将带有选择器的参数传递给自定义对象的新.xib

Question

I have a tableview that will load a new .xib when pressed. The issue is, I need to pass a custom object over to the new .xib. So far, I have:

-(UITableViewCell *)doTestCellForTableView:(UITableView *)tableView atIndexPath:(NSIndexPath *)indexPath {

 //some other code for current view
 TestObj *testobj = [[TestObj alloc]init];

 if(shouldGo){
   cell.userInteractionEnabled = YES;
   UITapGestureRecognizer *tapped = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(loadTestView:)];
   tapped.numberOfTapsRequired = 1;
   [cell addGestureRecognizer:tapped];
 }

And in that method:

-(void)loadTestView:(TestObj *)withTestObj{

TestViewController *newView =
[[TestViewController alloc] init];
//Set the property of type TestObj
newView.testobjprop = withTestObj;

[self presentViewController:newView animated:YES completion:nil];
}

It throws NSInvalidArgumentException. How can I make it to where the selector will send "testobj" that was initialized in the tableview method so I can access it there?

The new .xib loads in just fine if I comment out "newView.testobjprop = withTestObj;" in the loadTestView method. So I assume the issue lies there, and it is a matter of how to pass an object from one .xib to another.

Answer 1

The argument from -(void)loadTestView:(TestObj *)withTestObj is UIGestureRecognizer type so that's why you get NSInvalidArgumentException .

If you change it to -(void)loadTestView:(UITapGestureRecognizer *)withTestObj it will be the normal behavior.

That's why you need to use didSelectRow:AtIndexPath so you can pass the correct value to the viewcontroller .

Here you aren't using TestObj *testobj = [[TestObj alloc]init]; at all.