我目前正在使用if (userInput.substring(i, i+1).matches("[^A-Za-z0-9 ]")) {
countSpecial++;
}
创建文字转语音应用。它在iOS 9中运行良好，但在iOS 10中出现以下错误：
无法获取属性＆＃39; LocalURL＆＃39;：错误域= MobileAssetError代码= 1＆＃34;无法复制资产属性＆＃34; UserInfo = {NSDescription =无法复制资产属性}
有谁知道这里发生了什么？
AVSpeechSynthesizer()错误发生在static let speechSynthesizer = AVSpeechSynthesizer()
static func speak(text: String) {
if speechSynthesizer.isSpeaking {
speechSynthesizer.continueSpeaking()
} else {
let speechUtterance = AVSpeechUtterance(string: text)
speechUtterance.rate = 0.45 // 0.0 -> 1.0
speechUtterance.pitchMultiplier = 1 // 0.5 -> 2.0
speechUtterance.volume = 0.75 // 0.0 -> 1.0
speechSynthesizer.speak(speechUtterance)
}
}
调用