Android Project R file missing solution

There are many reasons why R files are missing, here are a few workarounds:

1. Select the project, click Project-clean, clean up the project;

2. Select the project and right-click on Android tools-fix Project Properties;

3. Select the item, right-select Properties-android, select the appropriate version, click OK;

This will regenerate the R file.

Some articles said, the first two steps R file can be regenerated, but sometimes do the first two steps R file, or not, then try the last step, I here is a successful generation!

If your friends encounter other problems, welcome to discuss!

Android Project R file missing solution