ANDROID DISABLE CHANGE FONT SIZE IN APP

Introduction

For Android app developers, it's important to know how to control the font size within your application. However, it's also important to give users the option to adjust their font size preference for better accessibility.

In some cases, you may want to disable the ability for users to change the font size in your app. This could be due to design constraints or to ensure the user experience is consistent across devices. In this guide, we'll go over the steps you can take as a programmer to disable changing font size in your Android application.

Solution

There are several ways to disable changing font size in your Android app, but we'll cover two options here:

Option 1: Set a fixed font size

One way to disable changing font size is to set a fixed font size in your application's XML layout file. By setting a fixed font size, users will not be able to increase or decrease the size of the font. Here's an example XML code snippet:

<TextView
    android:id="@+id/my_textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="18sp"
    android:text="Hello World!" />

In this snippet, the font size is fixed at 18sp. You can adjust this to whatever size you would like.

Option 2: Override the system font size

Another option is to override the system font size setting for your application by adding a custom style to your app's theme. Here's an example:

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="android:textAppearance">@style/CustomTextAppearance</item>
</style>
 
<style name="CustomTextAppearance">
    <item name="android:textSize">18sp</item>
</style>

In this example, we've added a custom style called "CustomTextAppearance" that sets the font size to 18sp. This will override the system font size setting for your application.

Conclusion

By following these steps, you can easily disable changing font size in your Android application. However, it's important to consider accessibility when designing your app, so be sure to provide alternate ways for users to adjust font size if needed.