The type of font used in Android system applications may not be liked by users and many users may want to change them to use other fonts, in which case we need to make some adjustments. And use some features of Android systems so that we can finally change the fonts used in Android systems and applications (change font in android app ). Different types of fonts can be used in Android systems. In this tutorial, we will learn how to change fonts and apply related settings. If you want to know how to change fonts in Android systems and applications, it is recommended that you follow this article.

Here is what you will learn in this tutorial:

- How to change fonts in Android apps - How to change Widget fonts in XML- How to set fonts using Typeface- Use the Calligraphy library to change all fonts in the program- Review and answer common problems and questions in Android programming with their solutions

How to change Widget fonts in XML?

In order to be able to change the fonts and use different types of fonts available in Android systems, we must do the following.

change font in android studio project

1- Open a new project in Android Studio and select the desired name for it. The custom name selected in this tutorial is CustomFont. (change font in android studio)2- The type of activity that we must choose in this part of the training for this project is Empty Activity.3- It should be noted that font change settings can be applied without using Java language and methods, which is why there is no emphasis on choosing Java language in this part of training and project creation.4- With the introduction of API 26 in the three versions of Android, a new feature has been added that can specify different types of fonts for the widget. Specifying fonts for the widget using this method eliminates the need to use Java methods.5- In this method of specifying fonts, you can add the fontFamily property for each of the widgets and specify the fonts for them.6- To do this, we must add the appcompat-v7 library to the project. Because the appcompat-v7 library is one of the most essential to apply these settings to change the font.7-  Add a directory with the desired font name to res.
Res> New> Android Resource Directory
8- Then we have to save our desired font file using .ttf or .otf extensions and add it to this directory. It is better to be careful in choosing fonts and use fonts that are slang and have a positive effect on user interface design.

Note:

It is better to use lower case letters, numbers and lines in naming and choosing names for fonts. We can choose the names we want for the fonts and we will use the names we have chosen for them in the definition in this project. 

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