Question

我正在将密钥加载到ios中的pickercontrol中。我的问题是我无法按字母顺序排列键。

代码来自UnSorted：Nordfyn，Svendborg，Nyborg，Langeland，Assens，Kerteminde，Middelfart，Odense，Ærø，Faaborg-Midtfyn，分类：Ærø，Svendborg，Nyborg，Langeland，Kerteminde，Nordfyn，Middelfart， Assens，Odense，Faaborg-Midtfyn。

NSBundle *KSbundle = [NSBundle mainBundle];
NSURL *KSplistURL = [KSbundle URLForResource:@"KommunerStedtillæg" 
                           withExtension:@"plist"];
NSDictionary *KSdictionary = [NSDictionary 
                            dictionaryWithContentsOfURL:KSplistURL];


NSArray *KSkeys = [[KSdictionary allKeys] sortedArrayUsingSelector:@selector(compare:)];


NSMutableDictionary *KSnewDict = [NSMutableDictionary dictionary];

for (id key in KSkeys)
    [KSnewDict setObject:[KSdictionary objectForKey:key] forKey:key];

kommunerKeys = [KSnewDict allKeys];
kommunerValues = [KSnewDict allValues];

Answer 1

看起来好像你看kommunerKeys，但是词典中键的顺序是未定义的（参见Link）。在添加之前对它们进行排序会对您有所帮助。

Answer 2

NSArray *stringsArray = [NSArray arrayWithObjects:
                                 @"string 1",
                                 @"String 21",
                                 @"string 12",
                                 @"String 11",
                                 @"String 02", nil];

static NSStringCompareOptions comparisonOptions = NSCaseInsensitiveSearch | NSNumericSearch |
        NSWidthInsensitiveSearch | NSForcedOrderingSearch;
NSLocale *currentLocale = [NSLocale currentLocale];

NSComparator finderSortBlock = ^(id string1, id string2) {

    NSRange string1Range = NSMakeRange(0, [string1 length]);
    return [string1 compare:string2 options:comparisonOptions range:string1Range locale:currentLocale];
};

NSArray *finderSortArray = [stringsArray sortedArrayUsingComparator:finderSortBlock];
NSLog(@"finderSortArray: %@", finderSortArray);

在此处http://www.developers-life.com/sorting-by-block.html

添加您需要的选项

Answer 3

你可能正在寻找这个：

 [array sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];

仅仅比较是不够的。

在IOS中对键进行排序

3 个答案: