IOS 开发之UIView动画的实例详解

IOS 动画实例详解

iOS动画的实现方式多种多样，这里就只记录一下 beginAnimations:context 。

在你调用 beginAnimations:context:方法来启动一个动画后,动画并不会立即被执行,直 到你调用 UIView 类的 commitAnimations 类方法。你对一个视图对象执行的介于 beginAnimations:context:方法跟 commitAnimations方法之间的操作(例如移动)会在 commitAnimations 被执行后才会生效 。

实现效果图：

代码很简单，直接贴了，如下：

//
// ViewController.m
// Graphics
//
// Created by aaron on 14b-5-29.
// Copyright (c) 2014年 The Technology Studio. All rights reserved.
// 

#import "ViewController.h" 

@interface ViewController ()
@property(nonatomic,strong) UIImageView *imageView1;
@property(nonatomic,strong) UIImageView *imageView2; 

@end 

@implementation ViewController 

- (void)viewDidLoad
{
  [super viewDidLoad]; 

  UIImage *image = [UIImage imageNamed:@"1.png"];
  self.imageView1 = [[UIImageView alloc] initWithImage:image];
  self.imageView2 = [[UIImageView alloc] initWithImage:image];
  [self.imageView1 setFrame:CGRectMake(0.0f,
                     0.0f,
                     100.0f,
                     100.0f)]; 

  [self.imageView2 setFrame:CGRectMake(220.0f,
                     350.0f,
                     100.0f,
                     100.0f)];
  [self.view addSubview:self.imageView1];
  [self.view addSubview:self.imageView2]; 

//  [self startTopLeftImageViewAnimation];
//  [self startBottomRightViewAnimationAfterDelay:2];
  [self affineTransformScaleAnimation];
  [self affineTransformRotateAnimation]; 

} 

//imageView2 animation
-(void)startTopLeftImageViewAnimation{
  [self.imageView1 setFrame:CGRectMake(0.0f,
                     0.0f,
                     100.0f,
                     100.0f)];
  [self.imageView1 setAlpha:1.0f];
  [UIView beginAnimations:@"imageView1Animation" context:(__bridge void*)self.imageView1];
  [UIView setAnimationDuration:3.0f];
  [UIView setAnimationDelegate:self];
  [UIView setAnimationDidStopSelector:@selector(imageViewDidStop:finished:context:)];
  [self.imageView1 setFrame:CGRectMake(220.0f, 350.0f, 100.0f, 100.0f)];
  [self.imageView1 setAlpha:0.0f];
  [UIView commitAnimations];
} 

-(void)imageViewDidStop:(NSString*)paramAnimationID finished:(NSNumber*)paramFinished context:(void*)paramContext{
  NSLog(@"AnimationID = %@\n",paramAnimationID);
  UIImageView *contextImageView = (__bridge UIImageView *)(paramContext);
  NSLog(@"contextImageView = %@",contextImageView);
  [contextImageView removeFromSuperview];
} 

//imageView2 animation
-(void)startBottomRightViewAnimationAfterDelay:(CGFloat)paramDelay{
  [self.imageView2 setFrame:CGRectMake(220.0f,
                     350.0f,
                     100.0f,
                     100.0f)];
  [self.imageView2 setAlpha:1.0f];
  [UIView beginAnimations:@"imageView2Animation" context:(__bridge voidvoid *)(self.imageView2)];
  [UIView setAnimationDuration:3.0f];
  [UIView setAnimationDelay:paramDelay];
  [UIView setAnimationDelegate:self];
  [UIView setAnimationDidStopSelector:@selector(imageViewDidStop:finished:context:)];
  [self.imageView2 setFrame:CGRectMake(0.0f, 0.0f, 100.0f, 100.0f)];
  [self.imageView2 setAlpha:0.0f];
  [UIView commitAnimations];
} 

//imageView1 AffineTransformScale animation
-(void)affineTransformScaleAnimation{
  self.imageView1.center = self.view.center;
  self.imageView1.transform = CGAffineTransformIdentity;
  [UIView beginAnimations:nil context:NULL];
  [UIView setAnimationDuration:5.0f];
  self.imageView1.transform = CGAffineTransformMakeScale(2.0f, 2.0f);
  [self.imageView1 setAlpha:0.0f];
  [UIView commitAnimations];
} 

//imageView2 AffineTransformRotate animation
-(void)affineTransformRotateAnimation{
  self.imageView2.center = self.view.center;
  [UIView beginAnimations:@"clockwiseAnimation" context:NULL];
  [UIView setAnimationDuration:5.0f];
  [UIView setAnimationDelegate:self];
  [UIView setAnimationDidStopSelector:@selector(clockwiseRotationStopped:finished:context:)];
  self.imageView2.transform = CGAffineTransformMakeRotation(90.0f*M_PI/180.f);
  [UIView commitAnimations];
} 

-(void)clockwiseRotationStopped:(NSString*)paramAnimationID finished:(NSNumber*)paramFinished context:(void*)paramContext{
  [UIView beginAnimations:@"counterclockwiseAnimation" context:NULL];
  [UIView setAnimationDuration:5.0f];
  self.imageView2.transform = CGAffineTransformIdentity;
  [UIView commitAnimations];
} 

@end

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