在 Android 中从 Native Java Activity 打开 React Native 组件

Question

如何从 Java 中的原生 Android Activity 打开我的 React Native 应用程序的特定组件？

这是我的用例：
我在我的 android 部分注册了一个通知接收器服务，一个 android 活动（命名为 Activity1）在动作中分配，当收到通知时立即打开（无论应用程序是打开还是关闭）。现在如何从 Activity(Activity1) 打开 React Native 组件？

Answer 1

我读到'Integration with Android Existing Apps Doc' 它是开放根组件（使用捆绑包），而不是特定组件。

我必须在屏幕关闭（锁定屏幕）时打开特定的反应原生 js 组件

**我使用expo framework。

   public class UnlockActivity extends ReactActivity implements DefaultHardwareBackBtnHandler {
    //static constants


    //
    private ReactRootView mReactRootView;
    private ReactInstanceManager mReactInstanceManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mReactRootView = new ReactRootView(this);
        mReactInstanceManager = ((MainApplication) getActivity().getApplication())
                .getReactNativeHost()
                .getReactInstanceManager();
        // The string here (e.g. "MyReactNativeApp") has to match
        // the string in AppRegistry.registerComponent() in index.js
        mReactRootView.startReactApplication(mReactInstanceManager, "LockScreen", null);

        setContentView(mReactRootView);
    }

接收者

public class LockScreenReceiver extends BroadcastReceiver {
//Member Variable
private TelephonyManager telephonyManager   =   null;
private boolean isPhoneIdle                 =   true;

private PhoneStateListener phoneListener    =   new PhoneStateListener()
{
    @Override
    public void onCallStateChanged(int state, String incomingNumber)
    { //Member Object
        switch(state){
            case TelephonyManager.CALL_STATE_IDLE :
                isPhoneIdle = true;
                break;
            case TelephonyManager.CALL_STATE_RINGING :
                isPhoneIdle = false;
                break;
            case TelephonyManager.CALL_STATE_OFFHOOK :
                isPhoneIdle = false;
                break;
        }
    }
};



//Construc

tor
    public LockScreenReceiver() {
    }



    //Override Method
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF))
        {
            if(telephonyManager == null)
            {
                telephonyManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
                telephonyManager.listen(phoneListener, PhoneStateListener.LISTEN_CALL_STATE);
            }


            if(isPhoneIdle)
            {
                Intent i = new Intent(context, UnlockActivity.class);
                i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(i);
            }


        }
    }
}