android update project -p .
あなたの問題を解決するかもしれません。実行android update project -p .
すると、このような O/P になる場合があります。
Updated local.properties
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build.xml: Failed to find version-tag string. File must be updated.
In order to not erase potential customizations, the file will not be automatically regenerated.
If no changes have been made to the file, delete it manually and run the command again.
If you have made customizations to the build process, the file must be manually updated.
It is recommended to:
* Copy current file to a safe location.
* Delete original file.
* Run command again to generate a new file.
* Port customizations to the new file, by looking at the new rules file
located at <SDK>/tools/ant/build.xml
* Update file to contain
version-tag: custom
to prevent file from being rewritten automatically by the SDK tools.
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Updated file ./proguard-project.txt
It seems that there are sub-projects. If you want to update them
please use the --subprojects parameter.
もしそうなら、このコマンドを試してくださいandroid update project -p . -s