检查状态栏中是否存在项目？

Question

是否可以检查系统项是否在OSX的状态栏中可见，即蓝牙图标？

以前有人试过这样做吗？没有提到文件中的内容。

Answer 1

活动菜单栏项的路径列在~/Library/Preferences/com.apple.systemuiserver.plist

中

你可以这样检查

NSURL *userLibraryURL = [[NSFileManager defaultManager] URLForDirectory:NSLibraryDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];
NSURL *systemUIServerPreferences = [userLibraryURL URLByAppendingPathComponent:@"Preferences/com.apple.systemuiserver.plist"];
NSDictionary *data = [NSDictionary dictionaryWithContentsOfURL:systemUIServerPreferences];
BOOL bluetoothIsInMenuBar = [data[@"menuExtras"] containsObject:@"/System/Library/CoreServices/Menu Extras/Bluetooth.menu"];

NSLog(@"%d", bluetoothIsInMenuBar);

或使用NSPredicate

NSURL *userLibraryURL = [[NSFileManager defaultManager] URLForDirectory:NSLibraryDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];
NSURL *systemUIServerPreferences = [userLibraryURL URLByAppendingPathComponent:@"Preferences/com.apple.systemuiserver.plist"];
NSDictionary *data = [NSDictionary dictionaryWithContentsOfURL:systemUIServerPreferences];
NSPredicate *bluetoothPredicate = [NSPredicate predicateWithFormat:@"SELF contains 'Bluetooth'"];
BOOL bluetoothIsInMenuBar = [[data[@"menuExtras"] filteredArrayUsingPredicate:bluetoothPredicate] count];        

NSLog(@"%d", bluetoothIsInMenuBar);