Error While creating new project with android studio 3.0.1

Question

Error:Execution failed for task \':app:preDebugAndroidTestBuild\'.

Conflict with dependency \'com.android.support:support-annotations\' in project \':app\

Answer 1

you can also go for this one.

    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})

instead of this,

androidTestCompile 'com.android.support.test:runner:0.4.1'
androidTestCompile 'com.android.support.test:rules:0.4.1'
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.1'
androidTestCompile 'com.android.support.test.espresso:espresso-contrib:2.2.1'

Answer 2

Based on the documentation:

Both your app APK and its test APK share the same classpath. So, you can get a build error if both APKs depend on different versions of the same library.

So the fix would be to change your

com.android.support:appcompat-v7:26.1.0

to

com.android.support:appcompat-v7:27.1.1