Question

I have a UILabel in Mainclass, now I want to Assign it text by Subclass function. My question detail code is available here link Now I want that when I click on any Cell of my UITableview (which is my Subclass) its text assign to UILabel in Mainview. my Code is below which I tried so for

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
NSString *cellText = selectedCell.textLabel.text;
NSLog(@"MY row Text:%@",cellText);

// Now here I don't know how we can pass this text to UILabel which is in my mainclass

}

My Below image also helpful for understanding my problem

Answer 1

You can pass label on to the subview class when you create it.

In the main view class declare:

@property (nonatomic, strong) UILabel *mainLabel;
// or if no ARC
// @property (nonatomic, retain) UILabel *mainLabel;

Then on the .h for the subview, declare:

@property (nonatomic, weak) UILabel *myAccessToMainLabel;
// or if no ARC
// @property (nonatomic, assign) UILabel *myAccessToMainLabel;

When the subview is created, assign the main view’s Label to the subview’s myAccessToMainLabel. Then assign the label in the subview code. You can always pass around properties in Objective-c.

Edit:
When you create the subview, assign mainLabel to subview’s reference iVar from the code that create it.For example, if the main create the subview then:

MySubViewClass *mySubView = [[MySubViewClass alloc] initWithNib:@"MySubViewClass" ...];
// or any variety of init
mySubview.myAccessToMainLabel = mainLabel;