title: Android Studio cannot find symbol error
body: <p>I'm sorry if this is a noob question but I have recently moved from Eclipse to Android Studio and have never used Gradle before. I have imported one project from eclipse which depends on 3 libraries (UIL,androidBootStrap,androidLockpattern).The libraries can be seen under the root directory of my android studio project,but when i click build i keep getting the following errors</p>
  
  <pre><code>G:\AndroidstudioProjects\P3 Authentication\p3Authentication\src\main\java\com\p3authentication\Captcha_Verfication.java
  Error:(11, 45) error: cannot find symbol class Settings
  Error:(25, 18) error: cannot find symbol variable MATRIX_WIDTH
  Error:(27, 11) error: package Settings does not exist
  Error:(28, 49) error: cannot find symbol variable ACTION_VERIFY_CAPTCHA
  Error:(47, 28) error: cannot find symbol variable RESULT_FAILED
  Error:(58, 25) error: cannot find symbol variable EXTRA_RETRY_COUNT
  G:\AndroidstudioProjects\P3 Authentication\p3Authentication\src\main\java\com\p3authentication\Compare_Pattern.java
  Error:(35, 18) error: cannot find symbol variable MATRIX_WIDTH
  Error:(37, 49) error: cannot find symbol variable ACTION_COMPARE_PATTERN
  Error:(39, 38) error: cannot find symbol variable EXTRA_PATTERN
  Error:(70, 28) error: cannot find symbol variable RESULT_FAILED
  Error:(75, 28) error: cannot find symbol variable RESULT_FORGOT_PATTERN
  Error:(86, 25) error: cannot find symbol variable EXTRA_RETRY_COUNT
  G:\AndroidstudioProjects\P3 Authentication\p3Authentication\src\main\java\com\p3authentication\Create_Pattern.java
  Error:(26, 18) error: cannot find symbol variable MATRIX_WIDTH
  Error:(28, 49) error: cannot find symbol variable ACTION_CREATE_PATTERN
  Error:(41, 45) error: cannot find symbol variable EXTRA_PATTERN
  G:\AndroidstudioProjects\P3 Authentication\p3Authentication\src\main\java\com\p3authentication\Pattern_Captcha.java
  Error:(12, 45) error: cannot find symbol class Settings
  Error:(23, 11) error: package Settings does not exist
  Error:(24, 49) error: cannot find symbol variable ACTION_VERIFY_CAPTCHA
  Error:(57, 28) error: cannot find symbol variable RESULT_FAILED
  Error:(68, 25) error: cannot find symbol variable EXTRA_RETRY_COUNT
  Note: G:\AndroidstudioProjects\P3 Authentication\p3Authentication\src\main\java\com\p3authentication\LockerService.java uses or overrides a deprecated API.
  Note: Recompile with -Xlint:deprecation for details.
  Error:Execution failed for task ':p3Authentication:compileDebugJava'.
  &gt; Compilation failed; see the compiler error output for details.
  </code></pre>
  
  <p>I know all these classes and Variables exist because when i run my application from eclipse it runs perfectly without any problems. Any idea how to overcome this is gratefully accepted </p>