detach view in onPause of fragments

Author: biodunalfet

raveandroid/src/main/java/com/flutterwave/raveandroid/account/AccountFragment.java

@@ -397,6 +397,14 @@ public void onDisplayInternetBankingPage(String authurl, String flwRef) {
         bottomSheetBehaviorInternetBanking.setState(BottomSheetBehavior.STATE_EXPANDED);
     }
 
+    @Override
+    public void onPause() {
+        super.onPause();
+        if (presenter != null) {
+            presenter.onDetachView();
+        }
+    }
+
     @Override
     public void onChargeAccountFailed(String message, String responseAsJSONString) {
         showToast(message);

raveandroid/src/main/java/com/flutterwave/raveandroid/card/CardFragment.java

@@ -415,6 +415,19 @@ public void onPaymentError(String message) {
         Toast.makeText(getActivity(), message, Toast.LENGTH_LONG).show();
     }
 
+    @Override
+    public void onPause() {
+        super.onPause();
+        if (presenter != null) {
+            presenter.onDetachView();
+        }
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+    }
+
     /**
      *  Called when a pin suggested auth model is required.
      *  It shows a dialog that receives the pin and sends the payment payload