Question

我有这种格式的输出字符串。我需要格式化字符串，以便我可以单独显示URL和我的内容，分别说明。有没有任何功能，所以我可以轻松地格式化它们？代码：

            NSLog(@"Description %@", string);

OUTPUT字符串：

    2013-07-28 11:13:59.083 RSSreader[4915:c07] Description         
    http://www.apple.com/pr/library/2013/07/23Apple-Reports-Third-Quarter-Results.html?sr=hotnews.rss
    Apple today announced financial results for its fiscal 2013 third quarter ended
    June     29, 2013. The Company posted quarterly revenue of $35.3 billion and quarterly 
    net profit of $6.9 billion, or $7.47 per diluted share. 
    Apple sold 31.2 million iPhones, which set a June quarter record.

Answer 1

您应该从字符串中提取URL，然后以格式化方式显示它。

提取网址的一种简单方法是正则表达式（ RegEX ）。

提取网址后，您可以将其替换为任何内容：

str = [str stringByReplacingOccurrencesOfString:extractedURL
                                     withString:@""];

你可以用这个： https://stackoverflow.com/a/9587987/305135

Answer 2

如果描述字符串由换行符（\ n）分隔，则可以执行以下操作：

NSArray *items = [yourString componentsSeparatedByString:@"\n"];

Answer 3

正则表达式是个好主意。

但是有一种默认的方法可以检测Objective C中的字符串中的URL NSDataDetector。 NSDataDetector内部使用正则表达式。

NSString *aString = @"YOUR STRING WITH URLs GOES HERE"
NSDataDetector *aDetector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypeLink error:nil];
NSArray *theMatches = [aDetector matchesInString:aString options:0 range:NSMakeRange(0, [aString length])];
for (int anIndex = 0; anIndex < [theMatches count]; anIndex++) {
    // If needed, Save this URL for Future Use.
    NSString *anURLString = [[[theMatches objectAtIndex:anIndex] URL] absoluteString];

    // Replace the Url with Empty String
    aTitle = [aTitle stringByReplacingOccurrencesOfString:anURLString withString:@""];
}

格式化字符串

3 个答案: