在選單Setting加入子選單
可以模仿Settings其他選單項加入自己想要的一級或二級子選單項。
比如，在選單Settings里加入一級和二級Usb Mode Settings選單項 (以Android4.4 KK為例)
一. 加入一級子選單項Usb Mode Settings, 加在About phone後面
1. packages/apps/Settings/AndroidManifest.xml
<activity android:name="Settings$DeviceInfoSettingsActivity"
android:theme="@style/Theme.Holo.DialogWhenLarge"
android:label="@string/device_info_settings"
android:taskAffinity="com.android.settings"
android:parentActivityName="Settings">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.settings.DEVICE_INFO_SETTINGS" />
<category android:name="android.intent.category.DEFAULT" />db
<category android:name="android.intent.category.VOICE_LAUNCH" />
</intent-filter>
<meta-data android:name="com.android.settings.FRAGMENT_CLASS"
android:value="com.android.settings.DeviceInfoSettings" />
<meta-data android:name="com.android.settings.TOP_LEVEL_HEADER_ID"
android:resource="@id/about_settings" />
</activity>
<activity android:name="Settings$UsbModeSettingsActivity"
android:theme="@style/Theme.SubSettingsDialogWhenLarge"
android:label="@string/usb_mode_settings"
android:taskAffinity="com.android.settings"
android:parentActivityName="Settings">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.settings.USB_MODE_SETTINGS" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<meta-data android:name="com.android.settings.FRAGMENT_CLASS"
android:value="com.android.settings.UsbModeSettings" />
<meta-data android:name="com.android.settings.TOP_LEVEL_HEADER_ID"
android:resource="@id/usb_mode_settings" />
</activity>
2. packages/apps/Settings/res/xml/settings_headers.xml
<!-- About Device -->
<dashboard-tile
android:id="@+id/about_settings"
android:title="@string/about_settings"
android:fragment="com.android.settings.DeviceInfoSettings"
android:icon="@drawable/ic_settings_about"
/>
<!-- Usb Mode -->
<dashboard-tile
android:id="@+id/usb_mode_settings"
android:title="@string/usb_mode_settings"
android:fragment="com.android.settings.UsbModeSettings"
android:icon="@drawable/ic_settings_about"
/>
Lollipop
packages\apps\Settings\res\xml\dashboard_categories.xml
<!-- Usb Mode -->
<dashboard-tile
android:id="@+id/usb_mode_settings"
android:title="@string/usb_mode_settings"
android:fragment="com.android.settings.UsbModeSettings"
android:icon="@drawable/ic_settings_about"
/>
3. packages\apps\Settings\src\com\android\settings\Settings.java
public static class DeviceInfoSettingsActivity extends SettingsActivity { /* empty */ }
+ public static class UsbModeSettingsActivity extends SettingsActivity { /* empty */ }
public static class ApplicationSettingsActivity extends SettingsActivity { /* empty */ }
4. packages/apps/Settings/src/com/android/settings/Settings.java
DeviceInfoSettings.class.getName(),
+ UsbModeSettings.class.getName(),
ManageApplications.class.getName(),
Lollipop
packages\apps\Settings\src\com\android\settings\SettingsActivity.java
DeviceInfoSettings.class.getName(),
+ UsbModeSettings.class.getName(),
ManageApplications.class.getName(),
5. packages/apps/Settings/res/values/strings.xml
增加新字串
新增部分
6. packages/apps/Settings/res/drawable/
新增圖示
7. 模仿packages/apps/Settings/res/xml/device_info_settings.xml新加一layout檔案
packages/apps/Settings/res/xml/usb_mode_settings.xml
android:title="@string/about_settings">
<!-- Device status - launches activity -->
<PreferenceScreen android:key="status_info"
android:title="@string/device_status"
android:summary="@string/device_status_summary">
<intent android:action="android.intent.action.MAIN"
android:targetPackage="com.android.settings"
android:targetClass="com.android.settings.deviceinfo.Status" />
</PreferenceScreen>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:title="@string/usb_mode_settings">
<PreferenceCategory
android:title="@string/usb_connection_category" />
<CheckBoxPreference
android:key="usb_mtp"
android:title="@string/usb_mtp_title"
android:summary="@string/usb_mtp_summary"
/>
<CheckBoxPreference
android:key="usb_mass_storage"
android:title="@string/usb_ptp_title"
android:summary="@string/usb_ptp_summary"
/>
</PreferenceScreen>
8. 模仿packages/apps/Settings/src/com/android/settings/DeviceInfoSettings.java新加一程式碼實現
packages/apps/Settings/src/com/android/settings/UsbModeSettings.java
二. 加入一級子選單項Usb Mode Settings, 加在Developer options下面, 在"Desktop backup password"後面
1.packages/apps/Settings/AndroidManifest.xml
<activity android:name="SetFullBackupPassword"
android:theme="@style/Theme.SubSettingsDialogWhenLarge"
android:exported="false">
</activity>
<activity android:name="UsbModeSettings"
android:theme="@style/Theme.SubSettingsDialogWhenLarge"
android:exported="false">
</activity>
2. packages/apps/Settings/res/xml/development_prefs.xml
<PreferenceScreen
android:key="local_backup_password"
android:title="@string/local_backup_password_title"
android:summary="@string/local_backup_password_summary_none"
android:persistent="false" >
<intent
android:action="android.settings.privacy.SET_FULL_BACKUP_PASSWORD"
android:targetPackage="com.android.settings"
android:targetClass="com.android.settings.SetFullBackupPassword" />
</PreferenceScreen>
<PreferenceScreen
android:key="usb_mode"
android:title="@string/usb_mode_settings"
android:summary="@string/usb_mode_settings_summary"
<intent
android:action="android.intent.action.MAIN"
android:targetPackage="com.android.settings"
android:targetClass="com.android.settings.UsbModeSettings" />
</PreferenceScreen>
3. /packages/apps/Settings/res/values/strings.xml
+ <string name="usb_mode_settings">USB mode settings</string>
......
4. 新加檔案
res/layout/usb_mode_settings.xml
packages/apps/Settings/res/drawable/ 圖示
src/com/android/settings/UsbModeSettings.java