progressDialog.setMessage("拷贝中...");
31                 progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
32                 progressDialog.show();
33                 new Thread()
34                 {
35                     @Override
36                     public void run()
37                     {
38                         for (int i=0;i<=100;i++)
39                         {
40                             progressDialog.setProgress(i);
41                             try
42                             {
43                                 Thread.sleep(100);
44                             }
45                             catch (Exception e)
46                             {
47                                 e.printStackTrace();
48                             }
49                         }
50                         progressDialog.dismiss();
51                         runOnUiThread(new Runnable()
52                         {
53                             @Override
54                             public void run()
55                             {
56                                 Toast.makeText(Main2Activity.this, "拷贝完成", Toast.LENGTH_SHORT).show();
57                             }
58                         });
59                     }
60                 }.start();
61             }
62         });

消息机制

 1 public class Main2Activity extends AppCompatActivity
 2 {
 3     Button copy,xj;
 4     @Override
 5     protected void onCreate(Bundle savedInstanceState)
 6     {
 7         super.onCreate(savedInstanceState);
 8         setContentView(R.layout.activity_main2);
 9
10         xj=(Button)findViewById(R.id.xj);
11         xj.setOnClickListener(new View.OnClickListener()
12         {
13             @Override
14             public void onClick(View v)
15             {
16                 final ProgressDialog  progressdialog=new ProgressDialog(Main2Activity.this);
17                 progressdialog.setTitle("拷贝进度");
18                 progressdialog.setMessage("请稍后....");
19                 progressdialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
20                 progressdialog.show();
21                 new Thread(new Runnable()
22                 {
23                     @Override
24                     public void run()
25                     {
26                         for (int i=0;i<100;i++)
27                         {
28                             progressdialog.setProgress(i);
29                             try
30                             {
31                                 Thread.sleep(100);
32                             }
33                             catch (Exception e)
34                             {
35                                 e.printStackTrace();
36                             }
37                         }
38                         progressdialog.dismiss();
39                         runOnUiThread(new Runnable()
40                         {
41                             @Override
42                             public void run()
43                             {
44                                 Toast.makeText(Main2Activity.this, "拷贝完成！", Toast.LENGTH_SHORT).show();
45                             }
46                         });
47                     }
48                 }).start();
49             }
50         });
51     }
52 }