小编Fab*_*gue的帖子

我目前正在我的应用程序中打开链接WebView,但我正在寻找一个选项来在Safari中打开链接.

当我尝试将我的应用程序提交到应用程序商店时,我总是收到此消息.

这是一张消息的图片:

如果有人可以帮我解决这个问题,那么我可以将我的应用程序提交到商店.

目前我的ActionSheet遇到了大麻烦.在iPhone上它运行良好,但在iPad上它只会崩溃

我用一个按钮创建一个新项目

import UIKit

extension ViewController : UIActionSheetDelegate {

    func actionSheet(actionSheet: UIActionSheet, didDismissWithButtonIndex buttonIndex: Int) {

        if actionSheet.tag == 0 {
            if buttonIndex == 1 {
                // doing something for "product page"
            } else if (buttonIndex == 2) {
                // doing something for "video"
            }
        }
    }

}

class ViewController: UIViewController, UIActionSheetDelegate {
    @IBAction func test(sender: AnyObject) {

        let systemVersion: NSInteger = (UIDevice.currentDevice().systemVersion as NSString).integerValue
        if systemVersion < 8 {
            // iOS7:
            let action:UIActionSheet = UIActionSheet(title: "Change Map Type", delegate: …

我设法在Swift中获得了注释引脚的自定义图标,但现在我仍然使用2个不同的图像进行不同的注释.现在,按钮会向地图添加注释.应该有另一个按钮,它还添加了注释,但带有另一个图标.

有没有办法使用reuseId？

class ViewController: UIViewController, MKMapViewDelegate {

@IBOutlet weak var Map: MKMapView!

@IBAction func btpressed(sender: AnyObject) {

    var lat:CLLocationDegrees = 40.748708
    var long:CLLocationDegrees = -73.985643
    var latDelta:CLLocationDegrees = 0.01
    var longDelta:CLLocationDegrees = 0.01

    var span:MKCoordinateSpan = MKCoordinateSpanMake(latDelta, longDelta)
    var location:CLLocationCoordinate2D = CLLocationCoordinate2DMake(lat, long)
    var region:MKCoordinateRegion = MKCoordinateRegionMake(location, span)

    Map.setRegion(region, animated: true)


    var information = MKPointAnnotation()
    information.coordinate = location
    information.title = "Test Title!"
    information.subtitle = "Subtitle"

    Map.addAnnotation(information)
}

func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
    if !(annotation is MKPointAnnotation) …

if (view.annotation.title as String!) == "Helgoland " {
  currentLong = 7.889021
  currentLat = 54.180210 
  url = "google.com"

  let alertController: UIAlertController = UIAlertController(title: "Change Map Type", message: nil, preferredStyle: UIAlertControllerStyle.Alert)
  let cancelAction: UIAlertAction = UIAlertAction(title: "Back", style: UIAlertActionStyle.Cancel, handler: nil)
  let button1action: UIAlertAction = UIAlertAction(title: "Product Page", style: UIAlertActionStyle.Default, handler: { (action: UIAlertAction!) -> () in
    performSegueWithIdentifier("showShop", sender: self)
  })
  let button2action: UIAlertAction = UIAlertAction(title: "Video", style: UIAlertActionStyle.Default, handler: { (action: UIAlertAction!) -> () in
    youtubeVideoID = "XX"
    UIApplication.sharedApplication().openURL(NSURL(string: "http://www.youtube.com/watch?v=\(youtubeVideoID)"))
  }) …

我尝试创建一个NavBar,到目前为止NavBar没有问题,但如果我尝试添加按钮和标题,我会被吸.

我的NavBar看起来像

let NameHeight = screenHeight * 0.09
let NameWidth = screenWidth
let navBar: UINavigationBar = UINavigationBar(frame: CGRect(x: 0, y: 0, width: NameWidth, height: NameHeight))
self.view.addSubview(navBar)

所以我尝试设置我的NavBar标题

navigationBar.topItem.title = "some title"
or
navigationBar.title = "some title"

但都失败了.
此外,如果我尝试设置一个按钮

let btnName = UIButton()
btnName.setImage(UIImage(named: "imagename"), forState: .Normal)
btnName.frame = CGRectMake(0, 0, 30, 30)
btnName.addTarget(self, action: Selector("action"), forControlEvents: .TouchUpInside)

//.... Set Right/Left Bar Button item
let rightBarButton = UIBarButtonItem()
rightBarButton.customView = btnName
self.navigationItem.rightBarButtonItem = rightBarButton

这不会给我一个错误,但按钮根本不显示

我在我的应用程序中下载了一些PDF文件,并希望在关闭应用程序时删除这些文件.

由于某种原因,它不起作用:

创建文件:

let reference = "test.pdf"    
let RequestURL = "http://xx/_PROJEKTE/xx\(self.reference)"
let ChartURL = NSURL(string: RequestURL)

//download file
let documentsUrl =  NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first! as NSURL
let destinationUrl = documentsUrl.URLByAppendingPathComponent(ChartURL!.lastPathComponent!)
if NSFileManager().fileExistsAtPath(destinationUrl.path!) {
    print("The file already exists at path")
} else {
    //  if the file doesn't exist
    //  just download the data from your url
    if let ChartDataFromUrl = NSData(contentsOfURL: ChartURL!){
        // after downloading your data you need to save it to your destination url
        if ChartDataFromUrl.writeToURL(destinationUrl, atomically: true) …

我目前试图找到一种方法删除,同时运行应用程序TabBar项目,我找到了启用或禁用它的方法,但没有完成删除它.

为了禁用它我做:

在ViewDidLoad中

if let tabBarItem = self.tabBarController?.tabBar.items?[3] as? UITabBarItem {
            tabBarItem.enabled = false
}

这很好,但仍然用户可以看到TabBar项目,我只是完成删除它,有没有办法？

我想通过Parse触发TabBarItem,如果我将Parse Data设置为true,它应该显示不应该的其他方式.

我遇到了一个小问题,让我从代码开始

class ViewController: UIViewController {

@IBOutlet weak var LBoutput: UILabel!
@IBAction func BTclick(sender: AnyObject) {
    var url = NSURL(string: "http://google.com")
    println("test0")
    let getdata = NSURLSession.sharedSession().dataTaskWithURL(url){(data ,response , error) in
        var htmlContent = NSString(data: data, encoding: NSUTF8StringEncoding)
        println("test1")
        println("test2")
        self.LBoutput.text = "test6"
    }
    println("test3")
    getdata.resume()
    println("test4")
    LBoutput.text = "test5"

}

这段代码在控制台中给我一个输出

test0
test3
test4
test1
test2

此外,标签没有时间更新为"test5",但更新为"test6"的标签需要30秒.

我不知道为什么这需要这么长时间,任何人都有想法？

我尝试在我的WebView上使用一些新的JavaScript

stringByEvaluatingJavaScriptFromString 功能

我不熟悉语法,所以我试过

 func stringByEvaluatingJavaScriptFromString( "document.documentElement.style.webkitUserSelect='none'": String) -> String? 

如下所示https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIWebView_Class/index.html#//apple_ref/occ/instm/UIWebView/stringByEvaluatingJavaScriptFromString:但是我收到"预期"的错误".分隔器"