【iOS】array 排序

【環境：ios7】

日期、字串排序，可在array中放入各種參數比較，相關參閱說明檔
NSSortDescriptor Class Reference

 
[array sortedArrayUsingSelector:@selector(compare:)] //升冪排序

 
//降冪
NSSortDescriptor *SortDescriptor=[NSSortDescriptor sortDescriptorWithKey:Nil ascending:NO selector:@selector(compare:)];
[Array sortedArrayUsingDescriptors:[NSArray arrayWithObject:SortDescriptor]];

 
//自定
NSSortDescriptor *sortDescriptor=[[NSSortDescriptor alloc]initWithKey:@"排序名稱" ascending:isAscending];
NSArray *sortDescriptors=[NSArray arrayWithObject:sortDescriptor];
NSArray *Array=[arr sortedArrayUsingDescriptors:sortDescriptors]; 

 
//block
NSArray *sortedArray;
sortedArray = [drinkDetails sortedArrayUsingComparator:^NSComparisonResult(id a, id b) {
    NSDate *first = [(Person*)a birthDate];
    NSDate *second = [(Person*)b birthDate];
    return [first compare:second];
}];

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