objective-c - 如何为 Mac App 创建辅助应用程序以在用户登录时启动它？

Question

其实我看了下面的文档:

Applications can contain a helper application as a full application bundle, stored inside the main application bundle in the Contents/Library/LoginItems directory. Set either the LSUIElement or LSBackgroundOnly key in the Info.plist file of the helper application’s bundle.

不太明白，谁知道怎么办？

还有，这是什么意思:

Note: Before calling the SMLoginItemSetEnabled function, first register with Launch Services by calling the LSRegisterURL function with the URL for the helper application bundle.

有没有关于如何使用 LSRegisterURL 和 SMLoginItemSetEnabled 的例子？

Answer 1

+ (void)startHelper {
    NSURL *helperURL = [[[NSBundle mainBundle] bundleURL] URLByAppendingPathComponent:@"Contents/Library/LoginItems/YourHelper.app" isDirectory:YES];
    OSStatus status = LSRegisterURL((CFURLRef)helperURL, YES);
    if (status != noErr) {
        NSLog(@"Failed to LSRegisterURL '%@': %jd", helperURL, (intmax_t)status);
    }


    Boolean success = SMLoginItemSetEnabled(CFSTR("com.yourcompany.helper-CFBundleIdentifier-here"), YES);
    if (!success) {
        NSLog(@"Failed to start Helper");
    }
}

请注意，Helper 必须与主应用程序一起打包在“Contents/Library/LoginItems”目录中。您将需要在构建过程中创建它并将助手复制到那里。