1 . onServiceDisconnected 何時有CallBack :
並非 unBindService 就會觸發,此回應是Service 被異常銷毀(資源不足...等)
2 . IPC : 進程之間的通信 ( activity 和 Service 之間的參數傳遞 )
3 . activity onDestory 後 bindService 所執行的 Service 也會跟者終止
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導讀 :
1 . 建立帶有 Bind 的 Service
2 . 在 Activity 內建立 ServiceConnection 物件
在 Connection 的 CallBack 將 Service 建立出來
3 . 啟動 Service 和 帶入剛剛生成的物件
4 . 可控制 Service 了
This is a easy Sample
範例 :
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Bind" />
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="ServiceMethod" />
    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="unBind" />
</LinearLayout>
MainActivity.java
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity implements View.OnClickListener{
    private String TAG = "MainService";
    
    private Button btn_1;
    private Button btn_2;
    private Button btn_3;
    
    public MainService myService;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_1 = (Button)findViewById(R.id.button1);
        btn_2 = (Button)findViewById(R.id.button2);
        btn_3 = (Button)findViewById(R.id.button3);
        
        btn_1.setOnClickListener(this);
        btn_2.setOnClickListener(this);
        btn_3.setOnClickListener(this);
        
    }
    @Override
    public void onClick(View view) {
        switch(view.getId())
        {
        case R.id.button1:
            // 綁定 Service
            Intent serviceIntent = new Intent(this, MainService.class);
            this.bindService(serviceIntent, connection, Context.BIND_AUTO_CREATE);
            break;
        case R.id.button2:
            // 使用 Service 內的方法
            myService.uu();
            
            break;
            
        case R.id.button3:
            
            // 解除綁定 Service
            try{
                this.unbindService(connection);    
            } catch(Exception e){
                Log.d(TAG, e.toString());
            }
            
            break;
        }
    }
    public ServiceConnection connection = new ServiceConnection() {
        // 成功與 Service 建立連線
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            myService = ((MainService.MyBinder) service).getService();
            Log.d(TAG, "MainActivity onServiceConnected");
        }
        // 與 Service 建立連線失敗
        @Override
        public void onServiceDisconnected(ComponentName name) {
            myService = null;
            Log.d(TAG, "MainActivity onServiceFailed");
        }
    };
}
MainService.java
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
public class MainService extends Service { 
    private String TAG = "MainService";
    public MyBinder myBinder = new MyBinder(); 
    // 綁定此 Service 的物件
    public class MyBinder extends Binder { 
        public MainService getService() { 
            return MainService.this; 
        } 
    } 
    // 綁定
    @Override 
    public IBinder onBind(Intent intent) { 
        Log.d(TAG, "MainService onBind");
        return myBinder; 
    } 
    // 解除綁定
    @Override 
    public boolean onUnbind(Intent intent) { 
        Log.d(TAG, "MainService onUnbind");
        return super.onUnbind(intent); 
    } 
    @Override 
    public void onCreate() { 
        super.onCreate(); 
        Log.d(TAG, "MainService onCreate");
    } 
    @Override 
    public int onStartCommand(Intent intent, int flags, int startId) { 
        Log.d(TAG, "MainService onStartCommand");
        return super.onStartCommand(intent, flags, startId); 
    } 
    @Override 
    public void onDestroy() { 
        super.onDestroy(); 
        Log.d(TAG, "MainService onDestroy");
    } 
    // Service 測試用的 Method
    public void uu(){
        Log.d(TAG, "MainService uu");
    }
} 
Finish :
參考資料 : 來源
參考資料 : 程式碼
歡迎轉載,請註明出處。

 
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