Add automatic Android SDK detection

sdk_setter/sdk_screen.py

@@ -6,7 +6,7 @@
 
 from screen_manager.screen_constants import HOME_SCREEN
 from screen_manager.utils import navigate_to_screen
-from sdk_setter.utils import store_sdk_directory as store_sdk
+from sdk_setter.utils import trigger_store_sdk_directory, check_default_android_sdk_location
 from sdk_setter.utils import get_stored_sdk_directory
 
 
@@ -46,7 +46,11 @@ def __init__(self, **kwargs):
 
         self.add_widget(layout)
 
+    def on_pre_enter(self, *args):
+        if check_default_android_sdk_location():
+            navigate_to_screen(self.manager, HOME_SCREEN)
+
     def store_sdk_directory(self, *args):
-        stored_successfully = store_sdk(self.sdk_location_text_input.text)
+        stored_successfully = trigger_store_sdk_directory(self.sdk_location_text_input.text)
         if stored_successfully:
             navigate_to_screen(self.manager, HOME_SCREEN)

sdk_setter/utils.py

@@ -1,3 +1,5 @@
+import os
+import platform
 import shelve
 from os import path
 
@@ -7,13 +9,31 @@
 
 def android_sdk_location_is_valid(directory_path):
     directory_path = optionally_expand_user_directory(directory_path)
+    return is_valid_adb_file(directory_path)
 
-    if path.exists(directory_path):
-        platform_tools_directory = path.join(directory_path, "platform-tools")
+
+def check_default_android_sdk_location():
+    # Define default paths for different OS
+    os_default_paths = {
+        'Windows': 'C:\\Users\\%USERNAME%\\AppData\\Local\\Android\\Sdk\\',
+        'Darwin': '/Users/$USER/Library/Android/sdk/',  # macOS
+        'Linux': '/home/$USER/Android/Sdk/'
+    }
+
+    current_os = platform.system()
+    default_android_sdk_path = os_default_paths.get(current_os)
+    if default_android_sdk_path:
+        # Replace placeholders with actual environment variables
+        default_android_sdk_path = os.path.expandvars(default_android_sdk_path)
+        if is_valid_adb_file(default_android_sdk_path):
+            return store_sdk_directory(default_android_sdk_path)
+
+
+def is_valid_adb_file(android_sdk_directory):
+    if path.exists(android_sdk_directory):
+        platform_tools_directory = path.join(android_sdk_directory, "platform-tools")
         adb_file = path.join(platform_tools_directory, "adb")
         return path.isfile(adb_file)
-    else:
-        return False
 
 
 def optionally_expand_user_directory(directory_path):
@@ -35,12 +55,10 @@ def get_adb():
         return adb_file
 
 
-def store_sdk_directory(sdk_location):
-    location_to_check = optionally_expand_user_directory(sdk_location)
-    if android_sdk_location_is_valid(location_to_check):
-        with shelve.open("settings") as storage:
-            storage["sdk_directory"] = location_to_check
-        return True
+def trigger_store_sdk_directory(sdk_location):
+    sdk_location = optionally_expand_user_directory(sdk_location)
+    if android_sdk_location_is_valid(sdk_location):
+        return store_sdk_directory(sdk_location)
     else:
         Popup(
             title='Error',
@@ -57,3 +75,9 @@ def store_sdk_directory(sdk_location):
             title_size="20sp"
         ).open()
         return False
+
+
+def store_sdk_directory(sdk_location):
+    with shelve.open("settings") as storage:
+        storage["sdk_directory"] = sdk_location
+    return True