java - bindservice 不会启动服务并且 onserviceconnect 不会调用

Question

我正在尝试构建并运行一个用于 react native 应用程序的服务，在该服务运行后，我需要调用一些服务方法，这意味着我需要获取正在运行的服务的实例，所以我正在尝试使用bindservice()。

问题是当我调用bindservice()时，onServiceConnected()和onStartCommand()不会启动，另一方面服务中的onBind()正在启动。

我尝试过的所有答案都没有帮助，这是其中的一部分:

ServiceConnection.onServiceConnected() never called after binding to started service onServiceConnected never called after bindService method ServiceConnection::onServiceConnected not called even though Context::bindService returns true? OnServiceConnected not getting called

提前致谢。

<小时/>

这是服务:

public class TestService extends Service {
    private LocalBinder mBinder = new LocalBinder();
    private Intent serviceIntent;

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    super.onStartCommand(intent, flags, startId);
    Log.i("service", "service starting!!@!@!@ ");

    return START_STICKY;
}

@Override
public void onDestroy() {
    super.onDestroy();
    Log.i("EXIT", "ondestroy!");
    Intent broadcastIntent = new Intent("com.testapp.service.RestartTest");
    sendBroadcast(broadcastIntent);
}

@Override
public void onTaskRemoved(Intent rootIntent) {
    Intent broadcastIntent = new Intent("com.testapp.service.RestartTest");
    sendBroadcast(broadcastIntent);
    super.onTaskRemoved(rootIntent);
}

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

public class LocalBinder extends Binder {
    TesService getService() {
        return TestService.this;
    }
}

}

react native 的包:

public class TestPackage implements ReactPackage {

private ReactApplicationContext applicationContext;
TestService runningService;
boolean mBound = false;

@Override
public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
    return Collections.emptyList();
}

@Override
public List<NativeModule> createNativeModules(
        ReactApplicationContext reactContext) {
    List<NativeModule> modules = new ArrayList<>();
    runningService = new TestService(reactContext);
    Intent serviceIntent = new Intent(reactContext, runningService.getClass());
    reactContext.bindService(serviceIntent, mConnection, Context.BIND_AUTO_CREATE);
    modules.add(runningService.someMoudle());
    return modules;
}

/** Defines callbacks for service binding, passed to bindService() */
private ServiceConnection mConnection = new ServiceConnection() {

    @Override
    public void onServiceConnected(ComponentName className,
            IBinder service) {
runningService = ((LocalBinder) service).getService();
        mBound = true;
    }

    @Override
    public void onServiceDisconnected(ComponentName arg0) {
        mBound = false;
    }
};
}

AndroidManifest.xml 包含

<service
    android:name=".TestService">
</service>

Answer 1

API.java

public class Api extends ReactContextBaseJavaModule {
     public KeyStoreApi(ReactApplicationContext reactContext){
        super(reactContext);
    }

    ....

    @ReactMethod
    public void connect(Promise promise){

        ServiceConnection mServiceConnection = new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
                ...
            }

            @Override
            public void onServiceDisconnected(ComponentName name) {
                ...
            }
        };

        Intent intent = new Intent();
        intent.setAction(...);
        intent.setClassName(...);
        getReactApplicationContext().bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);

    }
}

ApiPackage.java

public class KeyStoreApiPackage implements ReactPackage {

    @Override
    public List<ViewManager> createViewManagers(ReactApplicationContext reactContext){
        return Collections.emptyList();
    }

    @Override
    public List<NativeModule> createNativeModules(ReactApplicationContext reactContext){
        List<NativeModule> modules = new ArrayList<>();
        modules.add(new Api(reactContext));
        return modules;
    }
}

我也遇到了同样的问题，然后我发现了你的问题。所以，我想分享我的解决方案。这对我来说很有用。

尽管如此，对你来说已经很晚了，我想帮助别人。