CODEWITHSUNDEEP
javaandroidconcurrencysynchronization
Toan Le
Toan Le

Reputation: 411

How to wait for the service to load before starting the activity

The Service class will load a library and it takes about 4-5 seconds for the library to become ready. What is the best way to make MainActivity to keep checking on the status of a static boolean in Service class and do something when it's ready? I looked around and knew that using busy wait loop is bad.

The outline of my planned MainActivity is

onCreate - start the service

onResume - show the splash screen until a specific boolean in Service become true then switch to another fragment

Upvotes: 2

Views: 491

Answers (2)

Quick learner
Quick learner

Reputation: 11467

Simple solution is Broadcast Reciever Try this

BroadcastReceiver broadCastNewMessage = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            // do your stuff here

        }
    };

Now in onCreate() register this

registerReceiver(this.broadCastNewMessage, new IntentFilter("bcNewMessage"));

And in onDestroy()

unregisterReceiver(broadCastNewMessage);

Now Call this method from the service class where u want to update the activity

sendBroadcast(new Intent().setAction("bcNewMessage"));

Upvotes: 1

Nerdy Bunz
Nerdy Bunz

Reputation: 7437

You could use a broadcast receiver from the Service to your MainActivity which triggers a method inside the MainActivity... instead of constantly checking a static bool in the service.

But you want to be very sure to handle cases where it never loads for whatever reason, otherwise users will be staring at a splash screen forever.

Upvotes: 3

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