So I have tabs that I want to hide when the Navigation Drawer starts opening. The code I have hides them when it finished opening, but it's not what I want.
mDrawerToggle = new ActionBarDrawerToggle(
this,
mDrawerLayout,
R.drawable.ic_drawer,
R.string.drawer_open,
R.string.drawer_close
) {
@Override
public void onDrawerClosed(View view) {
invalidateOptionsMenu();
setActionBarMode(ActionBar.NAVIGATION_MODE_TABS);
}
@Override
public void onDrawerOpened(View drawerView) {
invalidateOptionsMenu();
setActionBarMode(ActionBar.NAVIGATION_MODE_STANDARD);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
Here's what I tried:
onClickListener
to mDrawerLayout
. onClick
never gets calledonTouchListener
to mDrawerLayout
. onTouch
never gets calledActionBarDrawerToggle
and DrawerLayout
classes. Could not find anything like onDrawerStartedOpening
.There are 2 possible ways to do that:
1) Use onDrawerSlide(View drawerView, float slideOffset)
callback
slideOffset
changes from 0 to 1. 1
means it is completely open, 0
- closed.
Once offset changes from 0
to !0
- it means it started opening process. Something like:
mDrawerToggle = new ActionBarDrawerToggle(
this,
mDrawerLayout,
R.drawable.ic_drawer,
R.string.drawer_open,
R.string.drawer_close
) {
@Override
public void onDrawerSlide(View drawerView, float slideOffset) {
if (slideOffset == 0
&& getActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_STANDARD) {
// drawer closed
getActionBar()
.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
invalidateOptionsMenu();
} else if (slideOffset != 0
&& getActionBar().getNavigationMode() == ActionBar.NAVIGATION_MODE_TABS) {
// started opening
getActionBar()
.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
invalidateOptionsMenu();
}
super.onDrawerSlide(drawerView, slideOffset);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
2) Use onDrawerStateChanged(int newState)
callback
You need to listen to STATE_SETTLING
states - this state is reported whenever drawer starts moving (either opens or closes). So once you see this state - check whether drawer is opened now and act accordingly:
mDrawerToggle = new ActionBarDrawerToggle(
this,
mDrawerLayout,
R.drawable.ic_drawer,
R.string.drawer_open,
R.string.drawer_close
) {
@Override
public void onDrawerStateChanged(int newState) {
if (newState == DrawerLayout.STATE_SETTLING) {
if (!isDrawerOpen()) {
// starts opening
getActionBar()
.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
} else {
// closing drawer
getActionBar()
.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
}
invalidateOptionsMenu();
}
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);