I have an Actionbar
from android.support.v7.widget.Toolbar
. It has hamburger image with animation to back arrow, I want to change back arrow from &
Try this:
//Find the action bar for customizations
final ActionBar ab = getSupportActionBar();
assert ab != null;
//Make the action bar display an up arrow and set its drawable and color
ab.setDisplayHomeAsUpEnabled(true);
final Drawable upArrow = ResourcesCompat.getDrawable(
getResources(),
R.drawable.abc_ic_ab_back_mtrl_am_alpha, //this is the <- arrow from android resources. Change this to the thing you want.
null);
assert upArrow != null;
upArrow.setColorFilter(
ContextCompat.getColor(
getApplicationContext(),
R.color.white // change this to the color you want (or remove the setColorFilter call)
),
PorterDuff.Mode.SRC_ATOP);
ab.setHomeAsUpIndicator(upArrow);
There are at least half a dozen ways to do this, but probably the simplest and shortest is to use reflection to grab the ActionBarDrawerToggle
's Drawable
, and flip its direction.
This example wraps that functionality in a subclass, and should work no matter your ActionBar
/Activity
setup (provided the original class worked there in the first place).
public class FlippedDrawerToggle extends ActionBarDrawerToggle {
public FlippedDrawerToggle(Activity activity, DrawerLayout drawerLayout,
int openDrawerContentDescRes, int closeDrawerContentDescRes) {
this(activity, drawerLayout, null,
openDrawerContentDescRes, closeDrawerContentDescRes);
}
public FlippedDrawerToggle(Activity activity, DrawerLayout drawerLayout,
Toolbar toolbar, int openDrawerContentDescRes, int closeDrawerContentDescRes) {
super(activity, drawerLayout, toolbar,
openDrawerContentDescRes, closeDrawerContentDescRes);
try {
Field sliderField = ActionBarDrawerToggle.class.getDeclaredField("mSlider");
sliderField.setAccessible(true);
DrawerArrowDrawable arrow = (DrawerArrowDrawable) sliderField.get(this);
arrow.setDirection(DrawerArrowDrawable.ARROW_DIRECTION_RIGHT);
}
catch (NoSuchFieldException | IllegalAccessException e) {
// Fail silently
}
}
}
This will only change the direction of the toggle's image. If you actually want the whole ActionBar
/Toolbar
to be flipped, you should instead change the layout's direction accordingly.
Add this condition between mDrawerToggle = new ActionBarDrawerToggle...
and mDrawerToggle.syncState();
like this :
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
if (getResources().getConfiguration().getLayoutDirection() == View.LAYOUT_DIRECTION_RTL)
{
toolbar.setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
}
mDrawerToggle.syncState();