android connect usb device

Last time, I was initially exposed to the mounting problem of Android USB client, so I wrote the first article about the feelings. There are still some problems in many places, some of which are not clear enough, so I want to continue writing. First, the last verification shows that the device can be mounted, but only one storage

Android Studio Solutions for USB device not foundWhen we use Android Studio for Android Development, when we use the real machine for debugging, there is a good chance that USB device n

Start with two open source projects one is Google's Open source project: https://code.google.com/archive/p/android-serialport-api/The other is the open source project we introduced this time: https://github.com/mik3y/usb-serial-for-android　　First step: Get all the plugged-in serial drivers1 Usbmanager manager = (usbmanager) Getsystemservice (context.usb_service);

Suppose the API or APK in the Android system cannot read and write to the USB device. may not be added to read and write USB permissions, you need to follow such as the following methods to set up:1. Include the following in the android.hardware.usb.host.xml file, for example name="android.hardware.usb.host"/>

,Then the Roothub driver then manages its own port and the USB device connected to the port.Port on the root hub can not only connect to a real USB device, but it can alsoEach sub-hub can be connected to a real USB

connection) \ n");} else {Claims exclusive access to a usbinterface.This must is done before sending or receiving data onAny usbendpoints belonging to the interface.Connection.claiminterface (intf, true);Getrawdescriptors can used to access descriptorsNot supported directly via the higher level APIs,Like getting the manufacturer and product names.Because it returns bytes, you can get a variety ofDifferent data types.byte[] Rawdescs = Connection.getrawdescriptors ();String manufacturer = "", Pro

If the API or APK in the Android system is unable to read or write to the USB device, it may not be possible to add read/write USB permissions, which need to be set as follows:1. In the android.hardware.usb.host.xml file, add the following: name="Android.hardware.usb.host" /> 2. In tablet_core_hardware. Add th

Android and PC socket (TCP/IP) Communication (by USB) Refuse to connect Time: Source: Csdn community Author: Joy_liut Click: Scenario 1:Android_server:Final int server_port = 12345;Private void startserver (){Try{Log. E ("s: Connecting ...","");Serversocket = new serversocket (server_port );While (true){Socket Client = serversocket. Accept ();Log. E ("s: inser

[Transfer from]http://blog.csdn.net/kuanxu/article/details/7444874Recently, because you want to debug your code on another Android device, check its log on your native PC. Two machines away from the relatively far, can not be directly connected with the USB, so find a lot of information on the Internet, the most find using the ADB

A, mobile phone USB can not be connected to the computer because the phone is not installed driver, can download pea pods and other software to drive installation. Two, the second mobile phone USB not connected to the computer solution without installing anything, you put your mobile phone connected to the computer, click the phone settings-application-development--USB