在使用Android USB附件模式时,可能会引发IOError异常。这通常是由于USB附件没有正确地与Android设备通信造成的。为了解决这个问题,可以使用以下步骤:
private static final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION"; private UsbManager mUsbManager;
private void requestUsbPermission() { UsbAccessory accessory = (UsbAccessory) getIntent().getParcelableExtra(UsbManager.EXTRA_ACCESSORY); PendingIntent permissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_USB_PERMISSION), 0); mUsbManager.requestPermission(accessory, permissionIntent); }
private UsbAccessory mAccessory; private UsbManager mUsbManager; private UsbDeviceConnection mConnection;
private void openAccessory() { mAccessory = (UsbAccessory) getIntent().getParcelableExtra(UsbManager.EXTRA_ACCESSORY); mConnection = mUsbManager.openAccessory(mAccessory); }
通过以上步骤,可以避免Android USB附件模式引发IOError异常。
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