要解决Android Pie AOSP默认相机方向问题，您可以尝试以下代码示例：

1. 在Manifest.xml文件中添加以下代码，以确保应用程序支持横向模式：

2. 在MainActivity.java文件中，添加以下代码以旋转相机传感器方向：

import android.content.pm.ActivityInfo;
import android.hardware.Camera;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import java.io.IOException;

public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback {
    private SurfaceView surfaceView;
    private SurfaceHolder surfaceHolder;
    private Camera camera;

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

        surfaceView = findViewById(R.id.surfaceView);
        surfaceHolder = surfaceView.getHolder();
        surfaceHolder.addCallback(this);
    }

    private void setCameraDisplayOrientation() {
        Camera.CameraInfo info = new Camera.CameraInfo();
        Camera.getCameraInfo(0, info);
        int rotation = getWindowManager().getDefaultDisplay().getRotation();
        int degrees = 0;

        switch (rotation) {
            case Surface.ROTATION_0:
                degrees = 0;
                break;
            case Surface.ROTATION_90:
                degrees = 90;
                break;
            case Surface.ROTATION_180:
                degrees = 180;
                break;
            case Surface.ROTATION_270:
                degrees = 270;
                break;
        }

        int result;
        if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
            result = (info.orientation + degrees) % 360;
            result = (360 - result) % 360;  // 翻转前置摄像头
        } else {
            result = (info.orientation - degrees + 360) % 360;
        }

        camera.setDisplayOrientation(result);
    }

    @Override
    public void surfaceCreated(SurfaceHolder surfaceHolder) {
        camera = Camera.open();
        setCameraDisplayOrientation();

        try {
            camera.setPreviewDisplay(surfaceHolder);
            camera.startPreview();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
        if (surfaceHolder.getSurface() == null) {
            return;
        }

        try {
            camera.stopPreview();
        } catch (Exception e) {
            e.printStackTrace();
        }

        try {
            camera.setPreviewDisplay(surfaceHolder);
            camera.startPreview();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
        camera.stopPreview();
        camera.release();
        camera = null;
    }
}

请确保在您的布局文件（例如activity_main.xml）中添加一个SurfaceView元素：

这样，相机传感器将被旋转到右侧90度，并且显示屏将处于正确的横向模式。