Howto achieve animation like store house in ios? - ios

Question

Hi all i have got to implement storehouse like animation in my project. I found a third party library but sorry it is in swift. Please help me with objective c code
Refference link for animation is
Animation Store house

Answer 1

StoreTableView.h
#import <UIKit/UIKit.h>
#protocol StoreHouseTableViewTransform
#property (nonatomic) CGFloat scaleValue;
-(void)transFormForCell:(CGFloat)scaleFactor;
#end
#interface StoreTableView : UITableView
#end
StoreTableView.m
#import "StoreTableView.h"
#implementation StoreTableView
-(void)layoutSubviews{
[super layoutSubviews];
[self transformTable];
}
- (void )transformTable{
for (NSIndexPath *indexpath in self.indexPathsForVisibleRows) {
UITableViewCell *cell = [self cellForRowAtIndexPath:indexpath];
if ([cell conformsToProtocol:#protocol(StoreHouseTableViewTransform)]) {
UITableViewCell <StoreHouseTableViewTransform> *vc = (UITableViewCell<StoreHouseTableViewTransform> *)cell;
CGFloat distCenter=[self computeDistance:indexpath];
[vc transFormForCell:[self computeScale:distCenter withMinScale:vc.scaleValue]];
}
}
}
-(CGFloat )computeDistance:(NSIndexPath *)indexpath{
CGRect rect=[self rectForRowAtIndexPath:indexpath];
CGFloat cellCenter=rect.origin.y + rect.size.height/2;
CGFloat cellContentCenter=self.contentOffset.y + self.bounds.size.height/2;
return fabs(cellCenter - cellContentCenter);
}
-(CGFloat )computeScale:(CGFloat)distanceOfCenter withMinScale:(CGFloat)scaleFactor{
return (1.0-scaleFactor) * distanceOfCenter / self.bounds.size.height;
}
#end
StoreTableViewCell.h
#import <UIKit/UIKit.h>
#import "StoreTableView.h"
#interface StoreTableViewCell : UITableViewCell<StoreHouseTableViewTransform>{
CGFloat minimumScale;
}
#property (weak, nonatomic) IBOutlet UIView *backView;
#property (weak, nonatomic) IBOutlet UIImageView *scaleImage;
#end
StoreTableViewCell.m
#import "StoreTableViewCell.h"
#implementation StoreTableViewCell
#synthesize scaleValue;
-(void )prepareForReuse{
[super prepareForReuse ];
minimumScale = 0.85;
self.backView.transform = CGAffineTransformMakeScale(minimumScale, minimumScale);
}
#pragma mark delegate
-(void)transFormForCell:(CGFloat)scaleFactor{
self.backView.transform = CGAffineTransformMakeScale(1.0 - scaleFactor, 1.0 - scaleFactor);
}
#end
This is objective-C implementation of StoreHouse Animation
Subclass your TableView with StoreTableView and Cell with StoreTableViewCell.
I think so this will help you
play with scaleFactor

Answer 2

I spent about 4 hours trying to enable Swift in my Xcode Objc-based project. My "myproject-Swift.h" file was created successfully, but my Xcode didn't see my Swift-classes. So I decided to create a new Xcode Objc-based project and finally I found the right answer! Hope this post will help someone :-)
Step by step swift integration for Xcode Objc-based project:
1.Create new *.swift file (in Xcode) or add it by using Finder
2.Add swift bridging empty header if Xcode have not done this before (see 4 below)
3.Implement your Swift class by using #objc attribute:
import UIKit
#objc class Hello : NSObject {
func sayHello () {
println("Hi there!")
}
}
4.Open Build Settings and check this parameters:
Product Module Name : myproject
Defines Module : YES
Embedded Content Contains Swift : YES
Install Objective-C Compatibility Header : YES
Objective-C Bridging Header : $(SRCROOT)/Sources/SwiftBridging.h
5. Import header (which is auto generated by Xcode) in your *.m file
#import "myproject-Swift.h"
6. Clean and rebuild your Xcode project
Profit

Answer 3

They have open sourced their animation engine. Built on top of CADisplayLink, they recommend this mainly if you're looking to do physics based animations that interact with gestures.
https://github.com/storehouse/Advance