Android手机拍照和手机相册选取图片的工具类ImageUtils

package com.shentaiwang.jsz.savepatient.util;import android.app.Activity;import android.content.ContentValues;import android.content.Context;import android.content.Intent;import android.database.Cursor;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.PorterDuff;import android.graphics.PorterDuffXfermode;import android.graphics.Rect;import android.graphics.RectF;import android.net.Uri;import android.os.Environment;import android.provider.MediaStore;import android.util.DisplayMetrics;import android.util.Log;import android.view.WindowManager;import android.widget.Toast;import java.io.BufferedOutputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Locale;/** * Created by user on 2016/12/16. */public class ImageUtil {    public static final int CODE_SETHDIMG_ALNUM = 1;    public static final int CODE_SETHDIMG_CAM = 2;    public static final int CROP_IMG = 100;    public File camImgFile = null;    public File cropImgFile = null;    public void gotoCam(Context context) {        try {        //获取当前系统的android版本号        int currentApiVersion = android.os.Build.VERSION.SDK_INT;        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault());        String str = dateFormat.format(new Date(System.currentTimeMillis()));        //设置保存拍摄照片路径(DCIM/Camera/Modle_PictureWall_img_20170212_122223.jpg)        //路径默认，若修改则不能保存照片        camImgFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM), "/Camera/Modle_PictureWall_img_" + str + ".jpg");        Uri outputImgUriFromCam = null;        if (currentApiVersion < 24) {            outputImgUriFromCam = Uri.fromFile(camImgFile);        } else {            ContentValues contentValues = new ContentValues(1);            contentValues.put(MediaStore.Images.Media.DATA, camImgFile.getAbsolutePath());                outputImgUriFromCam = context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);        }        //跳转到照相机拍照        Intent it = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);        it.putExtra(MediaStore.EXTRA_OUTPUT, outputImgUriFromCam);        ((Activity) context).startActivityForResult(it, CODE_SETHDIMG_CAM);//        startActivityForResult(it,CODE_SETHDIMG_CAM);        }catch (Exception e){            Toast.makeText(context,"请开启摄像权限",Toast.LENGTH_SHORT).show();        }    }    public void gotoAlbum(Context context) {        Intent it = new Intent(Intent.ACTION_PICK,                android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);        ((Activity) context).startActivityForResult(it, CODE_SETHDIMG_ALNUM);//        startActivityForResult(it,CODE_SETHDIMG_ALNUM);    }    public void cropImg(Context context, boolean isFromCam, boolean isSetHd, Intent data, String fileName) {        File inputFile = null;        if (isFromCam) {            inputFile = camImgFile;        } else {            Log.d("ImageUtil", "cropImg:图片数据： "+data.getData());            inputFile = new File(getRealPathFromURI(context, data.getData()));        }        //设置保存路径名称        cropImgFile = new File(context.getExternalFilesDir(fileName), String.valueOf(System.currentTimeMillis()));        WindowManager manager = ((Activity) context).getWindowManager();        DisplayMetrics outMetrics = new DisplayMetrics();        manager.getDefaultDisplay().getMetrics(outMetrics);        Intent it = new Intent("com.android.camera.action.CROP");        it.setDataAndType(getImageContentUri(context, inputFile), "image/*");        it.putExtra("output", Uri.fromFile(cropImgFile));        it.putExtra("crop", "true");        it .putExtra("scale",true);//黑边        it .putExtra("scaleUpIfNeeded",true);//黑边        if (isSetHd) {            // 裁剪框比例            it.putExtra("aspectX", 1);            it.putExtra("aspectY", 1);            // 输出图片大小            it.putExtra("outputX", outMetrics.widthPixels / 2);            it.putExtra("outputY", outMetrics.widthPixels / 2);        } else {            // 裁剪框比例            it.putExtra("aspectX", 3);            it.putExtra("aspectY", 2);            // 输出图片大小            it.putExtra("outputX", 600);            it.putExtra("outputY", 400);        }        // 返回格式        it.putExtra("outputFormat", "JPEG");        ((Activity) context).startActivityForResult(it, CROP_IMG);//        startActivityForResult(it, CROP_IMG);    }    public String getRealPathFromURI(Context context, Uri uri) {        String mImgPath;        String[] filePathColumn = {MediaStore.Images.Media.DATA};        Cursor cursor = context.getContentResolver().query(uri, filePathColumn, null, null, null);        if(cursor!=null){            cursor.moveToFirst();            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);            String picturePath = cursor.getString(columnIndex);            cursor.close();            mImgPath=picturePath;        }else{            mImgPath=uri.getPath();        }        return mImgPath;    }    public Uri getImageContentUri(Context context, File imageFile) {        String filePath = imageFile.getAbsolutePath();        Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new String[]{"_id"}, "_data=? ", new String[]{filePath}, (String) null);        if (cursor != null && cursor.moveToFirst()) {            int values1 = cursor.getInt(cursor.getColumnIndex("_id"));            Uri baseUri = Uri.parse("content://media/external/images/media");            return Uri.withAppendedPath(baseUri, "" + values1);        } else if (imageFile.exists()) {            ContentValues values = new ContentValues();            values.put("_data", filePath);            return context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);        } else {            return null;        }    }    public void refreshAlbum(Context context, String path) {        context.sendBroadcast(new Intent("android.intent.action.MEDIA_SCANNER_SCAN_FILE", Uri.parse("file://" + path)));    }    public static byte[] bitmap2Bytes(Bitmap bm) {        ByteArrayOutputStream baos = new ByteArrayOutputStream();        bm.compress(Bitmap.CompressFormat.PNG, 100, baos);        return baos.toByteArray();    }    /**     * 根据byte数组生成文件     *     * @param bytes 生成文件用到的byte数组     */    public static boolean createFileWithByte(byte[] bytes) {        String fileName = "portrait.png";        // TODO Auto-generated method stub        /**         * 创建File对象，其中包含文件所在的目录以及文件的命名         *         */        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {//判断SDCard进行操作            //获取SDCard指定目录下            String sdCardDir = Environment.getExternalStorageDirectory() + "/CropImage/";            File dirFile = new File(sdCardDir);//目录转换成文件夹            if (!dirFile.exists()) {//如果不存在，就建立这个文件夹                dirFile.mkdir();            }            File file = new File(sdCardDir, fileName);            // 创建FileOutputStream对象            FileOutputStream outputStream = null;            // 创建BufferedOutputStream对象            BufferedOutputStream bufferedOutputStream = null;            try {                // 如果文件存在则删除                if (file.exists()) {                    file.delete();                }                // 在文件系统中根据路径创建一个新的空文件                file.createNewFile();                // 获取FileOutputStream对象                outputStream = new FileOutputStream(file);                // 获取BufferedOutputStream对象                bufferedOutputStream = new BufferedOutputStream(outputStream);                // 往文件所在的缓冲输出流中写byte数据                bufferedOutputStream.write(bytes);                // 刷出缓冲输出流，该步很关键，要是不执行flush()方法，那么文件的内容是空的。                bufferedOutputStream.flush();            } catch (Exception e) {                // 打印异常信息                e.printStackTrace();            } finally {                // 关闭创建的流对象                if (outputStream != null) {                    try {                        outputStream.close();                    } catch (IOException e) {                        e.printStackTrace();                    }                }                if (bufferedOutputStream != null) {                    try {                        bufferedOutputStream.close();                    } catch (Exception e2) {                        e2.printStackTrace();                    }                }            }            return true;        }        return false;    }    /**     * 获取文件路径并转换成Bitmap     *     * @param filepath     * @return     */    public static Bitmap getFilePath(String filepath) {        File file = new File(filepath);        Bitmap bm = null;        if (file.exists()) {            bm = BitmapFactory.decodeFile(filepath);        }        return bm;    }    public static Bitmap Bytes2Bitmap(byte[] bytes) {        if (bytes.length != 0) {            return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);        } else {            return null;        }    }    public static Bitmap toRoundCorner(Bitmap bitmap, float ratio) {//把正方形图片转化为圆形，ratio为2        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),                bitmap.getHeight(), Bitmap.Config.ARGB_8888);        Canvas canvas = new Canvas(output);        final Paint paint = new Paint();        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());        final RectF rectF = new RectF(rect);        paint.setAntiAlias(true);        canvas.drawARGB(0, 0, 0, 0);        canvas.drawRoundRect(rectF, bitmap.getWidth() / ratio,                bitmap.getHeight() / ratio, paint);        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));        canvas.drawBitmap(bitmap, rect, rect, paint);        return output;    }    public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {        int w = bitmap.getWidth();        int h = bitmap.getHeight();        Matrix matrix = new Matrix();        float scaleWidth = ((float) width / w);        float scaleHeight = ((float) height / h);        matrix.postScale(scaleWidth, scaleHeight);        Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);        return newbmp;    }    public static String savePhotoToSDCard(Bitmap bitmap) {        String photoName = "";        if (checkSDCardAvailable()) {            // 图片时间命名            SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");            Date date = new Date(System.currentTimeMillis());            photoName = format.format(date);            // 存储至DCIM文件夹下            File dir = new File(Environment                    .getExternalStorageDirectory() + "/Stw/temp/save/");            if (!dir.exists()) {                dir.mkdirs();            }            File photoFile = new File(dir.getAbsolutePath(), photoName + ".png");            Bitmap photoBitmap = bitmap;//            FileOutputStream fileOutputStream = null;//            try {//                fileOutputStream = new FileOutputStream(photoFile);            if (photoBitmap != null) {//                    double maxSize = 400.00;                // 将bitmap放至数组中，意在bitmap的大小（与实际读取的原文件要大）                ByteArrayOutputStream baos = new ByteArrayOutputStream();                photoBitmap.compress(Bitmap.CompressFormat.JPEG, 80, baos);                int options = 80;//先压缩到80%                while (baos.toByteArray().length / 1024 > 200) { // 循环判断如果压缩后图片是否大于200kb,大于继续压缩                    if (options <= 0) {//有的图片过大，可能当options小于或者等于0时，它的大小还是大于目标大小，于是就会发生异常，异常的原因是options超过规定值。所以此处需要判断一下                        break;                    }                    baos.reset();// 重置baos即清空baos                    options -= 10;// 每次都减少10                    bitmap.compress(Bitmap.CompressFormat.JPEG, options, baos);                }//                    byte[] b = baos.toByteArray();//                    // 将字节换成KB//                    double mid = b.length / 1024;//                    // 判断bitmap占用空间是否大于允许空间 如果大于则压小于则不压缩//                    if (mid > maxSize) {//                        // 获取bitmap大小 是允许最大大小的多少//                        double i = mid / maxSize;//                        // 压缩 此处用到平方将宽带和高度压缩掉对应的平方根//                        // 保持刻度和高度和原bitmap比率，压缩后也达到了大小占用空间的大小）//                        photoBitmap = zoomImage(photoBitmap,//                                photoBitmap.getWidth() / Math.sqrt(i),//                                photoBitmap.getHeight() / Math.sqrt(i));//                    }//                    if (photoBitmap.compress(Bitmap.CompressFormat.PNG, 100,//                            fileOutputStream)) {//                        fileOutputStream.flush();//                        // fileOutputStream.close();//                    }                try {                    FileOutputStream fos = new FileOutputStream(photoFile);                    fos.write(baos.toByteArray());                    fos.close();                    baos.close();                    return photoFile.getAbsolutePath();                } catch (Exception e) {                }            }//            } catch (FileNotFoundException e) {//                photoFile.delete();//                e.printStackTrace();//            } catch (IOException e) {//                photoFile.delete();//                e.printStackTrace();//            } finally {//                try {//                    if (fileOutputStream != null) {//                        fileOutputStream.close();//                    }//                } catch (IOException e) {//                    e.printStackTrace();//                }//            }        }        return null;    }    /**     * 压缩图片     */    public static Bitmap zoomImage(Bitmap bgimage, double newWidth,                                   double newHeight) {        // 获取这个图片的宽和高        float width = bgimage.getWidth();        float height = bgimage.getHeight();        // 创建操作图片用的matrix对象        Matrix matrix = new Matrix();        // 计算宽高缩放�?        float scaleWidth = ((float) newWidth) / width;        float scaleHeight = ((float) newHeight) / height;        // 缩放图片动作        matrix.postScale(scaleWidth, scaleHeight);        Bitmap bitmap = Bitmap.createBitmap(bgimage, 0, 0, (int) width,                (int) height, matrix, true);        return bitmap;    }    //检查sd卡是否存在    public static boolean checkSDCardAvailable() {        return Environment.getExternalStorageState().equals(                Environment.MEDIA_MOUNTED);    }}