coreAnimation与viewAnimation

 

//
//  ViewController.m
//  CAAnimationAndViewAnimation
//
//  Created by ys on 15/11/22.
//  Copyright (c) 2015年 ys. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIView *blackView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
//    [self diyCACoreAnimation];
//    [self viewAnimation1];
//    [self viewAnimation2];
    [self viewAnimation3];
    
}
/**
 *  核心动画的问题在于  1.其直接操作layer层,和view层比不够面向对象.
 *                   2.layer的属性均没有改变.图层动画都是假象, 在动画执行过程中, 图层的position属性一直都没有变过
 *  因此在实际开发中,除非某些效果难以达到,一般都是使用view实现动画
 */
-(void)diyCACoreAnimation
{
    CABasicAnimation *anim = [CABasicAnimation animation];
    anim.keyPath = @"position";
    anim.toValue = [NSValue valueWithCGPoint:CGPointMake(200, 200)];
    anim.duration = 0.5;
    anim.removedOnCompletion = NO;
    anim.fillMode = kCAFillModeForwards;
    anim.delegate = self;
    [self.blackView.layer addAnimation:anim forKey:nil];

}

-(void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
{
    //diyCACoreAnimation动画结束后打印一下发现图层的position属性一直都没有变过
    NSLog(@"%@",NSStringFromCGPoint(self.blackView.layer.position));
}

-(void)viewAnimation1
{
    [UIView beginAnimations:nil context:nil];
    self.blackView.center = CGPointMake(200, 200);
    [UIView commitAnimations];
    NSLog(@"%@",NSStringFromCGPoint(self.blackView.center));
}

-(void)viewAnimation2
{
    [UIView animateWithDuration:1.0 animations:^{
        self.blackView.center = CGPointMake(200, 200);
    } completion:^(BOOL finished) {
        NSLog(@"%@",NSStringFromCGPoint(self.blackView.center));
    }];
}

-(void)viewAnimation3
{
    [UIView transitionWithView:self.blackView duration:10 options:UIViewAnimationOptionTransitionFlipFromRight animations:^{
    } completion:^(BOOL finished) {
    }];
}
@end