Refactor camera example and improve logging

Replaced print statements with logging for better output control, fixed color constant typo, removed redundant camera initialization, and set up camera retrieval on page connect. These changes streamline the example and improve maintainability.

Author: FeodorFitsner

sdk/python/examples/controls/camera/example_1.py

@@ -1,8 +1,11 @@
+import logging
 from dataclasses import dataclass, field
 
 import flet as ft
 import flet_camera as fc
 
+logging.basicConfig(level=logging.INFO)
+
 
 @dataclass
 class State:
@@ -24,7 +27,7 @@ async def main(page: ft.Page):
             alignment=ft.Alignment.CENTER,
             content=ft.Icon(
                 ft.Icons.CENTER_FOCUS_STRONG,
-                color=ft.Colors.WHITE70,
+                color=ft.Colors.WHITE_70,
                 size=48,
             ),
         ),
@@ -40,7 +43,6 @@ async def main(page: ft.Page):
 
     async def get_cameras():
         state.cameras = await preview.get_available_cameras()
-        print("Available cameras:", state.cameras)
         selector.options = [ft.DropdownOption(c.name) for c in state.cameras]
         if state.cameras and selector.value is None:
             selector.value = state.cameras[0].name
@@ -107,6 +109,8 @@ async def pause_preview():
     async def resume_preview():
         await preview.resume_preview()
 
+    page.on_connect = get_cameras
+
     page.add(
         ft.Row(
             [
@@ -123,7 +127,6 @@ async def resume_preview():
         status,
         ft.Row(
             [
-                ft.Button("Initialize", on_click=init_camera),
                 ft.Button("Take photo", on_click=take_photo),
                 ft.Button("Start streaming", on_click=start_streaming),
                 ft.Button("Stop streaming", on_click=stop_streaming),
@@ -140,8 +143,6 @@ async def resume_preview():
     )
 
     await get_cameras()
-    if selector.value:
-        await init_camera()
 
 
 if __name__ == "__main__":