Example usage for android.content ContentResolver openAssetFileDescriptor

List of usage examples for android.content ContentResolver openAssetFileDescriptor

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Introduction

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

Prototype

public final @Nullable AssetFileDescriptor openAssetFileDescriptor(@NonNull Uri uri, @NonNull String mode)
        throws FileNotFoundException

Source Link

Document

Open a raw file descriptor to access data under a URI.

Usage

From source file:Main.java

public static Bitmap decodeSampledBitmapFromFile(Resources res, ContentResolver contentResolver, Uri uri,
        int reqWidthInPixel, int reqHeightInPixel) throws IOException {

    Bitmap bitmap;// w w w .j  av  a  2  s  . c  o m
    AssetFileDescriptor fileDescriptor;

    fileDescriptor = contentResolver.openAssetFileDescriptor(uri, "r");

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFileDescriptor(fileDescriptor.getFileDescriptor(), null, options);

    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, reqWidthInPixel, reqHeightInPixel);

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    bitmap = BitmapFactory.decodeFileDescriptor(fileDescriptor.getFileDescriptor(), null, options);
    fileDescriptor.close();
    return bitmap;
}

From source file:Main.java

public static Bitmap decodeSampledBitmapFromFile(Resources res, ContentResolver contentResolver, File file,
        int reqWidthInPixel, int reqHeightInPixel) throws IOException {

    Bitmap bitmap;//w  ww.j  a  va  2  s  .c  om
    AssetFileDescriptor fileDescriptor;

    fileDescriptor = contentResolver.openAssetFileDescriptor(Uri.fromFile(file), "r");

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFileDescriptor(fileDescriptor.getFileDescriptor(), null, options);

    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, reqWidthInPixel, reqHeightInPixel);

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    bitmap = BitmapFactory.decodeFileDescriptor(fileDescriptor.getFileDescriptor(), null, options);
    fileDescriptor.close();
    return bitmap;
}

From source file:Main.java

public static Bitmap decodeSampledBitmapFromFile(Resources res, ContentResolver contentResolver, Uri uri,
        float reqWidthInDip, float reqHeightInDip) throws IOException {

    Bitmap bitmap;/*w  ww .  ja va 2 s.  c o m*/
    AssetFileDescriptor fileDescriptor;
    int reqWidthInPixel = (int) dipToPixels(res, reqWidthInDip);
    int reqHeightInPixel = (int) dipToPixels(res, reqHeightInDip);
    fileDescriptor = contentResolver.openAssetFileDescriptor(uri, "r");

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFileDescriptor(fileDescriptor.getFileDescriptor(), null, options);

    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, reqWidthInPixel, reqHeightInPixel);

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    bitmap = BitmapFactory.decodeFileDescriptor(fileDescriptor.getFileDescriptor(), null, options);
    fileDescriptor.close();
    return bitmap;
}

From source file:Main.java

public static Bitmap decodeSampledBitmapFromFile(Resources res, ContentResolver contentResolver, File file,
        float reqWidthInDip, float reqHeightInDip) throws IOException {

    Bitmap bitmap;/*from ww w  . j a v  a 2 s. com*/
    AssetFileDescriptor fileDescriptor;
    int reqWidthInPixel = (int) dipToPixels(res, reqWidthInDip);
    int reqHeightInPixel = (int) dipToPixels(res, reqHeightInDip);
    fileDescriptor = contentResolver.openAssetFileDescriptor(Uri.fromFile(file), "r");

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFileDescriptor(fileDescriptor.getFileDescriptor(), null, options);

    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, reqWidthInPixel, reqHeightInPixel);

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    bitmap = BitmapFactory.decodeFileDescriptor(fileDescriptor.getFileDescriptor(), null, options);
    fileDescriptor.close();
    return bitmap;
}

From source file:com.xlythe.engine.theme.Theme.java

public static Typeface getFont(Context context, String name) {
    String key = getKey(context) + "_" + name;
    if (TYPEFACE_MAP.containsKey(key)) {
        return TYPEFACE_MAP.get(key);
    }//from  ww  w. j  ava2 s .  c  o m

    String[] extensions = { ".ttf", ".otf" };
    for (String s : extensions) {
        try {
            // Use cursor loader to grab font
            String url = getPackageName() + ".FileProvider/" + name + s;
            Uri uri = Uri.parse("content://" + url);
            ContentResolver cr = context.getContentResolver();
            AssetFileDescriptor a = cr.openAssetFileDescriptor(uri, null);
            FileInputStream in = new FileInputStream(a.getFileDescriptor());
            in.skip(a.getStartOffset());
            File file = new File(context.getCacheDir(), name + s);
            file.createNewFile();
            FileOutputStream fOutput = new FileOutputStream(file);
            byte[] dataBuffer = new byte[1024];
            int readLength = 0;
            while ((readLength = in.read(dataBuffer)) != -1) {
                fOutput.write(dataBuffer, 0, readLength);
            }
            in.close();
            fOutput.close();

            // Try/catch for broken fonts
            Typeface t = Typeface.createFromFile(file);
            TYPEFACE_MAP.put(key, t);
            return TYPEFACE_MAP.get(key);
        } catch (Exception e) {
            // Do nothing here
        }
    }

    TYPEFACE_MAP.put(key, null);
    return TYPEFACE_MAP.get(key);
}

From source file:com.galois.qrstream.MainActivity.java

private byte[] readFileUri(Uri uri) throws IOException {
    ContentResolver contentResolver = getContentResolver();
    AssetFileDescriptor fd = contentResolver.openAssetFileDescriptor(uri, "r");
    long fileLength = fd.getLength();
    Log.d(Constants.APP_TAG, "fd length " + fileLength);
    DataInputStream istream = new DataInputStream(contentResolver.openInputStream(uri));
    byte[] buf = new byte[(int) fileLength];
    istream.readFully(buf);// ww w .j  av  a 2s  . c  o  m
    return buf;
}

From source file:com.wsi.audiodemo.ScrollingActivity.java

private void playSound2(String assetName) {
    try {//from  ww  w  .ja  va 2  s  .  c om
        // Syntax  :  android.resource://[package]/[res type]/[res name]
        // Example : Uri.parse("android.resource://com.my.package/raw/sound1");
        //
        // Syntax  : android.resource://[package]/[resource_id]
        // Example : Uri.parse("android.resource://com.my.package/" + R.raw.sound1);

        String RESOURCE_PATH = ContentResolver.SCHEME_ANDROID_RESOURCE + "://";

        String path;
        if (false) {
            path = RESOURCE_PATH + getPackageName() + "/raw/" + assetName;
        } else {
            int resID = getResources().getIdentifier(assetName, "raw", getPackageName());
            path = RESOURCE_PATH + getPackageName() + File.separator + resID;
        }
        Uri soundUri = Uri.parse(path);
        mSoundName.setText(path);

        mMediaPlayer = new MediaPlayer();
        if (true) {
            mMediaPlayer.setDataSource(getApplicationContext(), soundUri);
            mMediaPlayer.prepare();
        } else if (false) {
            // How to load external audio files.
            // "/sdcard/sample.mp3";
            //  "http://www.bogotobogo.com/Audio/sample.mp3";
            mMediaPlayer.setDataSource(path);
            mMediaPlayer.prepare();
        } else {
            ContentResolver resolver = getContentResolver();
            AssetFileDescriptor afd = resolver.openAssetFileDescriptor(soundUri, "r");
            mMediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
            afd.close();
        }

        mMediaPlayer.start();
    } catch (Exception ex) {
        Toast.makeText(this, ex.getMessage(), Toast.LENGTH_LONG).show();
    }
}

From source file:fr.jbteam.jabboid.core.ContactDetailFragment.java

/**
 * Decodes and returns the contact's thumbnail image.
 * @param contactUri The Uri of the contact containing the image.
 * @param imageSize The desired target width and height of the output image in pixels.
 * @return If a thumbnail image exists for the contact, a Bitmap image, otherwise null.
 *//* ww w  . java2  s .  c  om*/
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private Bitmap loadContactPhoto(Uri contactUri, int imageSize) {

    // Ensures the Fragment is still added to an activity. As this method is called in a
    // background thread, there's the possibility the Fragment is no longer attached and
    // added to an activity. If so, no need to spend resources loading the contact photo.
    if (!isAdded() || getActivity() == null) {
        return null;
    }

    // Instantiates a ContentResolver for retrieving the Uri of the image
    final ContentResolver contentResolver = getActivity().getContentResolver();

    // Instantiates an AssetFileDescriptor. Given a content Uri pointing to an image file, the
    // ContentResolver can return an AssetFileDescriptor for the file.
    AssetFileDescriptor afd = null;

    if (Utils.hasICS()) {
        // On platforms running Android 4.0 (API version 14) and later, a high resolution image
        // is available from Photo.DISPLAY_PHOTO.
        try {
            // Constructs the content Uri for the image
            Uri displayImageUri = Uri.withAppendedPath(contactUri, Photo.DISPLAY_PHOTO);

            // Retrieves an AssetFileDescriptor from the Contacts Provider, using the
            // constructed Uri
            afd = contentResolver.openAssetFileDescriptor(displayImageUri, "r");
            // If the file exists
            if (afd != null) {
                // Reads and decodes the file to a Bitmap and scales it to the desired size
                return ImageLoader.decodeSampledBitmapFromDescriptor(afd.getFileDescriptor(), imageSize,
                        imageSize);
            }
        } catch (FileNotFoundException e) {
            // Catches file not found exceptions
            /*if (BuildConfig.DEBUG) {
            // Log debug message, this is not an error message as this exception is thrown
            // when a contact is legitimately missing a contact photo (which will be quite
            // frequently in a long contacts list).
            Log.d(TAG, "Contact photo not found for contact " + contactUri.toString()
                    + ": " + e.toString());
            }*/
        } finally {
            // Once the decode is complete, this closes the file. You must do this each time
            // you access an AssetFileDescriptor; otherwise, every image load you do will open
            // a new descriptor.
            if (afd != null) {
                try {
                    afd.close();
                } catch (IOException e) {
                    // Closing a file descriptor might cause an IOException if the file is
                    // already closed. Nothing extra is needed to handle this.
                }
            }
        }
    }

    // If the platform version is less than Android 4.0 (API Level 14), use the only available
    // image URI, which points to a normal-sized image.
    try {
        // Constructs the image Uri from the contact Uri and the directory twig from the
        // Contacts.Photo table
        Uri imageUri = Uri.withAppendedPath(contactUri, Photo.CONTENT_DIRECTORY);

        // Retrieves an AssetFileDescriptor from the Contacts Provider, using the constructed
        // Uri
        afd = getActivity().getContentResolver().openAssetFileDescriptor(imageUri, "r");

        // If the file exists
        if (afd != null) {
            // Reads the image from the file, decodes it, and scales it to the available screen
            // area
            return ImageLoader.decodeSampledBitmapFromDescriptor(afd.getFileDescriptor(), imageSize, imageSize);
        }
    } catch (FileNotFoundException e) {
        // Catches file not found exceptions
        /*if (BuildConfig.DEBUG) {
        // Log debug message, this is not an error message as this exception is thrown
        // when a contact is legitimately missing a contact photo (which will be quite
        // frequently in a long contacts list).
        Log.d(TAG, "Contact photo not found for contact " + contactUri.toString()
                + ": " + e.toString());
        }*/
    } finally {
        // Once the decode is complete, this closes the file. You must do this each time you
        // access an AssetFileDescriptor; otherwise, every image load you do will open a new
        // descriptor.
        if (afd != null) {
            try {
                afd.close();
            } catch (IOException e) {
                // Closing a file descriptor might cause an IOException if the file is
                // already closed. Ignore this.
            }
        }
    }

    // If none of the case selectors match, returns null.
    return null;
}

From source file:android.com.example.contactslist.ui.ContactDetailFragment.java

/**
 * Decodes and returns the contact's thumbnail image.
 * @param contactUri The Uri of the contact containing the image.
 * @param imageSize The desired target width and height of the output image in pixels.
 * @return If a thumbnail image exists for the contact, a Bitmap image, otherwise null.
 *///w w  w. j  a v a  2s  . co  m
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private Bitmap loadContactPhoto(Uri contactUri, int imageSize) {

    // Ensures the Fragment is still added to an activity. As this method is called in a
    // background thread, there's the possibility the Fragment is no longer attached and
    // added to an activity. If so, no need to spend resources loading the contact photo.
    if (!isAdded() || getActivity() == null) {
        return null;
    }

    // Instantiates a ContentResolver for retrieving the Uri of the image
    final ContentResolver contentResolver = getActivity().getContentResolver();

    // Instantiates an AssetFileDescriptor. Given a content Uri pointing to an image file, the
    // ContentResolver can return an AssetFileDescriptor for the file.
    AssetFileDescriptor afd = null;

    if (Utils.hasICS()) {
        // On platforms running Android 4.0 (API version 14) and later, a high resolution image
        // is available from Photo.DISPLAY_PHOTO.
        try {
            // Constructs the content Uri for the image
            Uri displayImageUri = Uri.withAppendedPath(contactUri, Photo.DISPLAY_PHOTO);

            // Retrieves an AssetFileDescriptor from the Contacts Provider, using the
            // constructed Uri
            afd = contentResolver.openAssetFileDescriptor(displayImageUri, "r");
            // If the file exists
            if (afd != null) {
                // Reads and decodes the file to a Bitmap and scales it to the desired size
                return ImageLoader.decodeSampledBitmapFromDescriptor(afd.getFileDescriptor(), imageSize,
                        imageSize);
            }
        } catch (FileNotFoundException e) {
            // Catches file not found exceptions
            if (BuildConfig.DEBUG) {
                // Log debug message, this is not an error message as this exception is thrown
                // when a contact is legitimately missing a contact photo (which will be quite
                // frequently in a long contacts list).
                Log.d(TAG,
                        "Contact photo not found for contact " + contactUri.toString() + ": " + e.toString());
            }
        } finally {
            // Once the decode is complete, this closes the file. You must do this each time
            // you access an AssetFileDescriptor; otherwise, every image load you do will open
            // a new descriptor.
            if (afd != null) {
                try {
                    afd.close();
                } catch (IOException e) {
                    // Closing a file descriptor might cause an IOException if the file is
                    // already closed. Nothing extra is needed to handle this.
                }
            }
        }
    }

    // If the platform version is less than Android 4.0 (API Level 14), use the only available
    // image URI, which points to a normal-sized image.
    try {
        // Constructs the image Uri from the contact Uri and the directory twig from the
        // Contacts.Photo table
        Uri imageUri = Uri.withAppendedPath(contactUri, Photo.CONTENT_DIRECTORY);

        // Retrieves an AssetFileDescriptor from the Contacts Provider, using the constructed
        // Uri
        afd = getActivity().getContentResolver().openAssetFileDescriptor(imageUri, "r");

        // If the file exists
        if (afd != null) {
            // Reads the image from the file, decodes it, and scales it to the available screen
            // area
            return ImageLoader.decodeSampledBitmapFromDescriptor(afd.getFileDescriptor(), imageSize, imageSize);
        }
    } catch (FileNotFoundException e) {
        // Catches file not found exceptions
        if (BuildConfig.DEBUG) {
            // Log debug message, this is not an error message as this exception is thrown
            // when a contact is legitimately missing a contact photo (which will be quite
            // frequently in a long contacts list).
            Log.d(TAG, "Contact photo not found for contact " + contactUri.toString() + ": " + e.toString());
        }
    } finally {
        // Once the decode is complete, this closes the file. You must do this each time you
        // access an AssetFileDescriptor; otherwise, every image load you do will open a new
        // descriptor.
        if (afd != null) {
            try {
                afd.close();
            } catch (IOException e) {
                // Closing a file descriptor might cause an IOException if the file is
                // already closed. Ignore this.
            }
        }
    }

    // If none of the case selectors match, returns null.
    return null;
}

From source file:br.com.mybaby.contatos.ContactDetailFragment.java

/**
 * Decodes and returns the contact's thumbnail image.
 * @param contactUri The Uri of the contact containing the image.
 * @param imageSize The desired target width and height of the output image in pixels.
 * @return If a thumbnail image exists for the contact, a Bitmap image, otherwise null.
 *//*from w ww  .  ja v a  2  s .co  m*/
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private Bitmap loadContactPhoto(Uri contactUri, int imageSize) {

    // Ensures the Fragment is still added to an activity. As this method is called in a
    // background thread, there's the possibility the Fragment is no longer attached and
    // added to an activity. If so, no need to spend resources loading the contact photo.
    if (!isAdded() || getActivity() == null) {
        return null;
    }

    // Instantiates a ContentResolver for retrieving the Uri of the image
    final ContentResolver contentResolver = getActivity().getContentResolver();

    // Instantiates an AssetFileDescriptor. Given a content Uri pointing to an image file, the
    // ContentResolver can return an AssetFileDescriptor for the file.
    AssetFileDescriptor afd = null;

    if (Util.hasICS()) {
        // On platforms running Android 4.0 (API version 14) and later, a high resolution image
        // is available from Photo.DISPLAY_PHOTO.
        try {
            // Constructs the content Uri for the image
            Uri displayImageUri = Uri.withAppendedPath(contactUri, Photo.DISPLAY_PHOTO);

            // Retrieves an AssetFileDescriptor from the Contacts Provider, using the
            // constructed Uri
            afd = contentResolver.openAssetFileDescriptor(displayImageUri, "r");
            // If the file exists
            if (afd != null) {
                // Reads and decodes the file to a Bitmap and scales it to the desired size
                return ImageLoader.decodeSampledBitmapFromDescriptor(afd.getFileDescriptor(), imageSize,
                        imageSize);
            }
        } catch (FileNotFoundException e) {
            // Catches file not found exceptions
            if (BuildConfig.DEBUG) {
                // Log debug message, this is not an error message as this exception is thrown
                // when a contact is legitimately missing a contact photo (which will be quite
                // frequently in a long contacts list).
                Log.d(TAG,
                        "Contact photo not found for contact " + contactUri.toString() + ": " + e.toString());
            }
        } finally {
            // Once the decode is complete, this closes the file. You must do this each time
            // you access an AssetFileDescriptor; otherwise, every image load you do will open
            // a new descriptor.
            if (afd != null) {
                try {
                    afd.close();
                } catch (IOException e) {
                    // Closing a file descriptor might cause an IOException if the file is
                    // already closed. Nothing extra is needed to handle this.
                }
            }
        }
    }

    // If the platform version is less than Android 4.0 (API Level 14), use the only available
    // image URI, which points to a normal-sized image.
    try {
        // Constructs the image Uri from the contact Uri and the directory twig from the
        // Contacts.Photo table
        Uri imageUri = Uri.withAppendedPath(contactUri, Photo.CONTENT_DIRECTORY);

        // Retrieves an AssetFileDescriptor from the Contacts Provider, using the constructed
        // Uri
        afd = getActivity().getContentResolver().openAssetFileDescriptor(imageUri, "r");

        // If the file exists
        if (afd != null) {
            // Reads the image from the file, decodes it, and scales it to the available screen
            // area
            return ImageLoader.decodeSampledBitmapFromDescriptor(afd.getFileDescriptor(), imageSize, imageSize);
        }
    } catch (FileNotFoundException e) {
        // Catches file not found exceptions
        if (BuildConfig.DEBUG) {
            // Log debug message, this is not an error message as this exception is thrown
            // when a contact is legitimately missing a contact photo (which will be quite
            // frequently in a long contacts list).
            Log.d(TAG, "Contact photo not found for contact " + contactUri.toString() + ": " + e.toString());
        }
    } finally {
        // Once the decode is complete, this closes the file. You must do this each time you
        // access an AssetFileDescriptor; otherwise, every image load you do will open a new
        // descriptor.
        if (afd != null) {
            try {
                afd.close();
            } catch (IOException e) {
                // Closing a file descriptor might cause an IOException if the file is
                // already closed. Ignore this.
            }
        }
    }

    // If none of the case selectors match, returns null.
    return null;
}