标签：android style blog http io color ar os sp
I really like the new PopupMenu we got in 3.0, but I just can‘t display any icons next to the menu items in it. I‘m inflating the menu from the .xml below:
<item android:id="@+id/menu_delete_product" android:icon="@drawable/sym_action_add" android:title="delete" android:showAsAction="ifRoom|withText" /> <item android:id="@+id/menu_modify_product" android:icon="@drawable/sym_action_add" android:title="modify" android:showAsAction="ifRoom|withText" /> <item android:id="@+id/menu_product_details" android:icon="@drawable/sym_action_add" android:title="details" android:showAsAction="ifRoom|withText" />
If you‘re willing to be a bit adventurous, look at Google‘s source code for PopupMenu. Create your own class i.e. MyPopupMenu that is the same as Google‘s PopupMenu class, but make one slight change.
In PopupMenu‘s constructor:
public MyPopupMenu(Context context, View anchor) { // TODO Theme? mContext = context; mMenu = new MenuBuilder(context); mMenu.setCallback(this); mAnchor = anchor; mPopup = new MenuPopupHelper(context, mMenu, anchor); mPopup.setCallback(this); mPopup.setForceShowIcon(true); //ADD THIS LINE }
use the method setForceShowIcon to force it to show the icon. You can also just expose a public method to set this flag as well depending on your needs.
Contribution to the solution provided by Gaelan Bolger. Use this code if you get a "IllegalAccessException: access to field not allowed".
PopupMenu popup = new PopupMenu(mContext, view); try { Field[] fields = popup.getClass().getDeclaredFields(); for (Field field : fields) { if ("mPopup".equals(field.getName())) { field.setAccessible(true); Object menuPopupHelper = field.get(popup); Class<?> classPopupHelper = Class.forName(menuPopupHelper .getClass().getName()); Method setForceIcons = classPopupHelper.getMethod( "setForceShowIcon", boolean.class); setForceIcons.invoke(menuPopupHelper, true); break; } } } catch (Exception e) { e.printStackTrace(); } prepareMenu(popup.getMenu()); popup.show();
I was able to show the icons using reflection. It may not be the most elegant solution but it works.
try { Class<?> classPopupMenu = Class.forName(popupMenu .getClass().getName()); Object menuPopupHelper = classPopupMenu.getDeclaredField( "mPopup").get(popupMenu); Class<?> classPopupHelper = Class.forName(menuPopupHelper .getClass().getName()); Method setForceIcons = classPopupHelper.getMethod( "setForceShowIcon", boolean.class); setForceIcons.invoke(menuPopupHelper, true); } catch (Exception e) { e.printStackTrace(); }
http://stackoverflow.com/questions/6805756/is-it-possible-to-display-icons-in-a-popupmenu
Is it possible to display icons in a PopupMenu?
标签：android style blog http io color ar os sp
原文地址：http://www.cnblogs.com/savagemorgan/p/4103075.html
