ADB’s extended key control is not merely a debugging tool—it is a for Android. While the world fixates on touch and gesture, the humble keyevent remains the most reliable, fast, and portable method for programmatic app control. From test farms running thousands of CTS-compliant key injections to hobbyists automating their home theater tablets, the ability to send a KEYCODE_MEDIA_PLAY via a shell script transforms any Android device into a obedient peripheral.
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