Guide to Solve different kinds of Problems (Page - 22)

In this example, we are going to show you the way to hide or show any widget programmatically in Flutter. To achieve this functionality on Flutter, you must have a knowledge of State management and using conditional statements in widgets.

In this example, we are going to show you the way to get screen height and width and apply the sizing of child widgets according to the percentage of Screen height and width. It is very important for responsive design.

When you add Vertical Divider inside Row, Wrap widget, it may not display, or display with irregular height. The main reason of this reason is the unrestricted height of the parent widget of Row/Wrap widget.

In this example, we are going to show you the easiest way to add a horizontal or vertical divider, change its color, thickness, and width in the Flutter app.

While adding Listview inside Scroll view or building grid layout, you may encounter ʺVertical viewport was given unbounded heightʺ Error on Flutter. This caused, when there is the unbounded height on the parent widget.

The splash screen is the best way to introduce your app to the users. You can add a custom splash screen to your flutter app with duration to display. In this example, we are going to show you the easiest way to create your own splash screen without depending on any packages.

It is annoying sometimes to see an auto comment or auto close labels generated by Dart extension on Visual Studio code during Flutter App building. The auto comment/closing labels look like below.

Are you adding features to switch theme brightness and color on your app without much coding? Then have a look at the example below. In this example, we are going to show you the easiest way to switch the theme and primary color of your app.

A single app may have lots of routes or pages, but to make an App bar and Drawer for every page is very hard and not a good practice. So you should make a reusable App bar and drawer layout so that, you can manage only a single code for every page.

During building an app, sometimes we need to show content according to condition using if..else statement. But in Flutter, we can’t place if…else statement directly on child attribute because it accepts only widgets.

In this example, you will learn to convert or show HTML markup as a widget in Flutter. We have used flutter_widget_from_html flutter package to convert HTML to the widget, and it also caches the images.

Onboarding screens are a great way to introduce your app to users. But making screen, design, animations are very hard for beginners. Here I have explained to make the Introduction screen easily with very few codes.