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    Posted by: Unknown Posted date: 16:35 / comment : 0

    package com.teamtreehouse.ribbit;

    import java.io.ByteArrayOutputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.io.InputStream;

    import org.apache.commons.io.IOUtils;

    import android.content.Context;
    import android.graphics.Bitmap;
    import android.net.Uri;
    import android.util.Log;

    public class FileHelper {
       
        public static final String TAG = FileHelper.class.getSimpleName();
       
        public static final int SHORT_SIDE_TARGET = 1280;
       
        public static byte[] getByteArrayFromFile(Context context, Uri uri) {
            byte[] fileBytes = null;
            InputStream inStream = null;
            ByteArrayOutputStream outStream = null;
           
            if (uri.getScheme().equals("content")) {
                try {
                    inStream = context.getContentResolver().openInputStream(uri);
                    outStream = new ByteArrayOutputStream();
               
                    byte[] bytesFromFile = new byte[1024*1024]; // buffer size (1 MB)
                    int bytesRead = inStream.read(bytesFromFile);
                    while (bytesRead != -1) {
                        outStream.write(bytesFromFile, 0, bytesRead);
                        bytesRead = inStream.read(bytesFromFile);
                    }
               
                    fileBytes = outStream.toByteArray();
                }
                catch (IOException e) {
                    Log.e(TAG, e.getMessage());
                }
                finally {
                    try {
                        inStream.close();
                        outStream.close();
                    }
                    catch (IOException e) { /*( Intentionally blank */ }
                }
            }
            else {
                try {
                    File file = new File(uri.getPath());
                    FileInputStream fileInput = new FileInputStream(file);
                    fileBytes = IOUtils.toByteArray(fileInput);
                }
                catch (IOException e) {
                    Log.e(TAG, e.getMessage());
                }
               }
           
            return fileBytes;
        }
       
        public static byte[] reduceImageForUpload(byte[] imageData) {
            Bitmap bitmap = ImageResizer.resizeImageMaintainAspectRatio(imageData, SHORT_SIDE_TARGET);
           
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, outputStream);
            byte[] reducedData = outputStream.toByteArray();
            try {
                outputStream.close();
            }
            catch (IOException e) {
                // Intentionally blank
            }
           
            return reducedData;
        }

        public static String getFileName(Context context, Uri uri, String fileType) {
            String fileName = "uploaded_file.";
           
            if (fileType.equals(ParseConstants.TYPE_IMAGE)) {
                fileName += "png";
            }
            else {
                // For video, we want to get the actual file extension
                if (uri.getScheme().equals("content")) {
                    // do it using the mime type
                    String mimeType = context.getContentResolver().getType(uri);
                    int slashIndex = mimeType.indexOf("/");
                    String fileExtension = mimeType.substring(slashIndex + 1);
                    fileName += fileExtension;
                }
                else {
                    fileName = uri.getLastPathSegment();
                }
            }
           
            return fileName;
        }
    }

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