It can be now no longer relevant, but I will leave it here:
import android.content.Context
import android.util.AttributeSet
import androidx.coordinatorlayout.widget.CoordinatorLayout
import android.view.MotionEvent
import android.view.View
import com.google.android.material.bottomsheet.BottomSheetBehavior
@Suppress("unused")
class LockableBottomSheetBehavior<V : View> : BottomSheetBehavior<V> {
constructor() : super()
constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
var swipeEnabled = true
override fun onInterceptTouchEvent(
parent: CoordinatorLayout,
child: V,
event: MotionEvent
): Boolean {
return if (swipeEnabled) {
super.onInterceptTouchEvent(parent, child, event)
} else {
false
}
}
override fun onTouchEvent(parent: CoordinatorLayout, child: V, event: MotionEvent): Boolean {
return if (swipeEnabled) {
super.onTouchEvent(parent, child, event)
} else {
false
}
}
override fun onStartNestedScroll(
coordinatorLayout: CoordinatorLayout,
child: V,
directTargetChild: View,
target: View,
axes: Int,
type: Int
): Boolean {
return if (swipeEnabled) {
super.onStartNestedScroll(
coordinatorLayout,
child,
directTargetChild,
target,
axes,
type
)
} else {
false
}
}
override fun onNestedPreScroll(
coordinatorLayout: CoordinatorLayout,
child: V,
target: View,
dx: Int,
dy: Int,
consumed: IntArray,
type: Int
) {
if (swipeEnabled) {
super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, type)
}
}
override fun onStopNestedScroll(
coordinatorLayout: CoordinatorLayout,
child: V,
target: View,
type: Int
) {
if (swipeEnabled) {
super.onStopNestedScroll(coordinatorLayout, child, target, type)
}
}
override fun onNestedPreFling(
coordinatorLayout: CoordinatorLayout,
child: V,
target: View,
velocityX: Float,
velocityY: Float
): Boolean {
return if (swipeEnabled) {
super.onNestedPreFling(coordinatorLayout, child, target, velocityX, velocityY)
} else {
false
}
}
}
And use it in your xml file:
app:layout_behavior="com.your.package.LockableBottomSheetBehavior"
It disables all users actions, it can be used when you want control BottomSheet only programmatically.