Improve error handling

internal_filesystem/apps/com.lightningpiggy.displaywallet/assets/captureqr.py

@@ -143,6 +143,7 @@ class Camera(Activity):
             if not result:
                 self.status_label.set_text(status_label_text_searching)
             else:
+                
                 self.stop_qr_decoding()
                 result = remove_bom(result)
                 result = print_qr_buffer(result)

internal_filesystem/apps/com.lightningpiggy.displaywallet/assets/displaywallet.py

@@ -7,6 +7,7 @@ from captureqr import Camera
 class MainActivity(Activity):
     
     def __init__(self):
+        super().__init__()
         self.wallet = None
         self.receive_qr_data = None
         self.destination = None
@@ -114,6 +115,7 @@ class MainActivity(Activity):
 # Used to list and edit all settings:
 class SettingsActivity(Activity):
     def __init__(self):
+        super().__init__()
         self.prefs = mpos.config.SharedPreferences("com.lightningpiggy.displaywallet")
         self.settings = [
             {"title": "Wallet Type", "key": "wallet_type", "value_label": None, "cont": None},
@@ -344,6 +346,8 @@ class SettingActivity(Activity):
         self.finish()
 
 class FullscreenQR(Activity):
+    # No __init__() so super.__init__() will be called automatically
+
     def onCreate(self):
         receive_qr_data = self.getIntent().extras.get("receive_qr_data")
         qr_screen = lv.obj()

internal_filesystem/lib/mpos/apps.py

@@ -228,9 +228,6 @@ class Activity:
         self.result = None
         self._result_callback = None
 
-    def getIntent(self):
-        return self.intent
-
     def onCreate(self):
         pass
     def onStart(self, screen):
@@ -247,18 +244,33 @@ class Activity:
     def setContentView(self, screen):
         mpos.ui.setContentView(self, screen)
 
+    def startActivity(self, intent):
+        ActivityNavigator.startActivity(intent)
+
+    def initError(self, e):
+        print(f"WARNING: You might have inherited from Activity with a custom __init__() without calling super().__init__(). Got AttributeError: {e}")
+
+    def getIntent(self):
+        try:
+            return self.intent
+        except AttributeError as e:
+            self.initError(e)
+
     def setResult(self, result_code, data=None):
         """Set the result to be returned when the activity finishes."""
-        self.result = {"result_code": result_code, "data": data or {}}
+        try:
+            self.result = {"result_code": result_code, "data": data or {}}
+        except AttributeError as e:
+            self.initError(e)
 
     def finish(self):
         mpos.ui.back_screen()
-        if self._result_callback and self.result:
-            self._result_callback(self.result)
-            self._result_callback = None  # Clean up
-
-    def startActivity(self, intent):
-        ActivityNavigator.startActivity(intent)
+        try:
+            if self._result_callback and self.result:
+                self._result_callback(self.result)
+                self._result_callback = None  # Clean up
+        except AttributeError as e:
+            self.initError(e)
 
 class Intent:
     def __init__(self, activity_class=None, action=None, data=None, extras=None):