Error : App not installed (Android.Forms)

Question

I wrote a app or android with xamarin.forms. To send it to the beta tester I clicked on the android project and then on 'archive'. Then on 'deplay' 'ad-hoc'. I get a file com...apk When I try to install it on a tablet it says 'app not installed'. Whats the problem ? Grettings Bernd

Answer 1

It was the wrong command. Now I used :

pm uninstall com.finderwille.einsatz.app

Result : Success

Now Installation worked !

Thank you for the help. The answer that helped me was deleted unhappily.

Leon : Thank you. Your answer was not what I want, but it helped me finding the solution and it will help me in the future.

Greetings Bernd

Answer 2

Hello,​

Welcome to our Microsoft Q&A platform!

You can try to use adb command(click the icon that I use red square in the screenshot to open the adb command) to install your apk file. If I put the apk file to D Disk, and the apk name is com.companyname.app57.apk, I used the following command to install, it worked.

   adb install D:\com.companyname.app57.apk  

Best Regards,

Leon Lu

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Answer 3

Now I read a lot about the signing and android log.

I made a log from the android device and found the sentence :

PackageManager: Package com.finderwille.einsatz.app signatures do not match previously installed version; ignoring!

Before I had the debug version on the tablet, but I deinstalled it. The new one is release and signed (I hope). How can I remove the old debug version ?

Greetings Bernd

PS .: Here is the important part of the log :

03-04 13:20:47.130  1195  3122 D PackageManager: [VERIFY] verifyPendingInstall2(7, ALLOW), uid=5012
03-04 13:20:47.130  1195  1622 D PackageManager: [VERIFY] PACKAGE_VERIFIED: 
03-04 13:20:47.130  1195  1622 D PackageManager: PackageVerificationState{
03-04 13:20:47.130  1195  1622 D PackageManager:     verifier packages=com.samsung.android.sm.devicesecurity(5012),
03-04 13:20:47.130  1195  1622 D PackageManager:     intent=Intent { act=com.samsung.android.intent.action.PACKAGE_NEEDS_VERIFICATION2 dat=file:///data/app/vmdl7830348.tmp typ=application/vnd.android.package-archive flg=0x10000001 cmp=com.samsung.android.sm.devicesecurity/.AppVerificationReceiver (has extras) }
03-04 13:20:47.130  1195  1622 D PackageManager:     others=7, false, false, false, false, false
03-04 13:20:47.130  1195  1622 D PackageManager: }
03-04 13:20:47.130  1195  1622 D PackageManager: [VERIFY] setVerifierResponse {verificationID=7, uid=5012, code=1}
03-04 13:20:47.130  1195  1622 D PackageManager: [VERIFY] packageVerificationCompletion: completed id=7
03-04 13:20:47.133  1195  1195 D PackageManager: [VERIFY] onReceive for RequiredVerifier id=7,mUid = 5012
03-04 13:20:47.149  1195  1372 I ApplicationPolicy: isApplicationExternalStorageWhitelisted:com.samsung.android.lool user:0
03-04 13:20:47.149  1195  1372 D ApplicationPolicy: isApplicationExternalStorageWhitelisted: DO is not enabled on user 0. Allowed.
03-04 13:20:47.149  1195  1372 D ActivityManager: package  com.samsung.android.lool, user - 0 is SDcard whitelisted
03-04 13:20:47.149  1195  1372 I ApplicationPolicy: isApplicationExternalStorageBlacklisted:com.samsung.android.lool user:0
03-04 13:20:47.149  1195  1372 D ApplicationPolicy: isApplicationExternalStorageBlacklisted: DO is not enabled on user 0. Allowed.
03-04 13:20:47.149  1195  1372 I ApplicationPolicy: isApplicationExternalStorageBlacklisted:com.samsung.android.lool user:0
03-04 13:20:47.149  1195  1372 D ApplicationPolicy: isApplicationExternalStorageBlacklisted: DO is not enabled on user 0. Allowed.
03-04 13:20:47.153  1195  1622 W PackageManager: verifying app can be installed or not
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PKG WL - false
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PKG BL - true
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PERM BL - true
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking SIG BL - true
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PKG WL - false
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PKG BL - true
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PERM BL - true
03-04 13:20:47.153  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking SIG BL - true
03-04 13:20:47.154  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PKG WL - false
03-04 13:20:47.154  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PKG BL - true
03-04 13:20:47.154  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking PERM BL - true
03-04 13:20:47.154  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  Checking SIG BL - true
03-04 13:20:47.154  1195  1622 D ApplicationPolicy: isApplicationInstallationEnabled :  enabled true
03-04 13:20:47.155  1195  1622 W PackageManager: Package com.finderwille.einsatz.app signatures do not match previously installed version; ignoring!
03-04 13:20:47.157  1195  1622 D PackageManager: result of install: -7{265970863}

Answer 4

There is an Android app (My APK) that shows the installation error detail (if any).
Open My APK -> Select an APK -> Click menu -> Install (MAI)

It does not fix the issue but it shows the reason why that APK fails to install.