ADBKeyBoard

ADBKeyBoard is a virtual keyboard that receives commands from system broadcast intents, which you can send text input using adb.

There is a shell command 'input', which can help you send text input to the Android system.

usage: input [text|keyevent] input text input keyevent But you cannot send unicode characters using this command, as it is not designed to use it this way. Reference : http://stackoverflow.com/questions/14224549/adb-shell-input-unicode-character

e.g. adb shell input text '你好嗎' is not going to work. ADBKeyboard will help in these cases, especially in device automation and testings.