How to control Xiaomi phones to take long screenshots and save them to your phone through ADB?

ADB control Xiaomi mobile phone long screenshot: Exploration and practice

Many Android users need to intercept content that is beyond the scope of the screen, especially pages containing scrolling content. This article discusses how to use ADB (Android Debug Bridge) to implement long screenshots on Xiaomi phones and save them to your phone. The goal is to capture the complete content of the 1600x720 resolution screen and generate a long screenshot of 3200x720, leaving blank space in the insufficient part.

The following picture shows a scene that requires a long screenshot (the content exceeds a single screen):

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And scenes where the content is not filled with the screen:

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Although ChatGPT provides a method of splicing through multiple screenshots, this method is prone to repeated content and is inefficient. Given that the Android system comes with long screenshot function, we hope to find a more direct ADB call method.

However, there is currently no common ADB command that directly calls the long screenshot API of all Xiaomi phones. Different system versions and manufacturer customization may lead to differences. The following steps provide an attempt:

1. Connect your phone to your computer: Make sure that the Xiaomi phone connects to your computer via USB and that the USB debugging mode is turned on.

2. Open the command line: Open the command prompt (Windows) or terminal (macOS/Linux) on the computer.

3. Verify the connection: Enter the following command to confirm the device connection:

    adb devices

4. Try to simulate long screenshots: Try to simulate system screenshot shortcuts, but this is not applicable to all Xiaomi phones:

    adb shell input keyevent keycode_sysrq

5. Check screenshots: If successful, the screenshots should be saved to the phone's default screenshot folder. Use the following command to view:

    adb shell ls /sdcard/Pictures/Screenshots

It should be noted that due to system version and manufacturer differences, ADB commands may not work perfectly on all Xiaomi phones. If the above method is invalid, consider using automated testing tools such as Appium or UIAutomator to simulate user operations to achieve long screenshots.

If the ADB method fails to achieve the expected results, it is recommended to use the long screenshot function that comes with the phone for manual operation.

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