iOS 应用程序 - 用户默认使用 NSUserDefaults，保存在模拟器上但不在设备上

Question

I have an iOS app , that has been saving user defaults using NSUserDefaults, however, all of a sudden , the app is no longer saving defaults on the device , but it works perfectly in the simulator.

Here are the methods I am calling to save settings

        -(void)saveSettings{

        defaults = [NSUserDefaults standardUserDefaults];
        settingsData = [defaults objectForKey:(NSString *)@"SettingsKey"];

      settingsDict = [NSKeyedUnarchiver unarchiveObjectWithData:settingsData];

        NSMutableDictionary * settingsMutableDictionary = [settingsDict mutableCopy];

        [settingsMutableDictionary setValue: [NSNumber numberWithBool:_dawnAlarmSwitch.on] forKey: @"dawnAlarmSwitch"];
        [settingsMutableDictionary setValue:[NSNumber numberWithBool:_sunriseAlarmSwitch.on] forKey:  @"sunriseAlarmSwitch"];
        [settingsMutableDictionary setValue:[NSNumber numberWithBool:_noonAlarmSwitch.on] forKey:  @"noonAlarmSwitch"];
        [settingsMutableDictionary setValue:[NSNumber numberWithBool:_afternoonAlarmSwitch.on] forKey:  @"afternoonAlarmSwitch"];
        [settingsMutableDictionary setValue:[NSNumber numberWithBool:_sunsetAlarmSwitch.on] forKey:  @"sunsetAlarmSwitch"];
        [settingsMutableDictionary setValue:[NSNumber numberWithBool:_nightAlarmSwitch.on] forKey:  @"nightAlarmSwitch"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_dawnAlarmDelaySlider.value] forKey:  @"dawnAlarmDelaySlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_noonAlarmDelaySlider.value] forKey:  @"noonAlarmDelaySlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_afternoonAlarmDelaySlider.value] forKey:  @"afternoonAlarmDelaySlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_sunsetAlarmDelaySlider.value] forKey:  @"sunsetAlarmDelaySlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_nightAlarmDelaySlider.value] forKey:  @"nightAlarmDelaySlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_dawnSnoozeIntervalSlider.value] forKey:  @"dawnSnoozeIntervalSlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_noonSnoozeIntervalSlider.value] forKey:  @"noonSnoozeIntervalSlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_afternoonSnoozeIntervalSlider.value] forKey:  @"afternoonSnoozeIntervalSlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_sunsetSnoozeIntervalSlider.value] forKey:  @"sunsetSnoozeIntervalSlider"];
        [settingsMutableDictionary setValue:[NSNumber numberWithInt:_nightSnoozeIntervalSlider.value] forKey:  @"nightSnoozeIntervalSlider"];

       // CFShow((__bridge CFTypeRef)(settingsDict));

        settingsDict = [settingsMutableDictionary copy];

        settingsData = [NSKeyedArchiver archivedDataWithRootObject:settingsDict];
        [defaults setObject:settingsData forKey:(NSString *)@"SettingsKey"];
        [defaults synchronize];

        kvStore = [NSUbiquitousKeyValueStore defaultStore];
        [kvStore setObject:settingsData forKey:(NSString *)@"SettingsKey"];
        [kvStore synchronize];

    }

and here is the method for retrieving settings:

    -(void)getSettings{

        kvStore = [NSUbiquitousKeyValueStore defaultStore];

        settingsData = [kvStore objectForKey:(NSString *)@"SettingsKey"];

        if (!settingsData){

            defaults= [NSUserDefaults standardUserDefaults];
            settingsData = [defaults objectForKey:(NSString *)@"SettingsKey"];

        }


        if (!settingsData)
            [self createSettings];

        if (settingsData){

                settingsDict = [NSKeyedUnarchiver unarchiveObjectWithData:settingsData];
               _showArabicQuranSwitch.on= [[settingsDict objectForKey:@"showArabicQuranSwitch"] boolValue];

                _dawnAlarmSwitch.on= [[settingsDict objectForKey:@"dawnAlarmSwitch"] boolValue];
                _sunriseAlarmSwitch.on= [[settingsDict objectForKey:@"sunriseAlarmSwitch"] boolValue];
                _noonAlarmSwitch.on= [[settingsDict objectForKey:@"noonAlarmSwitch"] boolValue];
                _afternoonAlarmSwitch.on= [[settingsDict objectForKey:@"afternoonAlarmSwitch"] boolValue];
                _sunsetAlarmSwitch.on= [[settingsDict objectForKey:@"sunsetAlarmSwitch"] boolValue];
                _nightAlarmSwitch.on= [[settingsDict objectForKey:@"nightAlarmSwitch"] boolValue];

                _dawnAlarmDelaySlider.value= [[settingsDict objectForKey:@"dawnAlarmDelaySlider"] intValue];
                _noonAlarmDelaySlider.value= [[settingsDict objectForKey:@"noonAlarmDelaySlider"] intValue];
                _afternoonAlarmDelaySlider.value= [[settingsDict objectForKey:@"afternoonAlarmDelaySlider"] intValue];
                _sunsetAlarmDelaySlider.value= [[settingsDict objectForKey:@"sunsetAlarmDelaySlider"] intValue];
                _nightAlarmDelaySlider.value= [[settingsDict objectForKey:@"nightAlarmDelaySlider"] intValue];

                _dawnSnoozeIntervalSlider.value= [[settingsDict objectForKey:@"dawnSnoozeIntervalSlider"] intValue];

                if(self.dawnAlarmDelaySlider.value <0.0f)
                _dawnAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins before",  _dawnAlarmDelaySlider.value*-1];
                else
                    _dawnAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins after",  _dawnAlarmDelaySlider.value];




                _noonSnoozeIntervalSlider.value= [[settingsDict objectForKey:@"noonSnoozeIntervalSlider"] intValue];

                if(self.noonAlarmDelaySlider.value<0.0f)
                _noonAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins before",  _noonAlarmDelaySlider.value*-1];
                else
                     _noonAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins after",  _noonAlarmDelaySlider.value];


                _afternoonSnoozeIntervalSlider.value= [[settingsDict objectForKey:@"afternoonSnoozeIntervalSlider"] intValue];

                 if(self.afternoonAlarmDelaySlider.value<0.0f)
                     _afternoonAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins before",  _afternoonAlarmDelaySlider.value*-1];
                 else
                _afternoonAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins after",  _afternoonAlarmDelaySlider.value];



                _sunsetSnoozeIntervalSlider.value= [[settingsDict objectForKey:@"sunsetSnoozeIntervalSlider"] intValue];

                 if(self.sunsetAlarmDelaySlider.value<0.0f)
                     _sunsetAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins before",  _sunsetAlarmDelaySlider.value*-1];
                 else
                _sunsetAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins after",  _sunsetAlarmDelaySlider.value];




                _nightSnoozeIntervalSlider.value= [[settingsDict objectForKey:@"nightSnoozeIntervalSlider"] intValue];

                if(self.nightAlarmDelaySlider.value<0.0f)
                    _nightAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins before",  _nightAlarmDelaySlider.value*-1];
                else
                   _nightAlarmDelayLabel.text = [NSString stringWithFormat:@"%.0f mins after",  _nightAlarmDelaySlider.value];











                _dawnSnoozeIntervalLabel.text = [NSString stringWithFormat:@"%.0f mins",  _dawnSnoozeIntervalSlider.value];
                _noonSnoozeIntervalLabel.text = [NSString stringWithFormat:@"%.0f mins",  _noonSnoozeIntervalSlider.value];
                _afternoonSnoozeIntervalLabel.text = [NSString stringWithFormat:@"%.0f mins",  _afternoonSnoozeIntervalSlider.value];
                _sunsetSnoozeIntervalLabel.text = [NSString stringWithFormat:@"%.0f mins",  _sunsetSnoozeIntervalSlider.value];
                _nightSnoozeIntervalLabel.text = [NSString stringWithFormat:@"%.0f mins",  _nightSnoozeIntervalSlider.value];

        }
             //  CFShow((__bridge CFTypeRef)(settingsDict));

    }

-(void)createSettings{
    settingsDict =   [NSDictionary dictionaryWithObjectsAndKeys:
                      [NSNumber numberWithBool:YES], @"showArabicQuranSwitch",
                      [NSNumber numberWithBool:NO], @"showArabicQuranSwitch",

                      [NSNumber numberWithBool:YES], @"dawnAlarmSwitch",
                      [NSNumber numberWithBool:NO], @"sunriseAlarmSwitch",
                      [NSNumber numberWithBool:YES], @"noonAlarmSwitch",
                      [NSNumber numberWithBool:YES], @"afternoonAlarmSwitch",
                      [NSNumber numberWithBool:YES], @"sunsetAlarmSwitch",
                      [NSNumber numberWithBool:YES], @"nightAlarmSwitch",


                      [NSNumber numberWithInt:10], @"dawnSnoozeIntervalSlider",
                      [NSNumber numberWithInt:10], @"noonSnoozeIntervalSlider",
                      [NSNumber numberWithInt:10], @"afternoonSnoozeIntervalSlider",
                      [NSNumber numberWithInt:10], @"sunsetSnoozeIntervalSlider",
                      [NSNumber numberWithInt:10], @"nightSnoozeIntervalSlider",


                      [NSNumber numberWithInt:0], @"dawnAlarmDelaySlider",
                      [NSNumber numberWithInt:0], @"noonAlarmDelaySlider",
                      [NSNumber numberWithInt:0], @"afternoonAlarmDelaySlider",
                      [NSNumber numberWithInt:0], @"sunsetAlarmDelaySlider",
                      [NSNumber numberWithInt:0], @"nightAlarmDelaySlider",


                      nil];


    settingsData = [NSKeyedArchiver archivedDataWithRootObject:settingsDict];

    [defaults setObject:settingsData forKey:(NSString *)@"SettingsKey"];
    [defaults synchronize];

}

Thanks in advance.

Answer 1

I changed this line

if (!settingsData)
    [self createSettings];

to

 settingsDict = [NSKeyedUnarchiver unarchiveObjectWithData:settingsData];

if (!settingsData || !settingsDict)
            [self createSettings];

and everything worked.