activity绑定服务

我直接贴出代码 读者慢慢体会吧

接口

[java]  view plain  copy public interface ServiceInterface {      public void show();  }  

Service类

[java]  view plain  copy import android.app.Service;  import android.content.Intent;  import android.os.Binder;  import android.os.IBinder;  import android.util.Log;  import android.widget.Toast;    public class Service_01 extends Service {        private final String TAG = "Service--->";        private final IBinder binder = new MyBinder();            MyBinder mybinder = new MyBinder();            public class MyBinder extends Binder implements ServiceInterface {          /*show只是测试方法，可以不要*/          public void show() {              Toast.makeText(Service_01.this, "MyName is Service_01",                      Toast.LENGTH_LONG).show();          }          /*返回service服务，方便activity中得到*/          Service_01 getService() {              return Service_01.this;          }      }  /以上是为了测试绑定功能而做的准备        /*  绑定时执行*/      @Override      public IBinder onBind(Intent intent) {          Log.d(TAG, "onBind");          return binder;      }      /*只在创建时执行一次*/      @Override      public void onCreate() {          super.onCreate();          Log.d(TAG, "onCreate");      }      /*断开绑定或者stopService时执行*/      @Override      public void onDestroy() {          super.onDestroy();          Log.d(TAG, "onDestroy");      }         /* 当内存不够时执行改方法 */       @Override       public void onLowMemory() {       super.onLowMemory();       onDestroy();// 注销该service       }        /* 当从新尝试绑定时执行 */      @Override      public void onRebind(Intent intent) {          super.onRebind(intent);          Log.d(TAG, "onRebind");      }        @Override      public void onStart(Intent intent, int startId) {          super.onStart(intent, startId);          Log.d(TAG, "onStart");      }        /* ，每次startService都会执行该方法，而改方法执行后会自动执行onStart()方法 */      @Override      public int onStartCommand(Intent intent, int flags, int startId) {          Log.d(TAG, "onStartCommand-->flags=" + flags + "  startId=" + startId);                    return super.onStartCommand(intent, flags, startId);      }      /*断开绑定时执行*/      @Override      public boolean onUnbind(Intent intent) {          Log.d(TAG, "onUnbind");          return super.onUnbind(intent);      }  }  

Activity测试类

[java]  view plain  copy 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.view.View.OnClickListener;  import android.widget.Button;    public class TestService extends Activity {      /** Called when the activity is first created. */      /*注册按钮*/      private Button start = null;      private Button stop = null;      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);          start = (Button)findViewById(R.id.button_01);          start.setOnClickListener(new OnClickListener() {                            @Override              public void onClick(View v) {                  /*绑定service*/                  Intent bindIntent = new Intent(TestService.this, Service_01.class);                  bindService(bindIntent, sconnection, Context.BIND_AUTO_CREATE);              }          });                    stop = (Button)findViewById(R.id.button_02);          stop.setOnClickListener(new OnClickListener() {                            @Override              public void onClick(View v) {                  /*断开绑定service*/                  unbindService(sconnection);              }          });      }      private Service_01 serviceBinder;     /* 注册接口方法*/      ServiceInterface mService = null;     /* 绑定service监听*/      ServiceConnection sconnection = new ServiceConnection() {          /*当绑定时执行*/          public void onServiceConnected(ComponentName name, IBinder service) {              Log.d("activity--->", "已绑定到service");              mService = (ServiceInterface) service;              if (mService != null) {                  mService.show();//测试方法              }              Intent intent = new Intent();//这里只是为了下面传intent对象而构建的，没有实际意义              /*绑定后就可以使用Service的相关方法和属性来开始你对Service的操作*/              serviceBinder = ((Service_01.MyBinder) service).getService();              /*比如：你可以掉用Service的onStartCommand()方法*/              serviceBinder.onStartCommand(intent, 0, 0);//0,0是我随意的参数                        }          /*当断开绑定时执行，但调用unbindService()时不会触发改方法*/          public void onServiceDisconnected(ComponentName name) {              Log.d("activity--->", "已断开绑定service");          }      };  }