Android Service 生命周期

 1 package com.example.metrox.l14;
 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 
11 public class MainActivity extends AppCompatActivity implements View.OnClickListener, ServiceConnection {
12 
13     Intent intent;
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.activity_main);
18         intent = new Intent(MainActivity.this,MyService.class);
19 //        findViewById(R.id.btnStartService).setOnClickListener(new View.OnClickListener() {
20 //            @Override
21 //            public void onClick(View view) {
22 //                 startService(intent);
23 //            }
24 //        });
25 
26 //        findViewById(R.id.btnStopService).setOnClickListener(new View.OnClickListener() {
27 //            @Override
28 //            public void onClick(View view) {
29 //                 stopService(intent);
30 //                 System.out.println("服务已停止！！！");
31 //            }
32 //        });
33         findViewById(R.id.btnStartService).setOnClickListener(this);
34         findViewById(R.id.btnStopService).setOnClickListener(this);
35         findViewById(R.id.btnBindService).setOnClickListener(this);
36         findViewById(R.id.btnUnBindService).setOnClickListener(this);
37     }
38 
39     @Override
40     public void onClick(View view) {
41         switch (view.getId()){
42             case  R.id.btnStartService:
43                 startService(intent);
44                 break;
45             case  R.id.btnStopService:
46                 stopService(intent);
47                 System.out.println("服务已停止！！！");
48                 break;
49             case  R.id.btnBindService:
50                 bindService(intent,this,BIND_AUTO_CREATE);
51                 break;
52             case  R.id.btnUnBindService:
53                 unbindService(this);
54                 break;
55         }
56     }
57 
58     @Override
59     public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
60          System.out.println("服务已连接...");
61     }
62 
63     @Override
64     public void onServiceDisconnected(ComponentName componentName) {
65          System.out.println("服务已断开...");
66     }
67 }

 1 package com.example.metrox.l14;
 2 
 3 import android.app.Service;
 4 import android.content.Intent;
 5 import android.os.Binder;
 6 import android.os.IBinder;
 7 
 8 public class MyService extends Service {
 9 
10     private boolean isRuning = false;
11     public MyService() {
12     }
13 
14     @Override
15     public IBinder onBind(Intent intent) {
16         return  new Binder();
17     }
18 
19     @Override
20     public int onStartCommand(Intent intent, int flags, int startId) {
21         System.out.println("OnStartCommand");
22         return super.onStartCommand(intent, flags, startId);
23     }
24 
25     @Override
26     public void onCreate() {
27         super.onCreate();
28         System.out.println("Service OnCreate");
29         isRuning = true;
30         new Thread(){
31             @Override
32             public void run() {
33                 super.run();
34                 while (isRuning){
35                     System.out.println("服务正在运行中...");
36                     try {
37                         sleep(1000);
38                     } catch (InterruptedException e) {
39                         e.printStackTrace();
40                     }}
41             }
42         }.start();
43     }
44 
45     @Override
46     public void onDestroy() {
47         super.onDestroy();
48         System.out.println("Service Destroy");
49         isRuning = false;
50     }
51 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <RelativeLayout 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.metrox.l14.MainActivity">
11 
12     <TextView
13         android:layout_width="wrap_content"
14         android:layout_height="wrap_content"
15         android:text="Hello World!"
16         android:id="@+id/textView" />
17 
18     <Button
19         android:layout_width="wrap_content"
20         android:layout_height="wrap_content"
21         android:text="启动服务"
22         android:id="@+id/btnStartService"
23         android:layout_below="@+id/textView"
24         android:layout_alignParentLeft="true"
25         android:layout_alignParentStart="true" />
26 
27     <Button
28         android:layout_width="wrap_content"
29         android:layout_height="wrap_content"
30         android:text="停止服务"
31         android:id="@+id/btnStopService"
32         android:layout_below="@+id/btnStartService"
33         android:layout_alignParentLeft="true"
34         android:layout_alignParentStart="true"
35         android:layout_marginTop="54dp" />
36 
37     <Button
38         android:layout_width="wrap_content"
39         android:layout_height="wrap_content"
40         android:text="绑定服务"
41         android:id="@+id/btnBindService"
42         android:layout_centerVertical="true"
43         android:layout_alignParentLeft="true"
44         android:layout_alignParentStart="true" />
45 
46     <Button
47         android:layout_width="wrap_content"
48         android:layout_height="wrap_content"
49         android:text="解绑服务"
50         android:id="@+id/btnUnBindService"
51         android:layout_below="@+id/btnBindService"
52         android:layout_alignParentLeft="true"
53         android:layout_alignParentStart="true"
54         android:layout_marginTop="70dp" />
55 </RelativeLayout>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.metrox.l14">
 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             <intent-filter>
13                 <action android:name="android.intent.action.MAIN" />
14 
15                 <category android:name="android.intent.category.LAUNCHER" />
16             </intent-filter>
17         </activity>
18 
19         <service
20             android:name=".MyService"
21             android:enabled="true"
22             android:exported="true"></service>
23     </application>
24 
25 </manifest>