title: Useful Android system resources
body: <p>Android comes with lots of system resources (<code>android.R</code>) that can be used to save you time and make your application lighter.</p>
  
  <p>For example, I recently discovered that Android provides localized strings for Yes (<code>android.R.string.yes</code>), No (<code>android.R.string.no</code>), Cancel (<code>android.R.string.cancel</code>) and Ok (<code>android.R.string.ok</code>), among other strings.</p>
  
  <p>What other system resources do you recommend using? Or is there a reason to avoid using system resources?</p>
  
  <p>Edit: As noted by Tomas, some of this resources might not produce the results you would expect (particularly, <code>android.R.string.yes/no</code> returns <code>OK/Cancel</code> instead of <code>Yes/No</code>, as reported <a href="http://code.google.com/p/android/issues/detail?id=3713" rel="noreferrer">here</a>). For greater control, you can copy system resources from the Android source code.</p>