title: all com.android.support libraries must use the exact same version specification.Found versions 28.0.0, 26.1.0
body: <p>Hi there i am making an app of extracting text from the image using OCR API of google. I am facing the problem in dependencies issue. I think there is a conflict in versions but i don't understand how to solve it.</p>
  
  <p>I tried to update the google repository in SDK manager but still the problem has not solved.</p>
  
  <pre><code>dependencies {
  
      implementation fileTree(dir: 'libs', include: ['*.jar'])
      implementation 'com.android.support:appcompat-v7:28.0.0'
      implementation 'com.android.support.constraint:constraint-layout:1.1.3'
      testImplementation 'junit:junit:4.12'
      androidTestImplementation 'com.android.support.test:runner:1.0.2'
      androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
      implementation 'com.google.android.gms:play-services-vision:17.0.2'
  }
  </code></pre>