假设我有以下片段:
Fragment1 Fragment2 DialogFragment Fragment3 Fragment4
假设我进入以下片段,每个片段都被添加到后退栈中:
Fragment1 -> Fragment2 -> DialogFragment -> Fragment3 -> Fragment4
如果我点击返回按钮,通常会回到Fragment3,但实际上会显示DialogFragment。以下是我使用的Fragment事务:Fragment1 -> Fragment2。请帮我检查一下。
FragmentTransaction ft = mActivity.getSupportFragmentManager().beginTransaction();
ft.replace(R.id.mainContentHolder, new Fragment2(), "Fragment2");
ft.addToBackStack(null);
ft.commit();
片段2 -> 对话框片段
FragmentTransaction ft2 = getFragmentManager().beginTransaction();
ft2.setCustomAnimations(R.anim.flipp_in,R.anim.flipp_static);
ft2.add(R.id.mainContentHolder, new DialogFragment(), "DialogFragment");
ft2.addToBackStack(null);
ft2.commit();
ft2.hide(Fragment1.this);
DialogFragment -> Fragment3
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.mainContentHolder, new Fragment3(), "Fragment3");
ft.addToBackStack(null);
ft.commit();
Fragment3 -> Fragment4
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.mainContentHolder, new Fragment4(), "Fragment4");
ft.addToBackStack(null);
ft.commit();
问题再次出现在当我在Fragment4中点击BACK按钮时,DialogFragment被显示出来,而不是Fragment3。