UIPanGestureRecognizer和UISwipeGestureRecognizer冲突?

当实现拖手势（UIPanGestureRecognizer）后将不能响应左右划（UISwipeGestureRecognizer）事件，事件会被拖手势栏截，所以左右划和拖手势只能选其一.

    但是即需要拖手势还需要左右划手势呢?

    我想到了一个简单方案.在UIPanGestureRecognizer基础上做一个轻滑手势.在一定的时间范围内滑动,视为左右划手势,反之为拖手势.

看代码~

- (void)viewDidLoad {

    [superviewDidLoad];

    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizeralloc]
initWithTarget:selfaction:@selector(panEvent:)];

    [self.viewaddGestureRecognizer:pan];

}

#pragma mark - 创建一个定时器

- (void)createTimer:(void(^)(float indexSec))block {

    _timerSource =dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER,0,
0,dispatch_queue_create("timerSource",0));

    //
时间间隔

    double interval =
0.05f * NSEC_PER_SEC;

    dispatch_source_set_timer(_timerSource,dispatch_time(DISPATCH_TIME_NOW,0),
interval,0/*最小误差*/);

    

    __block float sec =0;

    dispatch_source_set_event_handler(_timerSource, ^{

        sec += 0.5f;

        dispatch_async(dispatch_get_main_queue(), ^{

//            NSLog(@"sec = %f",sec);

            block(sec);

        });

    });

    dispatch_resume(_timerSource);

}

#pragma mark - 取消定时器

- (void)cancelTimer {

    if (_timerSource) {

        dispatch_source_cancel(_timerSource);

        _timerSource =
nil;

    }

}

- (void)panEvent:(UIPanGestureRecognizer *)recognizer {

    if (!_timerSource) {

        _firstTime_x = -1;

        _firstTime_y = -1;

        //
定时器 在0.1秒内滑动视为轻滑

        [self createTimer:^(float indexSec) {

            _indexSec = indexSec;

        }];

    }

    

   
//  获取手指拖拽的时候,平移的值

    CGPoint translation = [recognizer
translationInView:recognizer.view];

    

   
// 大于0.1秒滑动时视为拖手势

    if (_indexSec >1) {

        NSLog(@"拖 --->  %@",NSStringFromCGPoint(translation));

        myLabel.text = [NSStringstringWithFormat:@"拖->point
= %@",NSStringFromCGPoint(translation)];

        if (recognizer.state ==UIGestureRecognizerStateEnded)
{

            [self
cancelTimer];

             _indexSec =
0;

        }

    } else {

        //
在0.1秒滑动结束后视为左右划

        if (recognizer.state ==UIGestureRecognizerStateEnded)
{

            [self
cancelTimer];

            CGFloat lastTime_x =
fabs(translation.x);

            CGFloat lastTime_y =
fabs(translation.y);

            

            if (lastTime_y -
_firstTime_y > 50 && lastTime_x -
_firstTime_x < 100) {

                NSLog(@"上下滑无效");

                myLabel.text =@"上下滑无效";

            } else
if (lastTime_y - _firstTime_y <
100 && lastTime_x - _firstTime_x >
5) {

                if (translation.x >0) {

                    NSLog(@"右");

                    myLabel.text =@"右滑";

                } else {

                    NSLog(@"左");

                    myLabel.text =@"左滑";

                }

            }

            

            _indexSec =
0;

        }

        if (_firstTime_x == -1) {

            _firstTime_x =
fabs(translation.x);

        }

        if (_firstTime_y == -1) {

            _firstTime_y =
fabs(translation.y);

        }

    }

}

Demo 

有点不好的是

在拖拽的前0.1秒是不做事的