In my app I have a toolbar which is working perfectly fine in my MainActivity.
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/toolbar"
android:background="@color/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:theme="@style/Base.ThemeOverlay.AppCompat.Dark.ActionBar">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/toolbar_item_counter"
android:id="@+id/toolbar_tv_itemCounter"
android:textSize="18dp"
android:textColor="#ffffff"
android:textStyle="bold"/>
</RelativeLayout>
But when I try to inflate this menu
<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/item_accept"
android:title="Accept"
android:icon="@drawable/ic_action_accept"
app:showAsAction="always"/>
</menu>
With this code
public class AddActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
toolbar.inflateMenu(R.menu.menu_input_accept);
TextView toolbartext = (TextView) findViewById(R.id.toolbar_tv_itemCounter);
toolbartext.setVisibility(View.INVISIBLE);
}
}
It gives me this
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.Toolbar.inflateMenu(int)' on a null object reference
fatal error which I don't understand. I also tried to overwrite the onCreateOptionsMenu method and use the MenuInflater there like I do in my MainActivity but it changes nothing. I included my toolbar in the xml like I did in my main activity:
<include layout="@layout/toolbar_layout"
android:id="@+id/include" />
