如何在Swift 3中写入/读取plist

// 创建要写入plist的数据
let data = ["name": "John", "age": 25, "city": "New York"]

// 将数据转换为Data对象
do {
    let plistData = try PropertyListSerialization.data(fromPropertyList: data, format: .xml, options: 0)
    
    // 获取文件路径
    let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
    let plistPath = documentsDirectory.appendingPathComponent("data.plist")
    
    // 将Data对象写入文件
    try plistData.write(to: plistPath)
    print("写入成功")
} catch {
    print("写入失败：\(error)")
}

// 获取文件路径
let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
let plistPath = documentsDirectory.appendingPathComponent("data.plist")

// 读取文件内容为Data对象
if let plistData = try? Data(contentsOf: plistPath) {
    // 将Data对象转换为字典或数组
    do {
        let data = try PropertyListSerialization.propertyList(from: plistData, options: [], format: nil)
        print("读取成功：\(data)")
    } catch {
        print("读取失败：\(error)")
    }
} else {
    print("文件不存在")
}