Dropdowns are in disable state in csc picker flutter - flutter

When added boxdecorations the state and place dropdowns are in disable state. In enter link description here
in flutter but when using default decoration everything works fine

Related

Persist multi selected ListTiles with Shared Preferences

My problem is summarized perfectly with this solution:
Flutter ListTile enable multi-select onLongPress
My app is using shared Preferences and Provider to produce a todo list.
After restarting my app, Shared-Preferences returns/persists my list, but the SELECTED TILES go back to their initial state, UNSELECTED.
How can I persist those tiles with color/icon changes using Shared Preferences?
Using the solution above as a code example

Textformfield selection controls in flutter

This image shows flutter app selection controls
But I want selection controls like Gmail.
How can I made it.

Change Background Image in Flutter according to theme

I have different pages, and one FloatingActionBar, whensoever I am clicking on it, the theme of the application is getting changed. But I also want to change the background image of the app. How can I do that?

Flutter hot reload not working in android studio

When I comment on New Text ('41 ') and then I press HOT RELOAD but it doesn't change, I've pressed a lot it hasn't changed, then I press the RUN button then it works fine
Anyone got the same problem?
enter image description here
Make sure you are using a stateless or stateful widget, the hot reload/refresh only works when you are dealing with state.
If you just run your main class without any state Widget, you'll have to run the application each time that you want to test a new modification.

Does flutter has any equivalent widget as android spinner?

I know there is DropDown Button but how dropdown button work is it show content in popup style and i want to implement autocomplete textfield and want to interact with textfield while suggestion come under textfield.
There is a package available for this that you can use and it works very nicely.
You can also fetch the suggestions list from API.
Here is the link
https://github.com/jebright/flutter_typeahead_plugin