activity绑定服务

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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");
}
};
}

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