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  • 应用设置及用户默认设置

    1.设置捆绑包

    分组

    文本框设置

    安全文本框设置

    多值字段

    拨动开关设置

    滑动条设置

    子设置视图(more)

    2.读取应用中得设置

     1 - (void)viewDidAppear:(BOOL)animated
     2 {
     3     [super viewDidAppear:animated];
     4     [self refreshFields];
     5 }
     6 - (void)refreshFields
     7 {
     8     NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
     9     self.officerLabel.text = [defaults objectForKey:kOfficerKey];
    10     self.authorizationCodeLabel.text = [defaults objectForKey:kAuthorizationCodeKey];
    11     self.rankLabel.text = [defaults objectForKey:kRankKey];
    12     self.warpDriveLabel.text = [defaults boolForKey:kWarpDriverKey] ? @"Engaged" : @"Disabled";
    13     self.warpFactorLabel.text = [[defaults objectForKey:kWarpFactorKey] stringValue];
    14     self.favoriteTeaLabel.text = [defaults objectForKey:kFavoriteTeaKey];
    15     self.favoriteCaptainLabel.text = [defaults objectForKey:kFavoriteCaptainKey];
    16     self.favoriteGadgetLabel.text = [defaults objectForKey:kFavoriteGadgetKey];
    17     self.favoriteAlienLabel.text = [defaults objectForKey:kFavoriteAlienKey];
    18 }
    19 
    20 - (void)flipsideViewControllerDidFinish:(FMFlipsideViewController *)controller
    21 {
    22     //返回翻转时,加载一次.
    23     [self refreshFields];
    24     [self dismissViewControllerAnimated:YES completion:nil];
    25 }
    View Code

    3.应用中修改默认设置

     1 - (void)viewDidLoad
     2 {
     3     [super viewDidLoad];
     4     [self refreshFields];
     5 }
     6 - (void)refreshFields
     7 {
     8     NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
     9     self.engineSwitch.on = [defaults boolForKey:kWarpDriverKey];
    10     self.warpFactorSlider.value = [defaults floatForKey:kWarpFactorKey];
    11 }
    12 - (IBAction)engineSwitchTapped
    13 {
    14     NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
    15     [defaults setBool:self.engineSwitch.on forKey:kWarpDriverKey];
    16     [defaults synchronize];
    17 }
    18 - (IBAction)warpSliderTouched
    19 {
    20     NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
    21     [defaults setFloat:self.warpFactorSlider.value forKey:kWarpFactorKey];
    22     [defaults synchronize];
    23 }
    View Code

    4.注册默认值(应用不知道设置捆绑包中得默认值)

    1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    2 {
    3     NSDictionary * defaults = @{kWarpDriverKey : @YES,
    4                                 kWarpFactorKey : @5,
    5                                 kFavoriteAlienKey : @"Vulcan"};
    6     [[NSUserDefaults standardUserDefaults] registerDefaults:defaults];
    7     
    8     return YES;
    9 }
    View Code

    5.保证设置有效

     1 - (void)viewWillAppear:(BOOL)animated
     2 {
     3     [super viewWillAppear:animated];
     4     UIApplication * app = [UIApplication sharedApplication];
     5     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillEnterForeground:) name:UIApplicationWillEnterForegroundNotification object:app];
     6 }
     7 - (void)viewDidDisappear:(BOOL)animated
     8 {
     9     [super viewDidDisappear:animated];
    10     [[NSNotificationCenter defaultCenter] removeObserver:self];
    11 }
    12 - (void)applicationWillEnterForeground:(NSNotification *)notification
    13 {
    14     NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
    15     [defaults synchronize];
    16     [self refreshFields];
    17 }
    View Code
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  • 原文地址:https://www.cnblogs.com/fengmin/p/4664644.html
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