Cause: buildOutput.apkData must not be null

Question

My android application using Kotlin is throwing this exception when I try to Run \'app\' in the emulator o in my cellphone. When I build my project it runs well, with no err

Answer 1

Updating to Android Studio 3.4.?, i get the message

Cause: buildOutput.apkData must not be null

looking for an answer i found the procedure:

Build -> Clean Project

but it doesn´t worked, i know that this procedure will delete the content into the /build directory but for my experience it doesn´t work in all cases, so i tried the "raw" way, deleting the directory:

/app/build/ 

then i rebuild the project and it worked.

Answer 2

I was also annoyed by the same bug. But changing my Signed apk destination from c/users/project/app to c/users/project worked for me.

Answer 3

For Android Studio 3.5 & 3.6 Update. (APK signed issue)

Step 1: I have resolved this issue by modifying the Destination Folder location.

Before

c:\user\folder\project\app

After

c:\user\folder\project\apk

> **For Android Studio `3.4` Update.**

Step 1: After update Android Studio 3.4 you need to add all the dependency that used in your module or library in your app-level build.gradle.

Step 2: Clean Project(Build > Clean Project)

Step 3: Rebuild Project(Build > Rebuild Project)

Now, Your Project will compile Perfectly.

Answer 4

I was using Android Studio 3.5 beta 2 and I was having the exact same error but only on my release build. After trying every other solution I found, the only way I was able to compile again was to go back to Android Studio 3.4.

Answer 5

It works for me:

1. delete build folder from your project manually.

2. in terminal of android studio type this command

if windows user

gradlew clean build

if linux user

./gradlew clean build

Answer 6

Seems cleaning the project may resolve the issue, but for me it worked like this.

File->sync project with gradle files.