There is only one difference between BroadcastReceiver and WakefulBroadcastReceiver. When you receive the broadcast inside onReceive() method, Suppose, BroadcastReceiver : It is not guaranteed that CPU will stay awake if you initiate some long running process. CPU may go immediately back to sleep. WakefulBroadcastReceiver : It is guaranteed that CPU will stay awake until you … Read more
For example you can find any textView: TextView textView = (TextView) ((Activity) context).findViewById(R.id.textView1);
You can use the shared preference to store a Boolean value for isAutoStartEnabled, and check this value in the BroadcastReciver, fire an intent only if it’s true. In your case, the problem is not whether you receive the broadcast but who receives the broadcast. Best of luck.. I hope it helps..
I tested this on a Samsung Galaxy S5 with Android 4.4.2. So what is important and what is not mentioned in other posts: Register the receiver in the AndroidManifest.xml inside the application tag but outside from every activity tag. Your receiver Broadcastreceiver need to be public and static One activity need to register an MediaButtonEventReceiver … Read more
A BroadcastReceiver can be used in many ways but when it comes to something as specific as updating the UI components of an Activity, there is little advantage to declaring / defining a BroadcastReceiver in it’s own Java class file. Reasoning – the BroadcastReceiver has to have some prior “knowledge” of the Activity and what … Read more
This is not how you should register a receiver. You receiver stops working, because you construct it in onCreate, which means it will live as long as your app is alive. When the app gets destroyed, you also lose the the receiver. If you register receiver inside an activity, you should always register it in … Read more
The build process runs the tool aapt to automatically create the configuration file bin/proguard.txt, based on AndroidManifest.xml and other xml files. The build process then passes the configuration file to ProGuard. So ProGuard itself indeed doesn’t consider AndroidManifest.xml, but aapt+ProGuard do.
Make sure that you have an activity in your app, and that the user runs this activity before attempting to press that button. Until then, your <receiver> will not receive any broadcasts. UPDATE On Android 4.0 and higher, it appears that you also need to call registerMediaButtonEventReceiver() on AudioManager in order to receive the events. … Read more
You can call the receiver from your activity. If you don’t want to add the logic of the receiver in you activity you can use an abstract receiver. You abstract receiver: public abstract class SmsReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { //Add you receiver logic here … … onNewPosition(); } … Read more
Android 10’s restriction on background activity starts was announced about six months ago. You can read more about it in the documentation. Use a high-priority notification, with an associated full-screen Intent, instead. See the documentation. This sample app demonstrates this, by using WorkManager to trigger a background event needing to alert the user. There, I … Read more