从DialogFragment打开片段（替换对话框父）

问题描述

让我们说我有一个片段，从中我打开 DialogFragment 是这样的：

Let's say I have Fragment A, from which I open a DialogFragment like this:

FragmentActivity fragmentActivity = (FragmentActivity) view.getContext();
FragmentTransaction ft = fragmentActivity.getSupportFragmentManager().beginTransaction();
Fragment prev = fragmentActivity.getSupportFragmentManager().findFragmentByTag("dialog");
if (prev != null) {
  ft.remove(prev);
}
ft.addToBackStack(null);
DialogFragment fragmentDialog = MyDialogFragment.newInstance();
fragmentDialog.show(ft, "dialog");

在该对话框中，单击（正面/中性/负）按钮后，我想开片段B，应更换片段A。

From this Dialog, after clicking (positive / neutral / negative) button, I want to open Fragment B, which should replace Fragment A.

在对话框的onClick方法我运行父活动的回调方法：

In the Dialog's onClick method I run a callback method of parent Activity:

@Override
public void onClick(DialogInterface dialog, int which) {
  switch(which) {
    case DialogInterface.BUTTON_NEUTRAL:
      detailsCallbacks.openMoreDetails();
      break;
  }
}

最后我活动的 openMoreDetails（）方法是这样的：

@Override
public void openMoreDetails() {
  Fragment fragmentB = Fragment.newInstance();
  FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
  ft.replace(R.id.fragment_container, fragmentB);
  ft.addToBackStack(null);
  ft.commit();
}

我得到的是什么奇怪的。片段B闪烁屏幕只为第二分数，然后是（覆盖？）由片段A更换一次。

What I get is strange. Fragment B blinks on the screen just for the fraction of second and then is replaced (covered?) by Fragment A again.

当我点击了按钮，我得到甚至从片段A回来，这些非交易加入到背堆栈。我想显示片段B，然后当pressing向上按钮返回到片段A

When I click up button I get even back from Fragment A so non of these transaction were added to the back stack. I would like to show Fragment B and then when pressing up button go back to Fragment A.

时它以某种方式可能吗？什么是错上我的方法？

Is it somehow possible? And what's wrong on my approach?

推荐答案

刚刚有同样的问题：

片段A显示自定义对话框片段。

Fragment A display a custom dialog fragment.

在单击对话框片段的按钮中的一个，我想删除对话框并显示片段B

At click on one of the buttons of the dialog fragment, I wanted to remove the dialog and show Fragment B.

片段B被显示，并瞬间消失。我的屏幕再次显示片段A。

Fragment B was displayed and instantly disappear. My screen was displaying Fragment A again.

什么的错误在我最初的实现：

What was wrong on my initial implementation:

private void onClickInscription() {
    FragmentInscription frag = FragmentInscription.newInstance();
    FragmentTransaction ft = getFragmentManager().beginTransaction();
    ft.replace(R.id.main, frag);
    ft.addToBackStack(null);
    ft.commit();
    dismiss();
}

以及正确之一：

private void onClickInscription() {
    dismiss();
    FragmentInscription frag = FragmentInscription.newInstance();
    FragmentTransaction ft = getFragmentManager().beginTransaction();
    ft.replace(R.id.main, frag);
    ft.addToBackStack(null);
    ft.commit();
}

所以要尽量先打电话解雇你的对话框然后应用 FragmentTransction

这篇关于从DialogFragment打开片段（替换对话框父）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！