joplin-notes/joplin notion extension/Web Development/Flutter/Extras.md

Extras

• adb

  • this -k flag means it will keep cache and app data so making it more safer
  • adb shell
  • adb shell pm list packages to list installed packages
  • adb uninstall <package_name> : to uninstall app
  • adb shell pm uninstall -k --user 0 <application_name> to safely install package and not uninstall system istead
  • adb shell pm disable-user --user 0 com.miui.android.fashiongallery to disable for user in case cant be deleted for user

• video players https://pub.dev/packages/video_player_media_kit/example media_kit_ex.zip

• pip (Picture in picture) https://pub.dev/packages/flutter_in_app_pip https://pub.dev/packages/pip_view (more scores than upper one)

• audio play background https://pub.dev/packages/just_audio_background

• some design kits like material design designs ui.txt

• file system

  • https://docs.flutter.dev/cookbook/persistence/reading-writing-files
  • in android for accessing external storage need a permission handler to grant storage like this https://pub.dev/packages/permission_handler

    Future<void> storagePermissions() async {
      // var status = await Permission.storage.request();
      var status = await Permission.storage.request();
      // Permission.storage.request();
      // var status = await Permission.camera.request();
    
      if (status.isDenied) {
    	print('storage permission denied');
      } else if (status.isGranted) {
    	print('storage permission granted');
      }
    }
    

  • also in AndroidManifest.xml , add following for below android 11

   <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  

  for above andoid 11

  <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
  

  • by default only photos and videos access is granted so for full grant add following in manifest <application android:requestLegacyExternalStorage="true">

• forms https://docs.flutter.dev/cookbook/forms/text-input

• fetch data from internet https://docs.flutter.dev/cookbook/networking/fetch-data

• parsing html https://pub.dev/packages/html parsing_with_new.dart

• toast in flutter https://docs.flutter.dev/cookbook/design/snackbars

• dropdown menu https://api.flutter.dev/flutter/material/DropdownMenu-class.html

• to add support for platforms use flutter create --platforms=ios,android foo foo here is path of directory containing pubspec.yml

     

Snipppets

• popupmenu https://betterprogramming.pub/popup-menu-customization-in-flutter-aa8827f6ce39 popupmenu.dart
• contextmenu and rendering popmenu anywhere on screen rightclick_simulation.dart