Question

NSString *re = [[sqlArray objectAtIndex:0] valueForKey:@"Question"];
            question = [re stringByReplacingOccurrencesOfString:@"√≠" withString:@"'"];

            question = [re stringByReplacingOccurrencesOfString:@"√Æ" withString:@"'"];
         question = [re stringByReplacingOccurrencesOfString:@"í" withString:@"'"];
        question = [re stringByReplacingOccurrencesOfString:@"√¨" withString:@"'"];
        question = [re stringByReplacingOccurrencesOfString:@"ë" withString:@"'"];
        NSLog(@"question : %@",question);

字符串仍然没有被替换，它显示

问题：逗留时间最长的居民√≠通常是那些

的人

作为nslog。什么可能是错的？

Answer 1

试试这个：

NSString *re = [[sqlArray objectAtIndex:0] valueForKey:@"Question"];
            question = [re stringByReplacingOccurrencesOfString:@"√≠" withString:@"'"];

            question = [question stringByReplacingOccurrencesOfString:@"√Æ" withString:@"'"];
         question = [question stringByReplacingOccurrencesOfString:@"í" withString:@"'"];
        question = [question stringByReplacingOccurrencesOfString:@"√¨" withString:@"'"];
        question = [question stringByReplacingOccurrencesOfString:@"ë" withString:@"'"];
        NSLog(@"question : %@",question);

Answer 2

当您重复设置question = ...时，您只是更改了局部变量而不是Question键的值。所以用

完成这个

[[sqlArray objectAtIndex:0] setObject:question forKey:@"Question"];

（假设这是一个NSDictionary;也许你应该使用setValue:forKey:，但是如果没有看到更多的代码，我就无法分辨。）

此外，正如joern指出的那样，您应该在第一次替换后使用question = [question stringBy...而不是question = [re stringBy...。

iphone：问题替换字符串

2 个答案: