adb push command not working android kitkat(4.4)

Question

我是 android 的新手，我想将文件从 PC 推送到应用程序内部存储器中，adb push 命令在所有 android 版本中都可以正常工作，但在 Kitkat(4.4) 中却没有说权限被拒绝我坚持这个问题，请帮我解决这个问题。

Answer 1

adb requires authorization from the device itself in recent releases. See this announcement which mentions:

Since Android 4.2.2, connections to ADB are authenticated with an RSA keypair. This prevents unauthorized use of ADB where the attacker has physical access to a device

Once you enable developer mode, starting adb should cause the phone to show a prompt asking you to authorize the new connection.