选取相册是解决部分手机返回路径为空

最新推荐文章于 2018-08-09 14:45:15 发布

原创最新推荐文章于 2018-08-09 14:45:15 发布 · 713 阅读

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#手机

本文介绍了一个安卓应用中处理用户通过相机或相册选取的照片的方法。包括读取照片的旋转角度并将其调整到正确方向，以及从不同来源获取图片的具体实现。

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
        case GO_CAMERA:
            if (resultCode == RESULT_CANCELED) {
                return;
            }

            File picture = null;
            Bitmap bitmap = null;
            Uri uri = null;
            if (data == null) {
                picture = new File(Environment.getExternalStorageDirectory() + File.separator +ImageName);
                uri = Uri.fromFile(picture);
            } else {
                Bundle bundle = data.getExtras();
                if (bundle != null) {
                    Bitmap imagBit = bundle.getParcelable("data");
                    //先判断该当前的片保存的时候是否旋转的角度
                    //获得保存图片的路径
                    String imagPath = getImagPath(mContext, ImageName);
                    bitmap = BitmapUtil.getRotateBitmap(imagPath, imagBit);
                }
            }

            try {
                bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri);
                //上传阿里云验证身份证信息
                    Uri finalUri = uri;
                    //拍照直接上传服务器加水印
                String imageAbsolutePath = URIUtils.getImageAbsolutePath(ConsigneeIdCardInformationActivity.this, finalUri);
                Bitmap smallBitmap = BitmapUtil.getSmallBitmap(imageAbsolutePath, 350, 350);
                Bitmap rotateBitmap = BitmapUtil.getRotateBitmap(imageAbsolutePath, smallBitmap);
                Logger.i("相机的拍照的图片  ",BitmapUtil.bitmaoToString(rotateBitmap) )

            } catch (IOException e) {
                e.printStackTrace();
            }
            break;
        case GO_ALBUM:
            String fileSrc;
            String columnName = null;
            if (null == data){
                return;
            }
            //下边的代码是获取正确的路径
            if ("file".equals(data.getData().getScheme())) {
                // 有些低版本机型返回的Uri模式为file
                fileSrc = data.getData().getPath();
            } else {
                // Uri模型为content
                String[] proj = {MediaStore.Images.Media.DATA};
                Cursor cursor = this.getContentResolver().query(data.getData(), proj,
                        null, null, null);
                cursor.moveToFirst();
                int idx = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                fileSrc = cursor.getString(idx);
                cursor.close();
            }

            Bitmap smallBitmap = BitmapUtil.getSmallBitmap(fileSrc, 350, 350);
            Logger.i("imagePath  "+fileSrc);
            Logger.e("smallBitmap "+smallBitmap);
            Bitmap rotateBitmap = BitmapUtil.getRotateBitmap(fileSrc, smallBitmap);
            //展示图片之前去获取加水印的图片
            Logger.i("选择相册的IDTYE  " + IDtype + "图片名字 " + columnName);
            switchBitmap(rotateBitmap);

            break;
    }
}

/*
* 读取图片的旋转角度并且旋转为正确的角度
* @param path 图片的绝对路径
* @return 当前图片旋转的角度
*/

public static Bitmap getRotateBitmap(String path,Bitmap bitmap){
    int degree=0;
    //从指定库路径下读取图片，平获取起EXIF信息
    try {
        ExifInterface exifInterface=new ExifInterface(path);
        //获取图片的旋转信息
        int attributeInt = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
        switch (attributeInt){
            case ExifInterface.ORIENTATION_ROTATE_90:
                degree=90;
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                degree=180;
                break;
            case ExifInterface.ORIENTATION_ROTATE_270:
                degree=270;
                break;
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

    Matrix matrix = new Matrix();
    matrix.reset();
    matrix.postRotate(degree);
    Bitmap newBm = Bitmap.createBitmap(bitmap, 0,0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
    if (bitmap.isRecycled()) {
        bitmap.recycle();
    }
    return newBm;

}