屏蔽响应事件继续向父视图传递的category

屏蔽响应事件继续向父视图传递的category

这篇教程是上一篇教程的升级版，将复杂的代码封装成了category，更便于使用:)

效果：

源码：

UIGestureRecognizer+EnvetInCurrentView.h 与 UIGestureRecognizer+EnvetInCurrentView.m

//
//  UIGestureRecognizer+EnvetInCurrentView.h
//  BackgroundView
//
//  Created by YouXianMing on 14-10-3.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//

#import <UIKit/UIKit.h>

typedef void (^CurrentViewBlock)(UIGestureRecognizer *gesture);
typedef void (^OtherViewBlock)(UIGestureRecognizer *gesture);

@interface UIGestureRecognizer (EnvetInCurrentView)

- (void)eventInCurrentView:(CurrentViewBlock)currentViewBlock
               inOtherView:(OtherViewBlock)otherViewBlock;

@end

//
//  UIGestureRecognizer+EnvetInCurrentView.m
//  BackgroundView
//
//  Created by YouXianMing on 14-10-3.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//

#import "UIGestureRecognizer+EnvetInCurrentView.h"

@implementation UIGestureRecognizer (EnvetInCurrentView)

- (void)eventInCurrentView:(CurrentViewBlock)currentViewBlock
               inOtherView:(OtherViewBlock)otherViewBlock
{
    UIEvent *event = [[UIEvent alloc] init];
    CGPoint location = [self locationInView:self.view];

    //check actually view you hit via hitTest
    UIView *view = [self.view hitTest:location withEvent:event];

    if ([view.gestureRecognizers containsObject:self]) {
        currentViewBlock(self);
    } else {
        otherViewBlock(self);
    }
}

@end

使用时候的源码：

//
//  ViewController.m
//  BackgroundView
//
//  Created by YouXianMing on 14-10-3.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "UIView+BackgroundView.h"
#import "UIGestureRecognizer+EnvetInCurrentView.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // 添加手势
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                                          action:@selector(handleSingleTap:)];
    [self.view addGestureRecognizer:tap];

    UILabel *label      = [[UILabel alloc] initWithFrame:self.view.bounds];
    label.text          = @"Y.X. Touch Test";
    label.textAlignment = NSTextAlignmentCenter;
    label.font          = [UIFont fontWithName:@"HelveticaNeue-Thin" size:40.f];
    label.textColor     = [UIColor redColor];
    [self.view addSubview:label];
}

- (void)handleSingleTap:(UIGestureRecognizer *)gestureRecognizer
{
    [gestureRecognizer eventInCurrentView:^(UIGestureRecognizer *gesture) {
        NSLog(@"当前视图事件");
        // 显示
        [self.view showBackgroundViewAndConfig:^(BackgroundView *configView) {
            configView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.6];
            configView.startDuration = 0.4f;
            configView.endDuration   = 0.4f;
        }];

        // 延迟3s执行
        [self performSelector:@selector(affterDelay)
                   withObject:nil
                   afterDelay:3.f];
    } inOtherView:^(UIGestureRecognizer *gesture) {
        NSLog(@"其他视图的事件");
    }];
}

- (void)affterDelay
{
    // 隐藏
    [self.view removeBackgroundView];
}

@end

以下是需要注意的地方：