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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