[ubuntu][android][adb]no permissions (udev requires plugdev group membership)

在 ubuntu 1404 64位機終端上輸入  adb devices

顯示如下的不愉快：

0123456789ABCDEF    no permissions (udev requires plugdev group membership); see [http://developer.android.com/tools/device.html]

這會導致無法測試 CTS 和 GTS。查找 android 官方資料，解決方法如下：

1. 終端 輸入命令： lsusb

Bus 002 Device 003: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 125: ID 0e8d:200a MediaTek Inc.
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

找到手機對應的那一行，這裡是
Bus 001 Device 125: ID 0e8d:200a MediaTek Inc.

2. 然後 

vim /etc/udev/rules.d/51-android.rules

添加以下這行到文件中：

SUBSYSTEM=="usb", ATTR{idVendor}=="0e8d", MODE="200a", GROUP="plugdev"
3. 再執行

chmod a+r /etc/udev/rules.d/51-android.rules
4. 再執行以下命令

adb kill-server

adb devices
就顯示如下的了：

List of devices attached

0123456789ABCDEF    device

[參考]:
https://developer.android.com/studio/run/device.html#developer-device-options
內容複製如下：

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Android Studio

    Features User Guide

navigation

User Guide

    Meet Android Studio

    Workflow Basics

    Manage Your Project

    Write Your App

    Build and Run Your App

        Run Apps on the Emulator

        Run Apps on a Hardware Device

            Install OEM USB Drivers

            Get the Google USB Driver

        Create Run/Debug Configurations

        Build Your App from the Command Line

    Configure Your Build

    Debug Your App

    Test Your App

    Profile Your App

    Publish Your App

    Command Line Tools

    Release Notes

    Troubleshoot

    Back to Developers

    Download

    Features

    User Guide

Run Apps on a Hardware Device

In this document

    Enabling On-device Developer Options

    Setting up a Device for Development

        USB Vendor IDs

See also

    Install USB Drivers

    Google USB Driver

When building an Android app, it's important that you always test your application on a real device before releasing it to users. This page describes how to set up your development environment and Android-powered device for testing and debugging on the device.

You can use any Android-powered device as an environment for running, debugging, and testing your applications. The tools included in the SDK make it easy to install and run your application on the device each time you compile. You can install your application
on the device directly from Android Studio or from the command line with ADB. If you don't yet have a device, check with the service providers in your area to determine which Android-powered devices are available.

If you want a SIM-unlocked phone, then you might consider a Nexus phone. To purchase a Nexus phone, visit the Google Play store.

Note: When developing on a device, keep in mind that you should still use the Android emulator to test your application on configurations that are not equivalent to those of your real device. Although the emulator does not allow you to test every device feature,
it does allow you to verify that your application functions properly on different versions of the Android platform, in different screen sizes and orientations, and more.

Enabling On-device Developer Options

Android-powered devices have a host of developer options that you can access on the phone, which let you:

    Enable debugging over USB.

    Quickly capture bug reports onto the device.

    Show CPU usage on screen.

    Draw debugging information on screen such as layout bounds, updates on GPU views and hardware layers, and other information.

    Plus many more options to simulate app stresses or enable debugging options.

To access these settings, open the Developer options in the system Settings. On Android 4.2 and higher, the Developer options screen is hidden by default. To make it visible, go to Settings > About phone and tap Build number seven times. Return to the previous
screen to find Developer options at the bottom.

Setting up a Device for Development

With an Android-powered device, you can develop and debug your Android applications just as you would on the emulator. Before you can start, there are just a few things to do:

    Verify that your application is "debuggable" in your manifest or build.gradle file.

    In the build file, make sure the debuggable property in the debug build type is set to true. The build type property overrides the manifest setting.

    android {

        buildTypes {

            debug {

                debuggable true

            }

    In the AndroidManifest.xml file, add android:debuggable="true" to the <application> element.

    Note: If you manually enable debugging in the manifest file, be sure to disable it in your release build (your published application should usually not be debuggable).

    Enable USB debugging in the device system settings, under Settings > Developer options.

    Note: On Android 4.2 and newer, Developer options is hidden by default. To make it available, go to Settings > About phone and tap Build number seven times. Return to the previous screen to find Developer options.

    Set up your system to detect your device.

        If you're developing on Windows, you need to install a USB driver for adb. For an installation guide and links to OEM drivers, see the OEM USB Drivers document.

        If you're developing on Mac OS X, it just works. Skip this step.

        If you're developing on Ubuntu Linux, you need to add a udev rules file that contains a USB configuration for each type of device you want to use for development. In the rules file, each device manufacturer is identified by a unique vendor ID, as specified
by the ATTR{idVendor} property. For a list of vendor IDs, see USB Vendor IDs, below. To set up device detection on Ubuntu Linux:

            Log in as root and create this file: /etc/udev/rules.d/51-android.rules.

            Use this format to add each vendor to the file:

            SUBSYSTEM=="usb", ATTR{idVendor}=="0bb4", MODE="0666", GROUP="plugdev"

            In this example, the vendor ID is for HTC. The MODE assignment specifies read/write permissions, and GROUP defines which Unix group owns the device node.

            Note: The rule syntax may vary slightly depending on your environment. Consult the udev documentation for your system as needed. For an overview of rule syntax, see this guide to writing udev rules.

            Now execute:

            chmod a+r /etc/udev/rules.d/51-android.rules

Note: When you connect a device running Android 4.2.2 or higher to your computer, the system shows a dialog asking whether to accept an RSA key that allows debugging through this computer. This security mechanism protects user devices because it ensures that
USB debugging and other adb commands cannot be executed unless you're able to unlock the device and acknowledge the dialog. This requires that you have adb version 1.0.31 (available with SDK Platform-tools r16.0.1 and higher) in order to debug on a device
running Android 4.2.2 or higher.

When plugged in over USB, you can verify that your device is connected by executing adb devices from your SDK platform-tools/ directory. If connected, you'll see the device name listed as a "device."

If using Android Studio, run or debug your application as usual. You will be presented with a Device Chooser dialog that lists the available emulator(s) and connected device(s). Select the device upon which you want to install and run the application.

If using the Android Debug Bridge (adb), you can issue commands with the -d flag to target your connected device.

USB Vendor IDs

This table provides a reference to the vendor IDs needed in order to add USB device support on Linux. The USB Vendor ID is the value given to the ATTR{idVendor} property in the rules file, as described above.

Company    USB Vendor ID

Acer     0502

ASUS     0b05

Dell     413c

Foxconn     0489

Fujitsu     04c5

Fujitsu Toshiba     04c5

Garmin-Asus     091e

Google     18d1

Haier     201E

Hisense     109b

HP     03f0

HTC     0bb4

Huawei     12d1

Intel     8087

K-Touch     24e3

KT Tech     2116

Kyocera     0482

Lenovo     17ef

LG     1004

Motorola     22b8

MTK     0e8d

NEC     0409

Nook     2080

Nvidia     0955

OTGV     2257

Pantech     10a9

Pegatron     1d4d

Philips     0471

PMC-Sierra     04da

Qualcomm     05c6

SK Telesys     1f53

Samsung     04e8

Sharp     04dd

Sony     054c

Sony Ericsson     0fce

Sony Mobile Communications     0fce

Teleepoch     2340

Toshiba     0930

ZTE     19d2

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