Why do most fields (class members) in Android tutorial start with `m`?

Why do most fields (class members) in Android tutorial start with `m`?

android coding-style

android

Using try/catch for preventing app from crashes

java android design-patterns coding-style try-catch

android

Member variables vs setArguments in Fragments

java android coding-style android-fragments

android

Error retrieving parent for item: No resource found that matches the given name '@android:style/TextAppearance.Holo.Widget.ActionBar.Title'

android coding-style

android

Theme/Style is not applied when inflater used with ApplicationContext

android coding-style themes

android

Coding Style Standards for Android

android coding-style standards

android

android dynamically change style at runtime

android coding-style

android

To use layout_marginLeft in a button style applied as a theme?

android button coding-style themes margins

android

Android Code Style in Intellij Idea / Android Studio

android eclipse coding-style intellij-idea android-studio

android

Clean Architecture: How to reflect the data layer's changes in the UI

java android architecture coding-style

android

Where can I find checkstyle config for Android Coding Style?

android coding-style checkstyle

android

Did anyone create the Java Code Formatter Profile for Eclipse IDE that conforms to the Android Code Style Rules?

android eclipse coding-style

android

Check Android Permissions in a Method

android annotations coding-style lint error-suppression

android

can I change the look and feel of the clickablespan

android coding-style textview

android

Using "m" prefix for variables in Kotlin

java android kotlin coding-style

android