我cornerRadius在一个UIView和一个UIImageView内部相同UIView.我正在计算角落半径,RockProfileView.frame.size.height / 2但UIView在iOS 10中停止显示.
进一步检查后,我发现值为RockProfileView.frame.size.height / 21000.0,宽度和高度约束设置为64.0
当我硬编码RockProfileView.layer.cornerRadius = 32到64/2它工作得很好.
可能是什么问题 ?
完整代码:
RockProfileView.layer.cornerRadius = RockProfileView.frame.size.height / 2
RockProfileView.clipsToBounds = true
RockProgressView.layer.masksToBounds = true
Run Code Online (Sandbox Code Playgroud) 我试图从JSON数组中获取值,我收到错误"Cast from'XCUIElement!' 无关的字符串总是失败."
我在iOS 9.1中使用Xcode 7.
我的代码如下:
let url = NSURL(string: urlAsString)!
let urlSession = NSURLSession.sharedSession()
let jsonQuery = urlSession.dataTaskWithURL(url, completionHandler: { data, response, error -> Void in
if (error != nil) {
print(error!.localizedDescription)
}
do {
let jsonResult = (try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers)) as! NSMutableArray
// print (jsonResult)
for usernames in jsonResult {
let influencer_username = usernames["influencer_username"] as! String
print("influencer_username: \(influencer_username)")
}
Run Code Online (Sandbox Code Playgroud) 更新到 Xcode 13.3 后,面临构建失败的libsignal-protocol-swift库问题。
这是在第二次建造时发生的,而在第一次清洁和建造后,它工作正常。另外,Xcode 13.2.1 没有此类错误。
\nXcode 错误如下:
\n在 libsignal-protocol-swift iOS 中循环;建设可能会产生不可靠的结果。这通常可以通过将目标的标头构建阶段移到编译源之前来解决。
\nCycle details:\n\xe2\x86\x92 Target 'libsignal-protocol-swift iOS' has link command with output '/Users/ankitkhanna/Library/Developer/Xcode/DerivedData/BlueSecures-brawgzawheasvqbvhxxglfnlvdlw/Build/Products/Debug-iphoneos/SignalProtocol.framework/SignalProtocol'\n\xe2\x97\x8b Target 'libsignal-protocol-swift iOS' has compile command for Swift source files\n\xe2\x97\x8b Target 'libsignal-protocol-swift iOS' has copy command from '/Users/ankitkhanna/Documents/Project-Files/Desk-Factors-Project-Files/BlueChats-IOS-master/libsignal-protocol-swift-master/libsignal-protocol-swift/SignalProtocol.h' to '/Users/ankitkhanna/Library/Developer/Xcode/DerivedData/BlueSecures-brawgzawheasvqbvhxxglfnlvdlw/Build/Products/Debug-iphoneos/SignalProtocol.framework/Headers/SignalProtocol.h'\nRun Code Online (Sandbox Code Playgroud)\n 我已经尝试在“Rossetta”模式下运行终端时进行安装。但即便如此,安装还是失败。
我使用的命令:sudo gem install cocoapods
也尝试安装 Homebrew 但出现相同的错误。
我收到的错误如下:
ERROR: Loading command: install (LoadError)
dlsym(0x7fbc673521d0, Init_date_core): symbol not found - /Library/Ruby/Gems/2.6.0/gems/date-3.1.1/lib/date_core.bundle
ERROR: While executing gem ... (NoMethodError)
undefined method `invoke_with_build_args' for nil:NilClass
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