小编use*_*185的帖子

我想在我的iPhone 4s上运行一个Swift应用程序.它在模拟器上工作正常,我的朋友可以在他的iPhone 4s上成功运行它.我有iOS 8和Xcode 6的官方发行版.

我试过了

• 重启Xcode,iPhone,电脑
• 清洁和重建
• 撤消并创建新的证书/配置文件
• Runpath搜索路径是 $(inherited) @executable_path/Frameworks
• 嵌入式内容包含Swift Code是'是'
• 代码签名身份是开发人员

以下是整个错误

dyld: Library not loaded: @rpath/libswiftCore.dylib
  Referenced from: /private/var/mobile/Containers/Bundle/Application/LONGSERIALNUMBER/AppName.app/AppName
  Reason: no suitable image found.  Did find:
    /private/var/mobile/Containers/Bundle/Application/LONGSERIALNUMBER/AppName.app/Frameworks/libswiftCore.dylib: mmap() error 1 at
address=0x008A1000, size=0x001A4000 segment=__TEXT in Segment::map() mapping
/private/var/mobile/Containers/Bundle/Application/LONGSERIALNUMBER/APPLICATION_NAME/Frameworks/libswiftCore.dylib

我在Swift中编写了一个简单的表视图应用程序.我试图将图像传递给我的本地节点服务器,并让服务器发回这个接收到的图像,但没有改变它,并将其显示在iPhone屏幕上.嵌入在每个单元格中的是一个启动此帖子/响应处理的按钮.该按钮调用以下功能:

func uploadImage() {
    /* Encode UIImage to be passed to server */
    let image = UIImage(named: "myImage.png")
    let imageData = UIImageJPEGRepresentation(image, 1.0)
    let base64String = imageData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.fromRaw(0)!)
    var params = ["username":"myUsername", "image": base64String ] as Dictionary

    /* Set up request */
    let url = NSURL(string: "http://localhost:3000/postRequestHere")
    var request = NSMutableURLRequest(URL: url)
    var session = NSURLSession.sharedSession()
    request.HTTPMethod = "POST"
    var err: NSError?
    request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: nil, error: &err)
    request.addValue("application/json", forHTTPHeaderField: "Content-Type")
    request.addValue("application/json", forHTTPHeaderField: "Accept")    

    var task = session.dataTaskWithRequest(request, completionHandler: {data, …

我正在尝试学习如何在后台线程上调度计算,然后更新UI.当我在使用谷歌地图的现有项目中尝试此操作时,"背景"后跟"主"打印一次.不再进行打印,就好像计时器不重复一样.

此外,当我创建一个空白的应用程序并添加此代码时,根本没有任何打印.

let queue = dispatch_queue_create("myTimer", nil);
let timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
dispatch_source_set_timer(timer, DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC, 1 * NSEC_PER_SEC);

dispatch_source_set_event_handler(timer) {
    println("background")
    dispatch_async(dispatch_get_main_queue(), { println("main") })
}

dispatch_resume(timer)