[android] Android: Create a toggle button with image and no text

Can I replace the toggle text with an image

No, we can not, although we can hide the text by overiding the default style of the toggle button, but still that won't give us a toggle button you want as we can't replace the text with an image.

How can I make a normal toggle button

Create a file ic_toggle in your res/drawable folder

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

    <item android:state_checked="false"
          android:drawable="@drawable/ic_slide_switch_off" />

    <item android:state_checked="true"
          android:drawable="@drawable/ic_slide_switch_on" />

</selector>

Here @drawable/ic_slide_switch_on & @drawable/ic_slide_switch_off are images you create.

Then create another file in the same folder, name it ic_toggle_bg

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:id="@+android:id/background"  
          android:drawable="@android:color/transparent" />

    <item android:id="@+android:id/toggle"
          android:drawable="@drawable/ic_toggle" />

</layer-list>

Now add to your custom theme, (if you do not have one create a styles.xml file in your res/values/folder)

<style name="Widget.Button.Toggle" parent="android:Widget">
   <item name="android:background">@drawable/ic_toggle_bg</item>
   <item name="android:disabledAlpha">?android:attr/disabledAlpha</item>
</style>

<style name="toggleButton"  parent="@android:Theme.Black">
   <item name="android:buttonStyleToggle">@style/Widget.Button.Toggle</item>
   <item name="android:textOn"></item>
   <item name="android:textOff"></item>
</style>

This creates a custom toggle button for you.

How to use it

Use the custom style and background in your view.

  <ToggleButton
        android:id="@+id/toggleButton"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="right"
        style="@style/toggleButton"
        android:background="@drawable/ic_toggle_bg"/>