The latest version of eclipse (the version downloaded and installed online without manual plug-in) solved by yourself may be a problem of eclipse, or it may be win 10, or the local configuration is incorrect.

The specific error location is as follows:

Before the apk is signed and packaged, the project is clean, resulting in the loss of the dex file in the bin directory of the project. When packaging apk, my eclipse version may directly use the files under bin ~ ~

The right solution:

Before signing and packaging, you need to run to ensure that the files in the bin directory exist.