如何访问preferenceFragment通过ID？ [英] How do I access PreferenceFragment by id?

问题描述

我有一个蜂窝式的preferences。我定义了头：

I have a Honeycomb style preferences. I define the headers:

<preference-headers xmlns:android="http://schemas.android.com/apk/res/android">
  <header android:id="@+id/pref_general" android:fragment="MyPreferencesFragment" android:title="@string/pref_general_title">
    <extra android:name="resource" android:value="pref_general" />
  </header>
  <header android:id="@+id/pref_sharing" android:fragment="MyPreferencesFragment" android:title="@string/pref_sharing_title">
    <extra android:name="resource" android:value="pref_sharing" />
  </header>
</preference-headers>

然后，我加载它们在preferenceActivity：

Then I load them in PreferenceActivity:

public void onBuildHeaders(List<Header> target)
{
  loadHeadersFromResource(R.xml.preference_headers, target);
}

如何通过它在开始preferenceFragment ID，然后在地址确切的片段？我怎样才能获得相应的片段，所以我可以使一个列表项/禁用呢？

How can I then address exact Fragment by its ID in startPreferenceFragment? How can I access a list item corresponding to that Fragment so I can enable/disable it?

推荐答案

我已经找到了解决方案。有没有办法直接访问的片段，但可以通过 ListAdapter 中找到。在您的 preferenceActivity 你可以写

I have found the solution. There is no way to access fragment directly, but it can be found via ListAdapter. In your PreferenceActivity you can write:

int fragmentId = R.id.pref_sharing;
for (int i = 0; i < getListAdapter().getCount(); i++)
{
    Header header = (Header) getListAdapter().getItem(i);
    if (fragmentId == header.id)
    {
        // You can access a fragment name (class)
        String fragment = header.fragment;
        // You can access fragment arguments
        Bundle args = header.fragmentArguments;
    }
}

我没有找到一个方法来禁用一个标题列表项，但我创建了一个解决办法在此基础上code。

I didn't find a way to disable a header list item but I created a workaround based on this code.

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