Example usage for android.content.res AssetManager open

Introduction

In this page you can find the example usage for android.content.res AssetManager open.

Prototype

public @NonNull InputStream open(@NonNull String fileName) throws IOException

Source Link

Document

Open an asset using ACCESS_STREAMING mode.

Usage

From source file:Main.java

/**
 * Loads a file into string/* w  w w.  ja va2 s  .  com*/
 */
public static String readFile(String fileName, AssetManager assetManager) throws IOException {
    InputStream input;
    input = assetManager.open(fileName);
    int size = input.available();
    byte[] buffer = new byte[size];
    input.read(buffer);
    input.close();
    return new String(buffer);
}

From source file:Main.java

/**
 * @param filePath example("text/text_1.txt")
 *//*from w w  w . j  a  va  2  s.c  o  m*/
public static InputStreamReader getAssetsText(Context context, String filePath) {
    InputStreamReader reader = null;
    AssetManager assetManager = context.getAssets();
    try {
        InputStream inputStream = assetManager.open(filePath);
        reader = new InputStreamReader(inputStream, "utf-8");
    } catch (IOException e) {
        e.printStackTrace();
    }
    return reader;
}

From source file:Main.java

/**
 * Load an image from an asset file./*  w  w w. j av a  2s  . c  o  m*/
 *
 * @param assetManager
 * @param imageAssetPath Path to image
 * @return image object
 * @throws IOException
 */
public static Bitmap loadBitmapAsset(AssetManager assetManager, String imageAssetPath) throws IOException {
    return BitmapFactory.decodeStream(assetManager.open(imageAssetPath));
}

From source file:Main.java

/**
 * @param filePath example("pictures/picture_1.jpg")
 *///from  w  ww .  j a v  a 2 s  .c o m
public static Bitmap getAssetsPicture(Context context, String filePath) {
    Bitmap bitmap = null;
    AssetManager assetManager = context.getAssets();
    try {
        InputStream inputStream = assetManager.open(filePath);
        bitmap = BitmapFactory.decodeStream(inputStream);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return bitmap;
}

From source file:Main.java

public static String copyAsset(Context context, String assetName, File dir) {
    try {//from  ww w  .j a  v a 2 s. c o m
        if (!dir.exists()) {
            dir.mkdirs();
        }
        File outFile = new File(dir, assetName);
        if (!outFile.exists()) {
            AssetManager assetManager = context.getAssets();
            InputStream in = assetManager.open(assetName);
            OutputStream out = new FileOutputStream(outFile);
            copyFile(in, out);
            in.close();
            out.close();
        }
        return outFile.getAbsolutePath();
    } catch (Exception e) {

    }
    return "";
}

From source file:Main.java

private static boolean copyFile(File assetFile, File storageFile, AssetManager assetManager) {
    try {/*from   w w  w  .  ja  va2 s  .c  o m*/
        InputStream in = assetManager.open(assetFile.getPath());
        FileOutputStream out = new FileOutputStream(storageFile);
        byte[] buffer = new byte[1024];
        int read;
        while ((read = in.read(buffer)) != -1) {
            out.write(buffer, 0, read);
        }
        in.close();
        out.close();
        return true;
    } catch (FileNotFoundException e) {
        return false;
    } catch (IOException e) {
        return false;
    }
}

From source file:Main.java

public static Map<String, List<String>> createDictionary(Context context) {
    try {/*  w  w  w .  j  a va  2  s.co m*/
        AssetManager am = context.getAssets();
        InputStream is = am.open(DICTIONARY_FILENAME);
        Scanner reader = new Scanner(is);
        Map<String, List<String>> map = new HashMap<String, List<String>>();

        while (reader.hasNextLine()) {
            String word = reader.nextLine();
            char[] keyArr = word.toCharArray();
            Arrays.sort(keyArr);
            String key = String.copyValueOf(keyArr);

            List<String> wordList = map.get(key);
            if (wordList == null) {
                wordList = new LinkedList<String>();
            }
            wordList.add(word);
            map.put(key, wordList);
        }
        reader.close();
        return map;
    } catch (Exception e) {
        System.out.println(e.getMessage());
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

/**
 * @param context/*from w ww.  ja  v  a2 s  . com*/
 * @param filePath file path relative to assets, like request_init1/search_index.json
 * @return
 */
public static String readAssert(Context context, String filePath) {
    try {
        if (filePath.startsWith(File.separator)) {
            filePath = filePath.substring(File.separator.length());
        }
        AssetManager assetManager = context.getAssets();
        InputStream inputStream = assetManager.open(filePath);
        DataInputStream stream = new DataInputStream(inputStream);
        int length = stream.available();
        byte[] buffer = new byte[length];
        stream.readFully(buffer);
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        byteArrayOutputStream.write(buffer);
        stream.close();
        return byteArrayOutputStream.toString();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

/**
 * Read a text file from assets/*w  w  w .ja  v a  2  s  .c  o  m*/
 * 
 * @param context
 * @param fileName
 * @return
 */
public static String read(Context context, String fileName) {
    try {
        AssetManager am = context.getAssets();
        InputStream in = am.open(fileName);
        // String pckg = context.getPackageName();
        // ContentResolver cr = context.getContentResolver();
        // Uri uri = Uri.parse("android.resource://"+pckg+"/"+fileName);
        // InputStream in = cr.openInputStream(uri);
        String txt = read(new InputStreamReader(in));
        return txt;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

public static Bitmap getImageFromAssetsFile(Context context, String fileName) {
    Bitmap image = null;//from w w  w. j av a2 s . co  m
    AssetManager am = context.getAssets();
    InputStream is = null;
    try {
        is = am.open(fileName);
        image = BitmapFactory.decodeStream(is);
        return image;
    } catch (IOException e) {
        e.printStackTrace();
        return image;
    } finally {
        if (is != null) {
            try {
                is.close();
                is = null;
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}