CODEWITHSUNDEEP
iosobjective-cuiviewcontroller
th3us3r
th3us3r

Reputation: 39

How to draw View Controller from the bottom

I am trying to develop an app in Xcode. I am new in Objective C programming but so far I did OK. Today I got my first problem. I am trying to draw a transparent VC (View Controller) from the bottom up but I do not know how I can accomplish this. I know that drawing in iPhone begins from 0,0 coordinates from top left corner going right and down. Is there a way to kind of cheat and draw the VC from the bottom to top 70% covering the screen, just like the tools menu when swipe up on iPhone screen in iOS 7.x.x

Thanks in advance.

Upvotes: 0

Views: 332

Answers (1)

hackerinheels
hackerinheels

Reputation: 1141

Heres one solution:

  1. Create the view as a subview of the main view in this controller.

    self.rolloutView = [[UIView alloc]initWithFrame:CGRectMake(0, [[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width, heightYouWant)];

  2. When the user takes the action, call this function

    -(void)toggleView:(id)sender
{   
    __block CGRect frame = self.rolloutView.frame;
     // Check if the frame's origin.y is at the bottom of the screen
    if(self.rolloutView.frame.origin.y == [[UIScreen mainScreen] bounds].size.height){
        // if it is, reduce it by the height of the view you eventually want
         frame.origin.y = [[UIScreen mainScreen] bounds].size.height-heightYouWant ;
    }
    else{
        // else push it down again
        frame.size.height = [[UIScreen mainScreen] bounds].size.height;
    }
    [UIView animateWithDuration:.3
             animations:^{
                 self.rolloutView.frame = frame;
             }
                 completion:nil];
}

I have not compiled the code but it should give you the idea on what i am suggesting

Upvotes: 1

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