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http://blog.csdn.net/androidlinuxg/article/details/17069173
还在百度Google导出搜索如何进行USB接口的HID进行开发吗?网站上很多文章并不完善,这方便的也介绍的不多,我看了很多资料,借助网上的一些代码,整理了以下信息,希望能给大家提供便捷
首先请大家仔细看看Google官方并不详细的SDK文档http://developer.android.com/guide/topics/connectivity/usb/host.html
Android系统3.1及以上版本才能支持USBHOST,这样我们才能连接HID设备进行通讯
项目新建完成之后,AndroidManifest.xml中加入以下代码
然后res下增加xml文件夹,新建device_filter.xml,并加入一下代码,这里是声明HID设备VID以及PID,注意是10进制
下面就是java代码了,直接贴完整代码吧
001.
/*
002.
* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
005.
* you may not use this file except in compliance with the License.
006.
* You may obtain a copy of the License at
007.
*
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*
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* Unless required by applicable law or agreed to in writing, software
011.
* distributed under the License is distributed on an "AS IS" BASIS,
012.
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013.
* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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017.
package
com.android.missilelauncher;
018.
019.
import
java.nio.ByteBuffer;
020.
import
java.util.ArrayList;
021.
import
java.util.Arrays;
022.
import
java.util.HashMap;
023.
import
java.util.Iterator;
024.
025.
import
android.app.Activity;
026.
import
android.content.Context;
027.
import
android.content.Intent;
028.
import
android.hardware.Sensor;
029.
import
android.hardware.SensorEvent;
030.
import
android.hardware.SensorEventListener;
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import
android.hardware.SensorManager;
032.
import
android.hardware.usb.UsbConstants;
033.
import
android.hardware.usb.UsbDevice;
034.
import
android.hardware.usb.UsbDeviceConnection;
035.
import
android.hardware.usb.UsbEndpoint;
036.
import
android.hardware.usb.UsbInterface;
037.
import
android.hardware.usb.UsbManager;
038.
import
android.hardware.usb.UsbRequest;
039.
import
android.os.Bundle;
040.
import
android.util.Log;
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import
android.view.Gravity;
042.
import
android.view.View;
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import
android.view.View.OnClickListener;
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import
android.widget.ArrayAdapter;
045.
import
android.widget.Button;
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import
android.widget.ListView;
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import
android.widget.TextView;
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import
android.widget.Toast;
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public
class
MissileLauncherActivity
extends
Activity {
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052.
private
static
final
String TAG =
"MissileLauncherActivity"
;
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private
Button btsend;
// 发送按钮
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private
UsbManager manager;
// USB管理器
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private
UsbDevice mUsbDevice;
// 找到的USB设备
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private
ListView lsv1;
// 显示USB信息的
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private
UsbInterface mInterface;
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private
UsbDeviceConnection mDeviceConnection;
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@Override
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public
void
onCreate(Bundle savedInstanceState) {
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super
.onCreate(savedInstanceState);
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setContentView(R.layout.launcher);
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btsend = (Button) findViewById(R.id.btsend);
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btsend.setOnClickListener(btsendListener);
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lsv1 = (ListView) findViewById(R.id.lsv1);
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// 获取USB设备
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manager = (UsbManager) getSystemService(Context.USB_SERVICE);
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if
(manager ==
null
) {
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return
;
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}
else
{
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Log.i(TAG,
"usb设备:"
+ String.valueOf(manager.toString()));
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}
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HashMap<String, UsbDevice> deviceList = manager.getDeviceList();
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Log.i(TAG,
"usb设备:"
+ String.valueOf(deviceList.size()));
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Iterator<UsbDevice> deviceIterator = deviceList.values().iterator();
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ArrayList<String> USBDeviceList =
new
ArrayList<String>();
// 存放USB设备的数量
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while
(deviceIterator.hasNext()) {
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UsbDevice device = deviceIterator.next();
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USBDeviceList.add(String.valueOf(device.getVendorId()));
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USBDeviceList.add(String.valueOf(device.getProductId()));
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// 在这里添加处理设备的代码
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if
(device.getVendorId() ==
6790
&& device.getProductId() ==
57360
) {
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mUsbDevice = device;
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Log.i(TAG,
"找到设备"
);
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}
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}
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// 创建一个ArrayAdapter
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lsv1.setAdapter(
new
ArrayAdapter<String>(
this
,
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android.R.layout.simple_list_item_1, USBDeviceList));
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findIntfAndEpt();
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}
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// 寻找接口和分配结点
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private
void
findIntfAndEpt() {
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if
(mUsbDevice ==
null
) {
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Log.i(TAG,
"没有找到设备"
);
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return
;
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}
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for
(
int
i =
0
; i < mUsbDevice.getInterfaceCount();) {
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// 获取设备接口,一般都是一个接口,你可以打印getInterfaceCount()方法查看接
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// 口的个数,在这个接口上有两个端点,OUT 和 IN
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UsbInterface intf = mUsbDevice.getInterface(i);
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Log.d(TAG, i +
" "
+ intf);
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mInterface = intf;
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break
;
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}
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if
(mInterface !=
null
) {
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UsbDeviceConnection connection =
null
;
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// 判断是否有权限
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if
(manager.hasPermission(mUsbDevice)) {
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// 打开设备,获取 UsbDeviceConnection 对象,连接设备,用于后面的通讯
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connection = manager.openDevice(mUsbDevice);
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if
(connection ==
null
) {
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return
;
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}
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if
(connection.claimInterface(mInterface,
true
)) {
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Log.i(TAG,
"找到接口"
);
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mDeviceConnection = connection;
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// 用UsbDeviceConnection 与 UsbInterface 进行端点设置和通讯
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getEndpoint(mDeviceConnection, mInterface);
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}
else
{
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connection.close();
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}
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}
else
{
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Log.i(TAG,
"没有权限"
);
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}
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}
else
{
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Log.i(TAG,
"没有找到接口"
);
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}
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}
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private
UsbEndpoint epOut;
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private
UsbEndpoint epIn;
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// 用UsbDeviceConnection 与 UsbInterface 进行端点设置和通讯
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private
void
getEndpoint(UsbDeviceConnection connection, UsbInterface intf) {
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if
(intf.getEndpoint(
1
) !=
null
) {
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epOut = intf.getEndpoint(
1
);
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}
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if
(intf.getEndpoint(
0
) !=
null
) {
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epIn = intf.getEndpoint(
0
);
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}
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}
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private
byte
[] Sendbytes;
// 发送信息字节
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private
byte
[] Receiveytes;
// 接收信息字节
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private
OnClickListener btsendListener =
new
OnClickListener() {
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int
ret = -
100
;
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@Override
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public
void
onClick(View v) {
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String testString =
"010A"
;
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//String testString = "C783CC30";
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byte
[] bt = clsPublic.HexString2Bytes(testString);
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Sendbytes = Arrays.copyOf(bt, bt.length);
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// 1,发送准备命令
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ret = mDeviceConnection.bulkTransfer(epOut, Sendbytes,
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Sendbytes.length,
5000
);
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Log.i(TAG,
"已经发送!"
);
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// 2,接收发送成功信息
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Receiveytes =
new
byte
[
32
];
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ret = mDeviceConnection.bulkTransfer(epIn, Receiveytes,
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Receiveytes.length,
10000
);
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Log.i(TAG,
"接收返回值:"
+ String.valueOf(ret));
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if
(ret !=
32
) {
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DisplayToast(
"接收返回值"
+ String.valueOf(ret));
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return
;
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}
else
{
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// 查看返回值
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DisplayToast(clsPublic.Bytes2HexString(Receiveytes));
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Log.i(TAG, clsPublic.Bytes2HexString(Receiveytes));
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}
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}
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};
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public
void
DisplayToast(CharSequence str) {
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Toast toast = Toast.makeText(
this
, str, Toast.LENGTH_LONG);
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// 设置Toast显示的位置
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toast.setGravity(Gravity.TOP,
0
,
200
);
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// 显示Toast
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toast.show();
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}
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}
步骤五:我在步骤四的代码中包含有个类clsPublic,这个类是用来转换十六进制和字符串的,一般来说大家也不需要,但是考虑代码完整性,我也贴上来。这个类和MainActivity是在同一个包名下的文件clsPublic.java。
package com.example.usbmanager; public class clsPublic { // 整数到字节数组转换 public static byte[] int2bytes(int n) { byte[] ab = new byte[4]; ab[0] = (byte) (0xff & n); ab[1] = (byte) ((0xff00 & n) >> 8); ab[2] = (byte) ((0xff0000 & n) >> 16); ab[3] = (byte) ((0xff000000 & n) >> 24); return ab; } // 字节数组到整数的转换 public static int bytes2int(byte b[]) { int s = 0; s = ((((b[0] & 0xff) << 8 | (b[1] & 0xff)) << 8) | (b[2] & 0xff)) << 8 | (b[3] & 0xff); return s; } // 字节转换到字符 public static char byte2char(byte b) { return (char) b; } private final static byte[] hex = "0123456789ABCDEF".getBytes(); private static int parse(char c) { if (c >= ‘a‘) return (c - ‘a‘ + 10) & 0x0f; if (c >= ‘A‘) return (c - ‘A‘ + 10) & 0x0f; return (c - ‘0‘) & 0x0f; } // 从字节数组到十六进制字符串转换 public static String Bytes2HexString(byte[] b) { byte[] buff = new byte[2 * b.length]; for (int i = 0; i < b.length; i++) { buff[2 * i] = hex[(b[i] >> 4) & 0x0f]; buff[2 * i + 1] = hex[b[i] & 0x0f]; } return new String(buff); } // 从十六进制字符串到字节数组转换 public static byte[] HexString2Bytes(String hexstr) { byte[] b = new byte[hexstr.length() / 2]; int j = 0; for (int i = 0; i < b.length; i++) { char c0 = hexstr.charAt(j++); char c1 = hexstr.charAt(j++); b[i] = (byte) ((parse(c0) << 4) | parse(c1)); } return b; } }
步骤六:
制作完成软件后,安装到设备上,或者直接用Eclipse调试运行。然后插入USB-HID设备,幸运的话,你会看到系统弹出一个打开方式的提示(我的设备是这样的,其他设备不知道是什么结果)。
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原文地址:http://www.cnblogs.com/I-L-o-v-e-z-h-o-u/p/4476445.html