java.lang.IllegalStateException: Fragment already active

1. 问题描述：

在使用Fragment的setArguments(Bundle args)来传递参数到Fragment时，如果该Fragment是之前已经new出来的Fragment，

不是本次重新new出来的Fragment，这是再次调用setArguments(Bundle args) 则会发生该Exception。

2.解决方案：

Reading the setArguments(Bundle args) source will help you understand:

/*** Supply the construction arguments for this fragment.  This can only* be called before the fragment has been attached to its activity; that* is, you should call it immediately after constructing the fragment.  The* arguments supplied here will be retained across fragment destroy and* creation.*/public void setArguments(Bundle args) {    if (mIndex >= 0) {        throw new IllegalStateException("Fragment already active");    }    mArguments = args;}

You cannot use setArguments(Bundle args) again in your code on the same Fragment. What you want to do I guess is either create a new Fragment of and set the arguments again. Or you can usegetArguments() and then use the put methods of bundle to change it's values.