xcode - multiple instances of custom view - ios

Question

I've created a custom UIViewController with storyboard and this is the class:
.h file:
#import <UIKit/UIKit.h>
#interface PlayerViewController : UIViewController
#property (weak, nonatomic) IBOutlet UILabel *PlayerNumber;
#property (weak, nonatomic) IBOutlet UIImageView *PlayerImage;
#property (weak, nonatomic) IBOutlet UILabel *PlayerNameLabel;
-(void)setPlayerName:(NSString*)PlayerNameString;
#end
.m file:
#import "PlayerViewController.h"
#interface PlayerViewController ()
#end
#implementation PlayerViewController
#synthesize PlayerImage,PlayerNameLabel,PlayerNumber;
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
-(void)setPlayerName:(NSString *)PlayerNameString{
self.PlayerNameLabel.text=PlayerNameString;
}
#end
from main view I create 2 instance of PlayerViewController in order to display 2 custom views:
- (void)viewDidLoad {
[super viewDidLoad];
[self DrawPlayerWithTag:1];
[self DrawPlayerWithTag:2];
}
- (void)DrawPlayerWithTag:(int)PlayerTag{
PlayerViewController *myPlayerViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"PlayerViewController"];
UIView *myPlayerView=myPlayerViewController.view;
myPlayerView.tag=PlayerTag;
myPlayerView.frame=CGRectMake(0, 0, 100, 100);
myPlayerView.center = CGPointMake(self.view.frame.size.width / 2,
self.view.frame.size.height / 2);
UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(doDoubleTap)];
doubleTap.numberOfTapsRequired = 2;
[myPlayerView addGestureRecognizer:doubleTap];
[self.view addSubview:myPlayerView];
[myPlayerViewController setPlayerName:#"NameA"];
}
It seems to work.
But, if I want to change the PlayerName, how can refer to view1 rather then view2 after a double tap event, and use the method setPlayerName?
Thanks a lot for your answer!

Answer 1

Change the callback method
UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(doDoubleTap:)];
You can get the tag of the view like this:
-(void)doDoubleTap:(UITapGestureRecognizer *)gesture{
NSLog(#"%ld", gesture.view.tag);
}
You can keep your code and invoke setPlayerName with this post Get to UIViewController from UIView?
But, I suggest this way:
set target for gesture is myPlayerViewController
UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:myPlayerViewController action:#selector(doDoubleTap:)];
Keep ref of myPlayerViewController in "main view" by an array like:
[arrPlayerView addObject:myPlayerViewController]; /// keep pointing to myPlayerViewController, so it isn't released.
Place (void)doDoubleTap:(UITapGestureRecognizer *)gesture in PlayerViewController