数组排序（按数组中字典的某一键值对）

时间：2015-06-18 16:57:53 阅读：141 评论：0 收藏：0 [点我收藏+]

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1。普通数组排序：

NSMutableArray *arr = [NSMutableArray arrayWithObjects:@"0",@"8",@"6",@"1",nil];

NSArray *sortedArray = [arr sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2){

if ([obj1 intValue] > [obj2 intValue]){

return NSOrderedDescending;

}

if ([obj1 intValue] < [obj2 intValue]){

return NSOrderedAscending;

}

return NSOrderedSame;

}];

NSLog(@"排序后的数组：%@",sortedArray);

2.数组中有字典的排序：

NSMutableArray *myMutableArr = [[[NSMutableArray alloc] init] autorelease];

NSDictionary *dicOne = [NSDictionary dictionaryWithObjectsAndKeys:@"1",@"price",@"2",@"number", nil];

NSDictionary *dicTWo = [NSDictionary dictionaryWithObjectsAndKeys:@"6",@"price",@"5",@"number", nil];

NSDictionary *dicThree = [NSDictionary dictionaryWithObjectsAndKeys:@"3",@"price",@"1",@"number", nil];

NSDictionary *dicFour = [NSDictionary dictionaryWithObjectsAndKeys:@"4",@"price",@"3",@"number", nil];

[myMutableArr addObject:dicOne];

[myMutableArr addObject:dicTWo];

[myMutableArr addObject:dicThree];

[myMutableArr addObject:dicFour];

NSArray *sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"price" ascending:YES]];

[myMutableArr sortUsingDescriptors:sortDescriptors];

NSLog(@"排序后的数组%@",myMutableArr);

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原文地址：http://www.cnblogs.com/moyazi/p/4586123.html

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