android: handle on-chain/lightning URI on app open

fixes #6352

electrum/gui/kivy/main_window.py

@@ -201,11 +201,31 @@ class ElectrumWindow(App):
         self.send_screen.set_ln_invoice(invoice)
 
     def on_new_intent(self, intent):
-        data = intent.getDataString()
-        if intent.getScheme() == 'bitcoin':
-            self.set_URI(data)
-        elif intent.getScheme() == 'lightning':
-            self.set_ln_invoice(data)
+        data = str(intent.getDataString())
+        if str(intent.getScheme()).lower() in ('bitcoin', 'lightning'):
+            self._process_invoice_str(data)
+
+    _invoice_intent_queued = None  # type: Optional[str]
+    def _process_invoice_str(self, invoice: str) -> None:
+        if not self.wallet:
+            self._invoice_intent_queued = invoice
+            return
+        if not self.send_screen:
+            self.switch_to('send')
+            self._invoice_intent_queued = invoice
+            return
+        if invoice.lower().startswith('bitcoin:'):
+            self.set_URI(invoice)
+        elif invoice.lower().startswith('lightning:'):
+            self.set_ln_invoice(invoice)
+
+    def _maybe_process_queued_invoice(self, *dt):
+        if not self.wallet:
+            return
+        invoice_queued = self._invoice_intent_queued
+        if invoice_queued:
+            self._invoice_intent_queued = None
+            self._process_invoice_str(invoice_queued)
 
     def on_language(self, instance, language):
         Logger.info('language: {}'.format(language))
@@ -377,6 +397,7 @@ class ElectrumWindow(App):
         self._trigger_update_interfaces = Clock.create_trigger(self.update_interfaces, .5)
 
         self._periodic_update_status_during_sync = Clock.schedule_interval(self.update_wallet_synchronizing_progress, .5)
+        self._periodic_process_queued_invoice = Clock.schedule_interval(self._maybe_process_queued_invoice, .5)
 
         # cached dialogs
         self._settings_dialog = None

electrum/gui/kivy/uix/screens.py

@@ -177,12 +177,10 @@ class SendScreen(CScreen):
 
     kvname = 'send'
     payment_request = None  # type: Optional[PaymentRequest]
-    payment_request_queued = None  # type: Optional[str]
     parsed_URI = None
 
     def set_URI(self, text: str):
         if not self.app.wallet:
-            self.payment_request_queued = text
             return
         try:
             uri = parse_URI(text, self.app.on_pr, loop=self.app.asyncio_loop)
@@ -197,7 +195,7 @@ class SendScreen(CScreen):
         self.payment_request = None
         self.is_lightning = False
 
-    def set_ln_invoice(self, invoice):
+    def set_ln_invoice(self, invoice: str):
         try:
             invoice = str(invoice).lower()
             lnaddr = lndecode(invoice, expected_hrp=constants.net.SEGWIT_HRP)
@@ -213,9 +211,6 @@ class SendScreen(CScreen):
     def update(self):
         if self.app.wallet is None:
             return
-        if self.payment_request_queued:
-            self.set_URI(self.payment_request_queued)
-            self.payment_request_queued = None
         _list = self.app.wallet.get_invoices()
         _list.reverse()
         payments_container = self.ids.payments_container

electrum/gui/qt/request_list.py

@@ -96,7 +96,7 @@ class RequestList(MyTreeView):
             self.update()
             return
         if req.is_lightning():
-            self.parent.receive_payreq_e.setText(req.invoice)
+            self.parent.receive_payreq_e.setText(req.invoice)  # TODO maybe prepend "lightning:" ??
             self.parent.receive_address_e.setText(req.invoice)
         else:
             self.parent.receive_payreq_e.setText(self.parent.wallet.get_request_URI(req))