檢查狀態欄中是否存在項目？

Question

是否可以檢查系統項目是否在OSX的狀態欄中可見，即藍牙圖標？

有沒有人嘗試過這樣做？在文檔中沒有提到過什麼。

Answer 1

活動菜單欄項目的路徑在~/Library/Preferences/com.apple.systemuiserver.plist

列出您可以檢查這樣

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);