So, I just updated my codebase to Lollipop, and I'm having issues with the Action Bar. I'm using AppCompat and ActionBarActivity, and inflating a custom view. It seems that the custom view no longer takes up the whole width of the screen, leaving a thin strip on the left
Way it used to look
Way it looks now
This is the code I'm using to set up the Action Bar. Anyone have any ideas?
final ActionBar actionBar = getSupportActionBar();
if(actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(false);
actionBar.setDisplayShowHomeEnabled(false);
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setDisplayShowCustomEnabled(true);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setCustomView(R.layout.action_bar_content_search_custom_view);
actionBar.setBackgroundDrawable(null);
// actionBar.setStackedBackgroundDrawable(null);
TextView title = (TextView) actionBar.getCustomView().findViewById(R.id.action_bar_title);
title.setText(R.string.youtube);
ImageView back = (ImageView) actionBar.getCustomView().findViewById(R.id.action_bar_back);
back.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
Edit
Taking out the custom view and changing the background now takes up the whole width. So the issue is, how can we make a CustomView take up the whole width of the ActionBar?
Looks like this is caused by the latest changes to the ActionBar
in the recent appcompat-v7
update.
It seems like that there are significant changes to how you should handle action bars.
I faced the same issue and after reading the ActionBar
documentation, and especially the following quote I found a solution.
Beginning with Android L (API level 21), the action bar may be represented by any Toolbar widget within the application layout. The application may signal to the Activity which Toolbar should be treated as the Activity's action bar. Activities that use this feature should use one of the supplied .NoActionBar themes, set the windowActionBar attribute to false or otherwise not request the window feature.
The way I see it, the AppCompat
themes were changed and on one hand seemed to break a few things but provide much more flexibility on the other.
I recommend following these steps:
.NoActionBar
style in your activity as described in the above quoteandroid.support.v7.widget.Toolbar
to your Activity layoutapp:contentInsetStart="0dp"
attribute. This is the main issue with the margin that you describe in your question<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/actionBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentInsetEnd="0dp"
app:contentInsetStart="0dp" >
</android.support.v7.widget.Toolbar>
It's usually recommended that you do that in a separate layout file and use include
in your activity layout so you will only need to customize the Toolbar in one place if used in multiple activities
<include layout="@layout/view_action_bar" />
findViewById
and setSupportActionBar
in your Activity onCreate
to signal to the Activity which Toolbar should be treated as the Activity's action bar
Toolbar actionBar = (Toolbar) findViewById(R.id.actionBar);
setSupportActionBar(actionBar);
onCreateOptionsMenu
will be added to the toolbar and it will be treated as the activity action bar.