iPhone - 读取Setting.bundle返回错误的值

Question

我创建了一个随Root.plist文件和本地化目录en.lproj一起提供的Settings.bundle.

我编辑了Root.plist并添加了几个我想要的应用程序设置.

当我从iPhone删除应用程序并安装它并第一次运行时,我读取的所有设置都返回错误的值.例如:

highQualityFlag = [[[NSUserDefaults standardUserDefaults] stringForKey:@"qualityFlag"] boolValue];

即使设置默认值为YES,该标志也为NO.

如果我在设置上更改了某些内容并再次运行,则所有后续运行都会给出正确的值(??)

我该如何解决？

谢谢

Answer 1

试试这个:

- (void)registerDefaultsFromSettingsBundle 
{
    NSString *settingsBundle = [[NSBundle mainBundle] pathForResource:@"Settings" ofType:@"bundle"];
    if(!settingsBundle) 
    {
        //NSLog(@"Could not find Settings.bundle");
        return;
    }

    NSDictionary *settings = [NSDictionary dictionaryWithContentsOfFile:[settingsBundle stringByAppendingPathComponent:@"Root.plist"]];
    NSArray *preferences = [settings objectForKey:@"PreferenceSpecifiers"];

    NSMutableDictionary *defaultsToRegister = [[NSMutableDictionary alloc] initWithCapacity:[preferences count]];
    for(NSDictionary *prefSpecification in preferences) 
    {
        NSString *key = [prefSpecification objectForKey:@"Key"];
        if(key) 
        {
            [defaultsToRegister setObject:[prefSpecification objectForKey:@"DefaultValue"] forKey:key];
        }
    }

    [[NSUserDefaults standardUserDefaults] registerDefaults:defaultsToRegister];
    [defaultsToRegister release];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{    
    [self registerDefaultsFromSettingsBundle];

    window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
        [window makeKeyAndVisible];
    return YES;
}