Android 双进程守护

本地服务code：`
package app.project.service;

import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.os.RemoteException;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.Toast;

import app.project.IMyAidlInterface;

public class LocalService extends Service {
MyBinder binder;
MyConn conn;

@Nullable
@Override
public IBinder onBind(Intent intent) {
    return binder;
}

@Override
public void onCreate() {
    super.onCreate();
    binder = new MyBinder();
    conn = new MyConn();
}

class MyBinder extends IMyAidlInterface.Stub {
    @Override
    public String getServiceName() throws RemoteException {
        return LocalService.class.getSimpleName();
    }
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    Toast.makeText(LocalService.this, " 本地服务started", Toast.LENGTH_SHORT).show();
    this.bindService(new Intent(LocalService.this, RomoteService.class), conn, Context.BIND_IMPORTANT);
    return START_STICKY;
}

class MyConn implements ServiceConnection {
    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
    }

    @Override
    public void onServiceDisconnected(ComponentName name) {
        Toast.makeText(LocalService.this, "远程服务killed", Toast.LENGTH_SHORT).show();
        //开启远程服务
        LocalService.this.startService(new Intent(LocalService.this, RomoteService.class));
        //绑定远程服务
        LocalService.this.bindService(new Intent(LocalService.this, RomoteService.class), conn, Context.BIND_IMPORTANT);
    }
}

@Override
public void onDestroy() {
    super.onDestroy();
    //开启远程服务
    LocalService.this.startService(new Intent(LocalService.this, RomoteService.class));
    //绑定远程服务
    LocalService.this.bindService(new Intent(LocalService.this, RomoteService.class), conn, Context.BIND_IMPORTANT);

}

}

远程服务code:

package app.project.service;

import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.os.RemoteException;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.Toast;

import app.project.IMyAidlInterface;

public class RomoteService extends Service {
    MyConn conn;
    MyBinder binder;

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return binder;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        conn = new MyConn();
        binder = new MyBinder();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {

        Toast.makeText(this, " 远程服务started", Toast.LENGTH_SHORT).show();
        this.bindService(new Intent(this, LocalService.class), conn, Context.BIND_IMPORTANT);

        return START_STICKY;
    }

    class MyBinder extends IMyAidlInterface.Stub {
        @Override
        public String getServiceName() throws RemoteException {
            return RomoteService.class.getSimpleName();
        }
    }

    class MyConn implements ServiceConnection {

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {

        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            Toast.makeText(RomoteService.this, "本地服务killed", Toast.LENGTH_SHORT).show();

           //最关键的还是这两句话
            //开启本地服务
            RomoteService.this.startService(new Intent(RomoteService.this, LocalService.class));
            //绑定本地服务
            RomoteService.this.bindService(new Intent(RomoteService.this, LocalService.class), conn, Context.BIND_IMPORTANT);
        }

    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        //开启本地服务
        RomoteService.this.startService(new Intent(RomoteService.this, LocalService.class));
        //绑定本地服务
        RomoteService.this.bindService(new Intent(RomoteService.this, LocalService.class), conn, Context.BIND_IMPORTANT);

    }
}

aidl文件：
package app.project;

// Declare any non-default types here with import statements

interface IMyAidlInterface {
String getServiceName();
}
配置文件

<service
            android:name=".service.LocalService"
            android:enabled="true"
            android:exported="true" />
        <service
            android:name=".service.RomoteService"
            android:process=":romoteservice"
            android:enabled="true"
            android:exported="true">service>