I'm swapping out the action bar for the tool bar, and I nearly have every piece of the puzzle in place. My issue is specifically if I navigate 'up' and restore the navigation drawer, the drawer toggle button no longer works. I figured out if I set the drawer mode to unlocked I have the ability to swipe to open the drawer, but can't click to open the drawer.
So I load fragment A, drawer behaviour is fine, go down to fragment B and apply the up icon, hit up to go back to A, and the drawer won't open with a click any more.
Entering Fragment B:
Toolbar t = mHostingActivity.getToolbar();
mHostingActivity.getDrawerToggle().setDrawerIndicatorEnabled(false);
mHostingActivity.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
t.setNavigationIcon(mHostingActivity.getV7DrawerToggleDelegate().getThemeUpIndicator());
t.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
popBackStackToTop(mHostingActivity);
}
});
/**
* Pop the back stack and hide the Up caret all the way to the top level of the {@link com.loylap.activities.MainActivity}
*
* @param activity our hosting activity
*/
public static void popBackStackToTop(MainActivity activity) {
if (activity != null) {
FragmentManager fm = activity.getSupportFragmentManager();
fm.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
activity.getDrawerLayout().setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
activity.getDrawerToggle().setDrawerIndicatorEnabled(true);
}
}
The navigation drawer is set up just like the sample, maybe the old way of setting up the options is the issue? For example, I still have this in my activity:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
EDIT:
Okay so I've narrowed down the issue to the setNavigationOnClickListener(). If I don't set this (and go up via back button) - the drawer behaves correctly. So now the question is how do I correctly allow the user to go 'up', and restore the click listener after to we do go up?
public class ActionBarDrawerToggle implements DrawerLayout.DrawerListener. This class provides a handy way to tie together the functionality of DrawerLayout and the framework ActionBar to implement the recommended design for navigation drawers.
In Android applications, Toolbar is a kind of ViewGroup that can be placed in the XML layouts of an activity. It was introduced by the Google Android team during the release of Android Lollipop(API 21). The Toolbar is basically the advanced successor of the ActionBar.
So I've figured out I was creating the wrong click listener. Instead of setNavigationOnClickListener(), I need setToolbarNavigationClickListener() :)
A subtle but important change, now the tool bar is behaving in partnership with the v7 ActionBarDrawerToggle
/**
* Create the Up caret for a lower level fragment {@link com.loylap.activities.MainActivity}
*
* @param activity our hosting activity
*/
public static void createUpButton(final MainActivity activity)
{
ActionBarDrawerToggle toggle = activity.getDrawerToggle();
//Disables onClick toggle listener (onClick)
toggle.setDrawerIndicatorEnabled(false);
toggle.setToolbarNavigationClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
popBackStackToTop(activity);
}
});
Toolbar t = activity.getToolbar();
t.setNavigationIcon(activity.getV7DrawerToggleDelegate().getThemeUpIndicator());
activity.getDrawerLayout().setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
}
In my case it was a matter of order, I needed to first set the toolbar and than set the on click listener. in this order:
//works
setSupportActionBar(myToolbar);
myToolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
openDrawer(view);
}
});
rather than this:
//doesn't work
myToolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
openDrawer(view);
}
});
setSupportActionBar(myToolbar);
Inspired by the solution of Daniel Wilson but you only have to do it once and it is all set.
In my NavigationDrawer
's setUp()
(or you can do it anywhere you are initialising your ActionBarDrawerToggle
instance), I write this code:
mDrawerToggle.setToolbarNavigationClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(!mDrawerToggle.isDrawerIndicatorEnabled()) {
getActivity().onBackPressed();
}
}
});
Now every time android.id.home
is pressed and hamburger sign is not shown, the parent activity's onBackPressed()
is called.
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