I was wondering if there is a way to run some Javascript code at midnight if the app is in background/foreground state and I found out there are some npm packages out there for React Native that lets you schedule background jobs that are executed at a set interval, but that wasn't what I was looking for so I decided to use the Headless Js API from React Native, but I couldn't get it to execute. I tried creating the service:
package com.backgroundspecificjob;import android.content.Intent;import android.os.Bundle;import com.facebook.react.HeadlessJsTaskService;import com.facebook.react.bridge.Arguments;import com.facebook.react.jstasks.HeadlessJsTaskConfig;import javax.annotation.Nullable;public class MidnightTask extends HeadlessJsTaskService { @Override protected @Nullable HeadlessJsTaskConfig getTaskConfig(Intent intent) { Bundle extras = intent.getExtras(); if(extras != null) { return new HeadlessJsTaskConfig("MidnightTask", Arguments.fromBundle(extras), 5000 ); } return null; }}then setting up a receiver:
package com.backgroundspecificjob;import android.app.ActivityManager;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;;import com.facebook.react.HeadlessJsTaskService;import java.util.List;public class MidnightReceiver extends BroadcastReceiver { @Override public void onReceive(final Context context, final Intent intent) { final String action = intent.getAction(); if(!isAppOnForeground(context) && Intent.ACTION_DATE_CHANGED.equals(action)) { Intent serviceIntent = new Intent(context, MidnightTask.class); serviceIntent.putExtra("midnight", true); context.startService(serviceIntent); HeadlessJsTaskService.acquireWakeLockNow(context); } } private boolean isAppOnForeground(Context context) { ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); List<ActivityManager.RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses(); if (appProcesses == null) { return false; } final String packageName = context.getPackageName(); for (ActivityManager.RunningAppProcessInfo appProcess : appProcesses) { if (appProcess.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND && appProcess.processName.equals(packageName)) { return true; } } return false; }}and at last setting an intent as well as the service in Androidmanifest.xml:
<service android:name=".MidnightTask" android:enabled="true" android:exported="true"/><receiver android:name=".MidnightReceiver" android:enabled="true" android:exported="true"><intent-filter><action android:name="android.intent.action.DATE_CHANGED" /></intent-filter></receiver>But it seems that if I change the date to 23:59 and then wait for it to be 00:00 the intent is not triggered and furthermore the service is not called. I also registered the headless task in AppRegistry:
AppRegistry.registerHeadlessTask('MidnightTask', () => require('./onMidnightClear'),);I can't get the code to work and I don't quite understand why this is not working. If anyone knows the solution to my problem please let me know :)
