[android] 간단한 카메라 소스(autoFocus 포함)

우선 xml 입니다

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity" >

    

    <com.example.cameratest2.MyCameraSurface

        android:id="@+id/previewFrame"

        android:layout_width="fill_parent"

        android:layout_height="match_parent"

        android:layout_below="@+id/button1" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:text="Capture" />

</RelativeLayout>

java 파일입니다

package com.example.cameratest2;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.Calendar;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.hardware.Camera;

import android.hardware.Camera.AutoFocusCallback;

import android.hardware.Camera.PictureCallback;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.util.AttributeSet;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends Activity {

Button mShutter;

MyCameraSurface mSurface;

String mRootPath;

static final String PICFOLDER = "CameraTest";

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        

        mSurface = (MyCameraSurface)findViewById(R.id.previewFrame);

        

        mShutter = (Button)findViewById(R.id.button1);

  mShutter.setOnClickListener(new Button.OnClickListener() {

  public void onClick(View v) {

  mSurface.mCamera.autoFocus(mAutoFocus);

 

  }

  });

 

  //저장할 공간 /mnt/sdcard/CameraTest 이렇게 폴더 안에 파일이 생성된다

  mRootPath = Environment.getExternalStorageDirectory().getAbsolutePath() + 

"/" + PICFOLDER;

File fRoot = new File(mRootPath);

if (fRoot.exists() == false) {

if (fRoot.mkdir() == false) {

Toast.makeText(this, "사진을 저장할 폴더가 없습니다.", 1).show();

finish();

return;

}

}

    }

    

 // 포커싱 성공하면 촬영 허가

  AutoFocusCallback mAutoFocus = new AutoFocusCallback() {

  public void onAutoFocus(boolean success, Camera camera) {

  mShutter.setEnabled(success);

  mSurface.mCamera.takePicture(null, null, mPicture);

  }

  };

 

  // 사진 저장.

  PictureCallback mPicture = new PictureCallback() {

  public void onPictureTaken(byte[] data, Camera camera) {

 

  //날짜로 파일 이름 만들기

  Calendar calendar = Calendar.getInstance();

  String FileName = String.format("SH%02d%02d%02d-%02d%02d%02d.jpg", 

  calendar.get(Calendar.YEAR) % 100, calendar.get(Calendar.MONTH)+1, 

  calendar.get(Calendar.DAY_OF_MONTH), calendar.get(Calendar.HOUR_OF_DAY), 

  calendar.get(Calendar.MINUTE), calendar.get(Calendar.SECOND));

  String path = mRootPath + "/" + FileName;

 

  File file = new File(path);

  try {

  FileOutputStream fos = new FileOutputStream(file);

  fos.write(data);

  fos.flush();

  fos.close();

  } catch (Exception e) {

 

  return;

  }

 

  //파일을 갤러리에 저장

  Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);

  Uri uri = Uri.parse("file://" + path);

  intent.setData(uri);

  sendBroadcast(intent);

  Toast.makeText(getApplicationContext(), "사진이 저장 되었습니다", 0).show();

  camera.startPreview();

  }

  };

    

}

class MyCameraSurface extends SurfaceView implements SurfaceHolder.Callback {

SurfaceHolder mHolder;

Camera mCamera;

public MyCameraSurface(Context context, AttributeSet attrs) {

super(context, attrs);

mHolder = getHolder();

mHolder.addCallback(this);

mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

}

// 표면 생성시 카메라 오픈하고 미리보기 설정

public void surfaceCreated(SurfaceHolder holder) {

mCamera = Camera.open();

mCamera.setDisplayOrientation(90);

try {

mCamera.setPreviewDisplay(mHolder);

} catch (IOException e) {

mCamera.release();

mCamera = null;

}

}

    // 표면 파괴시 카메라도 파괴한다.

public void surfaceDestroyed(SurfaceHolder holder) {

if (mCamera != null) {

mCamera.stopPreview();

mCamera.release();

mCamera = null;

}

}

// 표면의 크기가 결정될 때 최적의 미리보기 크기를 구해 설정한다.

    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

Camera.Parameters params = mCamera.getParameters();

        params.setPreviewSize(width, height);

        params.setPictureSize(width, height);

        params.setRotation(90);

mCamera.setParameters(params);

mCamera.startPreview();

}

    

}

CameraTest2.zip