Go to another view by clicking a button in Custom Cell - ios

Question

I created the custom cell (XIB) as the subclass of UICollectionViewCell and the cell has a button in it. When I click a button, I want to go to another view with some data on that, and could go back to the original view by clicking a button as well. I've search for that and found something like "segue" or "modal" but I can't do it initially from my custom cell.
Is there any way to do this? Any help would be very thankful.

Answer 1

So what you want to do, since it seems like UICollectionView works the same as UITableView, is make a subclass of UICollectionViewCell that contains a protocol to send actions, like pressing a button, to a view controller from a different view. In this case, a different view being the UICollectionViewCell.
Adding a Protocol to a UICollectionViewCell
Add a new Cocoa Touch Class called UICustomCollectionViewCell with subclass of UICollectionViewCell. And include the interface builder file
header file UICustomCollectionViewCell.h
#protocol UICustomCollectionViewCellDelegate;
#interface UICustomCollectionViewCell : UICollectionViewCell
#property ( nonatomic, retain) IBOutlet UIButton *button;
- (IBAction)pressButton:(id)sender;
#property ( assign) id< UICustomCollectionViewCellDelegate> delegate;
#end
#protocol UICustomCollectionViewCellDelegate <NSObject>
#optional
- (void)customCollectionViewCell:(UICustomCollectionViewCell *)cell pressedButton:(UIButton *)button;
#end
implementation file UICustomCollectionViewCell.m
#implementation UICustomCollectionViewCell
#synthesize delegate;
- (IBAction)pressButton:(id)sender {
if ([delegate respondsToSelector: #selector( customCollectionViewCell:pressedButton:)])
[delegate customCollectionViewCell: self pressedButton: sender];
}
#end
xib file UICustomCollectionViewCell.xib
make sure the connections from the UICustomCollectionViewCell are connected to the button from the Connections Inspector:
button
-pressButton:
Finally, using this class in your project
Import the class as well as the delegate:
#import "UICustomCollectionViewCell.h"
#interface ViewController () < UICustomCollectionViewCellDelegate>
#end
In this following code, you will use the UICustomCollectionViewCell class instead of UICollectionViewCell:
UICustomCollectionViewCell *cell;
...
[cell setDelegate: self];
...
return cell;
And now the action, or method, that is called when the button is pressed:
- (void)customCollectionViewCell:(UICustomCollectionViewCell *)cell pressedButton:(UIButton *)button {
//action will be here when the button is pressed
}
If you want to find out what indexPath this cell was from:
[collectionView indexPathForCell: cell];

Answer 2

You can't/shouldn't perform navigation jobs in the cell, navigation is not in the cells domain.
What you can try is
1) Use a delegate, setup a delegate and wire it up to the button action, the controller hosting the tableview/collection view can set itself up as the delegate and listen to any events. This controller should be in charge of pushing a new view to the stack using any method you desire.
2) If you hate delegates but love blocks, you can setup a callback block on the cell, its actions could be setup in the cellForRowAtIndex: method in the controller.
Noticed a pattern here? both the above methods are delegating the task from the cell to the controller.
If all fails, just implement didSelectItemAtIndexPath: and stick with it.

Answer 3

Did you try with didSelect method?
- (void)collectionView:(UICollectionView *)collectionView
didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
YourNewViewControllerClass *someViewController = [storyboard instantiateViewControllerWithIdentifier:#"YourNewVCID"];
[self presentViewController:someViewController
animated:YES
completion:nil];
}

Answer 4

Easiest way would be to implement cellForRow.. method, set a tag for your cell/button and react basing on that tag (eg. indexPath.row).

Answer 5

1.custom your button
NouMapButton.h
#import <Foundation/Foundation.h>
#interface NouMapButton : UIButton
#property (nonatomic, readwrite, retain) NSObject *dataObj;
#end
NouMapButton.m
#import "NouMapButton.h"
#implementation NouMapButton
#end
set your button data and target in
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
btn01.dataObj = YOUR_DATA;
[btn01 addTarget:self action:#selector(map:) forControlEvents:UIControlEventTouchUpInside];
then you can get button custom dataObj in sender.dataObj
-(void)map:(NouMapButton *)sender{
MapViewController *nextView = [[MapViewController alloc] init];
nextView.dataObj = sender.dataObj;
//TODO....
}