I have been adding a navigation drawer to one of my apps, and I started to wonder whether or not it would be better to switch from using a ListView
to multiple TextView
s for the navigation drawer list items. Looking at the Google Design Guidelines on Navigation Drawer content (specifically the section on 'Scrolling'), I noticed that it may look nicer with multiple TextView
s.
At the moment, I am using a ListView
and ImageView
in my navigation drawer (it looks a little like this. However, when I scroll in my navigation drawer (I do this by turning my device landscape as there are not enough items in my list yet), only the ListView
scrolls, and the ImageView
stays as it is. I want it to be able to scoll more like this, where the ImageView
is also scrolled with the ListView
.
Additionally, I found that my ListView
in my navigation drawer does not have the ripple effects as shown in this image although other ListView
s in my other Activity
s and Fragment
s do.
What are the issues I am facing and how could I go about resolving these?
In Google's I/O App (2014), there seems to be a LinearLayout
at the bottom of the navigation drawer layout which I think is responsible for the list of items shown. Could someone explain how this would work?
only the ListView scrolls, and the ImageView stays as it is
It sounds like your drawer contains an ImageView
at the top and then a ListView
follows. With this configuration only the ListView
will scroll (because it's the only view that's scrollable).
You need to add the ImageView
as a header which is always at the beginning of the list. As one of the comments suggested, do listView.addHeaderView
.
there seems to be a LinearLayout at the bottom of the navigation drawer layout which I think is responsible for the list of items shown. Could someone explain how this would work?
They use the LinearLayout
as a container to hold all the TextView
s:
private void createNavDrawerItems() {
mDrawerItemsListContainer = (ViewGroup) findViewById(R.id.navdrawer_items_list);
...
int i = 0;
for (int itemId : mNavDrawerItems) {
mNavDrawerItemViews[i] = makeNavDrawerItem(itemId, mDrawerItemsListContainer);
mDrawerItemsListContainer.addView(mNavDrawerItemViews[i]);
++i;
}
}
I believe the reason they use a LinearLayout
and inflate all the items programmatically is to be able to use separator items easily:
private View makeNavDrawerItem(final int itemId, ViewGroup container) {
...
if (itemId == NAVDRAWER_ITEM_SEPARATOR) {
layoutToInflate = R.layout.navdrawer_separator;
} else if (itemId == NAVDRAWER_ITEM_SEPARATOR_SPECIAL) {
layoutToInflate = R.layout.navdrawer_separator;
} else {
layoutToInflate = R.layout.navdrawer_item;
}
...
return view;
}
In a ListView
you'd have to create a separate item type and use the divider's layout there, which could possibly get more cumbersome.
At first glance, however, this code just seems to be re-inventing the wheel as all of this is possible with a ListView
.
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