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iOS

Ericson Ortega
Ericson Ortega
3,307 Points
Posted by Ericson Ortega
Ericson Ortega
3,307 Points

how to show 6 items from array?

How can I show 6 items from an array?

Kristen Law
Kristen Law
16,244 Points

Hey Ericson! I'm not sure I understand your question. Are you trying to create an array with 6 items? Are you using Objective-C? If this corresponds to a code challenge, can you provide the link?

Ericson Ortega
Ericson Ortega
3,307 Points
Ericson Ortega
Ericson Ortega
3,307 Points

What I wanted to do is to pick 6 items from the list of available items. For example I have number from 1-50 and I wanted to pick 6 number from the list how can I do that?

This is not from the code challenge I am trying to experiment and edit the crystal ball sample app.

4 Answers

Kristen Law
Kristen Law
16,244 Points

You can either create 5 more labels like the one you currently have and set the text of each of those labels individually, or you can set the text of your current label to contain six predictions using NSString's stringWithFormat method. See below: (this is in the makePrediction method in THViewController.m)

self.predictionLabel.text = [NSString stringWithFormat:@"%@\n%@\n%@\n%@\n%@\n%@",
            [self.crystalBall randomPrediction], [self.crystalBall randomPrediction], [self.crystalBall randomPrediction],
            [self.crystalBall randomPrediction], [self.crystalBall randomPrediction], [self.crystalBall randomPrediction]];

You may have to adjust your label to view all of the text.
(Side note: There may be a better way to do this, but this gets the job done.)

Ericson Ortega
Ericson Ortega
3,307 Points
Ericson Ortega
Ericson Ortega
3,307 Points

Why didn't I think of that. Thank You.

Kristen Law
Kristen Law
16,244 Points
Kristen Law
Kristen Law
16,244 Points

Are you looking to get specific items or six random items?

If you want to retrieve a specific item you can use the objectAtIndex method on the array.

For example:

NSArray *names;
NSString *string;

names = [[NSArray alloc] initWithObjects: @"Bob", @"Tom", @"Mary", nil];
string = [names objectAtIndex: 1];   // This contains the value @"Tom"
Ericson Ortega
Ericson Ortega
3,307 Points
Ericson Ortega
Ericson Ortega
3,307 Points

Random. Also instead of displaying 1 item I wanted to display 6 items.

Kristen Law
Kristen Law
16,244 Points

What do you want to do with the 6 items? Are you storing it to six separate variables? Or do you want to create a new array that has just those six items?

Ericson Ortega
Ericson Ortega
3,307 Points
Ericson Ortega
Ericson Ortega
3,307 Points

This i my code:

```- (NSArray *) predictions { if (_predictions == nil) { _predictions = [[NSArray alloc]initWithObjects:@"It is Certain", @"1", @"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", @"10", @"11", @"12", nil]; } return _predictions; }

But instead of showing only one random item I wanted to view 6 random items.