allaboutapps/a3parallaxscrollview

A UIScrollview subclass with a high performance parallax scrolling effect

a3parallaxscrollview's Issues

Problem with UIView beginAnimations

Hi,

I used your library, but when I add an animation on the UIScrollView, I have a problem with the position of the viewBackground ?

My code :

-(void)viewWillAppear:(BOOL)animated {

[super viewWillAppear:animated];

[self.viewContent setFrame:CGRectMake(0.0, 0.0, self.viewContent.frame.size.width, self.view.frame.size.height)];
[self.viewBackground setFrame:CGRectMake(0.0, 0.0, self.viewBackground.frame.size.width, self.view.frame.size.height)];

[self.scrollView setContentSize:CGSizeMake(self.viewContent.frame.size.width, self.view.frame.size.height)];
[self.scrollView addSubview:self.viewBackground withAcceleration:CGPointMake(0.5, 1.0)];
[self.scrollView addSubview:self.viewContent withAcceleration:A3DefaultAcceleration];

}

-(void)viewDidAppear:(BOOL)animated {

[super viewDidAppear:animated];

[UIView beginAnimations:@"A3Animation" context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDelay:0.5];
[UIView setAnimationDuration:1];

[self.scrollView setContentOffset:CGPointMake(self.view.frame.size.width, 0.0)];

[UIView commitAnimations];

}

Suggestion to fix autolayout crashes

replace the layoutsubvies with this:

  - (void)layoutSubviews{
        [super layoutSubviews];


    for (UIView *v in self.subviews) {
        // get acceleration
        CGPoint accelecration = [self accelerationForView:v];

        // move the view
        [v.layer setAffineTransform:CGAffineTransformMakeTranslation(self.contentOffset.x*(1.0f-accelecration.x), self.contentOffset.y*(1.0f-accelecration.y))];
         }
    }

I can do a pull request if you want?

Animated GIF in readme are invalid

Preview image are not showing up

Cocoapods support

Great work. Would love to be able to install via Cocoapods.

Add a method to get a view's adjusted contentOffset

Hi,

The contentOffset of a parallaxed SubView will be transformed depending of the acceleration.

It would be good to have a methd like this:

• (CGPoint) adjustedContentOffsetForView:(UIVIew *)view;

And it would return the adjusted ContentOffset for that view
Something like:
self.contentOffset * Acceleration (X and Y)
or just:
subview.transform. (Tx and tY)

What do you guys think?

Add screenshot to the Podspec

Hi, it would be great if you could add a screenshot to the podspec and push the update to the specs repo. The screenshot is currently displayed on http://feeds.cocoapods.org and in future it will displayed on the search of http://cocoapods.org.

To learn more about the screenshot attribute, you can check the documentation here: http://guides.cocoapods.org/syntax/podspec.html#screenshots

Swift usage example

Hello, how to use this library with SWIF langage ?