Question

来自Expo＆Forum的论坛交叉发布：

我一直在尝试让Headless JS任务在一个独立的ExpoKit项目（SDK25）上执行时遇到问题。我已经使用React Native文档来执行此操作。

我有一个广播接收器

public class MessageReceivedReceiver extends BroadcastReceiver {
    private static final String TAG = "MessageReceivedReceiver";
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.i(TAG, "onReceive");
        if (!isAppOnForeground((context))) {
            Log.i(TAG, "Not in foreground");
            /**
             We will start our service and send extra info about
             network connections
             **/
            Intent serviceIntent = new Intent(context, JSBackgroundService.class);
            serviceIntent.putExtras(intent.getExtras());
            context.startService(serviceIntent);
            HeadlessJsTaskService.acquireWakeLockNow(context);
        }
    }
...

HeadlessJS任务服务：

public class JSBackgroundService extends HeadlessJsTaskService {
    final static String TAG = "JSBackgroundService";
    @Override
    protected @Nullable
    HeadlessJsTaskConfig getTaskConfig(Intent intent) {
        Bundle extras = intent.getExtras();
        Log.i(TAG, String.format("getTaskConfig: %s", extras));
        if (extras != null) {
            return new HeadlessJsTaskConfig(
                    "Test",
                    Arguments.fromBundle(extras),
                    5000, // timeout for the task
                    false // optional: defines whether or not  the task is allowed in foreground. Default is false
            );
        }
        return null;
    }
}

我的MainApplication实现了ReactApplication：

public class MainApplication extends ExpoApplication implements ReactApplication {

private static final String TAG = MainApplication.class.getSimpleName();

private List<ReactPackage> packages = Arrays.<ReactPackage>asList(
// new MainReactPackage(),
    new MyReactPackage()
    );

    private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
        @Override
        public boolean getUseDeveloperSupport() {
            return BuildConfig.DEBUG;
        }

        @Override
        protected List<ReactPackage> getPackages() {
            return packages;
        }
    };
    @Override
    public ReactNativeHost getReactNativeHost() {
    return mReactNativeHost;
    }
    …

在App.js中我有：

…
import JSBackgroundService from ‘./services/jsbackgroundservice’;
AppRegistry.registerHeadlessTask(‘Test’, () => {console.log(“Got it”); return JSBackgroundService; });

export default class App extends React.Component {
…

和JsBackgroundService：

module.exports = async (e) => {
    // do stuff
    console.log("Running the background service");
    console.log(e);
  };

基于日志我知道getTaskConfig已执行但由于某种原因，我在控制台日志中看不到任何内容，看起来javascript永远不会被执行。我已经尝试在前台运行Headless JS以进行测试，但无济于事。

有没有人有任何想法我可能做错了什么？

感谢任何帮助：）

独立的ExpoKit和Headless JS

0 个答案: