bind开启的服务可以掉服务里面的方法
特点是和Activity共死
服务都需要在清单中注册
我还在布局中添加了四个按钮的点击
package com.example.bindservice;
import com.example.bindservice.BindSevice.My;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
public class MainActivity extends Activity {
private My my;
private Conn conn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void start(View v){
Intent intent=new Intent(this,BindSevice.class);
conn = new Conn();
//bindService开启服务
//参数1:intent,包含要启动哪一个Service
//参数2:ServiceConnection接口,通过它可以接受服务开启或停止的消息
//参数3:开启服务时操作的选项是,一般传入BIND_AUTO_CREATE自动创建Service
bindService(intent, conn, BIND_AUTO_CREATE);
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
unbindService(conn);//共死
}
public void unbind(View v){
unbindService(conn);
}
public void Service(View v){
my.showToast2("我去玩了");
}
class Conn implements ServiceConnection{
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
// TODO Auto-generated method stub
Log.e("tag","onServiceConnected");//IBinder返回非null时走这个方法
my = (My) service;
}
@Override
public void onServiceDisconnected(ComponentName name) {
// TODO Auto-generated method stub
//服务正常退出后不会掉用此方法
Log.e("tag","onServiceDisconnected");//链接断开,服务被销毁掉
}
}
}
可以通过局部内部类调用了服务类的方法,如果服务类通过IBinder将return new My();出去,不为null时在Activity中的Conn局部内部类的onServiceConnected方法将会执行
服务类可以写
package com.example.bindservice;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
public class BindSevice extends Service {
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
Log.e("tag","IBinder");
return new My();
}
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
Log.e("tag","onCreate");
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
Log.e("tag","onDestroy");
super.onDestroy();
}
public void showToast(String s){
Toast.makeText(getApplicationContext(), s, Toast.LENGTH_LONG).show();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
Log.e("tag","onStartCommand");
return super.onStartCommand(intent, flags, startId);
}
public class My extends Binder{
public void showToast2(String s){
showToast(s);
}
}
}
