android 拍照+拍照button 以及返回按钮布局

公司最近做一个项目拍照总是崩溃，所以决定自己写一个拍照的方法，在网上调研一番，写了一个简单demo，现共享如下

主要CameraActivity

CameraActivity

package com.wondertek.video.camera;

import java.io.FileOutputStream;

import android.app.Activity;

import android.hardware.Camera;

import android.hardware.Camera.AutoFocusCallback;

import android.hardware.Camera.PictureCallback;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.WindowManager;

import android.widget.Button;

import android.widget.FrameLayout;

import com.wondertek.xsgj.R;

/**

 *

 * @Description:TODO 拍照优化

 * @author:skyCc

 * @time:2014-6-6 下午5:03:10

 */

public class CameraActivity extends Activity {

    public static final int CAMERA_RESULT = 1234;

    public static final int REQUEST_PICKER_ALBUM = 2345;

    private static String TAG = "CameraObserver";

    public static String photopath = "";

    Button buttonExit;

    Button buttonCapture;

    private Camera mCamera;

    private CameraViewNew mPreview;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        // CameraObserver已经将photopath路径传过来了

        Log.d(TAG, "CameraActivity onCreate photopath = " + photopath);

        getWindow().clearFlags(

                WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);

        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.capture_activity);

        mCamera = getCameraInstance();

        // 创建预览类，并与Camera关联，最后添加到界面布局中

        mPreview = new CameraViewNew(this, mCamera);

        FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);

        preview.addView(mPreview);

        // requestWindowFeature(Window.FEATURE_NO_TITLE);// 设置横屏模式以及全屏模式

        // setContentView(new CameraView(this,photopath)); //设置View

        buttonCapture = (Button) findViewById(R.id.button_capture);

        buttonCapture.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                // TODO Auto-generated method stub

                mCamera.autoFocus(new AutoFocusCallback() {

                    @Override

                    public void onAutoFocus(boolean success, Camera camera) {

                        // TODO Auto-generated method stub

                        mCamera.takePicture(null, null, myPicture);

                    }

                });

            }

        });

        buttonExit=(Button) findViewById(R.id.button_exit);

        buttonExit.setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {

                // TODO Auto-generated method stub

                finish();

            }

        });

    }

    /** 打开一个Camera */

    public static Camera getCameraInstance() {

        Camera c = null;

        try {

            c = Camera.open();

        } catch (Exception e) {

            Log.d(TAG, "打开Camera失败失败");

        }

        return c;

    }

    private PictureCallback myPicture = new PictureCallback() {

        @Override

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

            // TODO Auto-generated method stub

            Log.d(TAG, " onPictureTaken = " + photopath);

            try {

                if (photopath.length() > 0)

                    data2file(data, photopath);

            } catch (Exception e) {

            }

            camera.stopPreview();

        }

        private void data2file(byte[] w, String fileName) throws Exception {// 将二进制数据转换为文件的函数

            FileOutputStream out = null;

            try {

                out = new FileOutputStream(fileName);

                out.write(w);

                out.close();

            } catch (Exception e) {

                if (out != null)

                    out.close();

                throw e;

            }

        }

    };

}

CameraViewNew

package com.wondertek.video.camera;

import java.io.IOException;

import org.jivesoftware.smack.sasl.SASLMechanism.Success;

import android.content.Context;

import android.hardware.Camera;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

import android.view.SurfaceHolder.Callback;

/**

 * @Description:TODO重新布局拍照的界面

 * @author:skyCc

 * @time:2014-6-5 下午11:33:11

 */

public class CameraViewNew extends SurfaceView implements Callback{

private final static String TAG="CameraView";

private Camera mCamera;

private SurfaceHolder mHolder;

    public CameraViewNew(Context context,Camera camera) {

        super(context);

        mCamera=camera;

        mHolder=getHolder();

        mHolder.addCallback(this);

        mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

        // TODO Auto-generated constructor stub

    }

    @Override

    public void surfaceChanged(SurfaceHolder holder, int format, int width,

            int height) {

        // TODO Auto-generated method stub

        if(mHolder.getSurface()==null){

            return ;

        }

        mCamera.stopPreview();

        try {

            mCamera.setPreviewDisplay(holder);

            mCamera.startPreview();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

    @Override

    public void surfaceCreated(SurfaceHolder holder) {

        // TODO Auto-generated method stub

        try {

            mCamera.setPreviewDisplay(holder);

            mCamera.startPreview();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

    @Override

    public void surfaceDestroyed(SurfaceHolder holder) {

        // TODO Auto-generated method stub

        mCamera.setPreviewCallback(null);

        mCamera.stopPreview();

        mCamera.release();

        mCamera =null;

    }

}

capture_activity.xm

<?xml version="1.0" encoding="utf-8"?>

 <LinearLayout

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

   android:orientation="horizontal"

     android:layout_width="fill_parent"

     android:layout_height="fill_parent"

     >

    <FrameLayout

     android:id="@+id/camera_preview"

     android:layout_width="fill_parent"

    android:layout_height="fill_parent"

   android:layout_weight="1"

     />

   <Button

    android:id="@+id/button_capture"

     android:text="拍照"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

     android:layout_gravity="center"

    />

   <Button

        android:text="返回"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/button_exit"

        android:layout_gravity="center"

    />

 </LinearLayout>