handleGetURLEvent不会被调用

Question

我正在为我的某个应用实施自定义网址方案，但无法使其正常运行。

我将这些行添加到我的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>

在我的应用程序委托中，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];

但是当我点击带有URL的链接时，不会调用该方法。 “myscheme：//测试”

- (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？

Answer 1

听起来你可能需要清理你的项目。当Xcode构建应用程序时，有时启动服务数据库（处理URL关联）无法正确更新。清理项目应该完全删除构建的应用程序，因此下次构建项目时，它将从头开始创建，在此过程中更新Launch Services数据库。

您可能还想尝试将应用程序复制到/Applications文件夹中，这应该使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来重建其数据库：

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

Answer 2

将事件处理程序代码移至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应采用x-com-companyname-appname形式，以便它永远不会与其他任何计划发生冲突。

另请参阅：有关此主题的详细信息，请参阅How do you set your Cocoa application as the default web browser?

Answer 3

更新数据库OS10.8 Mountain Lion

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

的 -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

Answer 4

显然在沙箱下你需要在applicationWillFinishLaunching中注册，而不是applicationDidFinishLaunching：

请参阅Apple's docs。