swift string 转data 文心快码BaiduComate 在Swift中,将String转换为Data是一个常见的操作,通常用于数据传输、存储或加密等场景。以下是详细的步骤和代码示例,用于说明如何将String转换为Data: 1. 导入需要的库或框架 对于基本的字符串到数据的转换,不需要导入额外的库或框架,因为Swift标准库已经提供了相关的功能。 2...
24print(data.count)//52526//String转[UInt8]27str="hello"28array=[UInt8](str.utf8)29print(array)//[104, 101, 108, 108, 111]3031//[UInt8]转String32array=[0x39,0x39,0x39]33str=String(bytes:array,encoding: .utf8)!34print(str)//999...
Swift version: 5.10 Paul Hudson @twostraws May 28th 2019Many APIs, such as Codable, rely on their text input being provided as a Data rather than a String, but fortunately it only takes one line of code to make that conversion:let data = Data(someString.utf8)...
func getWeekDay(dateTime:String)->Int{ let dateFmt = NSDateFormatter() dateFmt.dateFormat = "yyyy-MM-dd HH:mm:ss" let date = dateFmt.dateFromString(dateTime) let interval = Int(date!.timeIntervalSince1970) let days = Int(interval/86400) // 24*60*60 let weekday = ((days + 4)%7+...
public class StringToDate { public static void main(String[] args) { SimpleDateForm...
Swift中Data,String,[UInt8]的相互转换 var data=Data() var array=[UInt8]() var str="" //Data转[UInt8] data.append(10) array=[UInt8](data) print(array)//[10] //[UInt8]转Data array=[1,2,3,4,5] data=Data(array) print(data.count)//5 ...
Swift 示例 ifletconvertedString=String(data:data,encoding:.utf8){print("NSString:\(convertedString)")}else{print("Error: Unable to convert NSData to NSString")} 1. 2. 3. 4. 5. 处理错误 在实际开发中,转换时可能会遇到无法转换的情况。典型的错误包括字符串不符合指定编码或数据无法正确解码。
Although strings in Swift have value semantics, strings use a copy-on-write strategy to store their data in a buffer. This buffer can then be shared by different copies of a string. A string’s data is only copied lazily, upon mutation, when more than one string instance is using the ...
nstr = NSString(data: data!, encoding: NSUTF8StringEncoding) url = NSURL(dataRepresentation: data!, relativeToURL: nil) 上面的做法是先将一个 Uint8 数组填充好,转化为 NSData,然后再变成需要的字符串。 以上就是 swift 中,String 和 NS-XXX 系列的互相转换的相关操作,希望可以帮助大家更好的学习...
guardletjsonData=jsonString.data(using:.utf8)else{print("Error: Cannot convert string to Data")// 检查字符串转换是否成功return} 1. 2. 3. 4. 步骤4:解析JSON数据 调用JSONSerialization类的jsonObject(with:options:)方法,将数据解析为Swift对象。在此例中,我们将解析为一个数组。