1. 确保已经在 Manifest.xml 文件中添加相机权限。

2. 确保正确设置相机预览视图的大小。

3. 在 SurfaceView 或 TextureView 上设置 SurfaceHolder 或 SurfaceTexture 作为相机预览的输出目标。

4. 确保正确实现相机回调，以及在合适的时间调用依赖于相机的方法，比如停止预览或释放相机。

以下是一段基本的代码示例，用于设置相机预览的 SurfaceView：

public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
 
    private Camera camera;

    public CameraPreview(Context context, Camera camera) {
        super(context);
        this.camera = camera;

        // Install a SurfaceHolder.Callback so we get notified when the
        // underlying surface is created and destroyed.
        SurfaceHolder holder = getHolder();
        holder.addCallback(this);
        // deprecated setting, but required on Android versions prior to 3.0
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }

    public void surfaceCreated(SurfaceHolder holder) {
        // The Surface has been created, now tell the camera where to draw the preview.
        try {
            camera.setPreviewDisplay(holder);
            camera.startPreview();
        } catch (IOException e) {
            Log.d("CameraPreview", "Error setting camera preview: " + e.getMessage());
        }
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
        // empty. Take care of releasing the Camera preview in your activity.
    }

    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
        // If your preview can change or rotate, take care of those events here.
        // Make sure to stop the preview before resizing or reformatting it.
        if (getHolder().getSurface() == null){
          // preview surface does not exist
          return;
        }

        // stop preview before making changes
        try {
            camera.stopPreview();
        } catch (Exception e){
          // ignore: tried to stop a non-existent preview
        }

        // set preview size and make any resize, rotate or