Change the name of the android project (app name), the name of the project running on the mobile device and the emulator

Found in the AndroidManifest.xml file

android:label="@string/app_name"

This is the name of the app. But you can't modify it at will, you need to change it in strings.xml:

<string name="app_name">将要改写的项目名</string>

An easy way to jump to the strings.xml file is to hold down the Ctrl key in the manifest.xml file, and then click @string/app_name, a strings.xml will pop up, and if you change it, you will find that the generated package name has changed.