[Feature] Android: also register for ACTION_REVIEW so a camera app's "last shot" button opens Immich

[pkoevesdi]

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request.

• Yes

The feature

Follow-up to #8116, which asked for Immich to become the system photo viewer. That was
implemented in #26109 (merged 2026-06-03, shipped in v3.0.0) — but only for
android.intent.action.VIEW. The part of the original request that covers camera apps is still
missing: in #8116 (comment by Atemu, 2024-03-21) the suggestion was explicitly
com.android.camera.action.REVIEW, with Fossify Gallery's manifest as the reference.

Camera apps do not send VIEW for their thumbnail / "last shot" button. They send
com.android.camera.action.REVIEW (the legacy AOSP action most OEM cameras still use) or
android.provider.action.REVIEW (MediaStore.ACTION_REVIEW). Immich 3.2.1 registers neither,
so it never appears for that button. Google Photos registers both plus REVIEW_SECURE, Fossify
Gallery registers both.

There is a second reason to register for REVIEW. On Android the default app for an intent is
stored together with the list of all activities that matched when the user picked it, and the
default is discarded as soon as that list changes:

PackageManager: Result set changed, dropping preferred activity for Intent
{ act=android.intent.action.VIEW ... typ=image/* } type image/*

On my phone VIEW + image/* has 27 candidate activities, while image/jpeg and image/png
have 25. So opening a JPEG from a mail client or a PNG from a file manager silently trims the
stored list to 25, and the next image/* intent — the one a camera app sends — finds 27 against
a stored 25, drops the default and brings up the chooser again. REVIEW has almost no other
handlers, so a default set for it would actually stick.

Suggested change, following Fossify Gallery:

mobile/android/app/src/main/AndroidManifest.xml, next to the existing viewer filters:

<intent-filter android:label="View in Immich">
  <action android:name="com.android.camera.action.REVIEW" />
  <action android:name="android.provider.action.REVIEW" />
  <category android:name="android.intent.category.DEFAULT" />
  <data android:mimeType="image/*" />
  <data android:mimeType="video/*" />
</intent-filter>

mobile/android/app/src/main/kotlin/app/alextran/immich/viewintent/ViewIntentPlugin.kt, the
guard in consumeViewIntent():

if (intent?.action !in setOf(
      Intent.ACTION_VIEW,
      MediaStore.ACTION_REVIEW,
      "com.android.camera.action.REVIEW",
    )) {

ACTION_REVIEW_SECURE deliberately left out, that one is for the lock screen.

Observed on: Fairphone 5, Android 15, Immich 3.2.1.

Platform

• Server
• Web
• Mobile