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只获取字符串中得数字

来源：要发发知识网

只获取字符串中得数字

NSCharacterSet *setToRemove = [[ NSCharacterSet characterSetWithCharactersInString:@"0123456789"]invertedSet];

NSString *strPhone = [[phone componentsSeparatedByCharactersInSet:setToRemove] componentsJoinedByString:@""];