【Flutter】signatures do not match the previously installed version

adb install app-release.apk

Performing Streamed Install
adb: failed to install app-release.apk: Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.example.wx_demo signatures do not match the previously installed version; ignoring!]xample.wx_demo signatures do not match the previously installed version; ignoring!]

原因：签名与以前安装的版本不符;
处理：手机里找到同名的APP删除，然后重新安装运行命令行。