landryshuai / DroidCast

An experimental demo for capturing and displaying screenshot of an Android device without ROOT permission.

DroidCast

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An experimental demo for capturing and displaying screenshot of Android devices in the WebBrowser. It's compatible with Android OS 4.0+ .

Dependencies

• Python
• ADB tool

Quick start

• Connect your device/emulator

• Install the apk

Download and install the prebuilt apk from here or install it directly:

./gradlew clean installDebug

• Run the script (using automation3.py for Python 3.6+)

python scripts/automation.py

After that, the default web browser will be opened. You should see the screenshot now.

Use it wirelessly :

• Get your device IP address (in Settings - System - About phone - Status) e.g : 192.168.x.x
• Enable adb over TCP/IP on your device: adb tcpip 5555
• Connect to your device: adb connect 192.168.x.x:5555 (replace 192.168.x.x with the actual IP address)
• Unplug your device
• Go through all the steps under Common usage

To switch back to USB mode: adb usb.

Common usage:

Note:

Once apk file installed, you can use the python scripts to automate the following adb related operations.

• Install the apk properly on the phone (Don't install it via Run 'app' from Android Studio).

./gradlew clean installDebug

• Push the apk to the tmp folder

adb push ${your-project-path}/DroidCast/app/build/outputs/apk/debug/DroidCast-debug-1.0.apk /data/local/tmp

• Start our internal server process for image processing by app_process

$ adb shell
D1C:/ $ export CLASSPATH=/data/local/tmp/DroidCast-debug-1.0.apk
D1C:/ $ exec app_process /system/bin com.rayworks.droidcast.Main '$@'
>>> DroidCast main entry

• Please note: On some devices, if you got the error "appproc: ERROR: could not find class 'com.rayworks.droidcast.Main', please replace the above value of CLASSPATH with the result returned by adb shell pm path com.rayworks.droidcast.

• Use adb forward socket connection from your pc to the connected device

$ adb forward tcp:53516 tcp:53516

• View the image via web browser http://localhost:53516/screenshot or with the specific dimension and image format, e.g. http://localhost:53516/screenshot?format=png&width=1080&height=1920

Currently png, jpeg and webp, these image types are supported.

Reference

vysor 原理以及 Android 同屏方案

scrcpy : Display and control your Android device

Alternatives

scrcpy

web-adb

AndroidScreenShot_SysApi

License

Copyright (C) 2018 rayworks

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.