package com.example.yabushan.aidsservice;import android.app.Service;import android.content.Intent;import android.os.IBinder;//创建一个服务public class AppService extends Service {    public AppService() {    }    @Override    public IBinder onBind(Intent intent) {        // TODO: Return the communication channel to the service.        throw new UnsupportedOperationException("Not yet implemented");    }    @Override    public void onCreate() {        super.onCreate();        System.out.println("service on start");    }    @Override    public void onDestroy() {        super.onDestroy();        System.out.println("service deastroy");    }}

　　

package com.example.yabushan.anotherapp;import android.content.ComponentName;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;//另一个apppublic class MainActivity extends AppCompatActivity implements View.OnClickListener {    private Intent serviceIntent;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        serviceIntent=new Intent(); //传入上边App的包名以及service的类名        serviceIntent.setComponent(new ComponentName("com.example.yabushan.aidsservice","com.example.yabushan.aidsservice.AppService"));        findViewById(R.id.startService).setOnClickListener(this);        findViewById(R.id.stopService).setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()){            case R.id.startService:                startService(serviceIntent);                break;            case R.id.stopService:                stopService(serviceIntent);                break;        }    }}