跟随效果图
随手势移动
不跟随效果图
一下就跑丢了
注意需要调用一下
setTranslation: inView:方法
#import "PanViewController.h"
@interface PanViewController()
{
UIView *_testView;
}
@end
@implementation PanViewController
- (instancetype)init
{
self = [super init];
if (self)
{
self.navigationItem.title = @"Pan";
self.edgesForExtendedLayout = UIRectEdgeNone;
_testView = [[UIView alloc] init];
_testView.backgroundColor = [UIColor orangeColor];
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];
[_testView addGestureRecognizer:panGesture];
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
_testView.frame = CGRectMake(50, 50, 150, 150);
[self.view addSubview:_testView];
}
- (void)pan:(UIPanGestureRecognizer *)gesture
{
CGPoint translatePoint = [gesture translationInView:self.view];
_testView.center = CGPointMake(_testView.center.x + translatePoint.x, _testView.center.y + translatePoint.y);
[gesture setTranslation:CGPointZero inView:self.view];
if (gesture.state == UIGestureRecognizerStatePossible)
{
NSLog(@"possible");
}
else if (gesture.state == UIGestureRecognizerStateBegan)
{
NSLog(@"began");
}
else if (gesture.state == UIGestureRecognizerStateChanged)
{
NSLog(@"changed");
}
else if (gesture.state == UIGestureRecognizerStateEnded)
{
NSLog(@"ended");
}
}
@end
