What Is "program Type Already Present"?

When i try to build my project.i got this error Program type already present: android.support.v4.accessibilityservice.AccessibilityServiceInfoCompat Message{kind=ERROR, text=Pr

Solution 1:

The Program Type Already Present error Raised whenever your project has the repeating libraries or same library with a different version. You can Check the Dependancies Graph by running

gradlew -q dependencies

or

gradle -q dependencies

(Required the Gradle in your class path)

Just sort out the repeating libraries, remove repeating one and error will go away.

Solution 2:

I solve this problem by using same version of appcompact and design

 implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'
 implementation 'com.android.support:design:28.0.0-alpha1'

but now i got this error

Program type already present: android.support.v4.app.FragmentTransitionCompat21$1

Solution 3:

 implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'

downgrade the version of dependency to

 implementation 'com.android.support:appcompat-v7:27.1.0'

and also add the design dependency

 implementation 'com.android.support:design:27.1.0'

check it once this works for me

Solution 4:

In place of these 2 dependencies

implementation 'me.dm7.barcodescanner:zxing:1.9'
implementation 'com.journeyapps:zxing-android-embedded:3.0.2@aar'

add these 2 lines

implementation('me.dm7.barcodescanner:zxing:1.9'){
   exclude module: 'support-v4'
}

implementation ('com.journeyapps:zxing-android-embedded:3.0.2@aar'){
   exclude module: 'support-v4'
}

hopefully, this will work