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#import "ViewController.h"@interface ViewController (){//设置垃圾桶是否为空变量，NO为满，YES为空BOOL boolTrashEmptyFlag;
}
//定义两张图和它们容器的属性
@property (strong,nonatomic) UIImage *imageTrashFull;
@property (strong,nonatomic) UIImage *imageTrashEmpty;
@property (strong,nonatomic) UIImageView *imageView;@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];//界面设置CGRect screen = [[UIScreen mainScreen] bounds];CGFloat imageViewWidth = 128;CGFloat imageViewHeight = 128;CGFloat imageViewTopView = 148;CGRect frame = CGRectMake((screen.size.width - imageViewWidth)/2 , imageViewTopView, imageViewWidth, imageViewHeight);self.imageView = [[UIImageView alloc] initWithFrame:frame];self.imageTrashFull = [UIImage imageNamed:@"Blend Trash Full.png"];self.imageTrashEmpty = [UIImage imageNamed:@"Blend Trash Empty"];self.imageView.image = self.imageTrashFull;[self.view addSubview:self.imageView];//新建手势识别器UIPanGestureRecognizer *recognizer = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(foundPan:)];//设置手势识别器的属性1允许移动位置2最小长按时间recognizer.minimumNumberOfTouches = 1;recognizer.maximumNumberOfTouches = 1;//将手势识别器关联到imageView[self.imageView addGestureRecognizer:recognizer];//将imageView开启用户事件self.imageView.userInteractionEnabled = YES;
}-(void)foundPan:(UIGestureRecognizer*)sender{if (sender.state != UIGestureRecognizerStateEnded && sender.state != UIGestureRecognizerStateFailed) {CGPoint location = [sender locationInView:sender.view.superview];sender.view.center = location;}
}- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];}@end
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