使用支持 (v21) 工具栏创建首选项屏幕 [英] Creating a Preference Screen with support (v21) Toolbar

问题描述

我在首选项屏幕上使用支持库中新的 Material Design 工具栏时遇到问题.

I was having trouble using the new Material Design toolbar in the support library on a Preference screen.

我有一个 settings.xml 文件如下:

I have a settings.xml file as below:

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
    <PreferenceCategory
        android:title="@string/AddingItems"
        android:key="pref_key_storage_settings">

        <ListPreference
            android:key="pref_key_new_items"
            android:title="@string/LocationOfNewItems"
            android:summary="@string/LocationOfNewItemsSummary"
            android:entries="@array/new_items_entry"
            android:entryValues="@array/new_item_entry_value"
            android:defaultValue="1"/>

    </PreferenceCategory>
</PreferenceScreen>

字符串在别处定义.

推荐答案

您可以使用 PreferenceFragment 作为 PreferenceActivity 的替代方案.所以，这里是包装 Activity 的例子:

You can use a PreferenceFragment, as an alternative to PreferenceActivity. So, here is the wrapping Activity example:

public class MyPreferenceActivity extends ActionBarActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pref_with_actionbar);

        android.support.v7.widget.Toolbar toolbar = (android.support.v7.widget.Toolbar) findViewById(uk.japplications.jcommon.R.id.toolbar);
        setSupportActionBar(toolbar);

        getFragmentManager().beginTransaction().replace(R.id.content_frame, new MyPreferenceFragment()).commit();
    }
}

这是布局文件(pref_with_actionbar):

And here is the layout file (pref_with_actionbar):

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_height="@dimen/action_bar_height"
        android:layout_width="match_parent"
        android:minHeight="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:theme="@style/ToolbarTheme.Base"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_below="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>

最后是PreferenceFragment:

public static class MyPreferenceFragment extends PreferenceFragment{
    @Override
    public void onCreate(final Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.settings);
    }
}

我希望这对某人有所帮助.

I hope this helps someone.

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