Weex Page display become slow when Native Activiti run finish() back to Weex page after several times

[黄炳金]

Hi Weex team,

We found that weex page jump to a Native APK Activity, then back to Weex page, 
several times, back to weex page become slow.
But the Native APK Activity has been finished.

This is the case often happened in weex page complex, like SPA.

  Do you have any suggestion?

Best Regards!
HuangBJ