I'm trying to learn objective-c by making a GUI application using Xcode 3. I'm wondering if it is possible to change the text of a button outside of a tab view depending on which tab in the tabview is selected? As I said I am trying to learn objective-c so please act as though I know next to nothing in your answer. I should probably mention that I tried making a NSObject and tried to define an IBAction in a .h and .m file but that didn't seem to work. (I have tried setting some breakpoints in those files none of which were ever reached leading me to think something isn't wired the way think it is.)
Sorry for the long winded explanation.
Thanks for all the help!
I actually figured it out. What I needed was object delegation, this page, and of course Google to help get the correct syntax for the actual implementation.
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Generally, when editing text in a text field/input/area/editor, pressing ⌘A will select all of the current text in said field/input/area/editor. I've subclassed NSTextField and NSTextFieldCell, and no matter what I try, I can't seem to get basic "Select All" functionality working. I've tried implementing delegate protocols, intercepting events, manipulating commands made by selectors, and every other thing I can think of. What gives? (I can already hear the "Ever heard of Google?" refrains because of how simple this probably is, but I haven't found a single answer out there. I guess I can thank iOS for that.)
And before I forget to mention it, I also dragged a standard NSTextField into my nib to see if a non-subclassed NSTextField implements Select All behavior by default, and to my shock, it doesn't. Am I going crazy here, or am I completely overlooking something? Isn't Select All almost a requirement when implementing a text field? Apple's First Responder proxy handles everything under the sun (including two versions of selectAll (selectAll and selectAll:), but the n00b is strong with me, and I can't seem to make sense of any of this.
Any help/ideas would be immensely appreciated. Cheers!
The application menu handles sending the keyboard shortcut actions to the application's current first responder. The missing connection would explain why your regular NSTextField objects are missing this functionality as well.
I have implemented the JTRevelSideBar into my project, and it's working quite well, but I have been trying to figure out if it was possible to do something like with the Facebook app, where if the user presses the main viewcontroller, while the sidebar is revealed, the sidebar should be dismissed. Do anybody know this is possible to implement?
Never having used it before, I will say: probably.
Though, the github page for the pod you mention says that it's no longer being supported due to its use being discouraged at the WWDC14. Though, one of the alternatives that JT mentions is PKRevealController2 and seems to be fairly simple to use.
Though the reason I bring it up at all is that usually devs will give you some hint as to how to do what you are asking for in one of the project's main header files. For example in PKRevealController.h it lists the property
/// Whether to use the front view's entire visible area to allow pan based reveal.
#property (nonatomic, assign, readwrite) BOOL recognizesPanningOnFrontView;
Which is exactly what you'd want to set as YES in your project. I would recommend to take a look at the header files in the JTRevealSideBar pod to see if there is something similar.
Now, I have used MMDrawerController before (it's pretty great!) and similarly it has a MMCloseDrawerGestureMode which can be set to MMCloseDrawerGestureModeBezelPanningCenterView (The user can close the drawer by starting a pan anywhere within the bezel of the center view.)
So you see, you'll just have to do a little digging. Otherwise you'll need to implement a pan gesture recognizer... but I can't really say for sure where you'll be putting it in your particular implementation.
I'm looking for a simple way of adding a refresh mechanism to my UIWebView. I've seen posts about the EGO pull to refresh but, to be honest, I don't understand how that works, especially since I have no clue on how to use it with a UIWebView instead of a table view. And it seems to me like a lot of overhead for just a simple refresh.
I thought about adding a navbar but instead of a back button, add a custom "refresh" one. But based on what I've found so far, it seems as complicated as the other solution.
So, basically, I'd like to know what you would do. Keep in mind that the only requirement is that the user have some easy way of refreshing the view. Any suggestion ?
*I'm a begginer in Objective-C so that is why I don't understand how to plug the EGO framework with a UIWebView even after downloading and running the code.
Well,
Create a button and inside button's IBAction,
- (IBAction) performReload:(id) sender {
[self.uiwebview reload];
}
Check the documentation, it will help you a lot at your beginning stage.
Visual Suggestion:
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIWebView_Class/Reference/Reference.html
I'm learning Objective-c and made a little practice app to take input from an NSSlider and set the level to it. However, I would like to know if there is any way to make the level indicator update with the dragging of the slider. Currently, it only updates when I let go of the slider. I saw a couple of references to a setContinuous method, but it didn't seem to do anything. If that method is completely unrelated, please constrain your laughter. Also, it would be awesome if you could add code snippets to show me where to put the method.
-setContinuous: should do the trick, if you're sending it to the right object. Or, if you've set up your interface in a .xib file, check the 'continuous' box (I don't remember the actual label) for the slider.
I have a class that contains several textfields. I need to know when one is done being edited and send the new information to one of my other objects.
This question seemed similar but in Objective C? The buttons should be visible when the user is done entering the value in the textfield
Objective-j doesn't have the same functions.
Browsing the documentation I found several functions that seemed like they might be able to help such as, textDidEndEditing but didn't understand how to use it. There are several more that sound related and I don't know what to use.
Summary: when the textfield is done being edited I need to perform another function. Also there are multiple textfields so I need to know which one is edited.
controlTextDidEndEditing is the delegate method you should implement. Or you can just set the target/action of the textfield