use intent url for deeplinking on android

launch.html

@@ -1639,6 +1639,50 @@
         );
       }
 
+      /* ============================================================
+       * JITSI ANDROID URL
+       * ============================================================ */
+
+      /*
+       * Die Android-App registriert "org.jitsi.meet", nicht das
+       * Desktop-Schema. Chrome & Co. verlangen intent://, ohne App
+       * bietet Chrome den Play-Store-Eintrag aus "package=" an.
+       * Firefox ignoriert intent://, kennt aber das Custom-Schema.
+       */
+
+      function createAndroidIntentUrl(room) {
+        return (
+          "intent://" +
+          CONFIG.jitsiHost +
+          "/" +
+          encodeURIComponent(room) +
+          "#Intent;scheme=org.jitsi.meet;package=org.jitsi.meet;end"
+        );
+      }
+
+      function createAndroidAppUrl(room) {
+        return (
+          "org.jitsi.meet://" +
+          CONFIG.jitsiHost +
+          "/" +
+          encodeURIComponent(room)
+        );
+      }
+
+      /* ============================================================
+       * URL NACH PLATTFORM/BROWSER
+       * ============================================================ */
+
+      function selectProtocolUrl(room) {
+        if (detectOperatingSystem() !== "android") {
+          return createAppUrl(room);
+        }
+
+        return detectBrowser() === "firefox"
+          ? createAndroidAppUrl(room)
+          : createAndroidIntentUrl(room);
+      }
+
       /* ============================================================
        * DETECT OPERATING SYSTEM
        * ============================================================
@@ -1772,7 +1816,7 @@
           return;
         }
 
-        const protocolUrl = createAppUrl(room);
+        const protocolUrl = selectProtocolUrl(room);
         const browserUrl = createBrowserUrl(room);
 
         /*
@@ -2288,7 +2332,7 @@ END:VCALENDAR`;
             room: room,
             operatingSystem: detectOperatingSystem(),
             browser: detectBrowser(),
-            protocol: createAppUrl(room),
+            protocol: selectProtocolUrl(room),
             browserUrl: createBrowserUrl(room)
           }
         );