iPhone/iPad UIButton TitleLabel text not appearing
I think you want setTitle: forState: [button setTitle:@”Baha’i” forState:UIControlStateNormal]
cocoa-touch
NSFileHandle fileHandleForWritingAtPath: return null!
fileHandleForWritingAtPath is not a “creation” call. The documentation explicitly states: “Return Value: The initialized file handle, or nil if no file exists at path” (emphasis added). If you wish to create the file if it does not exist, you’d have to use something like this: NSFileHandle *output = [NSFileHandle fileHandleForWritingAtPath:self.finalPath]; if(output == nil) { [[NSFileManager … Read more
How to detect microphone input permission refused in iOS 7
If you are still compiling with iOS SDK 6.0 (as I am) you have to be a bit more indirect than @Luis E. Prado, as the requestRecordPermission method doesn’t exist. Here’s how I did it. Remove the autorelease bit if you’re using ARC. On iOS6 nothing happens, and on iOS7 either the ‘microphone is enabled’ … Read more
How to go back one view in UINavigationController?
I don’t mean to be rude, but this is really well documented. A google search or even an Apple documentation search on UINavigationController will turn up exactly what you need. To programmatically pop the current view controller you use: [[self navigationController] popViewControllerAnimated:YES]; To pop to a specific view controller, you use: [[self navigationController] popToViewController:controller animated:YES]; … Read more
How can I give WKWebView a colored background
To stop ‘white flash’ on your dark background, do this webView.opaque = false This doesn’t really solve background colour issue, but at least it stops ‘white flash’ you are experiencing. Apparently there seem to be no way to change background colour of WKWebView before loading HTML on it. Swift 4 webView.isOpaque = false
Non-English default language for iOS App?
Defaulting to a particular language is not what you should strive for. Suppose a japanese user living in France and fluently speaking French has his phone set to Japanese. Your App would default to German, despite it having a French translation; I guess that’s not what you want and it’s certainly not what the user … Read more
How can you add a UIGestureRecognizer to a UIBarButtonItem as in the common undo/redo UIPopoverController scheme on iPad apps?
Note: this no longer works as of iOS 11 In lieu of that mess with trying to find the UIBarButtonItem’s view in the toolbar’s subview list, you can also try this, once the item is added to the toolbar: [barButtonItem valueForKey:@”view”]; This uses the Key-Value Coding framework to access the UIBarButtonItem’s private _view variable, where … Read more
What is the “Mode” property in Interface Builder which offers “Scale to fill”, “Aspect fit” etc.?
The content mode property of a view tells how its content should be laid out. In the Interface Builder, the various modes can be selected in the Attributes Inspector. Let’s use two image views to see how the various modes work. Scale to Fill The image heights and widths are stretched to match the size … Read more
Is it necessary to use weak references to self always inside blocks..?
You should only use a weak reference to self, if self will hold on to a reference of the block. In your example, you are not keeping a reference to your block in self, you are only using blocks inline with the UIView animateWithDuration:, and as such there is no need to use __weak myViewController … Read more
UITableViewHeaderFooterView in InterfaceBuilder
It’s absolutely possible and Apple provides an example here. Download the sample code and look at the SectionHeaderView.xib. The way to do it is to create a xib with a single UIView on it. Then, set the class type to a class that inherits from UITableViewHeaderFooterView. Once you have a nib with a class that … Read more