如何使用ObjectC向下拖动以消除模态

Question

I want to dismiss a modal view with dragging down photo like twitter app's photo views.

I found same issue , but it written in Swift.

I need Object-C version.

Answer 1

You can use UISwipeGestureRecognizer (Down) to achieve the behaviour.

Add gesture to the model view using below code:

UISwipeGestureRecognizer *downGestureRecognizer = [[UISwipeGestureRecognizer   alloc] initWithTarget:self action:@selector(downGestureHandler:)];
[gestureRecognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];
[self.view addGestureRecognizer: downGestureRecognizer];

The method to dismiss the model view:

-(void) downGestureHandler:(UISwipeGestureRecognizer *)recognizer {

        //Code to dismiss model view with animation
}