何时确切地从BroadcastReceiver调用onReceive？

Question

I know that onReceive from BroadcastReceiver is called on the main thread (UI). Does it mean that my all methods like onStart , onDestroy , onClick() etc have to be finished before onReceive will be called? Or can onReceive be called while I'm for example in the middle of onStart method, like this:

@Override
protected void onStart() {
        if (networkChangeReceiver != null) {
            IntentFilter intentFilter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
            context.registerReceiver(networkChangeReceiver, intentFilter);
        }
        method1();
        //here connection changes -> can onReceive be called here?
        method2();
        method3();
        (...)

}

Answer 1

Even if onReceive it's called in UI thread don't expect it to appear only after you finish your stuff in onStart/onCreate or whatever. The broadcast can receive at anytime, most likely somewhere in between or your logic, so your assumtion is correct: can be called right in the middle of your code from onStart() for example.