我调用了cloudpushservice.register后获取deviceId发现deviceId是空的是什么原因？

1.问题


为什么调用cloudpushservice.register之后获取deviceId，却发现deviceId为空，这是什么原因曹成的？

2.问题原因


推送SDK在注册的过程中需要将设备相关信息（appKey，appSecret，包名，设备号等）上报服务端，只有上报成功后服务端才会下发deviceId。如果发现deviceId为空，可能有两个原因：

• 推送初始化失败，此时可通过onFailed回调查看相关错误信息
• 
  初始化未完成，推送初始化存在异步操作，在初始化未完成时是无法获取到deviceId的
  
  3.解决方案
  
  
  在CloudPushService.register的成功回调中获取deviceId，请参考下述代码：
  1. [backcolor=transparent] pushService[backcolor=transparent] .[backcolor=transparent] register[backcolor=transparent] ([backcolor=transparent] applicationContext[backcolor=transparent] ,[backcolor=transparent] [backcolor=transparent] new[backcolor=transparent] [backcolor=transparent] CommonCallback[backcolor=transparent] ()[backcolor=transparent] [backcolor=transparent] {
  2. [backcolor=transparent]    [backcolor=transparent]@Override
  3. [backcolor=transparent]    [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]void[backcolor=transparent] onSuccess[backcolor=transparent]([backcolor=transparent]String[backcolor=transparent] response[backcolor=transparent])[backcolor=transparent] [backcolor=transparent]{
  4. [backcolor=transparent]        [backcolor=transparent]Log[backcolor=transparent].[backcolor=transparent]i[backcolor=transparent]([backcolor=transparent]TAG[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]"init CloudPushService success, device id: "[backcolor=transparent] [backcolor=transparent]+[backcolor=transparent] pushService[backcolor=transparent].[backcolor=transparent]getDeviceId[backcolor=transparent]()[backcolor=transparent] [backcolor=transparent]+[backcolor=transparent]", Appkey: "[backcolor=transparent] [backcolor=transparent]+[backcolor=transparent] [backcolor=transparent]AmsGlobalHolder[backcolor=transparent].[backcolor=transparent]getAppMetaData[backcolor=transparent]([backcolor=transparent]"com.alibaba.app.appkey"[backcolor=transparent]));
  5. [backcolor=transparent]  [backcolor=transparent]}
  7. [backcolor=transparent]    [backcolor=transparent]@Override
  8. [backcolor=transparent]    [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]void[backcolor=transparent] onFailed[backcolor=transparent]([backcolor=transparent]String[backcolor=transparent] errorCode[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]String[backcolor=transparent] errorMessage[backcolor=transparent])[backcolor=transparent] [backcolor=transparent]{
  9. [backcolor=transparent]        [backcolor=transparent]Log[backcolor=transparent].[backcolor=transparent]d[backcolor=transparent]([backcolor=transparent]TAG[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]"init CloudPushService failed. errorcode: "[backcolor=transparent] [backcolor=transparent]+[backcolor=transparent] errorCode [backcolor=transparent]+[backcolor=transparent] [backcolor=transparent]", errorMessage: "[backcolor=transparent] [backcolor=transparent]+[backcolor=transparent] errorMessage [backcolor=transparent]+[backcolor=transparent] [backcolor=transparent]", deviceId:"[backcolor=transparent] [backcolor=transparent]+[backcolor=transparent] pushService[backcolor=transparent].[backcolor=transparent]getDeviceId[backcolor=transparent]());
  10. [backcolor=transparent]    [backcolor=transparent]}
  11. [backcolor=transparent]});