Getting A Boolean Value From Activity In Fragment

Question

It's weird this question hasn't been asked yet.

I need to check phone storage in my activity and get the returned value in my fragment

/*MainActivity*/
boolean hasLowStorage(){
    IntentFilter lowStorageFilter = new IntentFilter(Intent.ACTION_DEVICE_STORAGE_LOW);
    return registerReceiver(null, lowStorageFilter) != null;
}

When calling a void method from an activity, we do this:

 /*fragment*/
((MainActivity) getActivity()).yourMethod();

How do we call for the value in the boolean case from the fragment?

Answer 1

Change scope of method to public and try again.

// MainActivity

public boolean hasLowStorage(){
        IntentFilter lowStorageFilter = new IntentFilter(Intent.ACTION_DEVICE_STORAGE_LOW);
        return registerReceiver(null, lowStorageFilter) != null;
    }

//Fragment

    boolean bolValue = ((MainActivity) getActivity()).hasLowStorage();

Answer 2

尝试这个：

boolean yourValue = ((MainActivity) getActivity()).hasLowStorage();

Answer 3

Make it public static like this

 /*MainActivity*/
 public static boolean hasLowStorage(){
 IntentFilter lowStorageFilter = new 
 IntentFilter(Intent.ACTION_DEVICE_STORAGE_LOW);
 return registerReceiver(null, lowStorageFilter) != null;
 }

And call it like

 boolean yourValue = 
 MainActivity.hasLowStorage();

Happy coding :)