CODEWITHSUNDEEP
iosobjective-cnsmutablearraynsdictionarynspredicate
Mihir Oza
Mihir Oza

Reputation: 2796

App crashes when I use NSPredicate to filter my Array for my UITableView

I am using NSPredicate for search record from the tableView.
Below is my code which I have implemented. 

-(void)updateSearchArray:(NSString *)searchText {
    if(searchText.length==0) {
        isFilter=NO;
    } else {
        isFilter=YES;
        filteredUsers = [[NSMutableArray alloc]init];
        NSPredicate *resultPredicate;
        resultPredicate = [NSPredicate predicateWithFormat:@"displayname contains[c] %@", searchText];
        NSLog(@"%@",[tableData valueForKey:@"displayname"]);
        filteredUsers = [[tableData valueForKey:@"displayname"] filteredArrayUsingPredicate:resultPredicate];
        [self.tblMemberList reloadData];

    }
}

My tableData: 

Printing description of self->tableData:
<__NSArrayI 0x28116ba60>(
{
    displayname = Mihir;
    email = "[email protected]";
    uuid = "user-97ae136";
},
{
    displayname = OzaMihir;
    email = "[email protected]";
    uuid = "user-0c97f16";
}
)

My app crashes when I use above code.

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ valueForUndefinedKey:]: this class is not key value coding-compliant for the key displayname.'

Thanks in advance.

Upvotes: 0

Views: 417

Answers (2)

HardikS
HardikS

Reputation: 714

Try the below code.

filteredUsers = [temp filteredArrayUsingPredicate: [NSPredicate predicateWithFormat:@"displayname CONTAINS[c] %@", searchText]];
[self.tblMemberList reloadData];

And you are passing an array of displayname in your code to filter it. If you want to perform the operation only on array of displayname array. then you can do it like below.

//It will perform operation/search name only on an array of `displayname`
filteredUsers = [[tableData valueForKey:@"displayname"] filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"SELF CONTAINS[c] %@", searchText]]; 
[self.tblMemberList reloadData];

I hope it will helpful to you.

Upvotes: 1

Anbu.Karthik
Anbu.Karthik

Reputation: 82759

your tableData contains array of dictionary, so in here search occur direct in the array not a string, so use as like 

    isFilter=YES;
    filteredUsers = [[NSMutableArray alloc]init];
   filteredUsers = [tableData filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(displayname contains[c] %@)", searchText]];
    [self.tblMemberList reloadData];

instead of 

NSPredicate *resultPredicate;
    resultPredicate = [NSPredicate predicateWithFormat:@"displayname contains[c] %@", searchText];
    NSLog(@"%@",[tableData valueForKey:@"displayname"]);
    filteredUsers = [[tableData valueForKey:@"displayname"] filteredArrayUsingPredicate:resultPredicate];

Upvotes: 1

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