[英]Sorting NSArray of Dictionary containing Date as String
我想根據日期參數對以下數組進行排序,但問題出在服務器上,我沒有得到timestamp
,我將日期作為string
,任何人都可以幫忙。
NSArray *array = @[
@{@"valid":@"Y",@"mof":@"ON",@"dof":@"17-05-2019",@"rtntype":@"CODE1",@"ret_prd":@"042019"},
@{@"valid":@"Y",@"mof":@"ON",@"dof":@"19-04-2019",@"rtntype":@"CODE1",@"ret_prd":@"032019"},
@{@"valid":@"Y",@"mof":@"ON",@"dof":@"19-04-2019",@"rtntype":@"CODE2",@"ret_prd":@"032019"}
];
我嘗試應用該解決方案,但它不起作用,因為我們擁有的日期在NSString
而不是在NSDate
或NSTimeInterval
[array sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
if ([obj1 intValue] == [obj2 doubleValue])
return NSOrderedSame;
else if ([obj1 intValue] < [obj2 doubleValue])
return NSOrderedAscending;
else
return NSOrderedDescending;
}];
我假設您有一個特定的理由來保持數據原樣,而不是解析到模型類中。
在您的場景中,您可以嘗試使用以下代碼對數組進行排序:
NSArray *array = @[
@{@"valid":@"Y",@"mof":@"ON",@"dof":@"19-04-2019",@"rtntype":@"CODE1",@"ret_prd":@"032019"},
@{@"valid":@"Y",@"mof":@"ON",@"dof":@"17-05-2019",@"rtntype":@"CODE1",@"ret_prd":@"042019"},
@{@"valid":@"Y",@"mof":@"ON",@"dof":@"19-04-2019",@"rtntype":@"CODE2",@"ret_prd":@"032019"}
];
//NSDateFormatter to convert NSString to NSDate
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"dd-MM-yyyy"];
NSArray *sortedArray = [array sortedArrayUsingComparator:^NSComparisonResult(id _Nonnull obj1, id _Nonnull obj2) {
if ([obj1 isKindOfClass:[NSDictionary class]]
&& [obj2 isKindOfClass:[NSDictionary class]]) {
NSDictionary *dict1 = (NSDictionary *)obj1;
NSDictionary *dict2 = (NSDictionary *)obj2;
if ([dict1[@"dof"] isKindOfClass:[NSString class]]
&& [dict2[@"dof"] isKindOfClass:[NSString class]]) {
NSString *dof1 = (NSString *) dict1[@"dof"];
NSString *dof2 = (NSString *) dict2[@"dof"];
NSDate *date1 = [formatter dateFromString:dof1];
NSDate *date2 = [formatter dateFromString:dof2];
return [date1 compare:date2];//Update the return based on in which order you want the resulting array
}
}
return NSOrderedSame;
}];
NSLog(@"%@", sortedArray);
結果是:
(
{
dof = "19-04-2019";
mof = ON;
"ret_prd" = 032019;
rtntype = CODE1;
valid = Y;
},
{
dof = "19-04-2019";
mof = ON;
"ret_prd" = 032019;
rtntype = CODE2;
valid = Y;
},
{
dof = "17-05-2019";
mof = ON;
"ret_prd" = 042019;
rtntype = CODE1;
valid = Y;
}
)
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