SWRevealViewController close rear view when tapping front view

问题

I am using SWRevealViewController in order to implement a side nav menu in my app. I would like to make it so that the front view cannot be interacted with when the rear view is opened, except that when the user taps the front view, the rear view will close and the front view can be interacted with again. I have these two SWRevealViewController delegate methods that currently remove interaction from the front view.

- (void)revealController:(SWRevealViewController *)revealController willMoveToPosition:    (FrontViewPosition)position {
    if(position == FrontViewPositionLeft) {
        self.view.userInteractionEnabled = YES;
    } else {
        self.view.userInteractionEnabled = NO;
    }
}

- (void)revealController:(SWRevealViewController *)revealController didMoveToPosition:    (FrontViewPosition)position {
    if(position == FrontViewPositionLeft) {
        self.view.userInteractionEnabled = YES;
    } else {
        self.view.userInteractionEnabled = NO;
    }
}

However this doesn't cause the rear view to close when the front view is tapped. Any help would be greatly appreciated, thanks!

回答1:

If you are using SWIFT, you can do something like this, in your frontViewController:

override func viewDidLoad() {
    super.viewDidLoad()

    if self.revealViewController() != nil {

        self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
        self.view.addGestureRecognizer(self.revealViewController().tapGestureRecognizer())
    }

}

Code works for TAP and PAN gesture.

回答2:

In ViewDidLoad of your frontViewController you need to add a UITapGestureRecognizer

SWRevealViewController *revealController = [self revealViewController];
UITapGestureRecognizer *tap = [revealController tapGestureRecognizer];
tap.delegate = self;

[myView addGestureRecognizer:tap];

This should cause the rear view to close when the front view is tapped which is SWRevealViewController's default behaviour.

回答3:

EDIT: Change UIView's autoresizingMask to suit Swift 2, thanks to Marroc's comment

This is Swift-SWRevealViewController 2.x version of @avdyushin's answer:

func revealController(revealController: SWRevealViewController!, willMoveToPosition position: FrontViewPosition) {
    let tagId = 4207868622

    if revealController.frontViewPosition == FrontViewPosition.Right {
        let lock = self.view.viewWithTag(tagId)
        UIView.animateWithDuration(0.25, animations: {
                lock?.alpha = 0
            }, completion: {(finished: Bool) in
                lock?.removeFromSuperview()
            }
        )
        lock?.removeFromSuperview()
    } else if revealController.frontViewPosition == FrontViewPosition.Left {
        let lock = UIView(frame: self.view.bounds)
        lock.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
        lock.tag = tagId
        lock.alpha = 0
        lock.backgroundColor = UIColor.blackColor()
        lock.addGestureRecognizer(UITapGestureRecognizer(target: self.revealViewController(), action: "revealToggle:"))
        self.view.addSubview(lock)
        UIView.animateWithDuration(0.75, animations: {
                lock.alpha = 0.333
            }
        )
    }
}

回答4:

Subclass of SWRevealViewController.
Implement revealController:willMoveToPosition: of SWRevealViewControllerDelegate.
Set full screen view on front view controller to override all touches.
Add tap gesture recognizer to hide menu.

Sample with nice animation:

- (void)revealController:(SWRevealViewController *)revealController willMoveToPosition:(FrontViewPosition)position;
{
    static NSInteger tagLockView = 4207868622;
    if (revealController.frontViewPosition == FrontViewPositionRight) {
        UIView *lock = [self.frontViewController.view viewWithTag:tagLockView];
        [UIView animateWithDuration:0.25 animations:^{
            lock.alpha = 0;
        } completion:^(BOOL finished) {
            [lock removeFromSuperview];
        }];
    } else if (revealController.frontViewPosition == FrontViewPositionLeft) {
        UIView *lock = [[UIView alloc] initWithFrame:self.frontViewController.view.bounds];
        lock.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
        lock.tag = tagLockView;
        lock.backgroundColor = [UIColor blackColor];
        lock.alpha = 0;
        [lock addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(revealToggle:)]];
        [self.frontViewController.view addSubview:lock];
        [UIView animateWithDuration:0.75 animations:^{
            lock.alpha = 0.333;
        }];
    }
}

This solution for old version 1.x SWRevealViewController.

回答5:

Consider this simple solution, works perfect

private let DimmingViewTag = 10001

extension UIViewController: SWRevealViewControllerDelegate {    

    func setupMenuGestureRecognizer() {

        revealViewController().delegate = self

        view.addGestureRecognizer(revealViewController().panGestureRecognizer())
        view.addGestureRecognizer(revealViewController().tapGestureRecognizer())
    }

    //MARK: - SWRevealViewControllerDelegate

    public func revealController(revealController: SWRevealViewController!, didMoveToPosition position: FrontViewPosition) {

        if case .Right = position {

            let dimmingView = UIView(frame: view.frame)
            dimmingView.tag = DimmingViewTag

            view.addSubview(dimmingView)
            view.bringSubviewToFront(dimmingView)

        } else {
            view.viewWithTag(DimmingViewTag)?.removeFromSuperview()
        }
    }
}

Simple usage in UIViewController:

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)

    setupMenuGestureRecognizer()
}

回答6:

Put below code on menu view controller its works for me

@interface SidebarTableViewController() {
    UIView* coverView;
}

- (void)viewWillDisappear:(BOOL)animated {
    [coverView removeFromSuperview];
    //[self.revealViewController.frontViewController.view setUserInteractionEnabled:YES];
    // get your window screen size
}

- (void)viewWillAppear:(BOOL)animated {
    // get your window screen size
    CGRect screenRect = [[UIScreen mainScreen] bounds];
    //create a new view with the same size
    coverView = [[UIView alloc] initWithFrame:screenRect];
    // change the background color to black and the opacity to 0.6
    coverView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.6];
    // add this new view to your main view
    [self.revealViewController.frontViewController.view addSubview:coverView];
    // [self.revealViewController.frontViewController.view setUserInteractionEnabled:NO];
}

回答7:

Thanks to mixth & avdyushin for there mighty help. Here's the Swift 4 version derived from there answer to save your couple of hours:

extension UIViewController: SWRevealViewControllerDelegate {

func setupMenuGestureRecognizer() {

    revealViewController().delegate = self

    view.addGestureRecognizer(revealViewController().panGestureRecognizer())
    view.addGestureRecognizer(revealViewController().tapGestureRecognizer())
}

//MARK: - SWRevealViewControllerDelegate
public func revealController(_ revealController: SWRevealViewController!, willMoveTo position: FrontViewPosition) {
    let tagId = 112151
    print("revealController delegate called")
    if revealController.frontViewPosition == FrontViewPosition.right {
        let lock = self.view.viewWithTag(tagId)
        UIView.animate(withDuration: 0.25, animations: {
            lock?.alpha = 0
        }, completion: {(finished: Bool) in
            lock?.removeFromSuperview()
        }
        )
        lock?.removeFromSuperview()
    } else if revealController.frontViewPosition == FrontViewPosition.left {
        let lock = UIView(frame: self.view.bounds)
        lock.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        lock.tag = tagId
        lock.alpha = 0
        lock.backgroundColor = UIColor.black
        lock.addGestureRecognizer(UITapGestureRecognizer(target: self.revealViewController(), action: #selector(SWRevealViewController.revealToggle(_:))))
        self.view.addSubview(lock)
        UIView.animate(withDuration: 0.75, animations: {
            lock.alpha = 0.333
        }
        )
    }
}

}

Now call this function setupMenuGestureRecognizer from viewDidLoad of your rear view controller.

Or you can also implement SWRevealViewControllerDelegate directly to your rear view controller class and use the SWRevealViewControllerDelegate function in the class itself.

回答8:

I used the tapGestureRecognizer but there are still some problems. I tried this and worked great!

Define class:

@interface IgnoreView : UIView

@property (nonatomic, assign) BOOL shouldAllTouchesBeForMe;

@end

Implement:

@implementation IgnoreView

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
    if( self.shouldAllTouchesBeForMe ){
        return self;
    }
    return [super hitTest:point withEvent:event];
}

@end

Then make your View class in Interface Builder of class IgnoreView

In your ViewController, then, do:

in - viewDidLoad

self.revealViewController.delegate = self;
[self.view addGestureRecognizer:self.revealViewController.tapGestureRecognizer];

the implement in your viewcontroller also:

- (void)revealController:(SWRevealViewController *)revealController didMoveToPosition:(FrontViewPosition)position
{
    IgnoreView *i = (id)self.view;
    i.shouldAllTouchesBeForMe = position == FrontViewPositionRight;
}

And you're all set!

回答9:

On your Menu view controller, add this:

-(void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];

    [self.revealViewController.frontViewController.view setUserInteractionEnabled:NO];
}

-(void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];

    [self.revealViewController.frontViewController.view setUserInteractionEnabled:YES];
}

Then on your Menu Item View Controller, add this on viewDidLoad:

SWRevealViewController *revealController = [self revealViewController];
[revealController tapGestureRecognizer];

Also check out my answer here. It addresses the problem on front view interaction (plus a slide gesture).

来源：https://stackoverflow.com/questions/22275911/swrevealviewcontroller-close-rear-view-when-tapping-front-view

标签

ios

objective-c

swrevealviewcontroller