可能有NSUserDefaults的價值UISwitch

Question

我有2個不同的視圖設置查看和默認視圖

我無法通過uiswitch值默認視圖

交換機NSUserDefaults的中存儲

位置

settingsview.m

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 

    if ([defaults objectForKey:@"SwitchState"]) 
     self.BlowSwitch.on = [defaults boolForKey:@"SwitchState"]; 

} 

- (IBAction)saveSwitchState:(id)sender 
{ 
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 

    if ([self.BlowSwitch isOn]){ 
     [defaults setBool:YES forKey:@"SwitchState"]; 
     //[defaults synchronize]; 
     [[NSNotificationCenter defaultCenter] postNotificationName:@"SwitchState" object:self userInfo:nil]; 
    } 
    else{ 
     [defaults setBool:NO forKey:@"SwitchState"]; 
     [defaults synchronize]; 
     [[NSNotificationCenter defaultCenter] postNotificationName:@"SwitchState" 
                  object:self userInfo:nil]; 
    } 
} 

defaultview.m

- (void)viewDidLoad { 

    [super viewDidLoad]; 
    [[NSNotificationCenter defaultCenter] addObserver:self 
              selector:@selector(onAppSettingsChanged:)                   name:@"SwitchState" 
               object:nil]; 
} 

- (void) onAppSettingsChanged:(NSNotification*)notification { 
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
    BOOL completed = [defaults boolForKey:@"SwitchState"]; 

    if (completed == YES) { 
     //bla bla bla 
    } 
} 

Answer 1

檢查[self.BlowSwitch isOn]時，您不執行[defaults synchronize]，刪除評論並重試。