How to disable BottomSheetDialogFragment dragging

Question

How to disable BottomSheetDialogFragment dragging by finger?

I saw similar questions, but they\'re all about BottomSheet not BottomSheetD

Answer 1

My version. It works perfectly.

Edit 09/04/2020: Replaced depreciated setBottomSheetCallback() with addBottomSheetCallback()

class FragMenuBDrawer : BottomSheetDialogFragment() {

    ...

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val dialog = super.onCreateDialog(savedInstanceState) as BottomSheetDialog

        dialog.setOnShowListener {
            val bottomSheet = (it as BottomSheetDialog).findViewById<View>(com.google.android.material.R.id.design_bottom_sheet) as FrameLayout?
            val behavior = BottomSheetBehavior.from(bottomSheet!!)
            behavior.state = BottomSheetBehavior.STATE_EXPANDED

            behavior.addBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
                override fun onStateChanged(bottomSheet: View, newState: Int) {
                    if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                        behavior.state = BottomSheetBehavior.STATE_EXPANDED
                    }
                }

                override fun onSlide(bottomSheet: View, slideOffset: Float) {}
            })
        }

        // Do something with your dialog like setContentView() or whatever
        return dialog
    }

    ...
}

Answer 2

This works for me sir

override fun onCreateDialog(savedInstanceState : Bundle?) : Dialog {
    val dialog = super.onCreateDialog(savedInstanceState);
    dialog.setOnShowListener {
        val bottomSheetDialog : BottomSheetDialog = it as BottomSheetDialog;
        var bottomSheetBehavior = BottomSheetBehavior<FrameLayout>();
        bottomSheetBehavior = bottomSheetDialog.getBehavior()
        bottomSheetBehavior.setDraggable(false);
    }
    return dialog }

Answer 3

If you want to disable BottomSheetDialog dragging, try to set setCancelable(false).

Answer 4

This is the Kotlin version of azizbekian's answer since someone asked about using data binding

@SuppressLint("RestrictedApi")
override fun setupDialog(d: Dialog?, style: Int) {
    super.setupDialog(d, style)
    dialogExampleBinding = DataBindingUtil
        .inflate(LayoutInflater.from(context), R.layout.dialogExample, null, false) //This is for data binding only
    d?.setContentView(R.layout.dialogExample)

    val myDialog:BottomSheetDialog = d as BottomSheetDialog
    val dField = myDialog.javaClass.getDeclaredField("behavior") //This is the correct name of the variable in the BottomSheetDialog class
    dField.isAccessible = true
    val behavior = dField.get(d) as BottomSheetBehavior<*>
    behavior.setBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
        override fun onStateChanged(bottomSheet: View, newState: Int) {
            if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                behavior.state = BottomSheetBehavior.STATE_EXPANDED
            }
        }

        override fun onSlide(bottomSheet: View, slideOffset: Float) {}
    })
}

Answer 5

This is my solution:

setOnShowListener {
            Handler().post {
                val bottomSheet = findViewById<View>(R.id.design_bottom_sheet) as? FrameLayout
                bottomSheet?.let {
                    BottomSheetBehavior.from(it).state = STATE_EXPANDED

                    // Disable dialog dragging behavior which causes issue on EditText scroll!
                    BottomSheetBehavior.from(it).isDraggable = false
                }

            }
        }

Answer 6

I get the answer here, I just added content.setLayoutParams(new CoordinatorLayout.LayoutParams(CoordinatorLayout.LayoutParams.MATCH_PARENT, CoordinatorLayout.LayoutParams.MATCH_PARENT)); to make Bottom Sheet Dialog Fragment height is match_parent and make it soft when it showed.

@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    final Dialog d = super.onCreateDialog(savedInstanceState);
    // view hierarchy is inflated after dialog is shown
    d.setOnShowListener(new DialogInterface.OnShowListener() {
        @Override
        public void onShow(DialogInterface dialogInterface) {
            //this disables outside touch
            d.getWindow().findViewById(R.id.touch_outside).setOnClickListener(null);
            //this prevents dragging behavior
            View content = d.getWindow().findViewById(R.id.design_bottom_sheet);
            content.setLayoutParams(new CoordinatorLayout.LayoutParams(CoordinatorLayout.LayoutParams.MATCH_PARENT, CoordinatorLayout.LayoutParams.MATCH_PARENT));
            ((CoordinatorLayout.LayoutParams) content.getLayoutParams()).setBehavior(null);
        }
    });
    return d;
}