http://blog.sina.com.cn/s/blog_6714fba701018nup.html
android程序出现了奇怪的错误 Field requires API level 5 (current min is 1): ......
解决办法：
Right click on the project folder > Android tools > Clear Link Markers
英文网站找的，细节就看不懂了。参见
http://*.com/questions/10322482/android-lint-erroneously-thinks-min-sdk-version-is-1
（转）Field requires API level 5 (current min is 1) 问题的解决,布布扣,bubuko.com