objective-c – 如何为Mac App创建一个帮助应用程序,以便在用户登录时启动它？

其实我读了下面的文件：

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.

我不太明白,有人知道该怎么办？

而且这是什么意思：

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？

解决方法

+ (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.您将需要在构建期间创建它,并在那里复制帮助器.