如何在颤动中将浮动操作按钮移动到屏幕左侧？

<!-- activity_main.xml -->
<androidx.coordinatorlayout.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <!-- Your Toolbar or other views -->
    </com.google.android.material.appbar.AppBarLayout>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        app:layout_anchorGravity="bottom|end"
        android:src="@drawable/ic_add" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>

public class MainActivity extends AppCompatActivity {
    private FloatingActionButton fab;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        fab = findViewById(R.id.fab);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
            fab.setX(fab.getX() - fab.getWidth());
        } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
            fab.setX(fab.getX() + fab.getWidth());
        }
    }
}

import UIKit

class ViewController: UIViewController {
    let fab = UIButton(type: .system)
    let fabSize = CGSize(width: 56, height: 56)

    override func viewDidLoad() {
        super.viewDidLoad()
        setupFab()
    }

    func setupFab() {
        fab.frame = CGRect(x: view.bounds.width - fabSize.width / 2, y: view.bounds.height - fabSize.height / 2, width: fabSize.width, height: fabSize.height)
        fab.backgroundColor = .blue
        fab.layer.cornerRadius = fabSize.width / 2
        fab.addTarget(self, action: #selector(fabTapped), for: .touchUpInside)
        view.addSubview(fab)

        NotificationCenter.default.addObserver(self, selector: #selector(orientationChanged), name: UIDevice.orientationDidChangeNotification, object: nil)
    }

    @objc func fabTapped() {
        // Handle FAB tap
    }

    @objc func orientationChanged() {
        if UIDevice.current.orientation.isLandscape {
            fab.frame.origin.x -= fabSize.width / 2
        } else {
            fab.frame.origin.x += fabSize.width / 2
        }
    }

    deinit {
        NotificationCenter.default.removeObserver(self, name: UIDevice.orientationDidChangeNotification, object: nil)
    }
}