First things first, let's make sure our Glide library is up-to-date. Open up your build.gradle file and tweak the dependencies section like this:

dependencies {
    implementation 'com.github.bumptech.glide:glide:latest.version'
    annotationProcessor 'com.github.bumptech.glide:compiler:latest.version'
}

Just swap out latest.version with the actual latest version number of Glide. Easy peasy, right?

Next, let's get our app looking sharp in dark mode. Head over to the res/values-night/styles.xml file. If it’s not there, go ahead and create it. Here, you can customize the theme or components to fit dark mode.

Example:

<resources>
    <style name="AppTheme" parent="Theme.AppCompat.DayNight">
        <!-- Customize colors for dark mode -->
        <item name="colorPrimary">#121212</item>
        <item name="colorPrimaryDark">#000000</item>
        <item name="colorAccent">#bb86fc</item>
    </style>
</resources>

And don’t forget to make sure your AndroidManifest.xml is using this theme:

<application
        android:theme="@style/AppTheme">
    ...
</application>

Dark mode might need different images. If you have separate images for dark mode, place them in the res/drawable-night folder.

Example:

res/
  drawable/
    image.png
  drawable-night/
    image.png  // Dark mode version of the image

Now, let's load those images with Glide, making sure it adapts based on the current theme. You can do this in an Activity or Fragment.

Example in Kotlin:

val isNightMode = resources.configuration.uiMode and 
                  Configuration.UI_MODE_NIGHT_MASK == Configuration.UI_MODE_NIGHT_YES

val imageView: ImageView = findViewById(R.id.imageView)
val imageResource = if (isNightMode) {
    R.drawable.image_dark_mode  // Resource for dark mode
} else {
    R.drawable.image_light_mode  // Resource for light mode
}

Glide.with(this)
    .load(imageResource)
    .into(imageView)

This snippet checks if dark mode is on and loads the right images accordingly. Pretty neat, huh?

If you want to get fancy, you can let users switch themes on the fly.

Example in Kotlin:

fun toggleTheme(isDarkMode: Boolean) {
    val mode = if (isDarkMode) {
        AppCompatDelegate.MODE_NIGHT_YES
    } else {
        AppCompatDelegate.MODE_NIGHT_NO
    }
    AppCompatDelegate.setDefaultNightMode(mode)
}

You can call this function when the user toggles a switch in the app to change the theme without restarting the activity.

Remember, adapting images for dark mode makes the user experience so much better by ensuring everything looks cohesive.