Detailed explanation of the Android application layer production LED indicator light

public class LEDActivity extends Activity implements  {
private static final String TAG = "LED";
Button mLedTest;
int mLedStatus = 0;
private final int mLedColorRed = 0xFFFF0000;

final byte[] LIGHT_ON = { '2', '5', '5' };
final byte[] LIGHT_OFF = { '0' };
private final int RED = 0;
private int color = RED;
String RED_LED_DEV = " /sys/class/leds/torch/brightness";

public void onCreate(Bundle paramBundle) {
  (paramBundle);
  setContentView(.led_test);

  mLedTest = ((Button)findViewById());
  (this);

 //  setledlightcolor(color);
 //  (mLedColorRed);
 //  ("RED"); 
 //  mLedStatus = 1;
 }

 public void onClick(View v) {
 ("LEDActivity", "---onClick---mLedStatus=" + mLedStatus);
 switch (()) {
 case :
 if(mLedStatus == 0) {
 ("open");
 mLedStatus = 1
 }else if(mLedStatus == 1) {
   ("close");
   mLedStatus = 0;
 }
 break;
 }
 }

 @Override
public void finish() {
  setledlightcolor(-1);
  ();
}
private void setledlightcolor(int color) {
  logd("set:" + color);
  boolean red = false;
  switch (color) {
  case RED:
    red = true;
    break;
  default:
    break;
  }
  try {
    FileOutputStream foRed = new FileOutputStream(RED_LED_DEV);
    (TAG, "foRed" + foRed);
    (red ? LIGHT_ON : LIGHT_OFF);
    ();
  } catch (Exception e) {
    loge(e);
  }
}
void logd(Object d) {
  (TAG, "" + d);
}
void loge(Object e) {
  (TAG, "" + e);
}
}