# Android : Override System Font Size

> If get to know something new by reading my articles, don't forget to endorse me on [LinkedIn](https://www.linkedin.com/in/rommansabbir/)

From `Android 14` , the system font size can be set to up to 200%. But you might want to keep the application font size according to your requirement.

Here is, how you can `override` the system font size in your **Android** application easily.

### First : Extension API

Add this `extension` **API** in your `application`.

```kotlin
/**
 * Override system font size for current application.
 *
 * When device font size is set to max/larger size, this API can help
 * to override the system font size and set a custom font size.
 *
 *
 * Ex: If the device font size exceeded your expected font size,
 * you can override the font size with this API.
 *
 * @param newBase [Context]
 * @param newValue [Float]
 * @param overrideValue [Float]
 *
 * @return [Boolean] to verify success or not.
 */
fun ComponentActivity.overrideFontSize(
    newBase: Context?,
    newValue: Float,
    overrideValue: Float,
): Boolean = try {
    Configuration(newBase?.resources?.configuration).apply {
        if (this.fontScale > overrideValue) {
            this.fontScale = newValue
        }
        applyOverrideConfiguration(this)
    }
    true
} catch (e: Exception) {
    e.printStackTrace(); false
}
```

### Second : Override

`override` `attachBaseContext(newBase: Context?)` **API** in your `BaseActivity`.

```kotlin
abstract class BaseActivity() : AppCompactActivity{
    //Override and call overrideFontSize api to set custom font size.
    override fun attachBaseContext(newBase: Context?) {
        val isFontOverwrite: Boolean = overrideFontSize(newBase, 1.3F, 1.3F)
        debugLogOnly("Is font override done: $isFontOverwrite")
        super.attachBaseContext(LocaleHelper.onAttach(newBase))
    }
}
```

Happy Coding...

### %%\[linkedin\]