无意义的优化~

app/src/main/java/com/bgycc/smartcanteen/activity/MainActivity.java

@@ -58,7 +58,6 @@ import com.google.gson.Gson;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.text.SimpleDateFormat;
-import java.util.Date;
 import java.util.Locale;
 
 import static android.os.Process.myPid;
@@ -148,7 +147,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
                 case PayOnlineState.SEND:
                     message.setTextColor(getResources().getColor(R.color.pay_idle));
                     message.setText(R.string.pay_wait);
-                    String time = payDateFormat.format(new Date());
+                    String time = payDateFormat.format(System.currentTimeMillis());
                     String log = "支付进度: " + time + " - " + event.getMessage();
                     LogUtils.file(TAG, log);
 
@@ -381,7 +380,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         TTSHelper.speak(successMessage);
         qrCodeViewModel.scan();
 
-        String successTime = payDateFormat.format(new Date());
+        String successTime = payDateFormat.format(System.currentTimeMillis());
         String successLog = "支付成功: " + successTime + " - " + successMessage;
         LogUtils.file(TAG, successLog);
 
@@ -399,7 +398,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         TTSHelper.speak(failedMessage);
         qrCodeViewModel.scan();
 
-        String failedTime = payDateFormat.format(new Date());
+        String failedTime = payDateFormat.format(System.currentTimeMillis());
         String failedLog = "支付失败: " + failedTime + " - " + failedMessage;
         LogUtils.file(TAG, failedLog);