Detect when the drawer is closed while using MMDrawerController

Question

Is there any way we can detect when the drawer is closed by dragging the center container? I wish to perform certain actions everytime the drawer is closed..

score 2 · Answer 1 · answered Sep 11 '15 at 08:31

2

You can use

-(void)setGestureCompletionBlock:(void(^)(MMDrawerController * drawerController, UIGestureRecognizer * gesture))gestureCompletionBlock;

to set a callback block to be notified when a gesture is completed. In this block, query the drawerController to know what is currently open.

/**
 Sets a callback to be called when a gesture has been completed.

 This block is called when a gesture action has been completed. You can query the `openSide` of the `drawerController` to determine what the new state of the drawer is.

 @param gestureCompletionBlock A block object to be called that allows the implementer be notified when a gesture action has been completed.
 */

answered Sep 11 '15 at 08:31

Quentin Hayot

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in my App Delegate? Or in any View Controller that I am using the Drawer in? – genaks Sep 11 '15 at 08:35
1

Every time you will call this method, the callback will be replaced. So AppDelegate sounds good ;) – Quentin Hayot Sep 11 '15 at 08:37
Any idea what the Swift version would be? – genaks Sep 11 '15 at 08:39
I'm not familiar with Swift :( – Quentin Hayot Sep 11 '15 at 08:42
Ok.. Thanks for your help :) – genaks Sep 11 '15 at 08:47
Can you explain please how can I use this in the App delegate? – Ne AS Jul 03 '17 at 15:41

score 2 · Answer 2 · answered Jun 12 '17 at 07:34

I think we can use following helper methods to detect MMDrawerController state.

For Objective-C

- (BOOL)isLeftOpen {
    return (self.mm_drawerController.openSide == MMDrawerSideLeft);
}

- (BOOL)isRightOpen {
    return (self.mm_drawerController.openSide == MMDrawerSideRight);
}

For Swift-3.x

func isLeftOpen() -> Bool {
    return mm_drawerController.openSide == .left
}

func isRightOpen() -> Bool {
    return mm_drawerController.openSide == .right
}.

Source: https://github.com/mutualmobile/MMDrawerController/issues/337

score 0 · Answer 3 · answered Dec 07 '15 at 12:05

Using Quentin's answer you can check for the drawer width on gesture completion as

    [self setGestureCompletionBlock:^(MMDrawerController *drawerController, UIGestureRecognizer *gesture) {
    if (drawerController.visibleLeftDrawerWidth == 0.0f) {
        // "perform certain actions"
    }
}];

score 0 · Answer 4 · answered Jul 18 '17 at 10:57

You can get a callback whenever the drawer will be open and closed.

drawerController?.setDrawerVisualStateBlock({ (drawer, drawerSide, percentVisible) in
                print(percentVisible)
                if percentVisible > 0 && self.blackView.superview == nil {
                    //drawer opened
                                }
                                if percentVisible == 0 {
                                    //drawer closed
                                }
            })

Note: percentVisible will be 0 when drawer will be closed and 1 when the drawer will be opened.

Detect when the drawer is closed while using MMDrawerController

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