自定义UIImageView的滑动

学习oc语言这么长时间了，对于object－c这么语言我感觉挺有意思的！真的，当你对一件事物感兴趣的时候，你发现原来认真投入到其中，确实学到不少不少东西！！今天天我就说一下如何让UIInageView像scrollView一样可以来回滑动的。是不是感觉可有趣？？嘿嘿大笑大笑
步入正题：首先创建一个MyImageView类来继承于UIImageView类继承
@interface MyImageView : UIImageView
接着在.h文件我要干的事
定义属性
CGPoint _beginPoint;//开始坐标
CGPoint _endPoint;//结束坐标
设置代理
@class MyImageView;
@protocol MyImageViewDelegate
@end
@property(nonatomic,assign)id delegate;
定义协议方法
//向左滑动的协议方法
- (void)moveToLife:(MyImageView* )imageView;
//向右滑动的协议方法
- (void)moveToRight:(MyImageView* )imageView;
对了，还有件事，那就是一定要重写初始化方法
- (id)init;
好，OK，我们来到.m文件中
第一步：
//重写初始化方法
- (id)init
{
self = [super init];
if (self) {
//把UIImageView的用户可交互性置为YES。只有UIImageView的用户可交互性默认为：NO
self.userInteractionEnabled = YES;
//设置圆角
self.layer.cornerRadius = 30;
//切割的属性
self.clipsToBounds = YES;
}
return self;
}
第二步：
//需要用到点击开始和点击结束
- (void)touchesBegan:(NSSet )touches withEvent:(UIEvent )event
{
//获取开始点坐标

//获取touch事件UITouch* touch = [touches anyObject];//根据touch事件获取点的坐标_beginPoint = [touch locationInView:self];

}
第三步：
- (void)touchesEnded:(NSSet )touches withEvent:(UIEvent )event
{
//获取结束点坐标

//获取touch事件UITouch* touch = [touches anyObject];//根据touch事件获取点的坐标_endPoint = [touch locationInView:self];//NSLog(@"_beginPoint = %@  _endPoint = %@",NSStringFromCGPoint(_beginPoint),NSStringFromCGPoint(_endPoint));//判断是向左滑动了，还是向右滑动了//注意：[self.delegate respondsToSelector:@selector(moveToLeft:)]这个保护只是可选方法if ((_beginPoint.x - _endPoint.x) > 50){    //NSLog(@"左滑动");    if ([self.delegate respondsToSelector:@selector(moveToLife:)]) {        [self.delegate moveToLife:self];    }}else if ((_beginPoint.x - _endPoint.x) < -50){    //NSLog(@"右滑动");    if ([self.delegate respondsToSelector:@selector(moveToRight:)]) {        [self.delegate moveToRight:self];    }}

}
好.OK 类写好了，我们来实现一下效果吧
首先倒入头文件

import “MyImageView.h”

go 我们来到viewDidLoad里面，创建数组，在数组里放如几张图片，创建ImageView
MyImageView* imageView = [[MyImageView alloc] init];
imageView.frame = CGRectMake(0, 0, 320, 480);
imageView.image = [_array objectAtIndex:_selectIndex];
imageView.delegate = self;
[self.view addSubview:imageView];
接下来重点来了，注意请看：

pragma mark —–MyImageViewDelegate—–

• (void)moveToLeft:(MyImageView *)imageView
  {
  NSLog(@”左”);
  _selectIndex++;
  if (_selectIndex > _array.count - 1) {
  _selectIndex–;
  //弹警告框
  UIAlertView*lertView=[[UIAlertView alloc]initWithTitle:@”警告” message:@”这是最后一张了！亲” delegate:self cancelButtonTitle:@”关闭” otherButtonTitles:nil, nil];
  [lertView show];
  return;
  }
  imageView.image = [_array objectAtIndex:_selectIndex];

  //添加动画(CATransion)
  CATransition* sition = [CATransition animation];
  // sition.fillMode = kCAFillModeForwards;
  // sition.duration = 2;
  // sition.endProgress = 0.5;
  // sition.removedOnCompletion = YES;
  sition.type = kCATransitionPush;
  sition.subtype = kCATransitionReveal;
  // sition.type = @”rippleEffect”;
  [imageView.layer addAnimation:sition forKey:@”animation”];
  // imageView.image = [_array objectAtIndex:7];
  }

• (void)moveToRight:(MyImageView *)imageView
  {
  NSLog(@”右”);
  _selectIndex–;
  if (_selectIndex < 0) {
  _selectIndex++;
  //弹警告框
  UIAlertView*lertView=[[UIAlertView alloc]initWithTitle:@”你造吗” message:@”这是最后一张啦！亲” delegate:self cancelButtonTitle:@”关闭” otherButtonTitles:nil, nil];
  [lertView show];
  return;
  }
  imageView.image = [_array objectAtIndex:_selectIndex];
  //添加动画(CATransion)
  CATransition* sition = [CATransition animation];
  sition.type = kCATransitionPush;
  sition.subtype = kCATransitionReveal;
  [imageView.layer addAnimation:sition forKey:@”animation”];
  }
  OK 以上就是我实现UIImageViwe的滑动的全部过程，希望大家可以多多点评！！！！谢谢，如有不对之处，请指出来，我虚心接受！！！！大笑大笑大笑
  请原谅我是个逗比大笑大笑大笑