handleGetURLEvent 不被调用



我正在为我的一个应用程序实现一个自定义URL方案,但无法使其工作。

我把这些行添加到我的Info.plist中:

<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleURLName</key>
        <string>MyApp URL</string>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>myscheme</string>
        </array>
    </dict>
</array>

在我的应用程序代理中,我在ApplicationDidFinishedLaunching:中安装了事件处理程序

NSAppleEventManager *appleEventManager = [NSAppleEventManager sharedAppleEventManager];
[appleEventManager setEventHandler:self andSelector:@selector(handleGetURLEvent:withReplyEvent:) forEventClass:kInternetEventClass andEventID:kAEGetURL];

但当我点击URL为例如的链接时,不会调用该方法。"myscheme://test"

- (void)handleGetURLEvent:(NSAppleEventDescriptor *)event
           withReplyEvent:(NSAppleEventDescriptor *)replyEvent {
    // Extract the URL from the Apple event and handle it here.
    NSString* url = [[event paramDescriptorForKeyword:keyDirectObject] stringValue];
    NSLog(@"%@", url);
}

我错过了什么?

听起来你可能需要清理你的项目。有时,当Xcode构建应用程序时,Launch Services数据库(处理URL关联)没有正确更新。清理项目应该会完全删除已生成的应用程序,因此下次生成项目时,它将在更新启动服务数据库的过程中从头开始创建。

您可能还想尝试将应用程序复制到/Applications文件夹中,这将使Launch Services重新解析应用程序的Info.plist文件。

您可以通过在终端中运行以下命令来强制启动服务重建其数据库:

/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user

将事件处理程序代码移动到init方法:

- (id) init
{   
    if ((self = [super init]))
    {
        NSAppleEventManager *appleEventManager = [NSAppleEventManager sharedAppleEventManager];
        [appleEventManager setEventHandler:self andSelector:@selector(handleGetURLEvent:withReplyEvent:) forEventClass:kInternetEventClass andEventID:kAEGetURL];
        // Add the following to set your app as the default for this scheme
        NSString * bundleID = [[NSBundle mainBundle] bundleIdentifier];
        LSSetDefaultHandlerForURLScheme((CFStringRef)@"myscheme", (CFStringRef)bundleID 
    }
return self;
}

注意:myscheme应该采用x-com-companyname-appname的形式,这样它就不会与任何其他方案发生冲突。

另请参阅:有关此主题的更多信息,请参阅如何将您的Cocoa应用程序设置为默认web浏览器?

更新数据库OS10.8 Mountain Lion

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregger-f

-kill Reset the Launch Services database before doing anything else -seed If database isn't seeded, scan default locations for applications and libraries to register -lint Print information about plist errors while registering bundles -convert Register apps found in older LS database files -lazy n Sleep for n seconds before registering/scanning -r Recursive directory scan, do not recurse into packages or invisible directories -R Recursive directory scan, descending into packages and invisible directories

-f force-update registration even if mod date is unchanged

-u unregister instead of register -v Display progress information -dump Display full database contents after registration -h Display this help

显然,在沙箱下,您需要在applicationWillFinishLaunching:中注册,而不是在applicationDidFinishLaunching:中注册

请参阅苹果的文档。

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