tabbarcontroller

问题 I'm developing an iOS app and now I'm at a loss. I'm trying to pass data from the first View Controller to the first tab of a TabBarViewController (with using the storyboard). I found a lot of tutorials that explain how to pass data between view controllers, but nothing worked with my tab bar. I know that the tab bar controller contains a kind of array of views. The relation between the View Controller and the Tab Bar Controller is realized using a segue (push). So, I thought it is easy to

问题 I'm developing an iOS app and now I'm at a loss. I'm trying to pass data from the first View Controller to the first tab of a TabBarViewController (with using the storyboard). I found a lot of tutorials that explain how to pass data between view controllers, but nothing worked with my tab bar. I know that the tab bar controller contains a kind of array of views. The relation between the View Controller and the Tab Bar Controller is realized using a segue (push). So, I thought it is easy to

问题 Let me explain clearly. I have a tabbarcontoller in the viewcontroller which is the main view controller of the single view application project. I added a tabbarcontroller to the viewcontroller as the subview. In the tabbarcontroller, I added two navigation controllers like below image, I have added three(named First, Second, Third) more viewcontrollers as new file. If I navigate from one viewcontroller to other in a tab using below, third = [[Third alloc] initWithNibName:@"Third" bundle:

问题 On a TabBar-based application on the iPad, is there a way to present a modal on top of it in "FullScreen"? I have a LANDSCAPE ONLY APP (if that makes a difference) and the item I want to currently present modally I would like to present full screen, filling the entire screen just to clarify. I can present it in "PageSheet" fine, and "FormSheet" is all right, after a few button adjustments on the modal view nib, but once I try "FullScreen", the background goes white (TabBar still there, though

问题 On a TabBar-based application on the iPad, is there a way to present a modal on top of it in "FullScreen"? I have a LANDSCAPE ONLY APP (if that makes a difference) and the item I want to currently present modally I would like to present full screen, filling the entire screen just to clarify. I can present it in "PageSheet" fine, and "FormSheet" is all right, after a few button adjustments on the modal view nib, but once I try "FullScreen", the background goes white (TabBar still there, though

问题 I have a tab bar controller managing 4 tabs. I have subclassed the tab bar controller so that the shouldAutorotateToInterfaceOrientation: method only allows a specific view controller in one of the tabs to rotate. Everything works almost fine: the controllers in the remaining tabs do not rotate. However, when the view controller which is allowed to rotate actually rotates, if the user taps one of the remaining tabs, the corresponding view controller also appear rotated (even though its

问题 I have a tab bar controller managing 4 tabs. I have subclassed the tab bar controller so that the shouldAutorotateToInterfaceOrientation: method only allows a specific view controller in one of the tabs to rotate. Everything works almost fine: the controllers in the remaining tabs do not rotate. However, when the view controller which is allowed to rotate actually rotates, if the user taps one of the remaining tabs, the corresponding view controller also appear rotated (even though its

问题 I'm pretty new in iphone programming and have stumbled upon this issue which I guess should be pretty basic stuff. I am using a tab bar application created from a template in XCode IOS 5.1. It works fine and creates 3 screens in the storyboard (tab bar controller + + 2 descended views) but when I try adding a top bar to these 2 views there is a problem... I do this by adding the top navigation bar in interface builder from object inspector for the tab bar controller. After ticking this option

问题 I got a TabBarController as initial scene; every tab uses basically the same information. This information is only available at runtime and is retrieved via json. The information will not be altered by my app but may be altered on the other side and could vary the next time i would refresh it. Is this a valid case for a singleton? I thought about loading the information before the TabBarController gets created and pass it on to its tabs, but I am confronted with several downsides now: (with a