public static void activateNewButton(BottomNavigationView bottomNavigationView, int position) {
BottomNavigationMenuView bottomNavigationMenuView =
(BottomNavigationMenuView) bottomNavigationView.getChildAt(0);
try {
Method activateNewButtonMethod =
bottomNavigationMenuView.getClass().getDeclaredMethod("activateNewButton", int.class);
activateNewButtonMethod.setAccessible(true);
activateNewButtonMethod.invoke(bottomNavigationMenuView, position);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 取消大于三项时占用其他 item 的空间
*
* @param bottomNavigationView
*/
public static void disableShiftMode(BottomNavigationView bottomNavigationView) {
BottomNavigationMenuView bottomNavigationMenuView =
(BottomNavigationMenuView) bottomNavigationView.getChildAt(0);
try {
Field shiftingModeField =
bottomNavigationMenuView.getClass().getDeclaredField("mShiftingMode");
shiftingModeField.setAccessible(true);
shiftingModeField.setBoolean(bottomNavigationMenuView, false);
shiftingModeField.setAccessible(false);
for (int i = 0; i < bottomNavigationMenuView.getChildCount(); i++) {
BottomNavigationItemView bottomNavigationItemView =
(BottomNavigationItemView) bottomNavigationMenuView.getChildAt(i);
bottomNavigationItemView.setShiftingMode(false);
bottomNavigationItemView.setChecked(bottomNavigationItemView.getItemData().isChecked());
}
} catch (Exception e) {
e.printStackTrace();
}
}