Overall open-source code record (rolling images, fixed scrolling, and burst beiser curves ),

Overall open-source code record (rolling images, fixed scrolling, and burst beiser curves ),

1: implement multiple image Scrolling on the left and right

# Import <UIKit/UIKit. h> @ protocol jzarbumdelegate <NSObject> @ optional-(void) handle :( NSInteger) index; @ end @ interface jzarbumcell: UITableViewCell @ property (nonatomic, strong) NSArray * imgurlArray; /** <image URL */@ property (nonatomic, assign) id <strong> delegate;-(id) initWithStyle :( UITableViewCellStyle) style reuseIdentifier :( NSString *) reuseIdentifier frame :( CGRect) frame; @ end

# Import "jzarbumcell. h "# import" UIImageView + WebCache. h "@ interface jzarbumcell () {UIScrollView * _ scrollView;} @ end @ implementation jzarbumcell-(id) initWithStyle :( strong) style reuseIdentifier :( NSString *) reuseIdentifier frame :( CGRect) frame {self = [super initWithStyle: style reuseIdentifier: reuseIdentifier]; if (self) {// create scrollview _ scrollView = [[UIScrollView alloc] initWithFrame: CGRectMake (5, 0, frame. size. width, frame. size. height)]; _ scrollView. showsHorizontalScrollIndicator = NO; [self addSubview: _ scrollView]; // Add an image for (int I = 0; I <10; ++ I) {UIImageView * imageView = [[UIImageView alloc] initWithFrame: CGRectMake (screen_width * 2/5 + 5) * I, 5, screen_width * 2/5, frame. size. height-10)]; imageView. layer. masksToBounds = YES; imageView. layer. cornerRadius = 5; // [imageView setImage: [UIImage imageNamed: @ "lesson_default"]; imageView. tag = I + 20; optional * tap = [[UITapGestureRecognizer alloc] initWithTarget: self action: @ selector (OnTapImage :)]; [imageView addGestureRecognizer: tap]; imageView. userInteractionEnabled = YES; [_ scrollView addSubview: imageView] ;}} return self ;}- (void) awakeFromNib {// Initialization code}-(void) setSelected :( BOOL) selected animated :( BOOL) animated {[super setSelected: selected animated: animated]; // Configure the view for the selected state}-(void) setImgurlArray :( NSArray *) imgurlArray {_ scrollView. contentSize = CGSizeMake (screen_width * 2/5 + 5) * imgurlArray. count + 5, _ scrollView. frame. size. height); for (int I = 0; I 
Static NSString * cellIndentifier = @ "courseCell1"; jzarbumcell * cell = [tableView failed: cellIndentifier]; if (cell = nil) {cell = [[jzarbumcell alloc] initWithStyle: repeated reuseIdentifier: cellIndentifier frame: CGRectMake (0, 0, screen_width, 90)]; // underline UIView * lineView = [[UIView alloc] initWithFrame: CGRectMake (0, 89.5, screen_width, 0.5)]; lineView. backgroundColor = separaterColor; [cell addSubview: lineView];} cell. delegate = self; [cell setImgurlArray: _ albumImgurlArray]; return cell;
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2: The Red view and the Blue view are added to the scrollView. Drag up. The red view remains at the top of the screen, and the other continues to scroll. drag down and the red view follows.
@ Interface ViewController () <strong> @ property (weak, nonatomic) IBOutlet UIScrollView * scrollView; @ property (weak, nonatomic) IBOutlet UIView * blueView; @ property (weak, nonatomic) IBOutlet UIView * redView; @ property (weak, nonatomic) IBOutlet UIImageView * imageView; @ end @ implementation ViewController-(void) viewDidLoad {[super viewDidLoad]; self. scrollView. contentSize = CGSizeMake (0, CGRectGetMaxY (self. blueView. frame);}-(void) scrollViewDidScroll :( UIScrollView *) scrollView {CGFloat imageH = self. imageView. frame. size. height; CGFloat offsetY = scrollView. contentOffset. y; if (offsetY> = imageH) {// Add the red control to the Controller View CGRect redFrame = self. redView. frame; redFrame. origin. y = 0; self. redView. frame = redFrame; [self. view addSubview: self. redView];} else {// Add the red control to the Controller scrollView CGRe Ct redFrame = self. redView. frame; redFrame. origin. y= 140; self. redView. frame = redFrame; [self. scrollView addSubview: self. redView];} CGFloat scale = 1-(offsetY/20); scale = (scale> = 1 )? Scale: 1; self. imageView. transform = CGAffineTransformMakeScale (scale, scale);} @ end
3: Use the besell curve to draw a burst effect
# Define SCREEN_WIDTH ([UIScreen mainScreen]. bounds. size. width) @ implementation CustomView-(id) initWithFrame :( CGRect) frame {self = [super initWithFrame: frame]; if (self) {UIView * myView = [[UIView alloc] initWithFrame: CGRectMake (0, 0, SCREEN_WIDTH, 100)]; myView. backgroundColor = [UIColor redColor]; [self addSubview: myView];} return self;}-(void) drawRect :( CGRect) rect {UIColor * color = [UIColor redColor]; [color set]; // set the line color UIBezierPath * aPath = [UIBezierPath bezierPath]; aPath. lineWidth = 5.0; aPath. lineCapStyle = kCGLineCapRound; // line corner aPath. lineJoinStyle = kCGLineCapRound; // end point processing [aPath moveToPoint: CGPointMake (SCREEN_WIDTH/2-50,100)]; // left point [aPath addQuadCurveToPoint: CGPointMake (SCREEN_WIDTH/2 + 50,100) controlPoint: CGPointMake (SCREEN_WIDTH/2,150)]; // The center of the right vertex // [aPath stroke]; // draw only the line [aPath fill]; // fill}
Effect: