iOS开发中常用的手势---边缘手势

说明：以下方法是开发中使用的方法，有什么不对的或者好的方法，请多多指教！

此处的边缘手势是用来控制左侧抽屉视图的弹出以及收回。

添加手势 ：

1. 页面上有多个手势时需要遵循 UIGestureRecognizerDelegate 协议

 @interface HomePageViewController ()<LeftDrawerViewDelegate,UITableViewDataSource,UITableViewDelegate,SDCycleScrollViewDelegate,UIGestureRecognizerDelegate>{

     LeftDrawerViewViewController *_leftDrawerVC;

     UITableView *_tableView;

     UIView *_headeView;

     //轮播图详情展示URL数组
     NSMutableArray *_urlArr;

     BOOL _leftDrawerState;

     UIView *_maskView;

 }

2.添加边缘手势

  //添加边缘手势
     UIScreenEdgePanGestureRecognizer *screenEdgeGesOut = [[UIScreenEdgePanGestureRecognizer alloc]initWithTarget:self action:@selector(screenGesOut:)];
     screenEdgeGesOut.edges = UIRectEdgeLeft;

     [self.view addGestureRecognizer:screenEdgeGesOut];

     UIScreenEdgePanGestureRecognizer *screenEdgeGesIn = [[UIScreenEdgePanGestureRecognizer alloc]initWithTarget:self action:@selector(screenGesIn:)];
     screenEdgeGesIn.edges = UIRectEdgeRight;

     [self.view addGestureRecognizer:screenEdgeGesIn];

3.实现手势中的方法以及协议中的方法

//控制抽屉视图弹出
- (void)screenGesOut:(UIScreenEdgePanGestureRecognizer *)ges{

    UIView *tempUV = [self.view.window viewWithTag:DRAWERTAG];

    if (_leftDrawerState == NO) {

        _leftDrawerState = YES;

        _maskView = [[UIView alloc]initWithFrame:self.view.frame];
        [self.view addSubview:_maskView];
        _maskView.backgroundColor = [UIColor lightGrayColor];
        _maskView.alpha = 0.3;

        [UIView animateWithDuration:0.3 animations:^{

            CGPoint ptDrawer = tempUV.center;

            ptDrawer.x  += kSCREENWIDTH */;
            tempUV.center = ptDrawer;

            // tabbarcontroller视图动
            CGPoint ptTabbar = self.tabBarController.view.center;
            ptTabbar.x += kSCREENWIDTH */;
            self.tabBarController.view.center = ptTabbar;

        }];

    }
}
//控制抽屉视图收回
- (void)screenGesIn:(UIScreenEdgePanGestureRecognizer *)ges{
        UIView *tempUV = [self.view.window viewWithTag:DRAWERTAG];

    if(_leftDrawerState == YES){

        _leftDrawerState = NO;

        [_maskView removeFromSuperview];

        [UIView animateWithDuration:0.3 animations:^{

            CGPoint ptDrawer = tempUV.center;
            ptDrawer.x  -= kSCREENWIDTH */;
            tempUV.center = ptDrawer;

            // tabbarcontroller视图动
            CGPoint ptTabbar = self.tabBarController.view.center;
            ptTabbar.x -= kSCREENWIDTH */;
            self.tabBarController.view.center = ptTabbar;
           }];
        }
}

//页面有多个手势时 需要遵循协议-> UIGestureRecognizerDelegate 以及实现协议中的方法
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{

    return YES;
}