我尝试在笔记本电脑(win7)和我的android手机(Android 4.2)之间建立USB连接。 笔记本电脑应充当主机来为android手机供电。目标是笔记本和手机可以发送和接收xml字符串Android(配件模式)和Windows PC(主机)之间的USB通信
我试图按照说明配件模式的Android页面(http://developer.android.com/guide/topics/connectivity/usb/accessory.html)。
1: 我必须定义一个辅助过滤器,他们没有像在这里:
<?xml version="1.0" encoding="utf-8"?> <resources> <usb-accessory model="DemoKit" manufacturer="Google" version="1.0"/> </resources>
因为我不想被识别的特殊硬件。我想要识别所有类型的Windows电脑(例如,我将手机插入另一台电脑)。
2: 我做窗户上侧没有现在。我只是按照android页面,插入usb电缆并观看日志。应用程序开始请求许可,但附件为空。任何暗示为什么它是空的? 代码:
public class MainActivity extends Activity { private static final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION"; private static final String TAG = "USB_PERMISSION"; UsbAccessory accessory; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); UsbManager manager = (UsbManager) getSystemService(Context.USB_SERVICE); PendingIntent mPermissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_USB_PERMISSION), 0); IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION); registerReceiver(mUsbReceiver, filter); accessory = (UsbAccessory) getIntent().getParcelableExtra( UsbManager.EXTRA_ACCESSORY); manager.requestPermission(accessory, mPermissionIntent); } private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (ACTION_USB_PERMISSION.equals(action)) { synchronized (this) { if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) { String manufacturer; Log.d(TAG, "permission accepted for accessory " + accessory); if (accessory != null) { manufacturer = accessory.getManufacturer(); Log.d(TAG, "Manufacturer: " + manufacturer); } } else { Log.d(TAG, "permission denied for accessory "+ accessory); } } } } }; }
3:是否有任何libarys /项目,我可以用它来识别在Windows端USB连接?
- 4:我应该考虑更多的事情吗?事情是错的?
- 5:THX对您有所帮助:)
所以我猜#1现在更清晰了。 Intentfilter仅用于自动检测 – B770 2013-04-11 11:52:52