title: Android. Process 'command > '....aapt.exe'' finished with non-zero > exit value 1
body: <p>Added 25 png files to drawable folder. When I try to run app, I am getting this error:</p>
  
  <blockquote>
    <p>Error:Execution failed for task ':app:processDebugResources'.
    com.android.ide.common.process.ProcessException:
    org.gradle.process.internal.ExecException: Process 'command
    'D:\ANDROID\sdk\build-tools\22.0.0\aapt.exe'' finished with non-zero
    exit value 1</p>
  </blockquote>
  
  <p>R is shown as error:</p>
  
  <blockquote>
    <p>Cannot resolve symbol R</p>
  </blockquote>
  
  <p>I tried to <strong>Project->Clear Project</strong>, but no effect. But when delete those png files, everything working correctly. The problem is here, I need to use those png files in my application.</p>
  
  <p>How to solve this problem?</p>
  
  <p>PNG files</p>
  
  <p><img src="https://i.stack.imgur.com/0XzkH.jpg" alt="enter image description here"></p>