增加result返回列表，联系人接口增加推送

src/main/java/com/onekeycall/videotablet/controller/sn/DeviceApkInfoController.java

@@ -30,7 +30,7 @@ public class DeviceApkInfoController {
     public Result uploadInstallApks(@RequestBody ApkUploadRequest request) {
         String sn = request.getSn();
         List<ApkInfo> apkList = request.getApk_list();
-        if (apkList == null || apkList.size() == 0) {
+        if (apkList == null || apkList.isEmpty()) {
             return Result.error().message("应用列表为空");
         }
         deviceApkInfoService.saveOrUpdateDeviceApkInfo(sn, apkList);