package com.jph.camera;
?
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.graphics.ImageFormat;
import android.hardware.Camera;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.ShutterCallback;
import android.os.Bundle;
import android.os.Environment;
import android.util.DisplayMetrics;
import android.view.Display;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
/**
?* 控制手機(jī)拍照
?* @author jph
?* Date:2014.08.20
?* */
public class CaptureImage extends Activity
{
?? ?SurfaceView sView;
?? ?SurfaceHolder surfaceHolder;
?? ?int screenWidth, screenHeight;
?? ?// 定義系統(tǒng)所用的照相機(jī)
?? ?Camera camera;
?? ?// 是否在預(yù)覽中
?? ?boolean isPreview = false;
?
?? ?@Override
?? ?public void onCreate(Bundle savedInstanceState)
?? ?{
?? ??? ?super.onCreate(savedInstanceState);
?? ??? ?// 設(shè)置全屏
?? ??? ?requestWindowFeature(Window.FEATURE_NO_TITLE);
?? ??? ?getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
?? ??? ??? ?WindowManager.LayoutParams.FLAG_FULLSCREEN);
?? ??? ?setContentView(R.layout.main);
?? ??? ?// 獲取窗口管理器
?? ??? ?WindowManager wm = getWindowManager();
?? ??? ?Display display = wm.getDefaultDisplay();
?? ??? ?DisplayMetrics metrics = new DisplayMetrics();
?? ??? ?// 獲取屏幕的寬和高
?? ??? ?display.getMetrics(metrics);
?? ??? ?screenWidth = metrics.widthPixels;
?? ??? ?screenHeight = metrics.heightPixels;
?? ??? ?// 獲取界面中SurfaceView組件
?? ??? ?sView = (SurfaceView) findViewById(R.id.sView);?? ?
?? ??? ?// 獲得SurfaceView的SurfaceHolder
?? ??? ?surfaceHolder = sView.getHolder();
?? ??? ?// 為surfaceHolder添加一個回調(diào)監(jiān)聽器
?? ??? ?surfaceHolder.addCallback(new Callback()
?? ??? ?{
?? ??? ??? ?@Override
?? ??? ??? ?public void surfaceChanged(SurfaceHolder holder, int format,
?? ??? ??? ??? ?int width, int height)
?? ??? ??? ?{
?? ??? ??? ?}
?
?? ??? ??? ?@Override
?? ??? ??? ?public void surfaceCreated(SurfaceHolder holder)
?? ??? ??? ?{
?? ??? ??? ??? ?// 打開攝像頭
?? ??? ??? ??? ?initCamera();
?? ??? ??? ?}
?
?? ??? ??? ?@Override
?? ??? ??? ?public void surfaceDestroyed(SurfaceHolder holder)
?? ??? ??? ?{
?? ??? ??? ??? ?// 如果camera不為null ,釋放攝像頭
?? ??? ??? ??? ?if (camera != null)
?? ??? ??? ??? ?{
?? ??? ??? ??? ??? ?if (isPreview) camera.stopPreview();
?? ??? ??? ??? ??? ?camera.release();
?? ??? ??? ??? ??? ?camera = null;
?? ??? ??? ??? ?}
?? ??? ??? ?}
?? ??? ?});
?? ?}
?
?? ?private void initCamera()
?? ?{
?? ??? ?if (!isPreview)
?? ??? ?{
?? ??? ??? ?// 此處默認(rèn)打開后置攝像頭。
?? ??? ??? ?// 通過傳入?yún)?shù)可以打開前置攝像頭
?? ??? ??? ?camera = Camera.open(0); ?//①
?? ??? ??? ?camera.setDisplayOrientation(90);
?? ??? ?}
?? ??? ?if (camera != null && !isPreview)
?? ??? ?{
?? ??? ??? ?try
?? ??? ??? ?{
?? ??? ??? ??? ?Camera.Parameters parameters = camera.getParameters();
?? ??? ??? ??? ?// 設(shè)置預(yù)覽照片的大小
?? ??? ??? ??? ?parameters.setPreviewSize(screenWidth, screenHeight);
?? ??? ??? ??? ?// 設(shè)置預(yù)覽照片時每秒顯示多少幀的最小值和最大值
?? ??? ??? ??? ?parameters.setPreviewFpsRange(4, 10);
?? ??? ??? ??? ?// 設(shè)置圖片格式
?? ??? ??? ??? ?parameters.setPictureFormat(ImageFormat.JPEG);
?? ??? ??? ??? ?// 設(shè)置JPG照片的質(zhì)量
?? ??? ??? ??? ?parameters.set("jpeg-quality", 85);
?? ??? ??? ??? ?// 設(shè)置照片的大小
?? ??? ??? ??? ?parameters.setPictureSize(screenWidth, screenHeight);
?? ??? ??? ??? ?// 通過SurfaceView顯示取景畫面
?? ??? ??? ??? ?camera.setPreviewDisplay(surfaceHolder); ?//②
?? ??? ??? ??? ?// 開始預(yù)覽
?? ??? ??? ??? ?camera.startPreview(); ?//③
?? ??? ??? ?}
?? ??? ??? ?catch (Exception e)
?? ??? ??? ?{
?? ??? ??? ??? ?e.printStackTrace();
?? ??? ??? ?}
?? ??? ??? ?isPreview = true;
?? ??? ?}
?? ?}
?? ?/**
?? ? * 此方法在布局文件中調(diào)用
?? ? * */
?? ?public void capture(View source)
?? ?{
?? ??? ?if (camera != null)
?? ??? ?{
?? ??? ??? ?// 控制攝像頭自動對焦后才拍照
?? ??? ??? ?camera.autoFocus(autoFocusCallback); ?//④
?? ??? ?}
?? ?}
?
?? ?AutoFocusCallback autoFocusCallback = new AutoFocusCallback()
?? ?{
?? ??? ?// 當(dāng)自動對焦時激發(fā)該方法
?? ??? ?@Override
?? ??? ?public void onAutoFocus(boolean success, Camera camera)
?? ??? ?{
?? ??? ??? ?if (success)
?? ??? ??? ?{
?? ??? ??? ??? ?// takePicture()方法需要傳入3個監(jiān)聽器參數(shù)
?? ??? ??? ??? ?// 第1個監(jiān)聽器：當(dāng)用戶按下快門時激發(fā)該監(jiān)聽器
?? ??? ??? ??? ?// 第2個監(jiān)聽器：當(dāng)相機(jī)獲取原始照片時激發(fā)該監(jiān)聽器
?? ??? ??? ??? ?// 第3個監(jiān)聽器：當(dāng)相機(jī)獲取JPG照片時激發(fā)該監(jiān)聽器
?? ??? ??? ??? ?camera.takePicture(new ShutterCallback()
?? ??? ??? ??? ?{
?? ??? ??? ??? ??? ?public void onShutter()
?? ??? ??? ??? ??? ?{
?? ??? ??? ??? ??? ??? ?// 按下快門瞬間會執(zhí)行此處代碼
?? ??? ??? ??? ??? ?}
?? ??? ??? ??? ?}, new PictureCallback()
?? ??? ??? ??? ?{
?? ??? ??? ??? ??? ?public void onPictureTaken(byte[] data, Camera c)
?? ??? ??? ??? ??? ?{
?? ??? ??? ??? ??? ??? ?// 此處代碼可以決定是否需要保存原始照片信息
?? ??? ??? ??? ??? ?}
?? ??? ??? ??? ?}, myJpegCallback); ?//⑤
?? ??? ??? ?}
?? ??? ?}
?? ?};
?
?? ?PictureCallback myJpegCallback = new PictureCallback()
?? ?{
?? ??? ?@Override
?? ??? ?public void onPictureTaken(byte[] data, Camera camera)
?? ??? ?{
?? ??? ??? ?// 根據(jù)拍照所得的數(shù)據(jù)創(chuàng)建位圖
?? ??? ??? ?final Bitmap bm = BitmapFactory.decodeByteArray(data, 0,
?? ??? ??? ??? ?data.length);
?? ??? ??? ?String fileName=getFileNmae();
?? ??? ??? ?if (fileName==null) return;
?? ??? ??? ?// 創(chuàng)建一個位于SD卡上的文件
?? ??? ??? ?File file = new File(fileName);
?? ??? ??? ?FileOutputStream outStream = null;
?? ??? ??? ?try
?? ??? ??? ?{
?? ??? ??? ??? ?// 打開指定文件對應(yīng)的輸出流
?? ??? ??? ??? ?outStream = new FileOutputStream(file);
?? ??? ??? ??? ?// 把位圖輸出到指定文件中
?? ??? ??? ??? ?bm.compress(CompressFormat.JPEG, 100,
?? ??? ??? ??? ??? ?outStream);
?? ??? ??? ??? ?outStream.close();
?? ??? ??? ??? ?Toast.makeText(CaptureImage.this, "照片以保存到"+fileName,?
?? ??? ??? ??? ??? ??? ?Toast.LENGTH_SHORT).show();
?? ??? ??? ?}
?? ??? ??? ?catch (IOException e)
?? ??? ??? ?{
?? ??? ??? ??? ?e.printStackTrace();
?? ??? ??? ?}?? ??? ??? ?
?? ??? ??? ??? ?
?? ??? ??? ?// 重新瀏覽
?? ??? ??? ?camera.stopPreview();
?? ??? ??? ?camera.startPreview();
?? ??? ??? ?isPreview = true;
?? ??? ?}
?? ?};
?? ?/**
?? ? * 返回攝取照片的文件名
?? ? * @return 文件名
?? ? * */
?? ?protected String getFileNmae() {
?? ??? ?// TODO Auto-generated method stub
?? ??? ?String fileName;
?? ??? ?if (!Environment.getExternalStorageState().equals
?? ??? ??? ??? ?(Environment.MEDIA_MOUNTED)) {
?? ??? ??? ?Toast.makeText(this, "監(jiān)測到你的手機(jī)沒有插入SD卡，請插入SD卡后再試",?
?? ??? ??? ??? ??? ?Toast.LENGTH_LONG).show();
?? ??? ??? ?return null;
?? ??? ?}
?? ??? ?SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH.mm.ss", Locale.getDefault());?? ??? ?
?? ??? ?fileName=Environment.getExternalStorageDirectory()+File.separator
?? ??? ??? ??? ?+sdf.format(new Date())+".JPG";
?? ??? ?return fileName;
?? ?}
}