Android error-remove '@ override' annotation error and import project compilation error with jar package or so package

1. Remove '@ override' annotation Error

After a new project is imported, the "remove '@ override' annotation" error may occur because before jdk1.6, "@ override" only works for super class, but added support for interfaces after 1.6, therefore, if the imported project is based on jdk1.5, this problem may occur.

Solution: Set the compiler in eclipse to JDK 1.6.

① Project-properties-Java compiler-select 1.6

② Window-preferences-Java-compiler-select 1.6

2. An error occurred while importing a project with a jar package or so file.

Dragged down from gitCodeAfter importing eclipse, all problems seem to have been solved, but errors occurred when compiling to the mobile phone, and no errors were displayed in the code. It has been a long time problem, A closer look at the original libs directory contains jar packages and so library files, but all jar packages and so library files are actually under the armeabi directory, so the solution is: import the jar files in the armeabi directory to the libs (armeabi is in the libs directory) directory. It seems that only the library files can be put under armeabi, so that compilation is okay.

In addition, you need to note that if the project displays a red exclamation mark, one of the solutions is: project-build path-configure build path-libraries-delete the so file except the jar package (the project can only import jar files, not so files ), then, clean the project.