Using setSupportActionBar() stops hamburger button when opening the navigation drawer - android

I've just begun work on a small little app and would like to change the Toolbar title to the name of the fragment the user has selected from the nav drawer, however upon setting the Toolbar as the action bar to be able to use :
getSupportActionBar.setTitle("[insert category here]")
The toolbar's hamburger button stops opening the nav drawer when clicked. (You can still open it via dragging in from left).
Does anyone know how to fix this and/or does anyone know of another method to change the toolbar's title? (I found this method via googling).

Try this in your Activity:
public void setActionBarTitle(String title) {
getSupportActionBar().setTitle(title);
}
And this is for your Fragment(you can use it on OnCreate or onResume method):
#Override
public void onResume(){
super.onResume();
// Set the title
((MainFragmentActivity) getActivity()).setActionBarTitle("Your title");
}
Also, have a look at:
Change ActionBar title using Fragments
Setting Custom ActionBar Title from Fragment

this worked well with me hope it helps anyone facing the same problem (this fix the problem when you press on the hamburger icon to open the drawerLayout)
setSupportActionBar(binding.appBarMain.toolbar)
//to open the navBar by pressing on the hamburger Icon
ActionBarDrawerToggle(this, binding.drawerLayout,binding.appBarMain.toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)

Related

Hamburger Icon Not showing

When I use to change Hamburger Icon to Back Icon while add a new fragment it's Perfectly working. Here is my code
supportActionBar!!.setDisplayHomeAsUpEnabled(true)
supportActionBar!!.setDisplayShowHomeEnabled(true)
But when I press back button and close the fragment then it not change to hamburger icon
supportActionBar!!.setDisplayHomeAsUpEnabled(false)
supportActionBar!!.setDisplayShowHomeEnabled(false)
NOTE: I dont have drawer layout. I use this library: yarolegovich/SlidingRootNav
This is expected behaviour, it won't automatically change when you are doing:
actionBar.setDisplayHomeAsUpEnabled(true);
One solution would be to handle it for yourself. Just change the icon manually
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeAsUpIndicator(R.drawable.back);
and on back pressed, change it to hamburger icon:
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeAsUpIndicator(R.drawable.hamburger_icon);
Hope this helps. Cheers.

Navigation drawer not opening from cutom menu button

I'm working on an Android App, I have a navigation drawer over there. Since the navigation drawer toolbar can't be transparent, and the ending three dots button icon can't be changed, I opted for hiding that toolbar, and show my custom layout. It will give me all the functionality what ever is needed.
But the problem I'm facing right now is, once the activity starts, if I click the custom menu button it doesn't open. Once I drag it and open, after that whenever I click the menu button it opens the navigation drawer.
What might i be missing? This is what I'm doing, while debugging its even coming to the else part, but doesn't open.
In BaseActivity:
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
ivLeft.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (drawer.isDrawerOpen(Gravity.LEFT)) {
drawer.closeDrawer(Gravity.LEFT);
} else {
drawer.openDrawer(Gravity.LEFT);
}
}
});
In any of the child activity:
toolbar.setVisibility(View.GONE);
navigationView.setVisibility(View.GONE);
Please help..
The root cause of your problem is the fact that you're setting the drawer View's visibility to GONE. The direct cause of the odd behavior you describe, though, is due to how DrawerLayout and one of its helper classes update the child Views when the drawer state changes.
The OnClickListener you set to open and close the drawer was working as it should. It just didn't appear to be, since the drawer View was GONE. When you manually opened the drawer by dragging, however, the ViewDragHelper that DrawerLayout uses was firing a callback method that explicitly sets the drawer to VISIBLE. This callback is not fired when the drawer is opened programmatically - that is, with the openDrawer() method - which explains why the drawer didn't show just by clicking your custom toggle button. After you had dragged the drawer open once, the drawer View was visible, and the toggle would then work as expected.
The drawer View is in its closed state by default, so you don't need to hide it, and you can just remove the navigationView.setVisibility(View.GONE); line.

Left Menu Icon on Action Bar in Android

How to Change the left side menu icon on the Action Bar ? I have created this using Navigation Drawer Fragment in Android Studio. Now an Arrow pointing left is displayed "<-" but i need to display the = icon. Where should i change this ?
You could use this format for your ActionBarDrawerToggle:
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.CUSTOM_ICON, // Navigation menu toggle icon
R.string.DRAWER_OPEN, // Navigation drawer open description
R.string.DRAWER_CLOSE // Navigation drawer close description
)
Change your drawable and make sure it is the same name as the one in the code.
To toggle the indicator you've to use:
public void toogleDrawer(boolean value){
mDrawerToggle.setDrawerIndicatorEnabled(!value);
getSupportActionBar().setDisplayHomeAsUpEnabled(value);
}
Please post the complete code relating to your drawer fragment, and action bar setup(if any) and also the relevant layouts. You've to research around a bit before asking the question. Check this question here : Cannot listen clicks on up caret
Everyone can provide specific answers to your problem if you add more content to it.

NavigationView and ActionBarDrawerToggle

With the new NavigationView is it still recommended to use ActionBarDrawerToggle or is this not "Material Design"? For instance previously we were supposed to hide action bar items when the drawer was opened but now the guidelines say that they should stay.
With the new NavigationView is it still recommended to use ActionBarDrawerToggle
No, it's not required.
If you look at the "official" demo code for the new Design Library, ActionBarDrawerToggle is no longer used, since the new NavigationView and AppCompatActivity don't really need it.
With the new v22 support library, you can strip out all of your ActionBarDrawerToggle code and just use the following to handle the interaction between NavigationDrawer and the ActionBar/ToolBar hamburger icon:
#Override
protected void onCreate(Bundle savedInstanceState) {
...
final ActionBar actionBar = getSupportActionBar();
actionBar.setHomeAsUpIndicator(R.drawable.ic_menu);
actionBar.setDisplayHomeAsUpEnabled(true);
...
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
mDrawerLayout.openDrawer(GravityCompat.START);
return true;
....
}
return super.onOptionsItemSelected(item);
}
You will need to provide your own "hamburger" drawable (R.drawable.ic_menu in my example). Besides that, the above code is all that's needed to handle opening of the drawer. The android.R.id.home case in onOptionsItemSelected() represents your hamburger drawer button. It points to a built-in resource id (not something you add to you menu xml), and it's handled automatically.
Besides that, you have to implement closing of the drawer by simply adding closeDrawers() to your click listener, like this:
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
// Handle menu item clicks here.
drawerLayout.closeDrawers();
return true;
}
});
closeDrawers() is a method of DrawerLayout, and takes care of everything. That's it. That's all the code you really need to properly handle navigation drawers now. No more messy code for flipping hamburgers and such!
Of course, if you really want to, you can still use NavigationView with ActionBarDrawerToggle the old way. But you certainly don't have to.
If you want drawer callbacks
Even though ActionBarDrawerToggle is not required to open/close the drawer, it may still be useful for handling additional callbacks (especially if you're using ActionBar already). Otherwise, you can implement your own by using DrawerLayout.DrawerListener or by using DrawerLayout.SimpleDrawerListener(), to handle other open/close related events.
With the new NavigationView is it still recommended to use ActionBarDrawerToggle
Yes. The two tackle two completely different aspects of the navigation drawer.
In total, there are generally three components to a navigation drawer:
A DrawerLayout
Your navigation drawer content
A method of showing and hiding the drawer
The DrawerLayout is the layout that holds the navigation drawer content and your app's content. It is what allows you to pull the drawer in from the side and display the drawer over your app's content (the first child of the DrawerLayout).
Your navigation drawer content (the second child of your DrawerLayout) is typically a list of items that the user can click on. Previously, most implementations that I have seen used a ListView or a RecyclerView and maybe a header of some sort. NavigationView is a replacement for this, and is used to provide Material-compliant drawer contents.
ActionBarDrawerToggle is used to provide the hamburger icon in your app bar. It is what allows your users to tap on the icon to open or close your drawer.
Completing the other answers, the Navigation View should be fit into the whole screen in terms of height so it will hide the hamburger icon when opened. Because of this, having the animation from burger to arrow or even just showing the arrow is not necessary.
But when clicking on the current screen it goes to another fragment, imagine a gallery of photos and clicking on a photo will show it bigger, there should be an animation from burger to arrow and the arrow should stay and when pressed there should be a reverse animation to the burger so the navigation view can be opened again.
You can achieve this with ActionBarDrawerToggle still, even with navigation view because it uses the same DrawerLayout as before. So it still has uses, but of course not necessary.

Drawer Indicator on ActionBar compat v7 21

My application uses ActionBarCompat library as well as the NavigationDrawer support library.
I use ActionBarDrawerToggle appcompat v7 to get the drawer. There are a custom search view on ActionBar. Like this:
But the drawer indicator shows wrongly, doesn't show the Back Arrow when action search view is expanded;
I want it to show like PlayStore application:
How can I do it? Thanks in advance.
There is simple and quick solution to this.
First, you should know now the android.support.v4.app.ActionBarDrawerToggle is deprecated.
You must replace that with android.support.v7.app.ActionBarDrawerToggle.
Here is an Example showing the same.
DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(
this, mDrawerLayout, mToolbar,
R.string.navigation_drawer_open, R.string.navigation_drawer_close
);
mDrawerLayout.setDrawerListener(mDrawerToggle);
After that use support Action Bar as shown here in this documentation and then your drawer indicator will show correctly also showing the Back Arrow when action search view is expanded.
Remember to use com.android.support:appcompat-v7:21.0.+" (Api level 21)
and android.support.v7.app.ActionBar
You can set up the support library using this guide.
AND after that your drawer indicator will perfectly look like this..!!!
You got that issue because you set (android:)homeAsUpIndicator in your theme. Remove that attribute will solve your problem.
This is not the arrow from ActionBarDrawerToggle. I think Google uses Toolbar as they do in google io app. On OnClick event they just change toolbar navigation icon with toolbar.setNavigationIcon(R.id.ic_up). And R.id.ic_up - is a custom arrow drawable.
For me none of solutions posted here in SO worked. I had to look under the hood of support library to find out why and when is the home icon set and I noticed few things. The main observation is that the icon is set in this function:
android.support.v7.widget.Toolbar#setNavigationIcon(android.graphics.drawable.Drawable)
on the line
mNavButtonView.setImageDrawable(icon);
If you are facing the same problem as I was and none of suggested solutions work (setting theme, trying to call setNavigationIcon on toolbar, setHomeAsUpIndicator on Actionbar or even something else), I suggest to locate function mentioned above and put breakpoint there. You can then see when the function is called and identify the last function call (from the Frame window in android studio) that sets up the icon. For me it was this activity life-cycle method syncing navigation drawer:
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
mToolbar.setNavigationIcon(R.drawable.ic_hamburger);
}
I simply added last line and it worked.

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