update code

app/build.gradle

         applicationId "aicare.net.cn.sdk.iweightdemo"
         minSdkVersion 18
         targetSdkVersion 29
-        versionCode 17
-        versionName "1.3.7"
+        versionCode 18
+        versionName "1.3.8"
     }
     buildTypes {
         debug {

app/src/main/java/aicare/net/cn/iweightdemo/MyActivity.java

 
 import static aicare.net.cn.iweightdemo.R.string.weight;
 
+/**
+ *
+ * @author xing
+ * @date 2022/11/11
+ */
 public class MyActivity extends BleProfileServiceReadyActivity implements DeviceDialog.OnDeviceScanListener, View.OnClickListener {
 
     private final static String TAG = "MyActivity";
 
     private void initData() {
         user = new User(1, 2, 28, 170, 768, 551);
+        User user2 = new User(2, 1, 25, 165, 650, 500);
+        User user3 = new User(3, 1, 15, 150, 450, 600);
         userList.add(user);
+        // Add multiple users for generating offline history
+        userList.add(user2);
+        userList.add(user3);
     }
 
     private void initViews() {
                         case R.id.rb_jin:
                             unit = AicareBleConfig.UNIT_JIN;
                             binder.syncUnit(AicareBleConfig.UNIT_JIN);
+                            break;
+                        default:
+
                             break;
                     }
                 }
                     case R.id.rb_female:
                         user.setSex(2);
                         break;
+
+                    default:
+                        break;
                 }
             }
         });
         if (isDeviceConnected()) {
             switch (v.getId()) {
                 case R.id.btn_sync_history:
+                    //Get weighing data in disconnected state
                     binder.syncHistory();
                     break;
                 case R.id.btn_sync_list:
                     binder.syncDate();
                     break;
 
-
                 case R.id.btn_query_did:
                     binder.queryDID();
                     break;
                     binder.queryBleVersion();
                     break;
 
+                default:
+                    break;
+
             }
         } else if (v.getId() == R.id.btn_version) {
             mGetVersion = true;
                     }
                 }
                 break;
+
+            default:
+
+                break;
         }
 
         return true;
                                 rg_change_unit.check(R.id.rb_st);
                                 weightData.setDecimalInfo(new DecimalInfo(1, 1, 1, 1, 1, 1));
                                 break;
+
+                            default:
+
+                                break;
                         }
                         weightData.setWeight(data.getWeight());
                         weightData.setTemp(data.getTemp());
             case BleProfileService.STATE_CONNECTING:
                 showInfo(getString(R.string.state_connecting), true);
                 break;
+
+            default:
+
+                break;
         }
     }
 
     private void showInfo(String str, boolean showSnackBar) {
-        if (showSnackBar)
+        if (showSnackBar) {
             showSnackBar(str);
+        }
         String time = ParseData.getCurrentTime() + "\n----" + str;
         dataList.add(time);
         listAdapter.notifyDataSetChanged();
                 toolbar.setSubtitle(deviceAddress);
                 menu.getItem(0).setTitle(R.string.unbound);
                 break;
+
+            default:
+                break;
         }
     }
 
 
     @Override
     public void onGetWeightData(final WeightData weightData) {
-        if (weightData == null)
+        if (weightData == null) {
             return;
+        }
         L.i(TAG,"WeightData:"+weightData.toString());
         setWeighDataText(AicareBleConfig.getWeight(weightData.getWeight(), unit, weightData.getDecimalInfo()));
         if (weightData.getTemp() != Double.MAX_VALUE) {
             case AicareBleConfig.SettingStatus.DATA_SEND_END:
                 showInfo(getString(R.string.settings_status, getString(R.string.data_send_end)), true);
                 break;
+
+            default:
+                break;
         }
     }
 
             case WBYService.ADC:
                 showInfo(getString(R.string.adc, result), true);
                 break;
+
+            default:
+                break;
         }
     }
 
 
     @Override
     protected void onGetDecimalInfo(DecimalInfo decimalInfo) {
-        if (decimalInfo == null)
+        if (decimalInfo == null) {
             return;
+        }
         L.e(TAG, decimalInfo.toString());
         String decimalStr = (getString(R.string.source_decimal, decimalInfo.getSourceDecimal())) + (getString(R.string.kg_decimal, decimalInfo
                 .getKgDecimal())) + (getString(R.string.lb_decimal, decimalInfo.getLbDecimal())) + (getString(R.string.st_decimal, decimalInfo
 
     @Override
     protected void onGetAlgorithmInfo(AlgorithmInfo algorithmInfo) {
-        if (algorithmInfo == null)
+        if (algorithmInfo == null) {
             return;
+        }
         String algorithmStr = (getString(R.string.adc, String.valueOf(algorithmInfo.getAdc())) + (getString(R.string.algorithm_id, algorithmInfo.getAlgorithmId())));
         showInfo(algorithmStr, true);
         if (user != null) {