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ios
Why is there extra padding at the top of my UITableView with style UITableViewStyleGrouped in iOS7
I was helped by the following: YouStoryboard.storyboard > YouViewController > Attributes inspector > Uncheck – Adjust scroll view insets.
Xcode building for iOS Simulator, but linking in an object file built for iOS, for architecture ‘arm64’
Basically, you have to exclude arm64 for the simulator architecture, both from your project and the Pod project. To do that, navigate to Build Settings of your project and add Any iOS Simulator SDK with value arm64 inside Excluded Architecture. OR If you are using custom XCConfig files, you can simply add this line for … Read more
Placeholder in UITextView
I made a few minor modifications to bcd’s solution to allow for initialization from a Xib file, text wrapping, and to maintain background color. Hopefully it will save others the trouble. UIPlaceHolderTextView.h: #import <Foundation/Foundation.h> IB_DESIGNABLE @interface UIPlaceHolderTextView : UITextView @property (nonatomic, retain) IBInspectable NSString *placeholder; @property (nonatomic, retain) IBInspectable UIColor *placeholderColor; -(void)textChanged:(NSNotification*)notification; @end UIPlaceHolderTextView.m: #import … Read more
How to link to apps on the app store
Edited on 2016-02-02 Starting from iOS 6 SKStoreProductViewController class was introduced. You can link an app without leaving your app. Code snippet in Swift 3.x/2.x and Objective-C is here. A SKStoreProductViewController object presents a store that allows the user to purchase other media from the App Store. For example, your app might display the store … Read more
Hide strange unwanted Xcode logs
Try this: 1 – From Xcode menu open: Product > Scheme > Edit Scheme 2 – On your Environment Variables set OS_ACTIVITY_MODE = disable
Eliminate extra separators below UITableView
Interface builder (iOS 9+) Just drag a UIView to the table. In storyboard, it will sit at the top below your custom cells. You may prefer to name it “footer”. Here it is shown in green for clarity, you’d probably want clear color. Note that by adjusting the height, you can affect how the “bottom … Read more
How do I create delegates in Objective-C?
An Objective-C delegate is an object that has been assigned to the delegate property another object. To create one, you define a class that implements the delegate methods you’re interested in, and mark that class as implementing the delegate protocol. For example, suppose you have a UIWebView. If you’d like to implement its delegate’s webViewDidStartLoad: … Read more
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
I think you’re looking for dispatch_after(). It requires your block to accept no parameters, but you can just let the block capture those variables from your local scope instead. int parameter1 = 12; float parameter2 = 144.1; // Delay execution of my block for 10 seconds. dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 10 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{ NSLog(@”parameter1: %d parameter2: … Read more
Xcode 6: Keyboard does not show up in simulator
I had the same issue. My solution was as follows: iOS Simulator -> Hardware -> Keyboard Uncheck “Connect Hardware Keyboard” Mine was checked because I was using my mac keyboard, but if you make sure it is unchecked the iPhone keyboard will always come up.