Ios Swift:缺少参数'；地点'；随时待命

如何在for循环中将str准确定义为字符串

for str in aryFilters{

     var str1 : NSString=NSString(string: str)
     var filters : CIFilter=CIFilter(name: str1)  

}

for str in arrayFilters as [String] {
    var str1 : NSString = NSString(string: str)
    var filters : CIFilter = CIFilter(name: str1)  
}