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>