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there are some image for help

hello?

mediaRouter = MediaRouter.getInstance(this); mSelector = new MediaRouteSelector.Builder() .addControlCategory(MediaControlIntent.CATEGORY_REMOTE_PLAYBACK) .build(); mediaRouter.addCallback(mSelector,mediaRouterCallback, CALLBACK_FLAG_PERFORM_ACTIVE_SCAN);

}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);

    // Inflate the menu and configure the media router action provider.
    getMenuInflater().inflate(R.menu.menu, menu);

    // Attach the MediaRouteSelector to the menu item
    MenuItem mediaRouteMenuItem = menu.findItem(R.id.media_route_menu_item);
    MediaRouteActionProvider mediaRouteActionProvider =
            (MediaRouteActionProvider) MenuItemCompat.getActionProvider(mediaRouteMenuItem);
    // Attach the MediaRouteSelector that you built in onCreate()
    mediaRouteActionProvider.setRouteSelector(mSelector);

    // Return true to show the menu.
    return true;
}

okay so this is my code for searching wireless device on same network it found route default phone only i don't know why i tried every possible ways and stuck into this topic from week please help. Thanks in advance...

Please reproduce the issue on a device running Android U or later, and while the dialog is open please capture a bugreport using adb bugreport and share the output here.

okay i will but i just want to let you know that i am unable to find any wireless device actually fire tv and roku tv etc wireless displays are next to me but this code doesn't work for detecting device.