Question

我有一个NSDictionary列表，我想将它保存在一个文件中。我可以将它保存在文本文件中，但我无法将其读取到[NSDictionary]

var text : [NSDictionary] = []

保存文件

let json = JSONSerializer.toJson(text)
try json.write(to: path, atomically: false, encoding: String.Encoding.utf8)

这是我的列表NSDictionary

[{ change = true; name = data1; },{ change = true; name = data2; }]

Answer 1

do {
        let text2 = try NSString(contentsOfURL: path, encoding: NSUTF8StringEncoding) // path give your file path
        print(text2)
    }
    catch {/* error handling here */}
}

试试这个并告诉您的问题是否解决。

Answer 2

更新代码读取文件

display: flex;    
flex-wrap: wrap;     
max-width: 1170px;   
margin-right: auto;   
margin-left: auto;   
box-sizing: content-box;

并打印（text2）

let text2 = try String(contentsOf: path!, encoding: String.Encoding.utf8)
                    print(text2)
                    arrayFile = try JSONSerializer.toArray(text2) as! [NSDictionary]
                    print(arrayFile)

Answer 3

您可以使用plist获取数据字典。以下是我们如何将数据写入plist文件。

var paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
var path = paths.stringByAppendingPathComponent("data.plist")
var fileManager = NSFileManager.defaultManager()
if (!(fileManager.fileExistsAtPath(path)))
{
    var bundle : NSString = NSBundle.mainBundle().pathForResource("data", ofType: "plist")
    fileManager.copyItemAtPath(bundle, toPath: path, error:nil)
}
data.setObject(object, forKey: "object")
data.writeToFile(path, atomically: true)

要从plist文件中读取数据，

var paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
var path = paths.stringByAppendingPathComponent("data.plist")
let save = NSDictionary(contentsOfFile: path)

使用列表NSDictonary swift写入和读取文件

3 个答案: