本文介绍了iPhone SDK:检查NSURL无效的网址的有效性?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试检查给定的网址是否有效,我这样做:
I'm trying to check if a given URL is valid and i'm doing it like this:
- (BOOL)urlIsValid:(NSString *)address {
NSURL *testURL = [NSURL URLWithString:address];
if (testURL == nil) {
return NO;
}
else {
return YES;
}
}
由于URLWithString应该返回nil如果URL格式不正确,我认为这样可行,但不是出于某种原因。有人可以告诉我为什么吗?
提前致谢!
Since "URLWithString" is supposed to return "nil" if the URL is malformed I thought this would work but it doesn't for some reason. Could someone please tell me why?Thanks in advance!
推荐答案
NSURLRequest *req = [NSURLRequest requestWithURL:[NSURL URLWithString:@"yourstring"]];
bool valid = [NSURLConnection canHandleRequest:req];
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