在空白surfaceView打开相机 [英] Open Camera in a blank surfaceView

问题描述

我很新到Android编程和所有我想要做的是表面视图中打开摄像头应用程序，以便我可以打开相机到它，并设置一些参数，如下面的？

I am very new to android programming and All I want to do is open camera app in surface view so that I can open camera into it and set some parameters like following?

Camera camera = Camera.open();
 Parameters p = camera.getParameters();
 p.setFlashMode(Parameters.FLASH_MODE_ON);
 camera.setParameters(p);
 camera.startPreview();        
 camera.release();

我碰到评论是说，我要过的表面。所以我已经创建下列表面：

I came across comments saying that I HAVE to pass a surface. so I have created following surface:

package com.example.fcloader;

import java.io.IOException;

import android.content.Context;
import android.view.SurfaceView;
import android.view.SurfaceHolder;
import android.hardware.Camera;


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

        public CameraSurfaceView(Context context) 
        {
                super(context);

                //Initiate the Surface Holder properly
                this.holder = this.getHolder();
                this.holder.addCallback(this);
                this.holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        }

        @Override
        public void surfaceCreated(SurfaceHolder holder) 
        {
                try
                {
                        //Open the Camera in preview mode
                        this.camera = Camera.open();
                        this.camera.setPreviewDisplay(this.holder);
                }
                catch(IOException ioe)
                {
                        ioe.printStackTrace(System.out);
                }
        }

        @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) 
        {
                // Now that the size is known, set up the camera parameters and begin
                // the preview.
                Camera.Parameters parameters = camera.getParameters();
                parameters.setPreviewSize(width, height);
                camera.setParameters(parameters);
                camera.startPreview();
        }


        @Override
        public void surfaceDestroyed(SurfaceHolder holder) 
        {
                // Surface will be destroyed when replaced with a new screen
                //Always make sure to release the Camera instance
                camera.stopPreview();
                camera.release();
                camera = null;
        }

        public Camera getCamera()
        {
                return this.camera;
        }
}

这是基本的表面，我在网上得到了code。我的问题是，我应该怎么改变，使这些东西与对方合作？

This is code of basic surface that I got online. My question is that What should I change to make these things work with each other?

推荐答案

在 camera.start preVIEW（）你写 preview.setCamera（摄像头）设置摄像头。 preVIEW 是你的类的对象延伸 SurfaceView 和农具 SurfaceHolder.Callback 。

After camera.startPreview() you have to write preview.setCamera(camera) to set camera. preview is the object of your class which extends SurfaceView and implements SurfaceHolder.Callback.

camera.startPreview();
preview.setCamera(camera);

这篇关于在空白surfaceView打开相机的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！