To open a specific app on a specific display using ADB (Android Debug Bridge), you can use a combination of ADB commands to achieve this. Here's a step-by-step guide:

1. Identify the App Package Name

First, you need the package name of the app you want to open. You can find it using:

adb shell pm list packages | grep "app_name"

Replace "app_name" with a keyword related to the app (e.g., "chrome" for Google Chrome).

Alternatively, if you already know the app, you can list all installed packages:

adb shell pm list packages

2. Identify the Display ID

To target a specific display, you need its display ID. List all connected displays:

adb shell dumpsys display

Look for the HDR10DisplayManager or DisplayManager section to find the display IDs (e.g., HDR10DisplayManager: mDisplays=[0, 1]).

3. Launch the App on the Specified Display

Use the am start command with the --display flag to launch the app on the desired display:

adb shell am start -n <package_name>/<activity_name> --display <display_id>

• Replace <package_name> with the app's package name (e.g., com.android.chrome).
• Replace <activity_name> with the main activity of the app (e.g., com.google.android.apps.chrome.Main).
• Replace <display_id> with the target display ID (e.g., 1).

Example:

To open Google Chrome on display 1:

adb shell am start -n com.android.chrome/com.google.android.apps.chrome.Main --display 1

4. Verify the App Launched on the Correct Display

Check the display's content or use:

adb shell dumpsys window | grep "mCurrentFocus"

This will show the currently focused window and its display.

Notes:

• Permissions: Ensure USB debugging is enabled on the device, and ADB is authorized.
• Activity Name: If you don't know the activity name, use:
  bash

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  adb shell cmd package resolve-activity -c android.intent.category.LAUNCHER <package_name>

• Multi-Display Support: Not all apps support multi-display. If the app doesn't open on the specified display, it may not support this feature.