How to change the toolbar name and put icon with tool bar

Question

I have just made the app using android studio template of Navigation view. Its all working fine but I have the following two requirements

1. I want to center the toolbar title.
2. I want to put the image beside the title.

Here is my xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.abdulsalam.lahoreqalander.MainActivity">

<android.support.design.widget.AppBarLayout
    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>

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

<!--<android.support.design.widget.FloatingActionButton-->
    <!--android:id="@+id/fab"-->
    <!--android:layout_width="wrap_content"-->
    <!--android:layout_height="wrap_content"-->
    <!--android:layout_gravity="bottom|end"-->
    <!--android:layout_margin="@dimen/fab_margin"-->
    <!--android:src="@android:drawable/ic_dialog_email" />-->

Problem :

I do not know where the title string is saved, I have checked the string.xml and there is the app name and that is exactly showing on the toolbar title.

So Any suggestion where can I change the title string without changing the app name , In fact I want to change it custom and also how to put the image beside it.

Note I am using the template made by Android studio

.

Answer 1

You can implement like this in XML.

<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">

    <LinearLayout
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="horizontal"
     android:layout_gravity="center">

          <ImageView
            android:src="@mipmap/ic_launcher"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

          <TextView
            style="@style/TextAppearance.Widget.AppCompat.Toolbar.Title"
            android:text="@string/app_name"
            android:background="?attr/selectableItemBackground"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </LinearLayout>

</android.support.v7.widget.Toolbar>