代碼示例:
這是臨時寫的，代碼粗糙，只希望能有所幫助吧！
//
// WWCRootViewController.m
// TestCAOrUIViewAnimationApp7-30
//
// Created by Whitney.c on 15/7/30.
// Copyright (c) 2015年 ZhongShan Sun union Medical Technology Co. Ltd. All rights reserved.
//
#import "WWCRootViewController.h"
@interface WWCRootViewController ()
@end
@implementation WWCRootViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
NSLog(@"viewDidLoad ... ");
self.view.backgroundColor = [UIColor whiteColor];
//[self loadSelfLayoutSubViews];
}
-(void)loadView
{
[super loadView];
[self loadSelfLayoutSubViews];
}
-(void)loadSelfLayoutSubViews
{
// 加入購物車的按鈕
btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.frame = CGRectMake(20, 80, 100, 35);
[btn setTitle:@"$900.99" forState:UIControlStateNormal];
[btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
[btn addTarget:self action:@selector(addGodToMarket:) forControlEvents:UIControlEventTouchUpInside];
[btn setBackgroundColor:[UIColor grayColor]];
[btn.titleLabel setFont:[UIFont systemFontOfSize:12]];
[self.view addSubview:btn];
// 購物車
cartImgV = [[UIImageView alloc] init];
cartImgV.image = [UIImage imageNamed:@"cart_empty"];
cartImgV.backgroundColor = [UIColor clearColor];
cartImgV.frame = CGRectMake(250, 500, 35, 35);
[self.view addSubview:cartImgV];
}
-(void)addGodToMarket:(UIButton*)bt
{
NSString *price = bt.titleLabel.text ;
NSLog(@"price : %@" ,price);
// 加入購物車動畫效果
CALayer *transitionLayer = [[CALayer alloc] init];
[CATransaction begin];
[CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];
transitionLayer.opacity = 1.0;
transitionLayer.contents = bt.titleLabel.layer.contents;
transitionLayer.frame = [[UIApplication sharedApplication].keyWindow convertRect:bt.titleLabel.bounds fromView:bt.titleLabel];
[[UIApplication sharedApplication].keyWindow.layer addSublayer:transitionLayer];
[CATransaction commit]; // 提交動畫
// 路徑曲線
UIBezierPath *movePath = [UIBezierPath bezierPath];
[movePath moveToPoint:transitionLayer.position];
CGPoint toPoint = CGPointMake(cartImgV.center.x, cartImgV.center.y);
[movePath addQuadCurveToPoint:toPoint controlPoint:CGPointMake(cartImgV.center.x
, transitionLayer.position.x-100)];
//關鍵幀
CAKeyframeAnimation *positionAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
positionAnimation.path = movePath.CGPath;
positionAnimation.removedOnCompletion = YES;
CAAnimationGroup *group = [CAAnimationGroup animation];
group.beginTime = CACurrentMediaTime();
group.duration = 0.6;
group.animations = [NSArray arrayWithObjects:positionAnimation, nil];
group.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
group.delegate = self;
group.fillMode = kCAFillModeForwards;
group.removedOnCompletion = NO;
group.autoreverses = NO;
[transitionLayer addAnimation:group forKey:@"opacity"];
[self performSelector:@selector(addCartFinished:) withObject:transitionLayer afterDelay:0.6f];
}
-(void)addCartFinished:(CALayer*)transitionLayer
{
transitionLayer.opacity = 0; // 透明
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
