1+ from time import sleep
2+ import os
3+ from jnius import autoclass
4+
5+ # -*- coding: utf-8 -*-
6+
7+ """
8+ Basic structure for an Android background service using Python.
9+ This typically requires a framework like Kivy (with python-for-android)
10+ or Chaquopy to bridge Python with the Android OS.
11+ """
12+
13+
14+ # Using jnius (common with Kivy/python-for-android) to interact with Android APIs
15+ try :
16+ # Example: Get access to the service context if running under PythonService
17+ # PythonService = autoclass('org.kivy.android.PythonService')
18+ # service = PythonService.mService
19+ pass
20+ except ImportError :
21+ print ("jnius not found. Android-specific features may not work." )
22+ autoclass = None
23+ service = None
24+
25+ def run_service_logic ():
26+ """Contains the main logic for the background service."""
27+ print ("Android Service: Starting background logic." )
28+
29+ # Example: Retrieve an argument passed when starting the service
30+ # This environment variable is often set by the service starter (e.g., Kivy's PythonService)
31+ service_argument = os .environ .get ('PYTHON_SERVICE_ARGUMENT' , 'No argument provided' )
32+ print (f"Android Service: Received argument: { service_argument } )
33+
34+ # Main service loop
35+ counter = 0
36+ while True :
37+ print (f"Android Service: Running... Loop count: { counter } )
38+
39+ # --- Add your background tasks here ---
40+ # Examples:
41+ # - Polling a server for updates
42+ # - Processing data in the background
43+ # - Interacting with hardware (requires specific permissions and APIs)
44+ # - Sending notifications (requires Android API calls via jnius/plyer)
45+
46+ # Example: Show a Toast notification (requires context and jnius)
47+ # if autoclass and service:
48+ # try:
49+ # Toast = autoclass('android.widget.Toast')
50+ # CharSequence = autoclass('java.lang.CharSequence')
51+ # context = service.getApplicationContext()
52+ # if context:
53+ # def show_toast():
54+ # text = CharSequence(f"Service running {counter}")
55+ # toast = Toast.makeText(context, text, Toast.LENGTH_SHORT)
56+ # toast.show()
57+ # # Toasts must be shown on the UI thread
58+ # PythonActivity = autoclass('org.kivy.android.PythonActivity')
59+ # PythonActivity.mActivity.runOnUiThread(show_toast)
60+ # except Exception as e:
61+ # print(f"Android Service: Error showing toast - {e}")
62+
63+ # Sleep for a period before the next iteration
64+ sleep (15 ) # Sleep for 15 seconds
65+ counter += 1
66+
67+ # Add conditions to stop the service if necessary,
68+ # although services are often designed to run until explicitly stopped.
69+ # For example:
70+ # if should_stop_service():
71+ # print("Android Service: Stopping condition met.")
72+ # break
73+
74+ print ("Android Service: Background logic finished." )
75+
76+ if __name__ == "__main__" :
77+ # This block is executed when the script is run directly.
78+ # When launched as an Android service by the framework (e.g., Kivy),
79+ # the framework typically imports and runs this script, potentially
80+ # calling a specific function or just executing the module level code.
81+ # The `run_service_logic()` function contains the core tasks.
82+ run_service_logic ()
83+
84+ # --- Notes on Deployment as an Android Service ---
85+ #
86+ # 1. **Framework:** Use Kivy (with buildozer) or Chaquopy.
87+ # 2. **Configuration (Buildozer Example):**
88+ # In `buildozer.spec`, define the service:
89+ # ```
90+ # services = YourServiceName:./src/fiscalberryservice/android.py
91+ # ```
92+ # Replace `YourServiceName` and adjust the path.
93+ # 3. **Starting the Service:**
94+ # Start it from your main app (e.g., Kivy `main.py`) using Android Intents via jnius:
95+ # ```python
96+ # from jnius import autoclass
97+ # import os
98+ #
99+ # PythonActivity = autoclass('org.kivy.android.PythonActivity')
100+ # activity = PythonActivity.mActivity
101+ # Intent = autoclass('android.content.Intent')
102+ #
103+ # service_name = 'YourServiceName' # Must match buildozer.spec
104+ # service_class_name = f'{activity.getPackageName()}.Service{service_name}'
105+ #
106+ # intent = Intent()
107+ # intent.setClassName(activity, service_class_name)
108+ #
109+ # # Pass data to the service (optional)
110+ # argument = "Data for the service"
111+ # intent.putExtra('PYTHON_SERVICE_ARGUMENT', argument)
112+ # os.environ['PYTHON_SERVICE_ARGUMENT'] = argument # Set env var too
113+ #
114+ # activity.startService(intent)
115+ # ```
116+ # 4. **Permissions:** Add necessary permissions to `buildozer.spec`:
117+ # ```
118+ # android.permissions = INTERNET, FOREGROUND_SERVICE, ...
119+ # ```
120+ # `FOREGROUND_SERVICE` is often required for long-running tasks on newer Android versions.
121+ # 5. **Foreground Service:** For long-running tasks, consider running as a foreground service
122+ # to prevent Android from killing it. This requires showing a persistent notification.
123+ # You'll need more jnius code to create the notification channel and notification itself.
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