[英]Actionbar menu item with submenu doesn't work on Android 4.4 after long click
[英]Android actionbar menu item long click detect possible?
我有一个ActionBar
和一些设置为显示在ActionBar
上的菜单项,如下所示:
<item
android:id="@+id/menu_play1"
android:orderInCategory="100"
android:showAsAction="ifRoom|withText"
android:title="Play1x"/>
onOptionsItemSelected(MenuItem item)
在捕获正常点击时效果很好,但是我想长时间按住,所以我可以做一些与默认行为不同的操作。
那可能吗? 如何? 谢谢。
允许长时间按MenuItems并不是一种好方法。
使用Java Reflection尝试使其成为可能:
private interface OnMenuItemLongClickListener{
boolean onMenuItemLongClik(MenuItem m);
}
private void getMenuItemsView(Activity a, final Menu m, final OnMenuItemLongClickListener listener) throws NoSuchFieldException, IllegalArgumentException, IllegalAccessException{
View homeButton = a.findViewById(android.R.id.home);
ViewParent parentOfHome = homeButton.getParent().getParent(); //ActionBarView is parent of home ImageView, see layout file in sources
if (!parentOfHome.getClass().getName().contains("ActionBarView")) {
parentOfHome = parentOfHome.getParent();
Class absAbv = parentOfHome.getClass().getSuperclass(); //ActionBarView -> AbsActionBarView class
Field actionMenuPresenterField = absAbv.getDeclaredField("mActionMenuPresenter");
actionMenuPresenterField.setAccessible(true);
Object actionMenuPresenter = actionMenuPresenterField.get(parentOfHome);
Field actionMenuViewField = actionMenuPresenter.getClass().getSuperclass().getDeclaredField("mMenuView");
actionMenuViewField.setAccessible(true);
Object actionMenuView = actionMenuViewField.get(actionMenuPresenter);
Field childrenField= actionMenuView.getClass().getSuperclass().getSuperclass().getDeclaredField("mChildren");
childrenField.setAccessible(true);
Field menuField =actionMenuPresenter.getClass().getSuperclass().getDeclaredField("mMenu");
menuField.setAccessible(true);
Object menu = menuField.get(actionMenuPresenter);
Object[] menuItemsAsViews = (Object[])childrenField.get(actionMenuView);
View.OnLongClickListener longListener = new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
return listener.onMenuItemLongClik(m.findItem(v.getId()));
}
};
for(Object menuView:menuItemsAsViews ){
View v = (View)menuView;
v.setOnLongClickListener(longListener);
}
}
}
您可以在以下要点获得此信息: https : //gist.github.com/NikolaDespotoski/6978883
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