Question

我在我的iPhone程序中从sqlite数据库中获取数据。然后我从DB获得的内容放在UITextView中。提取的文本示例如下：

“你好，这是一个例子。它有”“双引号”“，以简单的”

结尾

我想消除单曲，并用单曲取代双曲。但它不起作用。这是我的代码：

NSString *question;
question = [[NSString stringWithUTF8String:(char *)sqlite3_column_text(statement1,1)] copy];   
question = [question stringByReplacingOccurrencesOfString:@"\"\"" withString:@"$$"];   
question = [question stringByReplacingOccurrencesOfString:@"\"" withString:@""];   
question = [question stringByReplacingOccurrencesOfString:@"$$" withString:@"\""];

有什么问题？

非常感谢！

Answer 1

代码看起来不错;我试着做了

NSString *question = @"\"Hello this is a example. It has \"\" double quotes \"\" and ends with simple\"";
question = [question stringByReplacingOccurrencesOfString:@"\"\"" withString:@"$$"];
question = [question stringByReplacingOccurrencesOfString:@"\"" withString:@""];
question = [question stringByReplacingOccurrencesOfString:@"$$" withString:@"\""];

并且工作正常（好吧，除了引号曾经的位置旁边有额外的空格，但很难知道你想要什么）

如果添加一些

NSLog(@"question is now: %@", question);

你可能会知道发生了什么，或者如果没有，你至少会有更多的信息要发布！

替换字符串的出现次数

1 个答案: