The new NavigationView in the new Design Support Library works really great.
They use "menu-items" to display the options.
But how can I display a counter to the right of the menu item?
Like in this picture:
Or like in the GMail app.
Starting from version 23 of appcompat-v7 NavigationView
supports action views, so it is quite easy to implement counter yourself.
Create counter layout, i.e. menu_counter.xml
:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:textAppearance="@style/TextAppearance.AppCompat.Body2" />
Reference it in your drawer menu xml, i.e. menu/drawer.xml
:
<item
...
app:actionLayout="@layout/menu_counter" />
Note that you should use app
namespace, don't try to use android
.
Alternatively you can manually set action view with MenuItem.setActionView()
method.
Find menu item and set counter:
private void setMenuCounter(@IdRes int itemId, int count) {
TextView view = (TextView) navigationView.getMenu().findItem(itemId).getActionView();
view.setText(count > 0 ? String.valueOf(count) : null);
}
Note, that you will need to use MenuItemCompat if you have to support Android 2.x versions.