Could you help me why installing an apk says: The app is not installed. (Tested another android phone with the same result)

I have created the default flutter app with the same command: "flutter build apk" and it installs correctly.

My app using google_ sign_in package and signed with keystore. On the very same andrid device the usb driven application from VS Code runs perfectly.

CodePudding user response：

first uninstall the older app which is installed by debugging usb Then Install the release apk

The signature mismatches with debug and release apk so you may get app not installed msg!!!

CodePudding user response：

Run flutter build apk --release for release version and go to your AppName>build>app>outputs>apk>release you will find it there.