android的四大组件之一Service(服务的绑定)
怎么绑定服务,又怎么解除服务,代码如下:
MainActivity.java源码:
package com.example.lesson14_binder;
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.view.View;
/**
* 2013-6-18 下午2:22:00
*
* @author 乔晓松
*/
public class MainActivity extends Activity {
public MyService myService;
// 内部类获取连接对象
public ServiceConnection conn = new ServiceConnection() {
// 连接失败后调用的方法
@Override
public void onServiceDisconnected(ComponentName name) {
myService = null;
System.out.println("-----service Faild");
}
// 连接成功后调用的方法
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
myService = ((MyService.MyBinder) service).getService();
System.out.println("-----service connection");
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
// 绑定服务
public void bindService(View v) {
Intent serviceIntent = new Intent(this, MyService.class);
this.bindService(serviceIntent, conn, Context.BIND_AUTO_CREATE);
System.out.println("---------bindService");
}
// 解除绑定
public void unBindService(View v) {
this.unbindService(conn);
System.out.println("---------unBindService");
}
}
package com.example.lesson14_binder;
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.view.View;
/**
* 2013-6-18 下午2:22:00
*
* @author 乔晓松
*/
public class MainActivity extends Activity {
public MyService myService;
// 内部类获取连接对象
public ServiceConnection conn = new ServiceConnection() {
// 连接失败后调用的方法
@Override
public void onServiceDisconnected(ComponentName name) {
myService = null;
System.out.println("-----service Faild");
}
// 连接成功后调用的方法
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
myService = ((MyService.MyBinder) service).getService();
System.out.println("-----service connection");
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
// 绑定服务
public void bindService(View v) {
Intent serviceIntent = new Intent(this, MyService.class);
this.bindService(serviceIntent, conn, Context.BIND_AUTO_CREATE);
System.out.println("---------bindService");
}
// 解除绑定
public void unBindService(View v) {
this.unbindService(conn);
System.out.println("---------unBindService");
}
}
MyService.java源码:
package com.example.lesson14_binder;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
/**
* 2013-6-18 下午2:16:37
*
* @author 乔晓松
*/
public class MyService extends Service {
public MyBinder myBinder = new MyBinder();
// 绑定的时候执行
@Override
pu