Error:execution Failed For Task ':app:processdebugandroidtestmanifest'

this is what happened when i update buildToolsVersion from 26.0.1 to 26.0.2. Error:Execution failed for task ':all:processDebugAndroidTestManifest'. Manifest merger failed : Att

Solution 1:

You can override this conflict between the manifests of your application's dependencies by adding tools:replace="android:value" in the meta-data tag of your own manifest, and specifying the value you want to use.

<meta-data
    android:name="android.support.VERSION"
    android:value="26.0.2"
    tools:replace="android:value" />

P.S: If you do not already have a meta-data tag, you should add it inside your application tag in your AndroidManifest.xml

Solution 2:

The com.wdullaer:materialdatetimepicker library uses it. You can check the dependencies here.

Add in your build.gradle an explicit dependency to use the same level of support libraries:

compile'com.android.support:support-v13:26.0.2'