How to send touch event to a UIView on iOS

I have added a tap gesture on a view. When the view tapped, an internal method called and an alert popped up.

Now I want to send touch event to simulate finger touch on this view. How could I do this?

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Thanks all.

I think I should describe question clearly. I'm work on ReplayKit on iOS12. We can add RPSystemBroadcastPickerView to our custom view. In my project, click a button, RPSystemBroadcastPickerView init and add in my view, tap on RPSystemBroadcastPickerView, select items, and click Start Broadcast.

What I want to do is that When I click button, it jump to the select items interface automatically. Just like sending touch event to RPSystemBroadcastPickerView after button clicked.

UIButton *btnInPicker = nil;
for( UIView *_subView in self.broadcastPicker.subviews) {
    if( [_subView isKindOfClass:[UIButton class]] ) {
        btnInPicker = (UIButton *)_subView;
        break;
    }
}


if(btnInPicker) {
    [btnInPicker sendActionsForControlEvents:UIControlEventTouchDown];
}

but it has a issue: Unbalanced calls to begin/end appearance transitions for