java - PreferenceFragment 在 Fragment 布局上重叠

Question

我已经能够使用 PreferenceFragment 实现设置页面。在我导航到另一个页面之前，它显示得很好。设置页面仍然显示在其他页面的顶部，我不知道如何完全替换它。

这张图片是我的意思的一个例子。我已通过抽屉导航从设置页面导航到主页。我认为我在 replace() 方法中遗漏了一些东西，但我不知道是什么。

AccountSettings.java

public class AccountSettings extends PreferenceFragment {

Activity mActivity;

private static final String ARG_SECTION_NUMBER = "section_number";

public static AccountSettings newInstance(int sectionNumber) {
    AccountSettings fragment = new AccountSettings();
    Bundle args = new Bundle();
    args.putInt(ARG_SECTION_NUMBER, sectionNumber);
    fragment.setArguments(args);
    return fragment;
}

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.settings);

}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    getView().setBackgroundColor(Color.WHITE);
    getView().setClickable(true);
}


@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);
    mActivity = activity;

}


@Override
public void onDestroy() {
    super.onDestroy();
}


@Override
public void onDetach() {
    super.onDetach();
}


public void restoreActionBar() {
    ActionBar actionBar = ((AppCompatActivity)getActivity()).getSupportActionBar();
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
    actionBar.setDisplayShowTitleEnabled(true);
    actionBar.setTitle("Account Settings");
}

public AccountSettings() {

}

}

MainPage.java(抽屉导航)

public void onNavigationDrawerItemSelected(int position) {
    // update the main content by replacing fragments
    FragmentManager fragmentManager = getSupportFragmentManager();
    if (position == 0) {
        fragmentManager.beginTransaction()
                .replace(R.id.container, PlaceholderFragment.newInstance(1))
                .commit();

    } else if (position == 1) {
        fragmentManager.beginTransaction()
                .replace(R.id.container, Search.newInstance(2))
                .commit();

    }

    else if (position == 2) {
        fragmentManager.beginTransaction()
                .replace(R.id.container, Favourites.newInstance(3))
                .commit();
    }

    else if (position == 3) {
        fragmentManager.beginTransaction()
                .replace(R.id.container, History.newInstance(4))
                .commit();

    }

    else if (position == 4) {
        getFragmentManager().beginTransaction()
                .replace(R.id.container, AccountSettings.newInstance(5))
                .commit();

    }

}

settings.xml

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:key="prefs">

<PreferenceCategory android:title="@string/pref_search_category" >
<CheckBoxPreference
    android:defaultValue="false"
    android:key="prefDateTime"
    android:summary="@string/pref_night_day_description"
    android:title="@string/pref_night_day" >
</CheckBoxPreference>
</PreferenceCategory>

</PreferenceScreen>

activity_main_page.xml

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainPage">

<FrameLayout android:id="@+id/container" android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".AccountSettings"
    />

<fragment android:id="@+id/navigation_drawer"
    android:layout_width="@dimen/navigation_drawer_width" android:layout_height="match_parent"
    android:layout_gravity="start"
    android:name="com.example.laptop.whatsfordinner.NavigationDrawerFragment"
    tools:layout="@layout/fragment_navigation_drawer"
    />

请帮忙!

Answer 1

在 fragment 的 oncreateView 方法中添加此行

container.removeAllViews()

在扩展 fragment 的 View 之前。这对我有帮助this problem