Creating a Transparent Activity in Android

Creating a Transparent Activity in Android

22 May 2024 Stephan Petzl Leave a comment Tech-Help

Creating a transparent Activity in Android can be a useful feature for many applications. Whether you want to display content over an existing Activity or create a floating window effect, this guide will walk you through the steps to achieve this.

Step-by-Step Guide to Creating a Transparent Activity

To create a transparent Activity, follow these steps:

1. Define a Transparent Theme

First, you need to define a transparent theme in your res/values/styles.xml file. If the file does not exist, create it. Add the following style:

<?xml version="1.0" encoding="utf-8"?>
  <style name="Theme.Transparent" parent="android:Theme">
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowIsFloating">true</item>
    <item name="android:backgroundDimEnabled">false</item>


This style makes the window translucent, removes the title, and ensures the background is transparent.

2. Apply the Theme to Your Activity

Next, apply the newly created theme to your Activity in the AndroidManifest.xml file. Add the following attribute to your Activity declaration:

<activity android:name=".SampleActivity" android:theme="@style/Theme.Transparent">


3. Additional Considerations

For some applications, you might need to set the theme dynamically in your Java code. Here is a brief example:

protected void onCreate(Bundle savedInstanceState) {


Ensure that you call setTheme() before super.onCreate() to apply the theme correctly.


By following these steps, you can create a transparent Activity in your Android application. This can be particularly useful for overlay effects or creating floating windows.

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