所以我试图CIDetector在Swift中使用文本检测器.当我将手机指向一段文字时,它没有检测到它.但是,如果我将手机转到一边,它可以正常工作并检测到文本.如何更改它以便以正确的相机方向检测文本？这是我的代码:
准备文本检测功能:
func prepareTextDetector() -> CIDetector {
let options: [String: AnyObject] = [CIDetectorAccuracy: CIDetectorAccuracyHigh, CIDetectorAspectRatio: 1.0]
return CIDetector(ofType: CIDetectorTypeText, context: nil, options: options)
}
文字检测功能:
func performTextDetection(image: CIImage) -> CIImage? {
if let detector = detector {
// Get the detections
let features = detector.featuresInImage(image)
for feature in features as! [CITextFeature] {
resultImage = drawHighlightOverlayForPoints(image, topLeft: feature.topLeft, topRight: feature.topRight,
bottomLeft: feature.bottomLeft, bottomRight: feature.bottomRight)
imagex = cropBusinessCardForPoints(resultImage!, topLeft: feature.topLeft, topRight: feature.topRight, bottomLeft: feature.bottomLeft, bottomRight: feature.bottomRight)
}
}
return resultImage …我正在尝试将我的项目转换为Swift 3并继续收到此错误.我已经解决了所有其他错误,但这个错误.我看到其他一些人遇到了问题,但我是JSON的新手,所以我不理解它们.任何帮助将不胜感激.
这是我的代码:
class func fetchPriceForSymbol(_ symbol: String, completion:@escaping (_ stock: StockPrice) -> ()) {
DispatchQueue.global(priority: DispatchQueue.GlobalQueuePriority.default).async {
let url = URL(string: "http://finance.yahoo.com/webservice/v1/symbols/\(symbol)/quote?format=json")
let data = try? Data(contentsOf: url!)
do {
//let object = try JSONSerialization.jsonObject(with: data!, options: .allowFragments)
let object = try! JSONSerialization.jsonObject(with: data!)
if let dictionary = object as? [String: AnyObject] {
let title = object["list"] as! NSDictionary
let title2 = title["resources"] as AnyObject!
let title3 = title2[0] as AnyObject!
let title4 = title3["resource"] as AnyObject!
let fields …我已经尝试了所有尝试让iAd在我的应用程序中工作,但没有任何东西出现.我正在努力做到这一点,我在线self.canDisplayBannerAds = true下,viewDidLoad但没有任何工作.我无法得到任何东西.我已将iAd导入并添加到我的应用中.任何帮助将不胜感激.