title: Error on Settings.System
body: <p>I am getting an error every time that Settings.System is in the code it just says <code>System cannot be resolved</code> or is <code>not a field</code>. How can I fix this?</p>
  
  <pre><code>public class InternetSpeedup extends Activity {
  
  ImageView toggle;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_internet_speedup);
      toggle = (ImageView) findViewById(R.id.imageView1);
  
      new CountDownTimer(31000, 1000) {
          public void onTick(long millisUntilFinished) {
              //toggle.setText("You have "+ millisUntilFinished / 1000 + " seconds left");
          }
          public void onFinish() {
              // read the airplane mode setting
              boolean isEnabled = Settings.System.getInt(
                    getContentResolver(), 
                    Settings.System.AIRPLANE_MODE_ON, 0) == 1;
  
              // toggle airplane mode
              Settings.System.putInt(
                    getContentResolver(),
                    Settings.System.AIRPLANE_MODE_ON, isEnabled ? 0 : 1);
  
              // Post an intent to reload
              Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
              intent.putExtra("state", !isEnabled);
              sendBroadcast(intent);
          }
      };
    }    
   }
  </code></pre>