Question

我正在尝试从本文学习增强现实基础知识： http://www.devx.com/wireless/Article/42482/0/page/2

当它运行时，相机采取了相反的方向。我的问题是如何使用相机获得固定和普通的视图。这是CustomCameraView类：

package com.syariati.camera;

import android.content.Context;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class CustomCameraView extends SurfaceView {
    Camera camera;
    SurfaceHolder surfaceHolder;

    public CustomCameraView(Context context){
        super(context);
        surfaceHolder = this.getHolder();
        surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        surfaceHolder.addCallback(surfaceHolderListener);
    }

    SurfaceHolder.Callback surfaceHolderListener = new SurfaceHolder.Callback() {

        @Override
        public void surfaceDestroyed(SurfaceHolder holder) {
            // TODO Auto-generated method stub
            camera.stopPreview();
            camera.release();
        }

        @Override
        public void surfaceCreated(SurfaceHolder holder) {
            // TODO Auto-generated method stub
            camera = Camera.open();
            try{
                camera.setPreviewDisplay(surfaceHolder);
            }
            catch(Exception e){
                e.printStackTrace();
            }
        }

        @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width,
                int height) {
            // TODO Auto-generated method stub
            Parameters params = camera.getParameters();
            params.setPictureFormat(PixelFormat.JPEG);
            camera.setParameters(params);
            camera.startPreview();
        }
    };
}

我应该在params上添加另一种方法吗？

抱歉我的英语不好。谢谢。

这就是问题的解决方法。

添加：

camera.setDisplayOrientation(90);

Android - Camera preview is sideways

Answer 1

根据您的要求设置方向度，因为我有90用户前置摄像头和270度后置摄像头：

Camera.Parameters params = camera.getParameters();
params.set("rotation", 90);
camera.setParameters(params);

Answer 2

转到您的应用程序AndroidManifest.xml文件，然后按

Application tab -> select CustomCameraView activity -> 
attributes for CustomCameraView activity -> screen orientation -> select portrait.

然后运行 - 恩乔伊...

Android相机定位

2 个答案: