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Detect backspace in empty UITextField
...here any way to detect when the Backspace / Delete key is pressed in the iPhone keyboard on a UITextField that is empty? I want to know when Backspace is pressed only if the UITextField is empty.
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婚庆O2O：领跑的企业也就只走到B轮 - 资讯 - 清泛网 - 专注C/C++及内核技术
...家拿到了数百万天使轮，其他的则没什么动静了，不知道是否在过冬。
什么「你负责美，其他交给我」，都是骗人的
婚庆看起来很肥美，真要做起来，却很骨感，水深得很。
结婚筹备是一件很繁琐的事，每对新人都希望结婚...
第一个Hello,OS World操作系统 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...符串往后移动一个字节
CMP AL, 0 ;判断当前取出的ASCII是否是0,
JE _END ;JE：Equal则Jmp，等于零表示字符串显示完了，结束。
MOV AH, 0x0e ;调用系统10h中断显示ASCII字母，AH,BX指定显示模式及参数(详见：https://www.tsingfun.com/it/cpp/...
Dashed line border around UIView
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it's not a perfect way when talking about iPhone6 plus. The dotted line could become fuzzy.
– LiangWang
Jan 12 '15 at 14:31
1
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Expand/collapse section in UITableView in iOS
...play and try to close it -> NSInternalInconsistencyException (iOS 8.4 / iPhone 5s)
– Raimund Wege
Aug 21 '15 at 14:12
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NSInvalidUnarchiveOperationException: Could not instantiate class named NSLayoutConstraint
I am very new to this. I followed Apple's tutorial step by step for the iPhone project "HelloWorld". I ran it in the iPhone 5.0 simulator and it crashed:
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Presenting a UIAlertController properly on an iPad using iOS 8
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In Swift 2, you want to do something like this to properly show it on iPhone and iPad:
func confirmAndDelete(sender: AnyObject) {
guard let button = sender as? UIView else {
return
}
let alert = UIAlertController(title: NSLocalizedString("Delete Contact?", comment: ""), me...
How to capture UIView to UIImage without loss of quality on retina display
...ale factor of 1.0, so you're actually getting exactly the same image on an iPhone 4 as on the other iPhones. I'll bet either the iPhone 4 is applying a filter when you implicitly scale it up or just your brain is picking up on it being less sharp than everything around it.
So, I guess:
#import <...
iPhone - Grand Central Dispatch main thread
I have been using with success, grand central dispatch in my apps, but I was wondering what is the real advantage of using something like this:
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Sharing link on WhatsApp from mobile website (not application) for Android
...p</a>
Rechecked it today (17th April 2015):
Works for me on iOS 8 (iPhone 6, latest versions) Android 5 (Nexus 5, latest versions).
It also works on Windows Phone.
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