移动推送Android SDK:在Activity中初始化推送SDK，无法接收到推送通知为什么？

1.问题


在Activity中执行了推送的初始化逻辑，SDK的接入按照集成文档操作确认无误，为什么推送消息接收不到，或者有时能接收到有时接收不到？相关初始化代码如下：

1. [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]class[backcolor=transparent] [backcolor=transparent]MyActivity[backcolor=transparent] [backcolor=transparent]extends[backcolor=transparent] [backcolor=transparent]Activity[backcolor=transparent] [backcolor=transparent]{
2. [backcolor=transparent]   [backcolor=transparent]@override
3. [backcolor=transparent]   [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]void[backcolor=transparent] onCreate[backcolor=transparent]([backcolor=transparent]Bundle[backcolor=transparent] savedInstanceState[backcolor=transparent])[backcolor=transparent] [backcolor=transparent]{
4. [backcolor=transparent]       [backcolor=transparent]super[backcolor=transparent].[backcolor=transparent]onCreate[backcolor=transparent]([backcolor=transparent]savedInstanceState[backcolor=transparent]);
5. [backcolor=transparent]       initCloudChannel[backcolor=transparent]([backcolor=transparent]getApplicationContext[backcolor=transparent]());
6. [backcolor=transparent]       [backcolor=transparent]......
7. [backcolor=transparent]   [backcolor=transparent]}
8. [backcolor=transparent]   [backcolor=transparent]......
9. [backcolor=transparent]}

1. [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]class[backcolor=transparent] [backcolor=transparent]MyApplication[backcolor=transparent] [backcolor=transparent]extends[backcolor=transparent] [backcolor=transparent]Application[backcolor=transparent] [backcolor=transparent]{
2. [backcolor=transparent]   [backcolor=transparent]@override
3. [backcolor=transparent]   [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]void[backcolor=transparent] onCreate[backcolor=transparent]()[backcolor=transparent] [backcolor=transparent]{
4. [backcolor=transparent]       [backcolor=transparent]super[backcolor=transparent].[backcolor=transparent]onCreate[backcolor=transparent]();
5. [backcolor=transparent]       [backcolor=transparent]if[backcolor=transparent](如果是主进程或[backcolor=transparent]channel[backcolor=transparent]进程)[backcolor=transparent] [backcolor=transparent]{
6. [backcolor=transparent]           initCloudChannel[backcolor=transparent]([backcolor=transparent]this[backcolor=transparent]);
7. [backcolor=transparent]       [backcolor=transparent]}
8. [backcolor=transparent]   [backcolor=transparent]}
9. [backcolor=transparent]   [backcolor=transparent]......
10. [backcolor=transparent]}