Failed to install XXX.apk on device 'HT0B8RX02778': Too many open files Essentially, that means you have a memory problem. More than likely it is a leak. First restart your phone and verify you are still getting the error. If so you are going to need to start digging in your code and find out where you are leaking! Android端末を再起動する。 Failed to install XXX.apk on device 'HT0B8RX02778': Unable to ope