PreferenceFragment replace后造成视图重叠

SettingFragment.java

public class SettingsFragment extends PreferenceFragment {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.preferences);

    }
}

preferences.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
    android:layout="@layout/preference_item"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:title="@string/title_activity_setting">
    <PreferenceCategory
        android:layout="@layout/preference_category_widget"
        android:title="人性化自由选择">

        <CheckBoxPreference
            android:layout="@layout/preference_item"
            android:title="贝壳通知栏单词处于最高位置"
            android:key="@string/notify_priority"
            android:summaryOn="当前为最高位置"
            android:summaryOff="当前为最低位置(默认)"
            android:defaultValue="false"/>
        <Preference
            android:layout="@layout/preference_item"
            android:title="在通知栏显示音标"
            android:summary="当前为不显示"
            android:defaultValue="false"/>
    </PreferenceCategory>
</PreferenceScreen>

上面的代码是参考https://drakeet.me/material-design-settings-activity ，想要做一个Material Design形式的设置页面。

通过添加设置xml的形式所形成的SettingsFragment背景是透明的，replace后会与其他fragment造成视图重叠，如何解决？或者有更好的设置页面解决方法吗？

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SettingFragment.java下直接给view加上背景色解决..我还是太年轻..

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle
            savedInstanceState) {
        View v = super.onCreateView(inflater, container, savedInstanceState);
        v.setBackgroundColor(getResources().getColor(R.color.white));
        return v;
    }

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replace:

getFragmentManager().beginTransaction().replace(android.R.id.content, new SettingsFragment()).commit();