title: Android - How to check Proguard obfuscation has worked?
body: <p>I have obfuscated my apk, but the file size has only been reduced from 12MB to 10.5MB.</p>
  
  <p>The reason it is only a relatively small reduction may be because my app uses a couple of large libraries, but is there any way I can check the level of obfuscation that has been performed?</p>
  
  <p>Just in case, this is my proguard-project.txt file...</p>
  
  <pre><code># To enable ProGuard in your project, edit project.properties
  # to define the proguard.config property as described in that file.
  #
  # Add project specific ProGuard rules here.
  # By default, the flags in this file are appended to flags specified
  # in ${sdk.dir}/tools/proguard/proguard-android.txt
  # You can edit the include path and order by changing the ProGuard
  # include property in project.properties.
  #
  # For more details, see
  #   http://developer.android.com/guide/developing/tools/proguard.html
  
  # Add any project specific keep options here:
  
  # If your project uses WebView with JS, uncomment the following
  # and specify the fully qualified class name to the JavaScript interface
  # class:
  #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
  #   public *;
  #}
  
  -dontwarn twitter4j.**
  </code></pre>
  
  <p>...and the libraries I'm using are <code>android-support-v4.jar</code>, <code>acra-4.5.0.jar</code> and <code>twitter4j-core-4.0.2.jar</code>.</p>