如何在"设置->关于手机"界面添加 Logo

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package com.android.settings;

import

import

import

import

import

import

import

android.content.Context;

android.preference.Preference;

android.util.AttributeSet;

android.view.View;

android.view.ViewGroup;

android.widget.RadioButton;

android.widget.RelativeLayout;

public class LogoPreference   extends Preference   {

/**

* @param context

* @param attrs

* @param defStyle

*/

public LogoPreference(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

init();

}

/**

* @param context

* @param attrs

*/

public LogoPreference(Context context, AttributeSet attrs) {

super(context, attrs);

init();

}

/**

* @param context

*/

public LogoPreference(Context context) {

super(context);

init();

}

private void init()   {

setLayoutResource(R.layout.logo_preference_layout);

}

@Override

public View getView(View convertView, ViewGroup parent) {

View view = super.getView(convertView,   parent);

return view;

}

}

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<?xml version="1.0" encoding="utf-8" ?>

- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent" android:layout_height="200dip" android:minHeight="

?android:attr/listPreferredItemHeight"   android:orientation="vertical" android:gravity="

center_vertical">

<ImageView android:id="@+android:id/icon" android:layout_width="300dip"

android:layout_height="200dip" android:paddingStart="0dip" android:paddingEnd="0dip"

android:layout_gravity="center_vertical" />

- <RelativeLayout android:id="@+android:id/text_layout" android:layout_width="0dip"

android:layout_height="0dip" android:paddingStart="0dip" android:paddingEnd="0dip"

android:gravity="center_vertical" android:layout_weight="1" android:focusable="true"

android:background="@drawable/list_selector_holo_dark">

<TextView android:id="@+android:id/title" android:layout_width="0dip"

android:layout_height="wrap_content" android:focusable="true" android:singleLine="true"

android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView android:id="@+android:id/summary" android:layout_width="0dip"

android:layout_height="wrap_content" android:layout_below="@android:id/title"

android:layout_alignStart="@android:id/title" android:textAppearance="

?android:attr/textAppearanceSmall" android:maxLines="2" />

</RelativeLayout>

</LinearLayout>

3:在Setting的device_info_settings.xml中添加一个

LogoPreference

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

android:title="@string/about_settings">

<com.android.settings.LogoPreference android:key="jasonAAA" android:icon="@drawable/

pic_indicator" />