Today, I update my Android studio to 2.3, and I update gradle to 3.4.1. But when I build my project, an error occurred: This is the error So I add \" buildToolsVersion \'25.0.0\
it's an unnecessary warning for the support:multidex, add this:
//noinspection AndroidLintGradleCompatible compile 'com.android.support:multidex:1.0.1'