NullPointerException with AppCompat BottomSheets

Question

LinearLayout bottomSheetViewgroup = (LinearLayout) findViewById(R.id.bottomSheet);

bottomSheetBehavior = BottomSheetBehavior.from(bottomSheetViewgroup);

bottomShee         


        

Answer 1

public class ExpandedBottomSheetBehavior extends
    android.support.design.widget.BottomSheetBehavior {

  public ExpandedBottomSheetBehavior(Context context, AttributeSet attrs) {
    super(context, attrs);
}

  @Override
  public boolean onLayoutChild(final CoordinatorLayout parent, final V child, final int layoutDirection) {
    return super.onLayoutChild(parent, child, layoutDirection);
  }

  @Override
  public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
    try {
      return super.onInterceptTouchEvent(parent, child, event);
    } catch (NullPointerException ignored) {
      return false;
    }
  }
}