The Flutter popup Menu tutorial describes how to an add popup menu for switching between images.
The images will be downloaded first from the network. After that, a local copy of the image will be cached for faster reload.
This flutter development tutorial follows on from flutter download image tutorial.
Knowledge of the dart programming language is not required, but the experience of an object orientated programming language is recommended. Such as Java, C++, Kotlin, Swift to name a few.
In this flutter development tutorial we will cover:
- Creating collection class for Photo properties
- Creating a list of classes
- Adding popup menu to app bar
- How to return an item from the popup menu
- How to refresh the widget in the display
In the following flutter development tutorial, we will describe how to add a popup menu to the app bar.
The photos list will be provided to the PopupMenuButton. With the selected value to be used by the _select method. The _select method will update the display with the new image properties.
The following flutter development tutorial will describe how to use the drawer for switching between images.