Make your Flutter projects more readable and effective with extensions!
Readability and practicality of the code is very important in Flutter. Today we will write a few extensions and see their use.
1.Extension for image files
We all add image files to our files. And many of us define them as Image.asset(‘assets/images/image.png’) . Instead, we can do this;
And we can use this extension as follows;
2.Extension for form validate and List operations
Suppose you have an email form and you want to make sure that the user has entered the “@” symbol for it. Or you have a list and you want to reverse it. Here is an extension for the easy way;
3.Extension for empty padding
With SizedBox, we can give space between two widgets. For example SizedBox(height:10). But you don’t want to see this everywhere, there has to be a simple way around it. Here it is;
And to use it, all we have to do is;
4.Extension for parse operations
There are times when you want to convert an int value to a double or one of those double expressions you want to convert an int value.
You can use it like this;
Extensions, that’s it for now. Now let’s write the expressions that we will use on many pages of our project as a function.
1.
I was using this structure in many places and I thought;
“Since I use it all the time, can’t I just make it easier?”
And I did.
2.
And when using;
3.
We may want to show some long texts as many characters as we want.
4.We also have a method to make the date format from the API suitable for displaying in the interface :)
Instead of writing them all over the place, we do them easily with a function and we can use them wherever we want.
5.We had a BLoC structure for authentication transactions. And we wanted to restrict some builds for non logged in user. Here is the function that makes it effective;
That’s all for now. Thank you for reading. Hope it will help you in your next project :)
You can also access this beautiful article of Veli Bacık, who inspired me to write this article, from the link below.
https://medium.com/flutter-community/season-two-flutter-short-but-golds-8cff8f4b0b29
