在 safari 中打开 url 时应用程序崩溃 [英] App crashes up when opening url in safari
问题描述
我正在尝试使用以下代码在 safari 中打开 url:
I'm trying to open url in safari with this code:
- (IBAction)webButton:(id)sender {
NSString *url = @"www.google.com";
url = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[[UIApplication sharedApplication]openURL:[NSURL URLWithString:url]];
}
但每次应用崩溃时.
有人遇到过类似的情况吗?
Has someone been in similar situation?
这里是 ss off 崩溃:http://dl.dropbox.com/u/77033905/urlInSafariCrashesUp.png
Here is ss off crash: http://dl.dropbox.com/u/77033905/urlInSafariCrashesUp.png
更新:
NSString *recipients = @"mailto:first@example.com?subject=Hello from Croatia!";
NSString *body = @"&body=It is sunny in Croatia!";
NSString *email = [NSString stringWithFormat:@"%@%@", recipients, body];
email = [email stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:email]];
这用于打开邮件，但与 sharedApplication 相同.它崩溃了.
This is for opening mail but same over sharedApplication. It crashes up to.
更新 2:控制台日志:argv 字符 ** 0xbffff520*argv 字符 * 0xbffff658**argv 字符 '/'argc int 1
UPDATE 2: Console log: argv char ** 0xbffff520 *argv char * 0xbffff658 **argv char '/' argc int 1
更新 3:它调用 IBAction 但崩溃了.当我在根视图中尝试此代码时，它可以工作.我添加并连接了 IB 按钮，一切正常.
UPDATE 3: It calls IBAction but crashes up. When I try this code in root view it works. I addedd and connected in IB button and everything is ok with that.
在子视图中调用 UIApplication sharedApplication 有问题吗?我应该换个方式打电话吗?
Is there problem with calling UIApplication sharedApplication in subview? Should I call on different way?
更新 4:
我发现问题是即使我在子视图中调用空的 IBAction，所以问题显然不在 UIApplication 中，而是在子视图中调用 IBAction.
I figure it out that problem is even when i call empty IBAction in subview, so problem obviously is not in UIApplication but in calling IBAction in subview.
- (IBAction)webButton:(id)sender {
// empty
}
更新 5:解决方案:如何在子视图中调用IBAction?
推荐答案
您没有提供有效的 URL，URL 始终采用 scheme: 形式.
You are not providing a valid URL, an URL is always of the form scheme:<host part>.
// This is correct and will work:
[[UIApplication sharedApplication] openUrl:[NSURL URLWithString:@"http://www.google.com"]]
// Updated with body and subject:
NSMutableString* url = [NSMutableString stringWithString:@"mailto:"];
[url appendString:@"first@example.com"];
[url appendFormat:@"?subject=%@", [@"Hello from Croatia" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
[url appendFormat:@"&body=%@", [@"This is a body" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
这篇关于在 safari 中打开 url 时应用程序崩溃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
