In-depth explanation of Android unable to resolve target "Android-xx"

When using eclipse to import an existing project, you will often encounter:
Unable to resolve target 'android-xx' similar error.
This is because the imported project CodeThe project target setting of Project. properties is inconsistent with that of the current eclipse environment.
Solution:
Open the project target in the project code and set Copy codeThe Code is as follows: # project target.
Target = Android-7

Modify the adk version that you currently support.
See my environment support:
Copy codeThe Code is as follows: # project target.
Target = Android-16