JellyBeanデバイスでUSBテザリングを有効にするにはどうすればよいですか？ -- 4.1-jelly-bean フィールド と usb-tethering フィールド android 関連 問題

Does JellyBean support USB tether?

Is there a way compile the JB source so USB tether is always enabled? I would like to have the support through the OS and not depend on an App.

Yes.

On ICS the setting can be found at

Settings -> Wireless & Networks -> More.. -> Tethering & portable hotspot -> USB tethering

I think it should be at the same place on Jelly Bean. Note that you need a device with a cellular data chip for this feature. Devices without (e.g. the Nexus 7) won't show this option.

USB tethering support was added with the 2.2 (Froyo) release

I successfully got native USB tethering working on the Nexus 7 with Jelly Bean.

Modify the device/asus/grouper/overlay/frameworks/base/core/res/res/values/config.xml to be the following:

<?xml version="1.0" encoding="utf-8"?> <!-- /* ** Copyright 2009, The Android Open Source Project ** ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** **     http://www.apache.org/licenses/LICENSE-2.0 ** ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. */ -->  <!-- These resources are around just to allow their values to be customized      for different hardware and product builds. --> <resources>     <!-- Flag indicating whether we should enable the automatic brightness in Settings.      config_hardware_automatic_brightness_available is not set, so we will use software implementation -->     <bool name="config_automatic_brightness_available">true</bool>      <!-- There is no charging LED. -->     <bool name="config_unplugTurnsOnScreen">true</bool>      <!-- Our amoled doesn't animate well. -->     <bool name="config_animateScreenLights">false</bool>      <!-- disable menu hard key on Crespo in non-pattern lockscreen -->     <bool name="config_disableMenuKeyInLockScreen">true</bool>      <!-- Array of light sensor LUX values to define our levels for auto backlight brightness support.      The N entries of this array define N + 1 zones as follows:       Zone 0:        0 <= LUX < array[0]      Zone 1:        array[0] <= LUX < array[1]      ...      Zone N:        array[N - 1] <= LUX < array[N]      Zone N + 1:    array[N] <= LUX < infinity       Must be overridden in platform specific overlays -->     <integer-array name="config_autoBrightnessLevels">     <item>7</item>     <item>94</item>     <item>208</item>     <item>458</item>     <item>2223</item>     </integer-array>      <!-- Array of output values for LCD backlight corresponding to the LUX values      in the config_autoBrightnessLevels array.  This array should have size one greater      than the size of the config_autoBrightnessLevels array.     -->     <integer-array name="config_autoBrightnessLcdBacklightValues">     <item>10</item>     <item>35</item>     <item>55</item>     <item>70</item>     <item>70</item>     <item>250</item>     </integer-array>      <!-- Array of output values for button backlight corresponding to the LUX values      in the config_autoBrightnessLevels array.  This array should have size one greater      than the size of the config_autoBrightnessLevels array.     -->     <integer-array name="config_autoBrightnessButtonBacklightValues">     <item>255</item>     <item>255</item>     <item>255</item>     <item>0</item>     <item>0</item>     <item>0</item>     </integer-array>      <!-- Array of output values for keyboard backlight corresponding to the LUX values      in the config_autoBrightnessLevels array.  This array should have size one greater      than the size of the config_autoBrightnessLevels array.      Crespo has no keyboard so all values are zero.     -->     <integer-array name="config_autoBrightnessKeyboardBacklightValues">     <item>0</item>     <item>0</item>     <item>0</item>     <item>0</item>     <item>0</item>     <item>0</item>     </integer-array>      <!-- Minimum screen brightness allowed by the power manager. -->     <integer name="config_screenBrightnessDim">10</integer>      <!-- Component name of the default wallpaper. This will be ImageWallpaper if not       specified -->     <string name="default_wallpaper_component">com.android.wallpaper/.nexus.NexusWallpaper</string>      <integer name="config_deskDockKeepsScreenOn">0</integer>     <integer name="config_carDockKeepsScreenOn">1</integer>      <!-- Default color for notification LED is white -->     <color name="config_defaultNotificationColor">#ffffffff</color>      <!-- Default blink frequency for notification LED is 9 seconds. -->     <integer name="config_defaultNotificationLedOff">9000</integer>      <!-- Package name providing network location support. -->     <string name="config_networkLocationProviderPackageName" translatable="false">com.google.android.location</string>      <!-- Package name providing geocoder API support. -->     <string name="config_geocodeProviderPackageName" translatable="false">com.google.android.location</string>      <!-- XXXXX NOTE THE FOLLOWING RESOURCES USE THE WRONG NAMING CONVENTION.      Please don't copy them, copy anything else. -->      <!-- This string array should be overridden by the device to present a list of network      attributes.  This is used by the connectivity manager to decide which networks can coexist      based on the hardware -->     <!-- An Array of "[Connection name],[ConnectivityManager connection type],      [associated radio-type],[priority],[restoral-timer(ms)],[dependencyMet]  -->     <!-- the 5th element "resore-time" indicates the number of milliseconds to delay      before automatically restore the default connection.  Set -1 if the connection      does not require auto-restore. -->     <!-- the 6th element indicates boot-time dependency-met value. -->     <string-array translatable="false" name="networkAttributes">     <item>"wifi,1,1,1,-1,true"</item>     <item>"mobile,0,0,0,-1,true"</item>     <item>"mobile_mms,2,0,2,60000,true"</item>     <item>"mobile_supl,3,0,2,60000,true"</item>     <item>"mobile_dun,4,0,4,60000,true"</item>     <item>"mobile_hipri,5,0,3,60000,true"</item>     <item>"bluetooth,7,7,0,-1,true"</item>     </string-array>      <!-- This string array should be overridden by the device to present a list of radio      attributes.  This is used by the connectivity manager to decide which networks can coexist      based on the hardware -->     <!-- An Array of "[ConnectivityManager connectionType],                   [# simultaneous connection types]"  -->     <string-array translatable="false" name="radioAttributes">     <item>"1,1"</item>     <item>"0,1"</item>     <item>"7,1"</item>     </string-array>      <!-- List of regexpressions describing the interface (if any) that represent tetherable      USB interfaces.  If the device doesn't want to support tething over USB this should      be empty.  An example would be "usb.*" -->     <string-array translatable="false" name="config_tether_usb_regexs">     <item>"rndis0"</item>     </string-array>      <!-- Array of allowable ConnectivityManager network types for tethering -->     <!-- Common options are [1, 4] for wifi and dun or [0,1,5,7] for -->     <!-- mobile, wifi, hipri and bluetooth -->     <integer-array translatable="false" name="config_tether_upstream_types">     <item>0</item>     <item>1</item>     <item>5</item>     <item>7</item>     </integer-array>      <!-- List of regexpressions describing the interface (if any) that represent tetherable      Wifi interfaces.  If the device doesn't want to support tethering over Wifi this      should be empty.  An example would be "softap.*" -->     <string-array translatable="false" name="config_tether_wifi_regexs">     <item>"wlan0"</item>     </string-array>      <!-- List of regexpressions describing the interface (if any) that represent tetherable      bluetooth interfaces.  If the device doesn't want to support tethering over bluetooth this      should be empty. -->     <string-array translatable="false" name="config_tether_bluetooth_regexs">     <item>"bnep\\d"</item>     </string-array>      <!-- Vibrator pattern for a very short but reliable vibration for soft keyboard tap -->     <integer-array name="config_keyboardTapVibePattern">     <item>30</item>     </integer-array>      <!-- Vibrator pattern for feedback about booting with safe mode disabled -->     <integer-array name="config_safeModeDisabledVibePattern">     <item>1</item>     </integer-array>      <!-- crespo doesn't handle this blur effect very quickly. -->     <bool name="config_sf_slowBlur">true</bool>       <!-- Boolean indicating if restoring network selection should be skipped -->     <!-- The restoring is handled by modem if it is true -->     <bool translatable="false" name="skip_restoring_network_selection">true</bool>      <!-- Specifies the amount of time to disable virtual keys after the screen is touched      in order to filter out accidental virtual key presses due to swiping gestures      or taps near the edge of the display.  May be 0 to disable the feature.      It is recommended that this value be no more than 250 ms.      This feature should be disabled for most devices. -->     <integer name="config_virtualKeyQuietTimeMillis">250</integer>      <!-- Boolean indicating if current platform supports bluetooth wide band      speech -->     <bool name="config_bluetooth_wide_band_speech">false</bool>      <bool name="config_ui_enableFadingMarquee">false</bool>      <!-- The attenuation in dB applied to the sound effects played      through AudioManager.playSoundEffect() when no volume is specified. -->     <integer name="config_soundEffectVolumeDb">-12</integer>  <string-array name="config_usbHostBlacklist">      <item>/dev/bus/usb/001</item>      </string-array>  <bool name="config_showNavigationBar">true</bool>  </resources> 

Modify out/target/product/grouper/root/init.usb.rc to be the following:

# Copyright (C) 2012 The Android Open Source Project # # USB configuration common for all android devices #  on post-fs-data     chown system system /sys/class/android_usb/android0/f_mass_storage/lun/file     chmod 0660 /sys/class/android_usb/android0/f_mass_storage/lun/file     chown system system /sys/class/android_usb/android0/f_rndis/ethaddr     chmod 0660 /sys/class/android_usb/android0/f_rndis/ethaddr  # Used to disable USB when switching states on property:sys.usb.config=none     stop adbd     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/bDeviceClass 0     setprop sys.usb.state ${sys.usb.config}  # adb only USB configuration # This should only be used during device bringup # and as a fallback if the USB manager fails to set a standard configuration on property:sys.usb.config=adb     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct D002     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/enable 1     start adbd     setprop sys.usb.state ${sys.usb.config}  # USB accessory configuration on property:sys.usb.config=accessory     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct 2d00     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/enable 1     setprop sys.usb.state ${sys.usb.config}  # USB accessory configuration, with adb on property:sys.usb.config=accessory,adb     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct 2d01     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/enable 1     start adbd     setprop sys.usb.state ${sys.usb.config}  # audio accessory configuration on property:sys.usb.config=audio_source     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct 2d02     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/enable 1     setprop sys.usb.state ${sys.usb.config}  # audio accessory configuration, with adb on property:sys.usb.config=audio_source,adb     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct 2d03     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/enable 1     start adbd     setprop sys.usb.state ${sys.usb.config}  # USB and audio accessory configuration on property:sys.usb.config=accessory,audio_source     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct 2d04     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/enable 1     setprop sys.usb.state ${sys.usb.config}  # USB and audio accessory configuration, with adb on property:sys.usb.config=accessory,audio_source,adb     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct 2d05     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/enable 1     start adbd     setprop sys.usb.state ${sys.usb.config}  # Used to set USB configuration at boot and to switch the configuration # when changing the default configuration on property:persist.sys.usb.config=*     setprop sys.usb.config ${persist.sys.usb.config}  on property:sys.usb.config=rndis     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct 4e23     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/bDeviceClass 224     write /sys/class/android_usb/android0/enable 1     setprop sys.usb.state ${sys.usb.config}  on property:sys.usb.config=rndis,adb     write /sys/class/android_usb/android0/enable 0     write /sys/class/android_usb/android0/idVendor 18d1     write /sys/class/android_usb/android0/idProduct 4e24     write /sys/class/android_usb/android0/functions ${sys.usb.config}     write /sys/class/android_usb/android0/bDeviceClass 224     write /sys/class/android_usb/android0/enable 1     start adbd     setprop sys.usb.state ${sys.usb.config} 

And use a modified tegra kernel that has RNDIS enabled.

Please reference this XDA post