根據需求，在設定介面新增一個設定選項“USB設定”

1、packages/apps/Settings/AndroidManifest.xml
新增Activity資訊

<!-- UsbDeviceSettings -->
<activity android:name="Settings$UsbDeviceSettingsActivity"
    android:label="@string/usbdevice_settings_title"
    android:icon="@drawable/ic_settings_usbdevice"
    android:taskAffinity
 
="">
    <intent-filter android:priority="1">
        <action android:name="android.settings.USB_SETTINGS" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
    <intent-filter>
        <action android:name="android.intent.action.MAIN"
 
 />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.VOICE_LAUNCH" />
        <category android:name="com.android.settings.USB_DEVICE_SETTINGS" />
    </intent-filter>
    <intent-filter android:priority
 
="2">
        <action android:name="com.android.settings.action.SETTINGS" />
    </intent-filter>
    <meta-data android:name="com.android.settings.category"
        android:value="com.android.settings.category.device" />
    <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
        android:value="com.android.settings.UsbDeviceSettings" />
    <meta-data android:name="com.android.settings.PRIMARY_PROFILE_CONTROLLED"
        android:value="true" />
</activity>

2、新增到settings.java
packages/apps/Settings/src/com/android/settings/Settings.java

public static class UsbDeviceSettingsActivity extends SettingsActivity { /* empty */ }

3、新增到SettingsActivity.java
packages/apps/Settings/src/com/android/settings/SettingsActivity.java

import com.android.settings.UsbDeviceSettings;
Settings.UsbDeviceSettingsActivity.class.getName()
UsbDeviceSettings.class.getName()

4、新增UsbDeviceSettings.java