유용한팁

CameraEx.java

import android.app.Activity;
import android.os.Bundle;
import android.view.Window;

//카메라의 제어
public class CameraEx extends Activity {
    //애플리케이션 초기화
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(new CameraView(this));
    }
}

CameraView.java

import android.content.Context;
import android.hardware.Camera;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import java.io.FileOutputStream;

//카메라의 제어
public class CameraView extends SurfaceView
    implements SurfaceHolder.Callback {
    private SurfaceHolder holder;//홀더
    private Camera        camera;//카메라

    //생성자
    public CameraView(Context context) {
        super(context);

        // SurfaceHolder 생성
        holder=getHolder();
        holder.addCallback(this);

        // Push Buffer 지정
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }

    //Surface 생성시 호출
    public void surfaceCreated(SurfaceHolder holder) {
        //카메라의 초기화
      try {
            camera=Camera.open();
            camera.setPreviewDisplay(holder);
      } catch (Exception e) {
      }
    }

    //Surface 변경 이벤트 처리
    public void surfaceChanged(SurfaceHolder holder,int format,int w,int h) {
        // 카메라의 리뷰 개시
        Camera.Parameters parameters=camera.getParameters();
        parameters.setPreviewSize(w,h);
        camera.setParameters(parameters);
        camera.startPreview();
    }

    //Surface 해제 이벤트 처리
    public void surfaceDestroyed(SurfaceHolder holder) {
        //카메라 프리뷰의 개시
        camera.setPreviewCallback(null);
        camera.stopPreview();
        camera.release();
        camera=null;
    }
    //터치 이벤트 처
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction()==MotionEvent.ACTION_DOWN) {
            takePicture();
            camera.startPreview();
        }
        return true;
    }

    //사진 촬영
    public void takePicture() {
        //카메라의 스크린샷 취득
        camera.takePicture(null,null,new Camera.PictureCallback() {
            public void onPictureTaken(byte[] data,Camera camera) {
                try {
                    data2sd(getContext(),data,"test.jpg");
                } catch (Exception e) {
                    android.util.Log.e("",""+e.toString());
                }
            }
        });
    }

    //바이트 데이터 -> SD 카드
    private static void data2sd(Context context,
        byte[] w,String fileName) throws Exception {
        //SD카드의 데이터 저장
        FileOutputStream fos=null;
        try {
            fos=new FileOutputStream("/sdcard/"+fileName);
            fos.write(w);
            fos.close();
        } catch (Exception e) {
            if (fos!=null) fos.close();
            throw e;
        }
    }
}

AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="net.npaka.cameraex"
      android:versionCode="1"
      android:versionName="1.0.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".CameraEx"
                  android:label="@string/app_name" android:screenOrientation="landscape">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-permission android:name="android.permission.CAMERA" />
</manifest>

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