我正在尝试创建一个程序,用户可以使用UIPanGestureRecognizer拖动UIImageView在屏幕上移动。我已经尝试了几种不同的方法,但是无法弄清楚。我不确定是否需要创建发送者/请求者。我的理解是UIImageView需要放置在一个可以处理手势的UIView中。在我的程序中,我有一个视图控制器-AdvancedViewController1。我创建了一个名为AdvancedView1的UIView。在接口构建器中,我将AdvancedView1插入到AdvancedViewController 1中。以下是我的控制器和视图的.h和.m文件。我只包含了相关代码。请让我知道我是否接近,并如何修复我的代码。非常感谢您的帮助。
在IB中,我已将IBOutlet链接到AdvancedView1以及UIView和option1到我想要移动的UIImageView。
AdvancedViewController1.h
#import <UIKit/UIKit.h>
#import "AdvancedView1.h"
@interface AdvancedViewController1 : UIViewController {
UIWindow *window;
AdvancedView1 *advancedView1;
UIImageView * option1;
}
@property (retain) IBOutlet AdvancedView1 *advancedView1;
@property (retain) IBOutlet UIImageView *option1;
@end
在IB中,我已将IBOutlet链接到AdvancedView1以及UIView和option1到我想要移动的UIImageView。
AdvancedViewController.m
#import "AdvancedViewController1.h"
#import "AdvancedView1.h"
@implementation AdvancedViewController1
@synthesize advancedView1;
@synthesize option1
- (void)viewDidLoad {
UIGestureRecognizer *pangr = [[UIPanGestureRecognizer alloc] initWithTarget:self.advancedView1 action:@selector(pan:)];
pangr.delegate = self;
[self.advancedView1 addGestureRecognizer:pangr];
[pangr release];
[super viewDidLoad];
}
AdvancedView1.h
#import <UIKit/UIKit.h>
#import "AdvancedViewController1.h"
@class AdvancedView1;
@interface AdvancedView1 : UIView{
CGPoint* origin;
}
@property (nonatomic) CGPoint* origin;
@end
AdvancedView1.m
#import "AdvancedView1.h"
#import "AdvancedViewController1.h"
@implementation AdvancedView1;
@synthesize origin;
- (void)pan:(UIPanGestureRecognizer *) gesture
{
if ((gesture.state == UIGestureRecognizerStateChanged) ||
(gesture.state == UIGestureRecognizerStateEnded)) {
CGPoint translation = [gesture translationInView:self];
gesture.origin = CGPointMake(gesture.origin.x+translation.x, gesture.origin.y+translation.y);
[gesture setTranslation:CGPointZero inView:self];
}
[self setUserInteractionEnabled:YES]
的提示。我猜我刚刚省了一点时间。 - NSTJ