android - 如何从backstack中删除碎片

有一个包含5个片段的活动（向导）。

StartFrag  -(start)-> Frag1 -(next)-> Frag2 -(next)-> SubmitFrag
-(submit)-> SuccessFrag.

在成功片段上点击submitmore按钮后，我想从后台删除frag1、frag2和submitfrag并返回startfrag。怎么做？

最佳答案

你可以试试这个

 FragmentManager fm = getFragmentManager();
 FragmentTransaction ft=fm.beginTransaction();
 ft.add(R.id.group,startFrag,"");
 ft.addtoBackStack("startFrag");
 ft.commit();

    enter code here

 // add other 4 fragments here


 when you want to go startFrag on click of some button you can try below code.
 fm.popBackStack("startFrag",0);
 //where startFrag is the tag which you specify when you called
 //addtoBackStack("startFrag")