ActionBarSherlock: IcsListPopupWindow screen clipping method. Untested. Call in show(): mPopup.setWindowLayoutMode(widthSpec, heightSpec); applyClipToScreen(); //XXX mPopup.setClipToScreenEnabled(true);

IcsListPopupWindow

protected void applyClipToScreen() {
  	final WindowManager.LayoutParams p = (LayoutParams) mPromptView.getLayoutParams();
		
		mDropDownAnchorView.getLocationOnScreen(mScreenLocation);
		final Rect displayFrame = new Rect();
        mDropDownAnchorView.getWindowVisibleDisplayFrame(displayFrame);
		
		final int displayFrameWidth = displayFrame.right - displayFrame.left;

		int right = p.x + p.width;
		if (right > displayFrameWidth) {
			p.x -= right - displayFrameWidth;
		}
		if (p.x < displayFrame.left) {
			p.x = displayFrame.left;
			p.width = Math.min(p.width, displayFrameWidth);
		}

		if (mPromptPosition == POSITION_PROMPT_ABOVE) {
			int popupTop = mScreenLocation[1] + mDropDownHorizontalOffset - mDropDownWidth;
			if (popupTop < 0) {
				p.y += popupTop;
			}
		} else {
			p.y = Math.max(p.y, displayFrame.top);
		}
	}