I have added a Toolbar
on top of all of my activities. But I wanted the title to be in the centre, so as per some suggestions on SO, I created a TextView
inside the Toolbar
and I was able to put it in the centre.
Now, when I am trying to add an Up Action following this guide Adding an Up Action | Android Developers , I do not get any UpButton.
Is this because of using a TextView
inside of the Toolbar
? Because I read on SO that the Toolbar is basically a View
and can be configured just like any other View
, so I don't get why this should be a problem.
If that is the reason, and I'd have to use the default
android:title="My Title" attribute in for the
Toolbar` , is there any other way to put it in the centre ? Thanks for any help you'd be able to provide.
XML Layout
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_width="match_parent">
<android.support.v7.widget.Toolbar
android:id="@+id/lifeline_toolbar"
android:elevation="4dp"
android:background="@android:color/background_dark"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize">
<TextView
android:layout_gravity="center_horizontal"
android:text="Lifeline"
android:textStyle="bold"
android:textSize="18sp"
android:id="@+id/lifeline_toolbar_title"
android:textColor="@android:color/white"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</android.support.v7.widget.Toolbar>
<LinearLayout>
</LinearLayout>
<LinearLayout>
</LinearLayout>
</LinearLayout>
Java Code
public class ll_home extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ll_home);
Toolbar toolbar = (Toolbar) findViewById(R.id.lifeline_toolbar);
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
}
}
You need to set the getSupportActionBar().setHomeButtonEnabled(true); enable the Up Action button
Toolbar toolbar = (Toolbar) findViewById(R.id.lifeline_toolbar);
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
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