Mediasessioncompat: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent

android

pendingintent

mediasectioncompat

android-12

byAnton Shumikhin·Oct 8, 2024

To make your PendingIntent compatible with Android API 31+, assign the flag FLAG_IMMUTABLE for intents that remain constant or FLAG_MUTABLE for those that could change. The update is essential for your app's notification actions, alarm services, or for any other cases where PendingIntents are used.

// Ha! Immutable, like a stone, intents that don't change 
PendingIntent pi = PendingIntent.getActivity(context, requestCode, intent, PendingIntent.FLAG_IMMUTABLE);

// Hey look! Mutable, like water, intents that might change 
PendingIntent pi = PendingIntent.getActivity(context, requestCode, intent, PendingIntent.FLAG_MUTABLE);

Based on your intent's behaviour, pick either FLAG_IMMUTABLE or FLAG_MUTABLE. This won't hinder your code's length.

Get the Dependencies Right

Make sure your dependencies are updated to match the latest Android versions. Libraries such as androidx.work:work-runtime-ktx:2.7.1 and androidx.media:media:1.4.0 having been geared towards Android 12 to prevent crashes. Utilize the ./gradlew app:dependencies command to spot and resolve conflicts easily.

Coding for compatibility across Android SDKs

Developing an app that runs smoothly across different Android versions requires a strategic mindset. By implementing conditional checks for handling PendingIntent flags across different SDKs, you can tackle PendingIntent mutability:

int flags = Build.VERSION.SDK_INT >= Build.VERSION_CODES.S ?
            PendingIntent.FLAG_MUTABLE :
            PendingIntent.FLAG_UPDATE_CURRENT;
PendingIntent pi = PendingIntent.getActivity(context, requestCode, intent, flags);

In this code snippet, the flags are selected based on the operating system's version. This approach guarantees functionality across older and newer Android devices, making your app timeless (well, sort of).

Steps for Media Button Handling and MediaSessionCompat

When migrating to Android 12 (SDK 31), steering clear of pending MediaSessionCompat issues is essential. While creating a PendingIntent for media button events, it's crucial to set the correct mutability flags:

MediaSessionCompat mediaSession = new MediaSessionCompat(context, TAG);
mediaSession.setMediaButtonReceiver(pi);

Use the updated constructor or methods in the MediaSessionCompat that accept PendingIntent parameters to adapt to the new Android 12 PendingIntent requirements.

Savvy up with Industry Insights

When facing complex API amendments, borrow wisdom from industry experts. Recognize contributions from maestros such as CommonsWare and Adelino, who've suggested practical solutions for PendingIntent mutability issues. Dive into code examples and chat threads to make sense of the necessary updates for MediaSessionCompat compatibility.

explain-codes / Android / Mediasessioncompat: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent

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