远程服务例子

远程服务场景：应用需要调用其他应用服务中的方法，或调用底层服务中的方法。

aidl：

package com.example.aidl2;

interface IAidlBinder {

    boolean isUidExist(int uid);
}

远程服务：

public class AidlService extends Service {

    @Override
    public IBinder onBind(Intent intent) {
        return new AidlBinder();
    }

    public class AidlBinder extends IAidlBinder.Stub {

        @Override
        public boolean isUidExist(int uid) {
            return isUidSaved(uid);
        }
        
    }

    private boolean isUidSaved(int uid) {
        boolean result = false;
        String str = "1000|10012|10013|10087";
        if (str.contains(String.valueOf(uid))) {
            result = true;
        }
        return result;
    }
}

注册服务：

<service android:name="com.example.aidl2.AidlService">
    <intent-filter >
        <action android:name="com.example.aidl2.AidlService"/>
    </intent-filter>
</service>

其他应用调用：

public class MainActivity extends Activity {

    private IAidlBinder mService;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bindAidl();
        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                if (mService != null) {
                    try {
                        boolean uidExist = mService.isUidExist(10012);
                        System.out.println("uid是否存在" + uidExist);
                    } catch (RemoteException e) {
                        e.printStackTrace();
                    }
                }
            }
        });
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unBindAidl();
    }

    private void bindAidl() {
        Intent service = new Intent();
        service.setAction("com.example.aidl2.AidlService");
        bindService(service, mConn, Context.BIND_AUTO_CREATE);
    }

    private void unBindAidl() {
        if (mConn != null) {
            unbindService(mConn);
        }
        mService = null;
    }

    ServiceConnection mConn = new ServiceConnection() {
        
        @Override
        public void onServiceDisconnected(ComponentName name) {
        }
        
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            mService = IAidlBinder.Stub.asInterface(service);
        }
    };
}

调用者要想调用服务里面的方法，必须要保证aidl文件同远程服务里面的一样（包名也要和远程服务中aidl所在的包名相同）。