问题：

adb shell input text '你好嗎' 
is not going to work.

ADBKeyboard 在这些情况下会有所帮助，尤其是在设备自动化和测试中

1. 下载

github网址：https://github.com/senzhk/ADBKeyBoard?tab=readme-ov-file
apk下载：
https://github.com/senzhk/ADBKeyBoard/blob/master/ADBKeyboard.apk
将下载好的apk放置在cmd命令同一个文件夹中，同时手机开启权限，可通过adb安装应用

2. 安装

安装命令：

adb install ADBKeyboard.apk 

设置手机输入法

adb shell ime enable com.android.adbkeyboard/.AdbIME
adb shell ime set com.android.adbkeyboard/.AdbIME   

3.示例

使用案例

import os
import base64

chars = "你好"
charsb64 = str(base64.b64encode(chars.encode("utf-8")))[1:]
os.system("adb shell am broadcast -a ADB_INPUT_B64 --es msg %s" % charsb64)

测试完成，返回原先的输入法：
原先输入法为：com.baidu.input_mi/.ImeService

adb shell ime set com.baidu.input_mi/.ImeService

其他命令

adb shell ime list -a   # Check your available virtual keyboards
adb shell ime reset  # Reset to default, don't care which keyboard was chosen before switch