问题
I develop android application and when create APk from this application (with Generate Signed APK) and when install this apk in other devices not install and show me this error on phone : App not installed
how can i fix it?
回答1:
This is usually caused when you have a debug apk that is signed with a different certificate and you are trying to install a release version with a different certificate. If you have a debug apk on the device try uninstalling it and try again.
回答2:
For me, **disabling Google Play Protect** options from play store app worked , and i was able to get rid of the App not Installed error.
Check the play protect option available in Google Play Store Navigation menu.
回答3:
delete build folder from your project and then build project again.. working for me
回答4:
File an appeal with Google Play Protect
Proper way to create URL to download your APK file
You need to make a direct link to download application, not to a drive. First, I uploaded my application on google drive and shared the link. after submitting the apeal I instantly received a mail
Hi
You recently submitted an appeal for an app with Google Play Protect.
The link you have provided does not lead to an APK file or the file is corrupted. Please submit a new appeal and check that you are providing the link to the correct APK file.
Thank You, Google Play Protect Team
- Upload your APK file to dropbox (didn't try any other platform)
- Get sharable link (link setting should be
Anyone with this link can view the file.) - Your link will something like this
https://www.dropbox.com/s/xxxxxxxxxx/ApplicationName.apk?dl=0 - Change the ending
apk?dl=0toapk?dl=1(Changing it to0will make the link to direct download the APK, try it yourself and see.) - Your new link should be like this
https://www.dropbox.com/s/xxxxxxxxxx/ApplicationName.apk?dl=1 - Use any URL Shortner
- Your acceptable link is ready
If you don't know what is your Application package name, then go to your AndroidManifest.xml
There will be line package="com.example.MyApplication"
After submitting it if everything goes correct you may receive a mail instantly from Google
Hi
You recently submitted an appeal for an app with Google Play Protect.
We have successfully received the appeal for your app. Our team will review the app and any information you have provided.
Thank You, Google Play Protect Team
Don't expect any other reply from Google Play Protect Team, In my case, I didn't receive any mail, But the issue was solved, After a 2-3 business day the issue was fixed while installing the application I no longer received the Blocked by Play Protect warning. and App not installed
来源：https://stackoverflow.com/questions/42608783/how-to-fix-app-not-installed-error-in-android