blocks|key|208051|text|一旦你的应用程序声明鼠标(在主机上作为USB+HID设备)，Android应该隐藏光标，你就可以读取原始数据。这应该可以在现有的android上工作，但您的设备必须支持USB主机模式，并且需要USB+OTG电缆来连接鼠标。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|208052|基本步骤：|208053|208054|枚举设备|unordered-list-item|208055|请求访问USB+|208056|声明device|208057|从HID端点读取数据包|208058|从数据包中解析X和Y位置、按钮单击和滚轮旋转|208059|208060|适用于我的示例代码(Android+5.0)：|208061|UsbManager+usbManager;
UsbDevice+usbDevice;

private+void+connect()+{
++++this.usbManager+=+(UsbManager)+context.getSystemService(Context.USB_SERVICE);
++++HashMap<String,+UsbDevice>+deviceList+=+usbManager.getDeviceList();

++++//+just+get+the+first+enumerated+USB+device
++++Iterator<UsbDevice>+deviceIterator+=+deviceList.values().iterator();
++++if+(deviceIterator.hasNext())+{
++++++++this.usbDevice+=+deviceIterator.next();
++++}

++++if+(usbDevice+==+null)+{
++++++++Log.w(TAG,+"no+USB+device+found");
++++++++return;
++++}

++++//+ask+for+permission

++++final+String+ACTION_USB_PERMISSION+=+"com.android.example.USB_PERMISSION";
++++final+BroadcastReceiver+mUsbReceiver+=+new+BroadcastReceiver()+{

++++++++public+void+onReceive(Context+context,+Intent+intent)+{
++++++++++++String+action+=+intent.getAction();
++++++++++++if+(ACTION_USB_PERMISSION.equals(action))+{
++++++++++++++++synchronized+(this)+{
++++++++++++++++++++UsbDevice+device+=+(UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);

++++++++++++++++++++if+(intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED,+false))+{
++++++++++++++++++++++++if(device+!=+null){
++++++++++++++++++++++++++++//+call+method+to+set+up+device+communication
++++++++++++++++++++++++++++Log.i(TAG,+"permission+granted.+access+mouse.");

++++++++++++++++++++++++++++//+repeat+in+a+different+thread
++++++++++++++++++++++++++++transfer(device);
++++++++++++++++++++++++}
++++++++++++++++++++}
++++++++++++++++++++else+{
++++++++++++++++++++++++Log.d(TAG,+"permission+denied+for+device+"+%2B+device);
++++++++++++++++++++}
++++++++++++++++}
++++++++++++}+else+if+(UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action))+{
++++++++++++++++UsbDevice+device+=+(UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
++++++++++++++++if+(device+!=+null)+{
++++++++++++++++++++//+TODO:
++++++++++++++++++++//+call+your+method+that+cleans+up+and+closes+communication+with+the+device
++++++++++++++++++++//+usbInterface.releaseInterface();
++++++++++++++++++++//+usbDeviceConnection.close();
++++++++++++++++}
++++++++++++}
++++++++}
++++};

++++PendingIntent+mPermissionIntent+=+PendingIntent.getBroadcast(context,+0,+new+Intent(ACTION_USB_PERMISSION),+0);
++++IntentFilter+filter+=+new+IntentFilter(ACTION_USB_PERMISSION);
++++context.registerReceiver(mUsbReceiver,+filter);

++++usbManager.requestPermission(usbDevice,+mPermissionIntent);
}

private+void+transfer(UsbDevice+device)+{

++++int+TIMEOUT+=+0;
++++boolean+forceClaim+=+true;

++++//+just+grab+the+first+endpoint
++++UsbInterface+intf+=+device.getInterface(0);
++++UsbEndpoint+endpoint+=+intf.getEndpoint(0);
++++UsbDeviceConnection+connection+=+this.usbManager.openDevice(device);
++++connection.claimInterface(intf,+forceClaim);

++++byte[]+bytes+=+new+byte[endpoint.getMaxPacketSize()];

++++connection.bulkTransfer(endpoint,+bytes,+bytes.length,+TIMEOUT);

++++//+depending+on+mouse+firmware+and+vendor+the+information+you're+looking+for+may
++++//+be+in+a+different+order+or+position.+For+some+logitech+devices+the+following+
++++//+is+true:

++++int+x+=+(int)+bytes[1];
++++int+y+=+(int)+bytes[2];
++++int+scrollwheel+=+(int)+bytes[3]

++++//+call+a+listener,+process+your+data+...
}|code-block|syntax|javascript|208062|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|12|8|@]|9|@]|A|$]]|$1|H|3|I|5|G|7|13|8|@]|9|@]|A|$]]|$1|J|3|K|5|G|7|14|8|@]|9|@]|A|$]]|$1|L|3|M|5|G|7|15|8|@]|9|@]|A|$]]|$1|N|3|O|5|G|7|16|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|17|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|18|8|@]|9|@]|A|$]]|$1|S|3|T|5|U|7|19|8|@]|9|@]|A|$V|W]]|$1|X|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|Y|$]]

As soon as your Application claims the Mouse (as a USB HID device while being Host), Android should hide the cursor and you can read the raw data. This should work on stock android, but your device has to support USB Host mode and a USB OTG cable will be needed to connect the mouse.

Basic procedure:

<ul>
<li>enumerate devices</li>
<li>ask for permission to access the USB device</li>
<li>claim the device</li>
<li>read a data package from the HID endpoint</li>
<li>parse the X and Y position, button clicks and scroll wheel rotation from the data package</li>
</ul>

Example Code that works for me (Android 5.0):

<pre><code>UsbManager usbManager;
UsbDevice usbDevice;

private void connect() {
 this.usbManager = (UsbManager) context.getSystemService(Context.USB_SERVICE);
 HashMap&lt;String, UsbDevice&gt; deviceList = usbManager.getDeviceList();

 // just get the first enumerated USB device
 Iterator&lt;UsbDevice&gt; deviceIterator = deviceList.values().iterator();
 if (deviceIterator.hasNext()) {
 this.usbDevice = deviceIterator.next();
 }

 if (usbDevice == null) {
 Log.w(TAG, "no USB device found");
 return;
 }

 // ask for permission

 final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION";
 final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {

 public void onReceive(Context context, Intent intent) {
 String action = intent.getAction();
 if (ACTION_USB_PERMISSION.equals(action)) {
 synchronized (this) {
 UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);

 if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
 if(device != null){
 // call method to set up device communication
 Log.i(TAG, "permission granted. access mouse.");

 // repeat in a different thread
 transfer(device);
 }
 }
 else {
 Log.d(TAG, "permission denied for device " + device);
 }
 }
 } else if (UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)) {
 UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
 if (device != null) {
 // TODO:
 // call your method that cleans up and closes communication with the device
 // usbInterface.releaseInterface();
 // usbDeviceConnection.close();
 }
 }
 }
 };

 PendingIntent mPermissionIntent = PendingIntent.getBroadcast(context, 0, new Intent(ACTION_USB_PERMISSION), 0);
 IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
 context.registerReceiver(mUsbReceiver, filter);

 usbManager.requestPermission(usbDevice, mPermissionIntent);
}

private void transfer(UsbDevice device) {

 int TIMEOUT = 0;
 boolean forceClaim = true;

 // just grab the first endpoint
 UsbInterface intf = device.getInterface(0);
 UsbEndpoint endpoint = intf.getEndpoint(0);
 UsbDeviceConnection connection = this.usbManager.openDevice(device);
 connection.claimInterface(intf, forceClaim);

 byte[] bytes = new byte[endpoint.getMaxPacketSize()];

 connection.bulkTransfer(endpoint, bytes, bytes.length, TIMEOUT);

 // depending on mouse firmware and vendor the information you're looking for may
 // be in a different order or position. For some logitech devices the following 
 // is true:

 int x = (int) bytes[1];
 int y = (int) bytes[2];
 int scrollwheel = (int) bytes[3]

 // call a listener, process your data ...
}
</code></pre>

In my Android app, I read the values from a 3DConnexion SpaceNavigator via USB-OTG to control an <a href="https://github.com/ligi/SpaceAR.Drone" rel="nofollow noreferrer">AR.Drone</a>. 

Now I want to do the same with a mouse. However, Android is grabbing the mouse and presenting a mouse-cursor. When I write a device-filter with the vendor and product ID of the mouse, I do not get it like with the SpaceNavigator <code>(strangely, both are HID -- I get no cursor with the SpaceNavigator).</code>

Is there a way to get the raw mouse data without the cursor? 

Would be perfect with stock Android. but I would also consider altering the ROM for that.

Reading raw mouse data on android

在我的Android应用程序中，我通过USB-OTG从3DConnexion SpaceNavigator读取数据来控制。现在我想用鼠标做同样的事情。然而，Android正在抓取鼠标并呈现鼠标光标。当我使用鼠标的供应商和产品ID编写设备筛选器时，我不能像使用SpaceNavigator (strangely, both...

问在android上读取原始鼠标数据
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