download file and ask for permissions to write into storage

app/src/main/java/org/mian/gitnex/helpers/Toasty.java

@@ -28,4 +28,19 @@ public class Toasty {
 
     }
 
+    public static void error(Context context, String message) {
+
+        LayoutInflater inflater = LayoutInflater.from(context);
+        View view = inflater.inflate( context.getResources().getLayout(R.layout.custom_toast_error), null );
+
+        TextView text = view.findViewById(R.id.toastText);
+        text.setText(message);
+
+        Toast toast = new Toast(context);
+        toast.setDuration(Toast.LENGTH_LONG);
+        toast.setView(view);
+        toast.show();
+
+    }
+
 }