Example usage for android.content ContentResolver openInputStream

Introduction

In this page you can find the example usage for android.content ContentResolver openInputStream.

Prototype

public final @Nullable InputStream openInputStream(@NonNull Uri uri) throws FileNotFoundException 

Source Link

Document

Open a stream on to the content associated with a content URI.

Usage

From source file:Main.java

public static Bitmap loadSizeLimitedBitmapFromUri(Uri imageUri, ContentResolver contentResolver) {
    try {/*from w w w .  j a  v  a 2  s  . com*/
        // Load the image into InputStream.
        InputStream imageInputStream = contentResolver.openInputStream(imageUri);

        // For saving memory, only decode the image meta and get the side length.
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        Rect outPadding = new Rect();
        BitmapFactory.decodeStream(imageInputStream, outPadding, options);

        // Calculate shrink rate when loading the image into memory.
        int maxSideLength = options.outWidth > options.outHeight ? options.outWidth : options.outHeight;
        options.inSampleSize = 1;
        options.inSampleSize = calculateSampleSize(maxSideLength, IMAGE_MAX_SIDE_LENGTH);
        options.inJustDecodeBounds = false;
        imageInputStream.close();

        // Load the bitmap and resize it to the expected size length
        imageInputStream = contentResolver.openInputStream(imageUri);
        Bitmap bitmap = BitmapFactory.decodeStream(imageInputStream, outPadding, options);
        maxSideLength = bitmap.getWidth() > bitmap.getHeight() ? bitmap.getWidth() : bitmap.getHeight();
        double ratio = IMAGE_MAX_SIDE_LENGTH / (double) maxSideLength;
        if (ratio < 1) {
            bitmap = Bitmap.createScaledBitmap(bitmap, (int) (bitmap.getWidth() * ratio),
                    (int) (bitmap.getHeight() * ratio), false);
        }

        return rotateBitmap(bitmap, getImageRotationAngle(imageUri, contentResolver));
    } catch (Exception e) {
        return null;
    }
}

---

From source file:Main.java

public static Bitmap loadSizeLimitedBitmapFromUri(Uri imageUri, ContentResolver contentResolver) {
    try {//ww  w .ja  va  2  s  . c om
        // Load the image into InputStream.
        InputStream imageInputStream = contentResolver.openInputStream(imageUri);

        // For saving memory, only decode the image meta and get the side length.
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        Rect outPadding = new Rect();
        BitmapFactory.decodeStream(imageInputStream, outPadding, options);

        // Calculate shrink rate when loading the image into memory.
        int maxSideLength = options.outWidth > options.outHeight ? options.outWidth : options.outHeight;
        options.inSampleSize = 1;
        options.inSampleSize = calculateSampleSize(maxSideLength, IMAGE_MAX_SIDE_LENGTH);
        options.inJustDecodeBounds = false;
        if (imageInputStream != null) {
            imageInputStream.close();
        }

        // Load the bitmap and resize it to the expected size length
        imageInputStream = contentResolver.openInputStream(imageUri);
        Bitmap bitmap = BitmapFactory.decodeStream(imageInputStream, outPadding, options);
        maxSideLength = bitmap.getWidth() > bitmap.getHeight() ? bitmap.getWidth() : bitmap.getHeight();
        double ratio = IMAGE_MAX_SIDE_LENGTH / (double) maxSideLength;
        if (ratio < 1) {
            bitmap = Bitmap.createScaledBitmap(bitmap, (int) (bitmap.getWidth() * ratio),
                    (int) (bitmap.getHeight() * ratio), false);
        }

        return rotateBitmap(bitmap, getImageRotationAngle(imageUri, contentResolver));
    } catch (Exception e) {
        return null;
    }
}

---

From source file:Main.java

/**
 * A safer decodeStream method/*from  w  ww .ja v  a  2s.c o  m*/
 * rather than the one of {@link BitmapFactory} which will be easy to get OutOfMemory Exception
 * while loading a big image file.
 * 
 * @param uri
 * @param width
 * @param height
 * @return
 * @throws FileNotFoundException
 */
protected static Bitmap safeDecodeStream(Context context, Uri uri, int width, int height)
        throws FileNotFoundException {
    int scale = 1;
    // Decode image size without loading all data into memory  
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;

    android.content.ContentResolver resolver = context.getContentResolver();
    try {

        BitmapFactory.decodeStream(new BufferedInputStream(resolver.openInputStream(uri), 4 * 1024), null,
                options);
        if (width > 0 || height > 0) {
            options.inJustDecodeBounds = true;
            int w = options.outWidth;
            int h = options.outHeight;
            while (true) {
                if ((width > 0 && w / 2 < width) || (height > 0 && h / 2 < height)) {
                    break;
                }
                w /= 2;
                h /= 2;
                scale *= 2;
            }
        }
        // Decode with inSampleSize option  
        options.inJustDecodeBounds = false;
        options.inSampleSize = scale;
        return BitmapFactory.decodeStream(new BufferedInputStream(resolver.openInputStream(uri), 4 * 1024),
                null, options);
    } catch (Exception e) {
        e.printStackTrace();
    } catch (OutOfMemoryError e) {
        e.printStackTrace();
        System.gc();
    }
    return null;
}

---

From source file:Main.java

/**
 * Read bytes.//from   w ww . j  ava  2s  . c  o  m
 *
 * @param uri      the uri
 * @param resolver the resolver
 * @return the byte[]
 * @throws IOException Signals that an I/O exception has occurred.
 */
private static byte[] readBytes(Uri uri, ContentResolver resolver, boolean thumbnail) throws IOException {
    // this dynamically extends to take the bytes you read
    InputStream inputStream = resolver.openInputStream(uri);
    ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();

    if (!thumbnail) {
        // this is storage overwritten on each iteration with bytes
        int bufferSize = 1024;
        byte[] buffer = new byte[bufferSize];

        // we need to know how may bytes were read to write them to the
        // byteBuffer
        int len = 0;
        while ((len = inputStream.read(buffer)) != -1) {
            byteBuffer.write(buffer, 0, len);
        }
    } else {
        Bitmap imageBitmap = BitmapFactory.decodeStream(inputStream);
        int thumb_width = imageBitmap.getWidth() / 2;
        int thumb_height = imageBitmap.getHeight() / 2;
        if (thumb_width > THUMBNAIL_SIZE) {
            thumb_width = THUMBNAIL_SIZE;
        }
        if (thumb_width == THUMBNAIL_SIZE) {
            thumb_height = ((imageBitmap.getHeight() / 2) * THUMBNAIL_SIZE) / (imageBitmap.getWidth() / 2);
        }
        imageBitmap = Bitmap.createScaledBitmap(imageBitmap, thumb_width, thumb_height, false);
        imageBitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteBuffer);
    }
    // and then we can return your byte array.
    return byteBuffer.toByteArray();
}

---

From source file:Main.java

/**
 * Returns a mutable bitmap from a uri.//ww w .  j a va 2 s. co  m
 *
 * @param uri Uri to the file
 * @return A mutable copy of the decoded {@link android.graphics.Bitmap}; null if failed.
 * @throws java.io.IOException if unable to make it mutable
 */
public static Bitmap decodeUri(final ContentResolver resolver, final Uri uri) throws IOException {
    BitmapFactory.Options opt = new BitmapFactory.Options();
    opt.inJustDecodeBounds = false;
    opt.inMutable = true;
    return BitmapFactory.decodeStream(resolver.openInputStream(uri), null, opt);
}

---

From source file:ee.ria.DigiDoc.util.FileUtils.java

private static File writeUriDataToDirectory(File directory, Uri uri, String filename,
        ContentResolver contentResolver) {
    File destination = new File(directory, filename);
    try {//from   ww w . j  a  v  a  2s.com
        InputStream inputStream = contentResolver.openInputStream(uri);
        return writeToFile(destination, inputStream);
    } catch (Exception e) {
        Timber.e(e, "failed to cache URI data");
        throw new FailedToCacheUriDataException(e);
    }
}

---

From source file:Main.java

public static Bitmap load(ContentResolver contentResolver, Uri uri, int minSideLen, int maxSize) {

    Bitmap result = EMPTY_BITMAP;//from ww w .j  a v a 2 s. c o m
    try {
        Options opts = new Options();
        opts.inJustDecodeBounds = true;

        BitmapFactory.decodeStream(contentResolver.openInputStream(uri), null, opts);

        result = load(contentResolver.openInputStream(uri), computeSampleSize(opts, minSideLen, maxSize));

        if (isMediaUri(uri) && result != null && result != EMPTY_BITMAP) {
            result = rotateMediaImage(contentResolver, uri, result);
        }

    } catch (OutOfMemoryError e) {
        Log.e("LoadImage", e.getMessage(), e);
    } catch (IOException e) {
        Log.e("LoadImage", e.getMessage(), e);
    }
    if (result == null) {
        result = EMPTY_BITMAP;
    }
    return result;
}

---

From source file:org.jared.synodroid.ds.utils.Utils.java

public static Uri moveToStorage(Activity a, Uri uri) {
    ContentResolver cr = a.getContentResolver();
    try {/*  w w w  . j  a  va  2 s . c om*/
        InputStream is = cr.openInputStream(uri);

        File path = Environment.getExternalStorageDirectory();
        path = new File(path, "Android/data/org.jared.synodroid.ds/cache/");
        path.mkdirs();

        String fname = getContentName(cr, uri);
        File file = null;
        if (fname != null) {
            file = new File(path, fname);
        } else {
            file = new File(path, "attachment.att");
        }

        BufferedInputStream bis = new BufferedInputStream(is);

        /*
         * Read bytes to the Buffer until there is nothing more to read(-1).
         */
        ByteArrayBuffer baf = new ByteArrayBuffer(50);
        int current = 0;
        while ((current = bis.read()) != -1) {
            baf.append((byte) current);
        }

        /* Convert the Bytes read to a String. */
        FileOutputStream fos = new FileOutputStream(file);
        fos.write(baf.toByteArray());
        fos.close();

        return uri = Uri.fromFile(file);
    } catch (FileNotFoundException e) {
        // do nothing
    } catch (IOException e) {
        // do nothing
    }

    return null;
}

---

From source file:edu.stanford.mobisocial.dungbeetle.feed.objects.PictureObj.java

public static DbObject from(Context context, Uri imageUri) throws IOException {
    // Query gallery for camera picture via
    // Android ContentResolver interface
    ContentResolver cr = context.getContentResolver();

    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;/*  w w w  .  j  av a  2  s . c  o  m*/
    BitmapFactory.decodeStream(cr.openInputStream(imageUri), null, options);

    int targetSize = 200;
    int xScale = (options.outWidth + targetSize - 1) / targetSize;
    int yScale = (options.outHeight + targetSize - 1) / targetSize;

    int scale = xScale < yScale ? xScale : yScale;
    //uncomment this to get faster power of two scaling
    //for(int i = 0; i < 32; ++i) {
    //   int mushed = scale & ~(1 << i);
    //   if(mushed != 0)
    //      scale = mushed;
    //}

    options.inJustDecodeBounds = false;
    options.inSampleSize = scale;

    Bitmap sourceBitmap = BitmapFactory.decodeStream(cr.openInputStream(imageUri), null, options);

    int width = sourceBitmap.getWidth();
    int height = sourceBitmap.getHeight();
    int cropSize = Math.min(width, height);

    float scaleSize = ((float) targetSize) / cropSize;

    Matrix matrix = new Matrix();
    matrix.postScale(scaleSize, scaleSize);
    float rotation = PhotoTaker.rotationForImage(context, imageUri);
    if (rotation != 0f) {
        matrix.preRotate(rotation);
    }

    Bitmap resizedBitmap = Bitmap.createBitmap(sourceBitmap, 0, 0, width, height, matrix, true);

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    resizedBitmap.compress(Bitmap.CompressFormat.JPEG, 90, baos);
    byte[] data = baos.toByteArray();
    sourceBitmap.recycle();
    sourceBitmap = null;
    resizedBitmap.recycle();
    resizedBitmap = null;
    System.gc(); // TODO: gross.

    JSONObject base = new JSONObject();
    if (ContentCorral.CONTENT_CORRAL_ENABLED) {
        try {
            String type = cr.getType(imageUri);
            if (type == null) {
                type = "image/jpeg";
            }
            base.put(CorralClient.OBJ_LOCAL_URI, imageUri.toString());
            base.put(CorralClient.OBJ_MIME_TYPE, type);
            String localIp = ContentCorral.getLocalIpAddress();
            if (localIp != null) {
                base.put(Contact.ATTR_LAN_IP, localIp);
            }
        } catch (JSONException e) {
            Log.e(TAG, "impossible json error possible!");
        }
    }
    return from(base, data);
}

---

From source file:org.sufficientlysecure.keychain.util.FileHelper.java

public static void copyUriData(Context context, Uri fromUri, Uri toUri) throws IOException {
    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;

    try {/*from w ww .  j a va 2s .  c  om*/
        ContentResolver resolver = context.getContentResolver();
        bis = new BufferedInputStream(resolver.openInputStream(fromUri));
        bos = new BufferedOutputStream(resolver.openOutputStream(toUri));
        byte[] buf = new byte[1024];
        int len;
        while ((len = bis.read(buf)) > 0) {
            bos.write(buf, 0, len);
        }
    } finally {
        try {
            if (bis != null) {
                bis.close();
            }
            if (bos != null) {
                bos.close();
            }
        } catch (IOException e) {
            // ignore, it's just stream closin'
        }
    }
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• »