Solved

Connect picker view to my second View in interface builder (XCode)

Posted on 2010-11-09
1
1,904 Views
Last Modified: 2012-05-10
I have an Xcode project where I'm having two different views. On my second view I want to change some settings. Therefore I added a picker view (you know the wheel where values can be selected). I have tried to connect a picker to an application with a single view. Thats no problem at all.

I created these two connections:

A connection from the dataSource to the File's owner
A connection from the delegate to the File's owner.


When I try to connect the picker the same way in the second view of an application with two views it doesn't work with the dataSource set to Files owner. If I connect this way the application simply will not start.

How should I connect the dataSource of my picker in the second view in interface builder to be able to see the data in the picker?

I'm almost certain that the connection is the problem.

I attached code from the Filtering class (both .h and .m file). This class should be used to add data to the picker but it does not work. I also added a screenshot of how the structure is in Interface builder.

I really hope you can help me.
#import "Filtrering.h"

@implementation Filtrering

- (void)viewDidLoad { // When the view loads, run this action.
	[super viewDidLoad]; // This NEEDS to be here or the application will not work!
	
	
	pickerViewArray = [[NSMutableArray alloc] init]; // This will allocate tableViewArray.
	for(int i = 1; i <= 20; i ++) { // Set 'i' to every number from 1 and 20.
		NSString *myString = [NSString stringWithFormat:@"%d%%", i]; // Create a new string that will display the number 'i' followed by a percent sign.
		[pickerViewArray addObject:myString]; // Add the string to the tableViewArray. 
	}
}

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thePickerView { // This method needs to be used. It asks how many columns will be used in the UIPickerView
	return 1; // We only need one column so we will return 1.
}

- (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component { // This method also needs to be used. This asks how many rows the UIPickerView will have.
	return [pickerViewArray count]; // We will need the amount of rows that we used in the pickerViewArray, so we will return the count of the array.
}

- (NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component { // This method asks for what the title or label of each row will be.
	return [pickerViewArray objectAtIndex:row]; // We will set a new row for every string used in the array.
}

@end

Open in new window

#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>

@interface Filtrering : UIViewController <UIPickerViewDataSource, UIPickerViewDelegate>
{
	IBOutlet UIPickerView * tipPicker;
	NSMutableArray * pickerViewArray;
}

@end

Open in new window

interface-builder.jpg
0
Comment
Question by:154115
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 

Accepted Solution

by:
154115 earned 0 total points
ID: 34115165
I found out myself. It was because I didn't use the main class in my project. Now it works perfectly.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A short article about problems I had with the new location API and permissions in Marshmallow
Computer science students often experience many of the same frustrations when going through their engineering courses. This article presents seven tips I found useful when completing a bachelors and masters degree in computing which I believe may he…
Simple Linear Regression
Introduction to Processes

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question