NFC禁用/启用前台调度

Question

can we disable/enable foreground dispatching at will. onresume/onpause will help us enable and disable when the activity comes back to focus and out of focus respectively.

is there a possibility to enable and then disable the foreground dispatching.

even tried to use IntentFilter writeTagFilters2[]= new IntentFilter[] { }; adapter.enableForegroundDispatch(this, pendingIntent, writeTagFilters2, null);

to give no intents to react

but it gives an error saying

Foreground dispatch can only be enabled when your activity is resumed.

Answer 1

I believe you should be using disableForegroundDispatch(Activity) in order to remove the registration for the callback.

From the documentation for enableForegroundDispatch :

This method must be called from the main thread, and only when the activity is in the foreground (resumed). Also, activities must call disableForegroundDispatch(Activity) before the completion of their onPause() callback to disable foreground dispatch after it has been enabled.

So provided your enable and disable calls reside between the onResume() and onPause() callbacks in the activity lifecycle , you can call them whenever.

Regarding your error, that code must be outside of the resume/pause events. Is it in your onCreate() method by any chance?