Why isn't the title centered on the toolbar?

I'm trying to add a custom toolbar, I want to count the cart icon, so I added a relative layout to the toolbar widget, when I didn't add a relative layout to the toolbar, the title appeared in the center, but now removing the relative position causes a problem when adding the textview icon to cart, can anyone suggest what to do in this situation? Toolbar.xml   

<android.support.v7.widget.Toolbar
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:id="@+id/mytoolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentInsetStart="0dp"
app:contentInsetRight="0dp"
app:contentInsetLeft="0dp"
android:clipToPadding="false"
app:contentInsetStartWithNavigation="0dp"
app:contentInsetEndWithActions="0dp"
android:background="@color/header">

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

<TextView
    android:id="@+id/displaytexttoolbar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:layout_gravity="center"
    android:layout_margin="@dimen/activity_vertical_margin"
    android:text="TEXT_VIEW"
    android:textColor="@color/white" />

<RelativeLayout
    android:layout_gravity="right"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">


    <ImageView
        android:id="@+id/cart_imagetoolbar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:layout_gravity="end"
        android:layout_margin="@dimen/activity_vertical_margin"
        android:src="@drawable/cart_mobile_white" />

    <TextView
        android:id="@+id/tvBadge"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_alignParentRight="true"
        android:layout_gravity="right"
        android:background="@drawable/cart_circle_mobile"
        android:gravity="center"
        android:textColor="@color/white"
        android:visibility="visible" />



</RelativeLayout>

</RelativeLayout>

      

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3 answers


It has to do with yours layout_margin

. Try the following:



<TextView
    android:id="@+id/displaytexttoolbar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_marginLeft|Right="?attr/actionBarSize"
    android:text="TEXT_VIEW"
    android:textColor="@color/white" />

      

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Try this code:

use Framelayout

instead RelativeLayout

and apply android:gravity="center"

for title

    <android.support.v7.widget.Toolbar 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:id="@+id/mytoolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="?attr/colorPrimary"
    android:contentInsetLeft="0dp"
    android:contentInsetStart="0dp"
    android:theme="@style/ThemeToolbar"
    app:contentInsetLeft="0dp"
    app:contentInsetStart="0dp">

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/displaytexttoolbar"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="@dimen/activity_vertical_margin"
            android:gravity="center"
            android:text="TEXT_VIEW"
            android:textColor="@color/color_black" />

        <ImageView
            android:id="@+id/cart_imagetoolbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_gravity="end"
            android:layout_margin="@dimen/activity_vertical_margin"
            android:src="@mipmap/ic_launcher" />

        <ImageView
            android:id="@+id/tvBadge"
            android:layout_width="20dp"
            android:layout_height="20dp"
            android:layout_alignParentRight="true"
            android:layout_gravity="right"
            android:gravity="center"
            android:src="@mipmap/ic_launcher"
            android:textColor="@color/color_black"
            android:visibility="visible" />
    </FrameLayout>

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

      



Output

enter image description here

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The default value for contentInsetStart (left padding on the toolbar) is 16dp.

Change it to

android:contentInsetStart="0dp"
android:contentInsetLeft="0dp"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"

      

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