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I'm trying to run the following command to test the release version of my RN app locally:

react-native run-android --variant=release

Unfortunately, this fails to load the release version of the app into the emulator b/c it's failing with the following exception:

FAILURE: Build failed with an exception.

  • What went wrong: Execution failed for task ':app:installRelease'.

    com.android.builder.testing.api.DeviceException: com.android.ddmlib.InstallException: INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.socialmerge signatures do not match previously installed version; ignoring!

Based on some googling I found the following thread:

Package signatures do not match the previously installed version

Some recommend uninstalling the previously installed version like this:

adb uninstall "com.MyDomain.MyApp"

I tried that as well as this:

adb uninstall com.MyDomain.MyApp

But both of these adb uninstall attempts return [DELETE_FAILED_INTERNAL_ERROR]. The following thread discusses the [DELETE_FAILED_INTERNAL_ERROR] error and some suggest disabling "Instant Run" in Android Studio. I have AS 3.5.2 and the closest match I can find to that are the following options which are unchecked by default:

  • "Automatically perform "Run" when Apply Changes fails
  • "Automatically perform "Run" when Apply Code Changes fails"

I'm assuming that these ^^^ options replace the previous "Instant Run" option but both of these options are unselected by default so it appears that disabling "Instant Run" is no longer relevant to debugging this issue. Any recommendations on next steps for debugging this issue?

user10307666
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    Did you try uninstalling the app manually from the phone/emulator ? – Saadi Nov 18 '19 at 16:54
  • how would I go about doing that? for example,I don't see a home screen launch icon that I can press for an uninstall option in the emulator – user10307666 Nov 18 '19 at 16:59
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    Swipe up at the bottom, you will see the list of apps. Long tap on the app to see the option. – Saadi Nov 18 '19 at 17:12

3 Answers3

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I figured out this issue:

adb uninstall is case sensitive

user10307666
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uninstall app in your device first then try 

react-native run-android --variant=release
Mike M
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Shivo'ham 0
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I run into the same issue and I got it solved by wiping the data of the simulator.

Dev1n.101
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