搜：
swift string range
How To Find A Substring In Range of a Swift String
nsstring – NSRange to Range<String.Index> – Stack Overflow
swift中字符串截取方法(substring） – swift迷
最后用：
substringWithRange(chineseRangeIdx)
完整代码：
extension String { var containsChineseCharacters: Bool { return self.rangeOfString("\\p{Han}", options: .RegularExpressionSearch) != nil } var isAllChineseCharacters: Bool { var isAll = false if let chineseRangeIdx = self.rangeOfString("\\p{Han}.+", options: .RegularExpressionSearch) { print("chineseRangeIdx=\(chineseRangeIdx)") let chineseSubStr = self.substringWithRange(chineseRangeIdx) print("chineseSubStr=\(chineseSubStr)") if chineseSubStr == self { isAll = true } } return isAll } } |
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