Question

我让用户检查某些短语以构建电子邮件。这些短语用逗号分隔，但我需要将这些短语设为小写，除非它以I或I开头。除非短语开始“It”，否则它的效果很好。这句话仍然是大写的。我需要它是小写的。

CODE

    NSString string = [NSString stringWithFormat:@"%@, ",boxesChecked[idx]];
    // strings are in an array
    [boxesChecked enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {

    if (idx == 0) { //first string

        if ([string rangeOfString:@"I'm"].location != NSNotFound) {
            // leave uppercase
        } else if ([string rangeOfString:@"It"].location != NSNotFound) {
            string = [string stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[[string substringToIndex:1] lowercaseString]];

        } else if ([string hasPrefix:@"I"]) {
            // do nothing

        } else {
            string = [string stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[[string substringToIndex:1] lowercaseString]];
        }
    }

Answer 1

您可以使用此命令将字符串更改为lowe case

NSString * myString = @＆＃34; Hello，World！＆＃34 ;; NSString * lower = [myString lowercaseString ]; //这将是＆＃34;你好，世界！＆＃34;

NSString使某些单词小写

1 个答案: