IOS开发之——图片的动画(16)

一 概述

本文介绍与图片相关的动画:

  • 位移动画:上下左右移动
  • 缩放动画:放大与缩小
  • 旋转动画:正旋转与反选择

二 效果图

三 代码

3.1 OC模式下(ViewController.m)

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#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIButton *iconButton;
@property (nonatomic,assign) CGFloat delta;

@end
typedef enum
{
moveDirTop=11,
moveDirLeft=12,
moveDirBottom=13,
moveDirRight=14

}moveDirect;
#define moveDelta 20;
@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
}

- (IBAction)zoomWithFrame:(UIButton *)button
{
CGRect frame=self.iconButton.frame;
if(button.tag)
{
frame.size.width+=20;
frame.size.height+=20;
NSLog(@"放大");
}else{
frame.size.width-=20;
frame.size.height-=20;
NSLog(@"缩小");
}
self.iconButton.frame=frame;
}
//缩放按钮功能
- (IBAction)zoom:(UIButton *)button
{
CGFloat scale=(button.tag)?1.2:0.8;
self.iconButton.transform=CGAffineTransformScale(self.iconButton.transform, scale, scale);

}
//旋转按钮功能
- (IBAction)rotate:(UIButton *)button
{
CGFloat angle=(button.tag)? -M_PI_4 : M_PI_4;
self.iconButton.transform=CGAffineTransformRotate(self.iconButton.transform, angle);
}


- (IBAction)move:(UIButton *)button
{
CGFloat dx=0,dy=0;
switch (button.tag) {
case moveDirTop:
dy=-20;
break;
case moveDirLeft:
dx=-20;
break;
case moveDirBottom:
dy=20;
break;
case moveDirRight:
dx=20;
break;
default:
break;
}
self.iconButton.transform=CGAffineTransformTranslate(self.iconButton.transform, dx, dy);

}
- (IBAction)demo:(UIButton *)button
{
CGRect frame= self.iconButton.frame;
switch (button.tag) {
case moveDirTop:
frame.origin.y-=moveDelta;
break;
case moveDirLeft:
frame.origin.x-=moveDelta;
break;
case moveDirBottom:
frame.origin.y+=moveDelta;
break;
case moveDirRight:
frame.origin.x+=moveDelta;
break;
default:
break;
}
self.iconButton.frame=frame;
}
@end