![Serial connection error: java.lang.NoClassDefFoundError: android.hardware. usb.UsbManager - #4 by Taifun - MIT App Inventor Help - MIT App Inventor Community Serial connection error: java.lang.NoClassDefFoundError: android.hardware. usb.UsbManager - #4 by Taifun - MIT App Inventor Help - MIT App Inventor Community](https://community.appinventor.mit.edu/uploads/default/original/3X/f/1/f1dea2c074d842bc3085f7987718789583708553.jpeg)
Serial connection error: java.lang.NoClassDefFoundError: android.hardware. usb.UsbManager - #4 by Taifun - MIT App Inventor Help - MIT App Inventor Community
![Android App for USB Host (with source code) – Mobile App Development, Android App Development, iphone App Development Android App for USB Host (with source code) – Mobile App Development, Android App Development, iphone App Development](http://mobilemerit.com/wp-content/uploads/2014/07/usb_2.jpg)
Android App for USB Host (with source code) – Mobile App Development, Android App Development, iphone App Development
Delphi-Android-USB-HID/android.hardware.usb.UsbManager.pas at master · LongDirtyAnimAlf/Delphi-Android-USB-HID · GitHub
![Serial connection error: java.lang.NoClassDefFoundError: android.hardware. usb.UsbManager - #4 by Taifun - MIT App Inventor Help - MIT App Inventor Community Serial connection error: java.lang.NoClassDefFoundError: android.hardware. usb.UsbManager - #4 by Taifun - MIT App Inventor Help - MIT App Inventor Community](https://community.appinventor.mit.edu/uploads/default/original/3X/6/1/61876e001f8e1fadbd3cecc0433c5a084adbed81.jpeg)