A third Android build, fcm (io.coinos.beta, "Coinos Beta"): the wallet in its own WebView, as the webview build, with Firebase Cloud Messaging for push on phones with Google Play Services — no distributor app to install. A user on the TWA APK found launching slow next to Minibits (2026-11-05); measured on a Pixel 9, a WebView paints ~0.7 s sooner than a cold Chrome. This build installs beside the TWA for a side-by-side trial before deciding whether it replaces it. Fcm asks for the token and stores "fcm:<token>" as the push endpoint, which reaches the page down the UnifiedPush road (?up= on the next launch, or written straight into the page's localStorage once it has loaded, since the token arrives after the first load starts); nwcpush (coinosv3-server 0c50417) sends an fcm: endpoint through Firebase. FcmService hands a message's "body" to the same handler UnifiedPush messages use (PushReceiver.onPush: wake the wallet off-screen, notify unless it answered a silent request). Firebase is set up in code (CoinosApp → Fcm.init) from values build.gradle reads out of app/google-services.json (gitignored) — without it the build still builds and falls back to UnifiedPush. The webview and fdroid builds get a stub Fcm (src/nofcm) and carry no Google code; the notification permission is asked when Firebase or a distributor can deliver; CoinosHost.env reports app "fcm"

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01VMan6Ts5Tktega8VbLg31q

1 files changed, 18 insertions, 10 deletions

diff --git a/android/app/src/main/java/io/coinos/app/PushReceiver.java b/android/app/src/main/java/io/coinos/app/PushReceiver.java
index ce3e3f0..b14de53 100644
--- a/android/app/src/main/java/io/coinos/app/PushReceiver.java
+++ b/android/app/src/main/java/io/coinos/app/PushReceiver.java
@@ -49,14 +49,7 @@ public class PushReceiver extends BroadcastReceiver {
       case Push.ACTION_MESSAGE: {
         byte[] bytes = intent.getByteArrayExtra(Push.EXTRA_BYTES_MESSAGE);
         String body = bytes != null ? new String(bytes) : intent.getStringExtra(Push.EXTRA_MESSAGE);
-        // On the WebView build the wallet lives in THIS app's storage, so it
-        // can be woken and told to deal with whatever arrived. On the TWA
-        // build the wallet is Chrome's and out of reach, so the notification
-        // is the whole of what we can do.
-        boolean woke = Wake.start(context, body);
-        // A payment or a message is news whether or not we handled it; a
-        // wallet-connect request is not, unless nobody is going to answer it.
-        if (!woke || !isSilent(body)) notify(context, body);
+        onPush(context, body);
         Push.ack(context, intent.getStringExtra(Push.EXTRA_ID));
         break;
       }
@@ -65,8 +58,23 @@ public class PushReceiver extends BroadcastReceiver {
     }
   }
 
+  /**
+   * A push, however it came (a UnifiedPush distributor, or Firebase in the
+   * fcm build — FcmService): the same JSON either way.
+   */
+  static void onPush(Context context, String body) {
+    // On the WebView build the wallet lives in THIS app's storage, so it
+    // can be woken and told to deal with whatever arrived. On the TWA
+    // build the wallet is Chrome's and out of reach, so the notification
+    // is the whole of what we can do.
+    boolean woke = Wake.start(context, body);
+    // A payment or a message is news whether or not we handled it; a
+    // wallet-connect request is not, unless nobody is going to answer it.
+    if (!woke || !isSilent(body)) notify(context, body);
+  }
+
   /** Requests the woken wallet answers by itself need no notification. */
-  private boolean isSilent(String payload) {
+  private static boolean isSilent(String payload) {
     try {
       JSONObject j = new JSONObject(payload == null ? "{}" : payload);
       String reason = j.optString("reason", j.optString("type", ""));
@@ -79,7 +87,7 @@ public class PushReceiver extends BroadcastReceiver {
    * describes; anything we don't recognise still gets a notification, because
    * silence is the one answer that's always wrong here.
    */
-  private void notify(Context c, String payload) {
+  private static void notify(Context c, String payload) {
     String title = c.getString(R.string.app_name);
     String text = c.getString(R.string.push_generic);
     String deepLink = null;