PreferenceFragment changing ActionBar - android

I have an app that has a navigation drawer throughout the app. I've just added a Preferences Activity with a nested PreferenceScreen.
All works well on the main screen, but when I click into the nested screen, the ActionBar defaults to the Android back button, completely removing the context/overflow menu as well the navigation drawer. I'm sure it has something to do with the fragments being replaced, but all my efforts to fix it have done nothing.
How can I have the PreferenceFragment maintain my normal action bar?
Thanks

Related

Show Navigation drawer in every activity - android studio

I have a problem...I am developing an app in android studio.In the meantime,there is already a navigation drawer in it.But the problem is, it only appears in the home screen.When it goes to another screen, the navigation drawer is not shown. I am new to android studio but i know some of Java languages.Can anyone help me with providing anything that would help me make the navigation drawer show in all of slides and pages in my app.
from docs
Navigation Drawer
The navigation drawer is a panel that displays the app’s main
navigation options on the left edge of the screen. It is hidden most
of the time, but is revealed when the user swipes a finger from the
left edge of the screen or, while at the top level of the app, the
user touches the app icon in the action bar.
for achieve what you asked you have to use Fragments
Fragment represents a behavior or a portion of user interface in an
Activity. You can combine multiple fragments in a single activity to
build a multi-pane UI and reuse a fragment in multiple activities. You
can think of a fragment as a modular section of an activity, which has
its own lifecycle, receives its own input events, and which you can
add or remove while the activity is running (sort of like a "sub
activity" that you can reuse in different activities).
see this examples for more details
1. Navigation Drawer - android hive
2. Navigation Drawer exp 2
3. Navigation Drawer exp 3
Refer this answer also
Answer
You have to add fragments in that activity where the navigation drawer exist. Whenver the user will click on the option in the navigation drawer the view should be changed by replacing with the required fragment.So by using the fragments user will stay on the same activity but just the views will be changed in that activity. you can refer to the fragments documentation provided by android developers. https://developer.android.com/guide/components/fragments.html

Android navigation drawer with fragments

I have an activity that extends fragmentActivity that has a navigation Drawer, and three different fragments.
Is there a way to make a navigation Drawer that has different buttons inside each of my fragments?
For example when you enter fragment 1 you will see certain buttons in the navigation Drawer, and when you go to fragment 2 you will see different buttons in the navigation Drawer.
You should just define which options are to be displayed in the NavigationDrawer depending on which current Fragment you're on, using a switch statement or if statement.
Check out this link:
How to change fragments using Android navigation drawer
Also, from this link https://developer.android.com/reference/android/support/v4/widget/DrawerLayout.html
As per the Android Design guide, any drawers positioned to the
left/start should always contain content for navigating around the
application, whereas any drawers positioned to the right/end should
always contain actions to take on the current content. This preserves
the same navigation left, actions right structure present in the
Action Bar and elsewhere.
So this type of thing seems like it was planned for when the NavigationDrawer was designed.

How to manage app bar when using fragments?

I'm using one activity as a container and multiple fragments. Some of the fragments need to display app bar, some don't while others require to show a special app bar (e.g. an app bar that shrinks when swiping up). So where should I put the app bar (or action bar), in the activity or in the fragments?
By the way, if I put the app bar inside the fragments, how should I manage the app bars properly when fragments come in or move out?
if every fragment should have a different app bar, you probably want to use a Toolbar.
Toolbar is a standalone ActionBar that you can put anywhere, in any view group. The Toolbar API is roughly the same as the ActionBar one, so you should not have any major issue migrating to Toolbar.
For your app, you should have Toolbar in every fragment, when needed and every fragment control it's own Toolbar.

How to make the Navigation Drawer or bottom selection bar always accessible in an android project?

I am developing an Android project with Android Studio.
I would like to have the menu is always accessible in every view like Google Play Store (the Sidebar) and App Store (the Bottom selection bar).
I am thinking to do it in two ways:
Make my app have only one activity with Navigation Drawer, all the other views are above this activity using fragments.
Recreate the sidebar or bottom selection bar every time I switch to another activity.
Both of these two ways are very complex and cost a lot. Do you have some better ways?
PS: If not, could you suggest me some links about how to implement these two methods?
Thanks a lot.
you can create a MasterActivity that extend Activity and contain your sidebar. other Activity can extend from your MasterActivity by this way you can access your sidebar on each activity.
I think you should use the default navigation drawer and default action bar.
If you are using the Android Studio then
right click on your package and go to New/Activity/Navigation Drawer Activity.
That will create navigation drawer fragment and activity automatically.
But If you are using Eclipse then these links will be useful for you.Navigation Drawer
Action Bar
you can use include tag in other layout activity and call Navigation Drawer:
<include
android:id="#+id/nDrawer"
layout="#layout/your_NavigationDrawerLayoutName"/>

Setting Navigation Icon on Android ActionBar

So I'm working on adding ActionBarSherlock and the Navigation Drawer to a project that previously implemented a custom (very poorly written) "action bar". Instead of using fragments and a backstack of activities for navigation, some activities show and hide different layouts. (That is, suppose I am in a list mode and then select a button to go into an edit screen. The app currently hides the list layout and shows another layout.).
So I've added actionbar sherlock and a navigation drawer to all the activities. I want to be able to programmatically switch the navigation icon from the 3 lines to the arrow when certain buttons are pressed.
I can't figure out how to do this though. Any ideas?
Thanks!
The solution to this problem is to use the method:
setDrawerIndicatorEnabled(boolean enable)
inside the ActionBarDrawerToggle class.
After:
drawer.setDrawerListener(toggle);
Use this code:
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setHomeAsUpIndicator(R.drawable.select);
It depends how wedded you are to built-in actionbar artifacts. You can always redraw the current actionbar by inflating a layout of your choosing, then calling
getSherlockActivity().getSupportActionBar().setDisplayShowTitleEnabled(false);
getSherlockActivity().getSupportActionBar().setDisplayShowHomeEnabled(false);
getSherlockActivity().getSupportActionBar().setDisplayShowCustomEnabled(true);
// Inflate and do whatever you need to your view...
getSherlockActivity().getSupportActionBar().setCustomView(abView);
getSherlockActivity().getSupportActionBar().show();
When you want to go back to your standard (assuming you're using a DrawerLayout to do your navigation drawer), you can just set make a call to setDisplayShowCustomEnabled(false) (re-enable showHome and showTitle as you please).
As far as I know, customization of the back button can only be done via themes. Besides, swapping the drawer icon for the back icon (within the same Activity) doesn't make sense, since users would still be able to access the navigation drawer by sliding the left most edge to the right. It just wouldn't make sense.
If you absolutely need the back icon, then it would make the most sense to make that screen a new Activity since you would indeed be adding another "level" to the stack, which is what the back icon represents.

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