在Fragment中使用getActivity().runOnUiThread()更新Ui可能会遇到报错:
java.lang.NullPointerException: Attempt to invoke virtual method ‘void android.support.v4.app.FragmentActivity.runOnUiThread(java.lang.Runnable)’ on a null object reference
at com.rehtt.app.Fragment.MainFragment$3.onFailure(MainFragment.java:103)
这是因为getActivity()为null所致。
解决方法:
if (getActivity() !=null ){
getActivity().runOnUiThread(......);
}