In Android Java/Kotlin development, the equivalent to sending key events via adb shell input keyevent is to use the KeyEvent class and dispatch the event to a view or the system. Here’s how you can achieve this programmatically:

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1. Sending Key Events Programmatically

You can simulate key presses using the dispatchKeyEvent method on a View (like an Activity or a View object):

java
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// Example: Simulate pressing the BACK key
KeyEvent backKey = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_BACK);
getWindow().getDecorView().dispatchKeyEvent(backKey);

Or in Kotlin:

kotlin
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val backKey = KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_BACK)
window.decorView.dispatchKeyEvent(backKey)

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2. Common KeyEvent Codes

Here are some common key codes you might use (equivalent to adb shell input keyevent codes):

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3. Notes and Limitations

• Permissions: Your app must have the appropriate permissions (e.g., android.permission.INJECT_EVENTS for system-level key injection, which is restricted).
• User Interaction: For security reasons, most apps can only send key events to their own views, not system-wide.
• Root/ADB: If you need system-wide key injection (like adb shell input keyevent), you typically need root access or ADB privileges.

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4. Example: Simulate a Volume Up Press

java
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KeyEvent volumeUp = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_VOLUME_UP);
getWindow().getDecorView().dispatchKeyEvent(volumeUp);

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5. Alternative: AccessibilityService

If you need to send key events globally (e.g., for accessibility tools), you can use an AccessibilityService with the performGlobalAction method:

java
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AccessibilityService service = ...; // Your AccessibilityService instance
service.performGlobalAction(AccessibilityService.GLOBAL_ACTION_BACK);

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