数组的对象是字典，把数组里的字典键值相同的再调出来，放另外的数组里

来源：互联网发布：网络调研公司编辑：程序博客网时间：2024/05/21 21:40

数组的对象是字典，把数组里的字典键值相同的再挑出来，放另外的数组里

NSMutableDictionary *dic1 = [NSMutableDictionarydictionaryWithObjectsAndKeys:@"2016-04-20",@"createtimestr",@"v1",@"key2",nil];

NSMutableDictionary *dic2 = [NSMutableDictionarydictionaryWithObjectsAndKeys:@"2016-04-20",@"createtimestr",@"v2",@"key2",nil];

NSMutableDictionary *dic3 = [NSMutableDictionarydictionaryWithObjectsAndKeys:@"2016-04-19",@"createtimestr",@"v3",@"key2",nil];

NSMutableDictionary *dic4 = [NSMutableDictionarydictionaryWithObjectsAndKeys:@"2016-04-19",@"createtimestr",@"v4",@"key2",nil];

NSMutableDictionary *dic5 = [NSMutableDictionarydictionaryWithObjectsAndKeys:@"2016-04-18",@"createtimestr",@"v5",@"key2",nil];

NSMutableArray *transitArr = [NSMutableArrayarrayWithObjects:dic1,dic2,dic3,dic4,dic5,nil];

NSMutableDictionary *dicSource = [NSMutableDictionarydictionaryWithCapacity:1];

for (int i =0; i< transitArr.count; i++)

{

[dicSource setValue:@""forKey:transitArr[i][@"createtimestr"]];

}

NSMutableArray *destinationArr;

for (int j =0; j< [dicSource allKeys].count; j++)

{

NSString *match1 = [NSStringstringWithFormat:@"SELF.createtimestr = '%@'",[dicSourceallKeys][j]];

NSPredicate *predicate1 = [NSPredicatepredicateWithFormat:match1];

destinationArr = [[NSMutableArrayalloc] initWithArray:[transitArrfilteredArrayUsingPredicate:predicate1]];

}

NSLog(@"dataSource1 = %@",destinationArr);

//最后，destinationArr里面全是2016-4-20号的对象

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