Let's talk about the adb command configuration first. If you encounter adb is not an internal or external command, nor is it a runnable program or batch file. Configure environment variables
1. adb is not an internal or external command, nor is it a runnable program or batch file.
Solution: Find the path in my computer - properties - advanced computer configuration - environment variables, system variables, and add the platform-tools of the sdk to it.
D:\Android\SDK\platform-tools
2. Use the command line to copy the files from the phone to the computer
Window+R---"cmd open, switch to the drive letter where the picture is saved
adb pull /storage/emulated/0/1.jpg
Copy the 1.jpg image in the internal storage directory of the phone.
3. Use the command line to push the computer files to the mobile phone ( requires root mobile phone )
adb push 1.jpg /storage/emulated/0/
Save the 1.jpg image to the internal storage directory of the phone.