1、增加离线订单分批上传机制(避免一次性上传大量订单被服务拒绝)

2、增加数据库版本从1升级到2的迁移机制

app/src/main/java/com/bgycc/smartcanteen/data/_1To_2Migration.java

+package com.bgycc.smartcanteen.data;
+
+import androidx.annotation.NonNull;
+import androidx.room.migration.Migration;
+import androidx.sqlite.db.SupportSQLiteDatabase;
+
+import com.bgycc.smartcanteen.entity.PayData;
+
+public class _1To_2Migration extends Migration {
+    public _1To_2Migration() {
+        super(1, 2);
+    }
+
+    @Override
+    public void migrate(@NonNull SupportSQLiteDatabase database) {
+        database.execSQL("ALTER TABLE " + PayData.TABLE_NAME +
+                " ADD COLUMN uploadTime INTEGER NOT NULL DEFAULT 0");
+    }
+}

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

@@ -143,9 +143,11 @@ public class PayOfflineViewModel extends ViewModel {
     }
     }
 
 
     private class RequestRunnable implements Runnable {
     private class RequestRunnable implements Runnable {
+        private static final int PAY_OFFLINE_PER_LIMIT = 10;
         @Override
         @Override
         public void run() {
         public void run() {
-            List<PayData> payData = payDataRepository.queryPayOfflineData();
+            long currentTime = System.currentTimeMillis();
+            List<PayData> payData = payDataRepository.queryPayOfflineData(currentTime, PAY_OFFLINE_PER_LIMIT);
             if (payData == null || payData.isEmpty()) {
             if (payData == null || payData.isEmpty()) {
                 cancelTimeout();
                 cancelTimeout();
                 payRequest = null;
                 payRequest = null;