NSUserDefaults设置捆绑包列表 [英] NSUserDefaults Settings Bundle Plist

问题描述

我有一个应用程序，它使用我应该存储在NSUserDefaults设置根Plist中的url值，从appDelegate的appDidFinishLoading方法中加载文件时检查文件:

I have an app that checks for a file upon load from the appDelegate's appDidFinishLoading method using a url value that I supposedly store in the NSUserDefaults Settings Root Plist:

NSString *pathStr = [[NSBundle mainBundle] bundlePath];
NSString *settingsBundlePath = [pathStr stringByAppendingPathComponent:@"Settings.bundle"];
NSString *finalPath = [settingsBundlePath stringByAppendingPathComponent:@"Root.plist"];
NSDictionary *settingsDict = [NSDictionary dictionaryWithContentsOfFile:finalPath];
NSArray *prefSpecifierArray = [settingsDict objectForKey:@"PreferenceSpecifiers"];

NSDictionary *prefItem;
for (prefItem in prefSpecifierArray){
    NSString *keyValueStr = [prefItem objectForKey:@"Key"];
    if ([keyValueStr isEqualToString:kFirstNameKey]){
        nsUserDefURL = [prefItem objectForKey:@"DefaultValue"];
    }
        if ([keyValueStr isEqualToString:kSecondNameKey]){
        NSLog(@"You are using local data:%@",[prefItem objectForKey:@"DefaultValue"]);
    }
}
NSLog(@" this is the url == %@", nsUserDefURL);

// since no default values have been set (i.e. no preferences file created), create it here     
NSDictionary *appDefaults = [NSDictionary dictionaryWithObjectsAndKeys:nsUserDefURL,kFirstNameKey,@"YES",kSecondNameKey,nil];
[[NSUserDefaults standardUserDefaults] registerDefaults:appDefaults];
[[NSUserDefaults standardUserDefaults] synchronize];

带有一些静态信息:

NSString *kFirstNameKey = @"url";
NSString *kSecondNameKey = @"Web DataSource";

当我NSLog nsUserDefURL时，我仍然在设置plist中获得默认值.我进入了应用程序的设置(不知道我可以在模拟器中这样做)，并且修改了url字段中的值，但是我仍然在设置根目录中获得了test2.xml值，该值是默认的占位符值plist.

When I NSLog the nsUserDefURL, i still get the default value in the settings plist. I went into the settings for the app (didn't know i could do so in the simulator) and I modified the value in the url field, but i STILL get the test2.xml value that is the default placeholder value in the settings root plist.

这里是plist:

还是设置捆绑包在Xcode模拟器上不起作用?

Or is it that the settings bundle doesn't work on the Xcode simulator?

推荐答案

结果是我错过了这一行:

Turns out I was missing this line:

nsUserDefURL = [[NSUserDefaults standardUserDefaults] stringForKey:kFirstNameKey];  

但这只会在每次启动时读取默认值.它不会在应用程序设置中保存用户修改的值.为什么没有保存该值?

But this only reads the default value each launch. It won't save the user modified value in the app settings. Why is that value not being saved?

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