title: Proguard in release mode
body: <p>I am installing app through studio I guess that's <strong>instant</strong> run</p>
  
  <p>I guess my code is <strong>not</strong> <strong>shrinking</strong> since my apk is still <strong>16.1 MB</strong> large and nothing in it except sinch library..</p>
  
  <pre><code>buildTypes {    
          release {
              shrinkResources true
              minifyEnabled true
              proguardFiles getDefaultProguardFile('proguard-android.txt'),
                      'proguard-rules.pro'
          }
  }
  </code></pre>
  
  <p>Don't know if I have to add this in instant run or not.....</p>
  
  <pre><code>debug {
          minifyEnabled true
          useProguard false
          proguardFiles getDefaultProguardFile('proguard-android.txt'),
                  'proguard-rules.pro'
   }
  </code></pre>
  
  <p>but when use debug it shows this :</p>
  
  <blockquote>
    <p>Gradle build process failed with "Error:Execution failed for task
    ':app:transformClassesWithNewClassShrinkerForDebug'. > Warnings found
    during shrinking, please use -dontwarn or -ignorewarnings to suppress
    them." - Proguard #206</p>
  </blockquote>
  
  <p>Don't know if my app is in <strong>release</strong> mode if it is not in release mode then I guess I will receive <strong>same</strong> error when I am in release mode but if this is a problem of <strong>debugger</strong> and I am already in <strong>release</strong> mode then why my app isn't <strong>shrinking</strong>?</p>
  
  <p>Please help!</p>