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.