Android 服务绑定与数据同步

Posted 2020-07-25

 1 package com.example.metrox.l15;
 2 
 3 import android.content.ComponentName;
 4 import android.content.Intent;
 5 import android.content.ServiceConnection;
 6 import android.os.IBinder;
 7 import android.provider.Settings;
 8 import android.support.v7.app.AppCompatActivity;
 9 import android.os.Bundle;
10 import android.view.View;
11 import android.widget.EditText;
12 import android.widget.Switch;
13 
14 public class MainActivity extends AppCompatActivity implements View.OnClickListener, ServiceConnection {
15     Intent intent;
16     EditText et;
17     MyService.Binder binder = null;
18     private boolean  isBind = false;
19     private  boolean isRuning = false;
20     @Override
21     public void onClick(View view) {
22         switch(view.getId()){
23             case R.id.btnStartService:
24                 intent = new Intent(MainActivity.this,MyService.class);
25                 et = (EditText) findViewById(R.id.editText);
26                 intent.putExtra("data",et.getText().toString());
27                 startService(intent);
28                 isRuning = true;
29                 break;
30             case R.id.btnStopService:
31                 if(isRuning){
32                     stopService(intent);
33                 }
34                 break;
35             case R.id.btnBindService:
36                 bindService(intent,this,BIND_AUTO_CREATE);
37                 isBind = true;
38                 break;
39             case R.id.btnUnBindService:
40                 if(isBind){
41                     unbindService(this);
42                     isBind = !isBind;
43                 }
44                 break;
45             case R.id.btnSyncData:
46                 if(binder != null){
47                    binder.setData(et.getText().toString());
48                 }
49                 break;
50         }
51     }
52 
53     @Override
54     protected void onCreate(Bundle savedInstanceState) {
55         super.onCreate(savedInstanceState);
56         setContentView(R.layout.activity_main);
57 
58         findViewById(R.id.btnStartService).setOnClickListener(this);
59         findViewById(R.id.btnStopService).setOnClickListener(this);
60         findViewById(R.id.btnBindService).setOnClickListener(this);
61         findViewById(R.id.btnUnBindService).setOnClickListener(this);
62         findViewById(R.id.btnSyncData).setOnClickListener(this);
63     }
64 
65     @Override
66     public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
67         System.out.println("服务已连接...");
68         binder = (MyService.Binder) iBinder;
69     }
70 
71     @Override
72     public void onServiceDisconnected(ComponentName componentName) {
73         System.out.println("服务已断开...");
74     }
75 }

 1 package com.example.metrox.l15;
 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     private boolean isRun = false;
10     private String data = "default";
11     public MyService() {
12     }
13 
14     @Override
15     public IBinder onBind(Intent intent) {
16         return  new Binder();
17     }
18 
19     public class Binder extends android.os.Binder{
20         public void setData(String data){
21             MyService.this.data = data;
22         }
23     }
24 
25     @Override
26     public int onStartCommand(Intent intent, int flags, int startId) {
27         System.out.println("服务已启动...");
28         data = intent.getStringExtra("data");
29 
30         return super.onStartCommand(intent, flags, startId);
31     }
32 
33     @Override
34     public void onCreate() {
35         super.onCreate();
36         System.out.println("服务已创建...");
37         isRun = true;
38         new Thread(){
39             @Override
40             public void run() {
41                 super.run();
42                 while (isRun){
43                     System.out.println(data);
44                     try {
45                         sleep(1000);
46                     } catch (InterruptedException e) {
47                         e.printStackTrace();
48                     }
49                 }
50             }
51         }.start();
52     }
53 
54     @Override
55     public void onDestroy() {
56         super.onDestroy();
57         isRun = false;
58         System.out.println("服务已消毁...");
59     }
60 }

 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.l15.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="停止服务"
22         android:id="@+id/btnStopService"
23         android:layout_marginTop="48dp"
24         android:longClickable="false"
25         android:layout_below="@+id/textView"
26         android:layout_centerHorizontal="true" />
27 
28     <Button
29         android:layout_width="wrap_content"
30         android:layout_height="wrap_content"
31         android:text="启动服务"
32         android:id="@+id/btnStartService"
33         android:layout_alignTop="@+id/btnStopService"
34         android:layout_alignParentLeft="true"
35         android:layout_alignParentStart="true" />
36     <Button
37         android:layout_width="wrap_content"
38         android:layout_height="wrap_content"
39         android:text="解绑服务"
40         android:id="@+id/btnUnBindService"
41         android:longClickable="false"
42         android:layout_alignTop="@+id/btnBindService"
43         android:layout_alignLeft="@+id/btnStopService"
44         android:layout_alignStart="@+id/btnStopService" />
45 
46     <Button
47         android:layout_width="wrap_content"
48         android:layout_height="wrap_content"
49         android:text="绑定服务"
50         android:id="@+id/btnBindService"
51         android:layout_centerVertical="true"
52         android:layout_alignParentLeft="true"
53         android:layout_alignParentStart="true" />
54 
55     <EditText
56         android:layout_width="match_parent"
57         android:layout_height="wrap_content"
58         android:id="@+id/editText"
59         android:layout_above="@+id/btnStartService"
60         android:layout_alignParentLeft="true"
61         android:layout_alignParentStart="true"
62         android:text="默认数据" />
63 
64     <Button
65         android:layout_width="wrap_content"
66         android:layout_height="wrap_content"
67         android:text="同步数据"
68         android:id="@+id/btnSyncData"
69         android:layout_alignParentBottom="true"
70         android:layout_alignParentLeft="true"
71         android:layout_alignParentStart="true"
72         android:layout_marginBottom="74dp" />
73 </RelativeLayout>