Check self permission with ReactApplicationContext as Activity is unavailable when the app is in the state Quit

Author: Nikita Luksha

android/src/main/java/io/wazo/callkeep/RNCallKeepModule.java

@@ -965,15 +965,11 @@ private String getApplicationName(Context appContext) {
     }
 
     private Boolean hasPermissions() {
-        Activity currentActivity = this.getCurrentReactActivity();
-
-        if (currentActivity == null) {
-            return false;
-        }
+        ReactApplicationContext context = getContext();
 
         boolean hasPermissions = true;
         for (String permission : permissions) {
-            int permissionCheck = ContextCompat.checkSelfPermission(currentActivity, permission);
+            int permissionCheck = ContextCompat.checkSelfPermission(context, permission);
             if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
                 hasPermissions = false;
             }