Android set custom Action Bar

Continue previous tutorial

Step 1:

Go to build.gradle file add this dependency:

compile 'com.android.support:design:25.2.0'

Step 2:

Go to styles.xml file add this two line of code

<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/>

Step 3:

Go to the res > layout folder create toolbar_normal.xml file and put this code inside the file

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.AppBarLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    android:id="@+id/app_bar"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:theme="@style/AppTheme.AppBarOverlay">
    <android.support.v7.widget.Toolbar

        android:id="@+id/toolbar"

        android:layout_width="match_parent"

        android:layout_height="?attr/actionBarSize"

        android:background="?attr/colorPrimary"

        app:popupTheme="@style/AppTheme.PopupOverlay"/>
</android.support.design.widget.AppBarLayout>

Step 4:

Go to the res > menu folder create menu_main.xml file and put this code inside the file

<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:android="http://schemas.android.com/apk/res/android"

      xmlns:app="http://schemas.android.com/apk/res-auto">
    <item android:id="@+id/action"

          android:title="Testing"

          app:showAsAction="always"/>

</menu>

Step 5:

You can implement the toolbar in your layout file like this already

<include layout="@layout/toolbar_normal"/>

Step 6:

Go to your java file and implement this two override methods

@Override public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
 }

@Override public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home: onBackPressed();
    break; case R.id.action: break;
    }
    return super.onOptionsItemSelected(item);
}

Next go in to the onCreate method write this code

 
Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);

Output:

Reminder: the title label can be set in the AndroidManifest file with the activity label.

Extra: