title: Logcat displays nothing when used from Runtime.exec
body: <p>I'm running the command</p>
  
  <pre><code>logcat -d AndroidRuntime:E *:S
  </code></pre>
  
  <p>When ran from adb on my computer, it displays all the things it should. When I try to run it from an Android application with</p>
  
  <p><code>Runtime.getRuntime().exec("logcat -d AndroidRuntime:E *:S");</code></p>
  
  <p>and print the output, it won't display anything except the headers.</p>
  
  <p>How can I fix this?</p>