[android] RelativeLayout center vertical

I want to make a list row layout. This layout has a imageview in the most left, a textview right next to the imageview, and a imageview in the most right. I want all of them are center vertical.

<RelativeLayout
    android:layout_width="fill_parent" android:layout_height="100dp"
    android:gravity="center_vertical"
    >
    <ImageView 
        android:id="@+id/icon"
        android:layout_width="50dp" android:layout_height="50dp"
        android:layout_gravity="center_vertical" />
    <TextView 
        android:id="@+id/func_text" android:layout_toRightOf="@id/icon"
        android:layout_width="wrap_content" android:layout_height="100dp"
        android:layout_gravity="center_vertical" />
    <ImageView 
        android:layout_width="50dp" android:layout_height="50dp"
        android:layout_alignParentRight="true"
        android:layout_gravity="center_vertical"
        android:src="@drawable/arrow" />
</RelativeLayout>

I also tried to add android:layout_centerVertical="true" to the textview, but the result is the textview align bottom with the two imageview. I tried this in android 4.2 emulator. Anybody could help me about this?

Try aligning top and bottom of text view to one of the icon, this will make text view sharing same height as them, then set gravity to center_vertical to make the text inside text view center vertically.

<TextView 
        android:id="@+id/func_text" android:layout_toRightOf="@id/icon"
        android:layout_alignTop="@id/icon" android:layout_alignBottom="@id/icon"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:gravity="center_vertical" />

This maybe because the textview is too high. Change android:layout_height of the textview to wrap_content or use

android:gravity="center_vertical"

use

 android:layout_centerVertical="true"

For me, I had to remove

<item name="android:gravity">center_vertical</item>

from RelativeLayout, so children's configuration would work:

<item name="android:layout_centerVertical">true</item>

If View's height/width = wrap_content

use:

android:layout_centerHorizontal="true"
android:layout_centerVertical="true"

If View's height/width = match_parent

use:

android:gravity="center_vertical|center_horizontal"

Adding both android:layout_centerInParent and android:layout_centerVertical work for me to center ImageView both vertical and horizontal:

<ImageView
    ..
    android:layout_centerInParent="true"
    android:layout_centerVertical="true"
    />

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

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentStart="true"
                android:layout_centerInParent="true"
                android:layout_gravity="center_vertical"
                android:layout_marginTop="@dimen/main_spacing_extra_big"
                android:orientation="horizontal">

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"

                    android:fontFamily="@font/noto_kufi_regular"
                    android:text="@string/renew_license_municipality"
                    android:textColor="@color/sixth_text"
                    android:textSize="@dimen/main_text" />

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:fontFamily="@font/noto_kufi_regular"
                    android:text="@{RenewLicenseBasicInfoFragmentVM.tvMunicipality}"
                    android:textColor="@color/sixth_text"
                    android:textSize="@dimen/main_text" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentEnd="true"
                android:layout_centerInParent="true"
                android:layout_gravity="center_vertical"
                android:layout_marginTop="@dimen/main_spacing_extra_big"
                android:orientation="horizontal">

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="end"
                    android:fontFamily="@font/noto_kufi_regular"
                    android:text="@string/renew_license_license_number"
                    android:textColor="@color/sixth_text"
                    android:textSize="@dimen/main_text" />

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="end"
                    android:fontFamily="@font/noto_kufi_regular"
                    android:text="@{RenewLicenseBasicInfoFragmentVM.tvLicenseNum}"
                    android:textColor="@color/sixth_text"
                    android:textSize="@dimen/main_text" />
            </LinearLayout>`enter code here`

        </RelativeLayout>

        <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_marginHorizontal="5dp"
        android:layout_marginBottom="5dp"
        android:background="@drawable/default_button">

        <ImageView
            android:layout_width="20dp"
            android:layout_height="20dp"
            android:layout_alignParentLeft="true"
            android:layout_centerInParent="true"
            android:layout_marginStart="15dp"
            android:src="@drawable/google" />

        <Button
            android:id="@+id/btnGmailLogin"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@null"
            android:paddingHorizontal="15dp"
            android:text="@string/gmail_login_button_text"
            android:textAllCaps="false"
            android:textColor="@color/black" />
    </RelativeLayout>

This is working for me.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rell_main_bg"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#096d74" > 

<ImageView 
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_centerVertical="true"
    android:layout_centerHorizontal="true"
    android:src="@drawable/img_logo_large"
    android:contentDescription="@null" />

</RelativeLayout>