<extracting data from value failed> in NSDictionary

问题

I am stuck at a point when I convert data from web services to NSDictionary. But while accessing on console in debug mode it returns , while when i bind the values of dictionary with view it works perfectly. Below is the code:-

NSDictionary *responseDict =  [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&e];

and at console i am using po [dictName valueForKey:@"Status"] as well as po [dictName objectForKey:@"Status"]. Followed few steps but does not work for me 1. setting Optimization level to none already in this mode. 2.Edit scheme to debug mode already in this mode.

回答1:

I meet this problem when I try to get information from Info.plist. Finally I use a string exchange.

NSString *plistPath = [[NSBundle mainBundle] pathForResource:@"Info"ofType:@"plist"];
    NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithContentsOfFile:plistPath];
    NSString *version = [data objectForKey:@"CFBundleShortVersionString"];
    self.labVersion.text = [NSString stringWithFormat:@"(%@)", version];

来源：https://stackoverflow.com/questions/40924336/extracting-data-from-value-failed-in-nsdictionary