Disable or Prevent Multitouch in Activity

Disable or prevent multitouch in Activity

The best way to work around this scenario is to use a ViewGroup and implement the onInterceptTouchEvent method to manually route the touch events as you see fit.

This was originally answered here:
Android multitouch! hack anyone?

Code implementing this solution (found in the comments section of the answer to the above question) is found here:
http://pastebin.com/hiE1aTCw

Disabling multitouch in android

you can use android:splitMotionEvents or android:windowEnableSplitTouch

Disabling multi-touch on my app

To prevent this you should turn off splitMotionEvents or windowEnableSplitTouch attribute inside ViewGroup were buttons are located.

android:splitMotionEvents="false"

How to disable multi touch on entire app or just a view using SwiftUI?

No SwiftUI solution but you can use UIKit solution in SwiftUI app.

Use UIView.appearance(). This will disable multi-touch on the whole app.

@main
struct SwiftUIDEMO: App {
    init() {
        UIView.appearance().isMultipleTouchEnabled = false
        UIView.appearance().isExclusiveTouch = true
    }
    
    // Body View
}

Or you can also use UIViewController touch event and maange .isUserInteractionEnabled.

extension UIViewController {
    open override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesMoved(touches, with: event)
        self.view.isUserInteractionEnabled = true
    }
    open override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesEnded(touches, with: event)
        self.view.isUserInteractionEnabled = true
    }
    open override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesEnded(touches, with: event)
        self.view.isUserInteractionEnabled = true
    }
}

How to disable multitouch?

If you want only one button to respond to touches at a time, you need to set exclusiveTouch for that button, rather than for the parent view. Alternatively, you could disable the other buttons when a button gets the "Touch Down" event.

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Here's an example of the latter, which worked better in my testing. Setting exclusiveTouch for the buttons kind-of worked, but led to some interesting problems when you moved your finger off the edge of a button, rather than just clicking it.

You need to have outlets in your controller hooked up to each button, and have the "Touch Down", "Touch Up Inside", and "Touch Up Outside" events hooked to the proper methods in your controller.

#import "multibuttonsViewController.h"

@implementation multibuttonsViewController

// hook this up to "Touch Down" for each button
- (IBAction) pressed: (id) sender
{
    if (sender == one)
    {
        two.enabled = false;
        three.enabled = false;
        [label setText: @"One"]; // or whatever you want to do
    }
    else if (sender == two)
    {
        one.enabled = false;
        three.enabled = false;
        [label setText: @"Two"];  // or whatever you want to do
    }
    else
    {
        one.enabled = false;
        two.enabled = false;
        [label setText: @"Three"];  // or whatever you want to do
    }
}

// hook this up to "Touch Up Inside" and "Touch Up Outside"
- (IBAction) released: (id) sender
{
    one.enabled = true;
    two.enabled = true;
    three.enabled = true;
}

@end

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