#uibarbuttonitem

How to: Setting action for back button in navigation controller

Setting action for back button in navigation controller

I’m trying to overwrite the default action of the back button in a navigation controller. I’ve provided a target an action on the custom button. The odd thing is when assigning it though the backbutton attribute it doesn’t pay attention to them and it just pops the current view and goes back to the root:

UIBarButtonItem *backButton =…

Change position of a UIButton (like a UIBarButtonItem) in a UINavigationBar is simple. So, you can change the margin of the navigationItem button, using the imageEdgeInsets property. Be carefull... margin values are different in iOS6 and iOS7.

float v = [[[UIDevice currentDevice] systemVersion] floatValue]; if(v>=7) { //for iOS7 UIButton *btnLeft = (UIButton *)self.navigationItem.leftBarButtonItem.customView; btnLeft.imageEdgeInsets = UIEdgeInsetsMake(0, -16, 0, 16); } else { //for iOS6 UIButton *btnLeft = (UIButton *)self.navigationItem.leftBarButtonItem.customView; btnLeft.imageEdgeInsets = UIEdgeInsetsMake(0, -5, 0, 5); }

This is a good library to use when adding badges to UIBarButtonItem that is compatible with iOS 7.

https://github.com/TanguyAladenise/BBBadgeBarButtonItem

iOS 6 and below can just use the popular MKNumberBadgeView library

RubymotionでButtonを実装。

ナビにおけるボタンとタブボタン、あとツールバーのボタンとか。

ソースはgithub参照　https://github.com/grazios/Buttons

This is how I managed to enable and disable my back and next buttons on my UIWebView:

http://stackoverflow.com/questions/2317727/disable-back-and-forward-button-on-uitoolbar-in-uiwebview

This is how you change the text in the back button when using a UINavigationController. The answer by rein worked.

Today I ran into a problem. In my app I need to have an UITableView that is accessed from another UITableView using UINavigationBar. Therefore, when you're in the second TableView, the right NavigationBar item is that button that allows you to go back to the first TableView. But I need to have at the "+" (add) button and "Edit" button for this TableView as well. So what? Luckily I found I way how to do it.

You need to create a new instance of a UIToolBar and fill it with buttons you need, that add them to your UINavigationBar. However, always remember that this does not look nice at all! UINavigationBar is not designed to do this but if you are in a situation like me and you really just need to have two buttons on one side of a NavigationBar here is a snippet that should help you.

    // Create the toobar     UIToolbar* toolbar = [[UIToolbar alloc]                           initWithFrame:CGRectMake(0, 0, 100, 45)];     [toolbar setBarStyle: UIBarStyleDefault];      // Create and array for the buttons     NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:3];     // Create a "+" button     UIBarButtonItem *addButton = [[UIBarButtonItem alloc]                                    initWithBarButtonSystemItem:UIBarButtonSystemItemAdd                                    target:self                                    action:@selector(addAction:)];     addButton.style = UIBarButtonItemStyleBordered;     [buttons addObject:addButton];     [addButton release];     // Create a spacer between them     UIBarButtonItem *spacer = [[UIBarButtonItem alloc]                                initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace                                target:nil                                action:nil];     [buttons addObject:spacer];     [spacer release];     // Create an "Edit" button     UIBarButtonItem *editButton = [[UIBarButtonItem alloc]                                      initWithBarButtonSystemItem:UIBarButtonSystemItemEdit                                      target:self                                      action:@selector(editAction:)];     editButton.style = UIBarButtonItemStyleBordered;     [buttons addObject:editButton];     [editButton release];     // Add the buttons to the toolbar and release them     [toolbar setItems:buttons animated:NO];     [buttons release];       // Add the toolbar to the NavigationBar     self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]                                      initWithCustomView:toolbar];     [toolbar release];

Here is a screenshot of the result.