Bail out of manipulating the frame in response to keyboard notifications if the view is not currently being displayed.

Jeff Arena · Jeff Arena · commit 311a36b70897 · 2012-09-20T17:51:11.000-04:00
diff --git a/Code/RKKeyboardScroller.m b/Code/RKKeyboardScroller.m
@@ -73,6 +73,8 @@ - (void)dealloc
 
 - (void)handleKeyboardNotification:(NSNotification *)notification
 {
+    if (!self.viewController.isViewLoaded || self.viewController.view.window == nil) return;
+
     NSDictionary *userInfo = [notification userInfo];
 
     CGRect keyboardEndFrame = [[userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];

Original file line number	Diff line number	Diff line change
`@@ -73,6 +73,8 @@ - (void)dealloc`
`73`	`73`
`74`	`74`	`- (void)handleKeyboardNotification:(NSNotification *)notification`
`75`	`75`	`{`
	`76`	`+ if (!self.viewController.isViewLoaded \|\| self.viewController.view.window == nil) return;`
	`77`	`+`
`76`	`78`	`NSDictionary *userInfo = [notification userInfo];`
`77`	`79`
`78`	`80`	`CGRect keyboardEndFrame = [[userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];`