NSLocale中取出国家country信息并按照国家名字排序

gistfile1.m

//NSLocale中取出国家country信息并按照国家名字排序

        NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en"];
        NSArray *countryCodes = [NSLocale ISOCountryCodes];// 所有国家编码
        NSMutableArray *countriesUnsorted = [[NSMutableArray alloc] initWithCapacity:countryCodes.count];
        
        for (NSString *countryCode in countryCodes) {
            
            NSString *displayNameString = [locale displayNameForKey:NSLocaleCountryCode value:countryCode];// 获得编码对应的国家名字
            NSDictionary *cd = @{@"name": displayNameString, @"code":countryCode};
            [countriesUnsorted addObject:cd];
            
        }
        
        NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:YES];//排序方式
        NSArray *sortDescriptors = @[sortDescriptor];
        _regionArray = [countriesUnsorted sortedArrayUsingDescriptors:sortDescriptors];