1.增加获取的重量的判断，空返回-1，非法返回-100

app/src/main/java/com/phlx/anchorcollect/bt/BtService.java

@@ -23,6 +23,7 @@ import cn.wandersnail.bluetooth.Connection;
 import cn.wandersnail.bluetooth.EventObserver;
 import cn.wandersnail.commons.util.ToastUtils;
 import me.goldze.mvvmhabit.bus.RxBus;
+import me.goldze.mvvmhabit.utils.StringUtils;
 
 public class BtService extends Service implements EventObserver {
 
@@ -72,7 +73,16 @@ public class BtService extends Service implements EventObserver {
         Log.e(TAG, "onRead: " + data);
 //        ToastUtils.showShort("onRead: " + data);
 
-        String weightData = data.substring(data.indexOf("wn") + 3, data.indexOf("kg"));
+        String weightData = data.substring(data.indexOf("wn") + 3, data.indexOf("kg")).trim();
+        if (StringUtils.isEmpty(weightData)) {//如果是空数据，返回-1
+            weightData = "-1";
+//            return;
+        }
+        try {//判断数据是否合法，不合法返回-100
+            Double.parseDouble(weightData);
+        } catch (Exception e) {
+            weightData = "-100";
+        }
         EventMsg eventMsg = new EventMsg();
         eventMsg.setAction(Configs.currentEvent);
         eventMsg.setObj(weightData);