修复部分细节问题

1、离线支付增加延时(留出播报beep的声音)
2、现在同一订单号不允许重复生成了

app/src/main/java/com/bgycc/smartcanteen/viewModel/PayOfflineViewModel.java

@@ -37,7 +37,9 @@ import static com.bgycc.smartcanteen.utils.SmartCanteenUtils.TAG;
  * "标记成功"状态: 在WebSocket未链接时，"在线支付"订单直接标记为"离线支付"，并更新到数据库成功的状态
  */
 public class PayOfflineViewModel extends ViewModel {
-    private static final long TIMEOUT = 5;
+    private static final long TIMEOUT = 5 * 1000;
+    // 在线支付延迟150ms执行，留出时间给扫码反馈
+    private static final long REQUEST_DELAY = 150;
     private static final long DEFAULT_DELAY = 3 * 1000;
     private Gson gson;
     private String deviceSN;
@@ -69,7 +71,7 @@ public class PayOfflineViewModel extends ViewModel {
 
     public void exec(PayData payData) {
         MarkRunnable runnable = new MarkRunnable(payData);
-        SCTaskExecutor.getInstance().executeOnDiskIO(runnable);
+        SCTaskExecutor.getInstance().schedule(runnable, REQUEST_DELAY, TimeUnit.MILLISECONDS);
     }
 
     private void cancelTimeout() {
@@ -87,7 +89,7 @@ public class PayOfflineViewModel extends ViewModel {
             // 只要Socket链接成功，则搜索数据库需要离线支付的订单，并发送给后台
             cancelTimeout();
             TimeoutRunnable timeoutRunnable = new TimeoutRunnable();
-            timeoutFuture = SCTaskExecutor.getInstance().schedule(timeoutRunnable, TIMEOUT, TimeUnit.SECONDS);
+            timeoutFuture = SCTaskExecutor.getInstance().schedule(timeoutRunnable, TIMEOUT, TimeUnit.MILLISECONDS);
             RequestRunnable runnable = new RequestRunnable();
             SCTaskExecutor.getInstance().executeOnDiskIO(runnable);
         }

app/src/main/java/com/bgycc/smartcanteen/viewModel/PayOnlineViewModel.java

@@ -38,8 +38,8 @@ import static com.bgycc.smartcanteen.utils.SmartCanteenUtils.TAG;
  */
 public class PayOnlineViewModel extends ViewModel {
     private static final long TIMEOUT = 5 * 1000;
-    // 在线支付延迟100ms执行，留出时间给扫码反馈
-    private static final long REQUEST_DELAY = 100;
+    // 在线支付延迟150ms执行，留出时间给扫码反馈
+    private static final long REQUEST_DELAY = 150;
     private static final long DEFAULT_DELAY = 3 * 1000;
     private Gson gson;
     private String deviceSN;

app/src/main/java/com/bgycc/smartcanteen/viewModel/QRCodeViewModel.java

@@ -119,10 +119,9 @@ public class QRCodeViewModel extends ViewModel {
         }
 
         PayData newPay = new PayData(deviceSN, scanData, terminalType);
-        // 扫描到的二维码，先检查是否已存在该订单(若标记“支付失败”，则认为该订单不存在)
+        // 扫描到的二维码，先检查该订单是否已存在
         PayData existsPay = payDataRepository.queryPayDataByPayCode(scanData);
-        if (existsPay != null && !existsPay.failed()) {
-            // 存在相同订单时不作处理
+        if (existsPay != null) {
             qrCodeState.postValue(new QRCodeState(QRCodeState.FAILED, "请不要重复扫码"));
             return;
         }