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:orientation="vertical" 7     tools:context="com.wuxianedu.serviceoractivity.MainActivity"> 8  9     <ProgressBar android:id="@+id/jindu"10         android:layout_width="match_parent"11         android:layout_height="wrap_content"12         style="?android:attr/progressBarStyleHorizontal"13         />14     <Button android:id="@+id/wo"15         android:layout_width="wrap_content"16         android:layout_height="wrap_content"17         android:text="点我下载"/>18 19 </LinearLayout>

 1 package com.wuxianedu.serviceoractivity; 2  3 import android.content.ComponentName; 4 import android.content.Intent; 5 import android.content.ServiceConnection; 6 import android.os.IBinder; 7 import android.support.v7.app.AppCompatActivity; 8 import android.os.Bundle; 9 import android.view.View;10 import android.widget.ProgressBar;11 import android.widget.Toast;12 13 public class MainActivity extends AppCompatActivity implements View.OnClickListener {14     //new一个启动Service类15     private ServiceConnection serviceConnection16             ;17     private ProgressBar pop;18 19     @Override20     protected void onCreate(Bundle savedInstanceState) {21         super.onCreate(savedInstanceState);22         setContentView(R.layout.activity_main);23          pop = (ProgressBar) findViewById(R.id.jindu);24         findViewById(R.id.wo).setOnClickListener(this);25 26     }27 28     @Override29     public void onClick(View v) {30         switch (v.getId()){31             case R.id.wo:32                 //new了一个serviceConnection的回调事件，33                 if(serviceConnection == null){34                     serviceConnection = new ServiceConnection() {35                         @Override36                         public void onServiceConnected(ComponentName name, IBinder service) {37                                     //把Service里面的内部类堕胎为子类，来使用里面的方法38                             final MyService.Myhui myhui = (MyService.Myhui) service;39                                     //参数为new出来静态接口40                                 myhui.startDownload(new MyService.OnProgressChangeListener() {41                                     @Override42                                     public void onProgressChange(final int currentProgress) {43                                         //为进度条赋值44                                         pop.setMax(MyService.MAX);45                                         //多线程46                                         runOnUiThread(new Runnable() {47                                             @Override48                                             public void run() {49                                                 //为进度条赋值50                                                 pop.setProgress(currentProgress);51                                                 //判断当前值是否大于MAX,如果大于就是下载完了，52                                                 if(currentProgress >= MyService.MAX){53                                                     Toast.makeText(MainActivity.this, "下载完成！", Toast.LENGTH_SHORT).show();54                                                 }55                                             }56                                         });57 58                                     }59                                 });60                         }61                         @Override62                         public void onServiceDisconnected(ComponentName name) {63                            // Toast.makeText(MainActivity.this, "下载完成！", Toast.LENGTH_SHORT).show();64                         }65                     };66                 }67                 //启动Service服务68                 bindService(new Intent(this,MyService.class),serviceConnection,BIND_AUTO_CREATE);69                 break;70         }71     };72 }

 1 package com.wuxianedu.serviceoractivity; 2  3 import android.app.Service; 4 import android.content.Intent; 5 import android.os.Binder; 6 import android.os.IBinder; 7 import android.support.annotation.Nullable; 8 import android.util.Log; 9 10 /**11  * Created by Administrator on 2016/9/23.12  */13 public class MyService extends Service {14     private int currentProgress;15     public static int MAX = 100;16 17     @Nullable18     //回调事件19     @Override20     public IBinder onBind(Intent intent) {21         return new Myhui();22     }23 24     class Myhui extends Binder{25 26         /*public MyService getService(){27             return MyService.this;28         }*/29         public void startDownload (final OnProgressChangeListener onProgressChangeListener){30             new Thread(new Runnable() {31                 @Override32                 public void run() {33                     while (true){34                         currentProgress += 5;35                         Log.d("main","=================="+currentProgress+"");36                         //每次给接口里面的方法赋值37                         onProgressChangeListener.onProgressChange(currentProgress);38                         try {39                             Thread.sleep(1000L);40                         } catch (InterruptedException e) {41                             e.printStackTrace();42                         }43                         //判断当前值是否大于MAX最大值，如果大于跳出循环44                        if(currentProgress>=MAX){45                             break;46                         }47                     }48                 }49             }).start();50         }51     }52     //获取当前的值53     interface OnProgressChangeListener {54         void onProgressChange(int currentProgress);55     }56 }