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

/**
 * Gets binary from uri.//from  w  w  w. j a va  2  s  . co  m
 *
 * @param context context
 * @param uri     uri
 * @return byte[] or null on error
 */
public static byte[] getContentData(final Context context, final String uri) {
    if (uri == null) {
        return null;
    }
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    InputStream in = null;
    byte[] buf = new byte[BUF_SIZE];
    int len;
    try {
        ContentResolver r = context.getContentResolver();
        in = r.openInputStream(Uri.parse(uri));
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        return out.toByteArray();
    } catch (IOException e) {
        return null;
    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

---

From source file:Main.java

public static InputStream createWallpaperInputStream(Context context, String preferenceValue)
        throws FileNotFoundException {
    File file = new File(preferenceValue);
    if (file.exists()) {
        return new FileInputStream(file);
    }//from  w w  w . jav a  2  s  .co  m

    Uri uri = Uri.parse(preferenceValue);
    ContentResolver contentResolver = context.getContentResolver();
    try {
        return contentResolver.openInputStream(uri);
    } catch (SecurityException e) {
        Log.i("ThemingUtils", "unable to open background image", e);
        FileNotFoundException fileNotFoundException = new FileNotFoundException(e.getMessage());
        fileNotFoundException.initCause(e);
        throw fileNotFoundException;
    }
}

---

From source file:Main.java

/**
 * Convert an image to a byte array//from w  ww  .ja  va 2s .  co  m
 * @param uri
 * @param context
 * @return
 */
public static byte[] convertImageToByte(Uri uri, Context context) {
    byte[] data = null;
    try {
        ContentResolver cr = context.getContentResolver();
        InputStream inputStream = cr.openInputStream(uri);
        Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
        data = baos.toByteArray();
        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (Exception e2) {
            }
        }
        if (baos != null) {
            try {
                baos.close();
            } catch (Exception e2) {
            }
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return data;
}

---

From source file:Main.java

public static Drawable changeLocalAvatar(Context context, Uri uri) {
    ContentResolver cr = context.getContentResolver();
    Bitmap bitmap = null;//from w ww  . j ava 2 s. c  om
    try {
        bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri));
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return new BitmapDrawable(bitmap);
}

---

From source file:Main.java

public static Bitmap decodeUriAsBitmap(Context context, Uri uri, BitmapFactory.Options options) {

    Bitmap result = null;//from  www.  ja v a  2  s .c  o m

    if (uri != null) {
        ContentResolver cr = context.getContentResolver();
        InputStream inputStream = null;
        try {
            inputStream = cr.openInputStream(uri);
            result = BitmapFactory.decodeStream(inputStream, null, options);
            inputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    return result;
}

---

From source file:Main.java

public static void decodeSize(ContentResolver contentResolver, Uri uri, Point out) throws IOException {
    Options opts = new Options();
    opts.inJustDecodeBounds = true;/*w w w  . j a  va  2 s.  c  om*/

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

    out.set(opts.outWidth, opts.outHeight);
}

---

From source file:Main.java

public static InputStream getISFromURI(Context context, Uri contentURI) {
    ContentResolver res = context.getContentResolver();
    Uri uri = Uri.parse(contentURI.toString());
    InputStream is = null;/*from   w  w  w. j  a v a2s.  c o m*/
    try {
        is = res.openInputStream(uri);
    } catch (FileNotFoundException e) {
        jlog(e);
    }

    return is;
}

---

From source file:Main.java

/**
 * Read bytes.//from  w  ww.  j a  v a2s  . c  om
 *
 * @param uri      the uri
 * @param resolver the resolver
 * @return the byte[]
 * @throws java.io.IOException Signals that an I/O exception has occurred.
 */
private static byte[] readBytes(Uri uri, ContentResolver resolver) throws IOException {
    // this dynamically extends to take the bytes you read
    InputStream inputStream = resolver.openInputStream(uri);
    ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();

    // 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);
    }

    // and then we can return your byte array.
    return byteBuffer.toByteArray();
}

---

From source file:Main.java

/**
 * Decode downloaded big picture.// w ww .  ja v a 2 s. c  om
 * @param context any application context.
 * @param downloadId downloaded picture identifier.
 * @return decoded bitmap if successful, null on error.
 */
public static Bitmap getBigPicture(Context context, long downloadId) {
    /* Decode bitmap */
    InputStream stream = null;
    try {
        /*
         * Query download manager to get file. FIXME For an unknown reason, using the file descriptor
         * fails after APK build with ProGuard, we use stream instead.
         */
        DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
        Uri uri = downloadManager.getUriForDownloadedFile(downloadId);
        ContentResolver contentResolver = context.getContentResolver();
        stream = contentResolver.openInputStream(uri);

        /*
         * Bitmaps larger than 2048 in any dimension are likely to cause OutOfMemoryError in the
         * NotificationManager or even here. Plus some devices simply don't accept such images: the
         * notification manager can drop the notification without any way to check that via API. To
         * avoid the problem, sub sample the image in an efficient way (not using Bitmap matrix
         * scaling after decoding the bitmap with original size: it could run out of memory when
         * decoding the full image). FIXME There is center cropping applied by the NotificationManager
         * on the bitmap we provide, we can't avoid it, see
         * https://code.google.com/p/android/issues/detail?id=58318.
         */
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        options.inSampleSize = 1;
        options.inPreferQualityOverSpeed = true;

        /* Decode dimensions */
        BitmapFactory.decodeStream(stream, null, options);
        int maxDim = Math.max(options.outWidth, options.outHeight);

        /* Compute sub sample size (it must be a power of 2) */
        while (maxDim > 2048) {
            options.inSampleSize <<= 1;
            maxDim >>= 1;
        }

        /* Decode actual bitmap */
        options.inJustDecodeBounds = false;
        stream.close();
        stream = contentResolver.openInputStream(uri);
        return BitmapFactory.decodeStream(stream, null, options);
    } catch (Throwable t) {
        /* Abort, causes are likely FileNotFoundException or OutOfMemoryError */
        return null;
    } finally {
        /* Silently close stream */
        if (stream != null)
            try {
                stream.close();
            } catch (IOException e) {
            }
    }
}

---

From source file:com.richtodd.android.repository.JSONUtility.java

public static JSONObject loadJSONObject(ContentResolver contentResolver, Uri uri) throws RepositoryException {
    try {/*from  w  w w  .  jav a2s .  c  o m*/
        InputStream in = contentResolver.openInputStream(uri);
        try {
            return loadJSONObject(in);
        } finally {
            in.close();
        }
    } catch (FileNotFoundException ex) {
        throw new RepositoryException(ex);
    } catch (IOException ex) {
        throw new RepositoryException(ex);
    }
}

---

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