我有一个preferenceFragment子类。我想其项目（preferences和开关preferences）中的每一个以具有120dp的高度。那怎么办？

I have a PreferenceFragment subclass. I want each one of its items (Preferences and SwitchPreferences) to have a height of 120dp. How to do that?

下面是相关的code：

Here is the related code:

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

和

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
    <SwitchPreference android:key="app_main_switch"
                      android:title="@string/app_name"
                      android:defaultValue="true"/>
    <Preference android:title="@string/events_lowercase"
                android:dependency="app_main_switch">
        <intent android:targetPackage="hu.ppke.itk.marma.android.bead" 
                android:targetClass="hu.ppke.itk.marma.android.bead.EventList"/>
    </Preference>
    <Preference android:title="@string/filters_lowercase"
                android:dependency="app_main_switch">
        <intent android:targetPackage="hu.ppke.itk.marma.android.bead" 
                android:targetClass="hu.ppke.itk.marma.android.bead.FilterList"/>
    </Preference>
    <SwitchPreference android:dependency="app_main_switch"
                      android:key="learn_switch"
                      android:defaultValue="false"
                      android:title="@string/learning"/>
</PreferenceScreen>

下面是如何看起来像现在：

Here is how it looks like now:

所以，我希望所有四个项目名单有120dp的高度。正如你所看到的，我不是一个创造的ListView，它的内部创建的。我试图用

So I want all four items of the list to have a height of 120dp. As you can see I'm not the one creating the ListView, it's created internally. I tried to retrieve it with

findViewById(android.R.id.list)

但迭代它的元素给preference对象不容许我设置的高度。

but iterating over its elements gives Preference objects which do not allow me to set the height.

推荐答案

下面是我如何成功地做到这一点：

Here is how I managed to do this:

我也需要继承preference但MattMatt的回答没有工作。

I did need to subclass Preference but MattMatt's answer didn't work.

public class HigherPreference extends Preference {
    public HigherPreference(Context context) {
        super(context);
    }
    public HigherPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
    }   
    @Override
    protected View onCreateView(ViewGroup parent) {
        Resources res=getContext().getResources();
        View v=super.onCreateView(parent);
        v.setLayoutParams(new AbsListView.LayoutParams(AbsListView.LayoutParams.MATCH_PARENT, res.getDimensionPixelSize(R.dimen.rowheight)));
        return v;
    }
}

布局XML是这样，他提供了什么。

The layout XML goes like what he provided.