Android:Fragment返回栈的监听和弹栈 随记

添加返回栈的监听
OnBackStackChangedListener方法onBackStackChanged
fragmentManager.addOnBackStackChangedListener(onBackStackChangedListener);
Log.i(Tag, "当前回退栈的大小：" + fragmentManager.getBackStackEntryCount());

fragmentManager.popBackStack(); // 取出栈中实体

官方：

/*** Interface to watch for changes to the back stack.*/public interface OnBackStackChangedListener {/*** Called whenever the contents of the back stack change.*/public void onBackStackChanged();}