[英]How to convert NSArray into Swift Array in swift 3
I have two array 我有两个阵列
var arr1 = [NSArray]()
var arr2 = [String]()
And I want to convert NSArray
into String Array I am using 我想将
NSArray
转换为我正在使用的字符串数组
arr2 = arr1 as! arr2 = arr1 as! [String]
[串]
But it giving me error :- 但它给了我错误: -
'NSString' is not a subtype of 'NSArray'
Is there any other method to convert? 还有其他方法可以转换吗?
var arr1 = [NSArray]()
is a swift array of NSArray. 是一系列快速的NSArray。 You are using wrong syntax for
NSArray
您使用的
NSArray
语法错误
In order to convert NSArray
to swift Array 为了将
NSArray
转换为swift Array
Use the proper syntax: 使用正确的语法:
var arr1 = NSArray(objects: "a","b","c")
var objCArray = NSMutableArray(array: arr1)
if let swiftArray = objCArray as NSArray as? [String] {
// Use swiftArray here
print(swiftArray)
}
It will print 它会打印出来
["a", "b", "c"]
Another way 其他方式
let swiftArray: [String] = objCArray.compactMap({ $0 as? String })
no forced casting required. 不需要强制铸造。
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