Check following applications which facilitate take input from user like TextField, FilePicker, ImagePicker, DatePicker and videos
Validation can be done to FormField like Textfield using simple regex validator
An external package can be used to enable reading files from an Android or iOS device
Platform: Android & iOS
Check Flutter File Picker Application
An external Flutter package can be used to facilitate image uploads from an Android or iOS device
Platform: Android & iOS
Check Flutter Image Picker Application
Check Flutter application which provides date picker and time picker widgets with Material and Cupertino styled appearance
Platform: Android & iOS
Check Flutter Date Picker Application
A Searchable dropdown provides options which can be selected and an input field to search and narrow down the options
Platform: Android & iOS
Check Flutter Searchable Dropdown Application
Form validation in Flutter can be implemented using simple regex validators
Platform: Android & iOS
Check Flutter Form Validation Application