Example usage for java.io FileOutputStream write

Introduction

In this page you can find the example usage for java.io FileOutputStream write.

Prototype

public void write(byte b[], int off, int len) throws IOException 

Source Link

Document

Writes len bytes from the specified byte array starting at offset off to this file output stream.

Usage

From source file:Main.java

/**
 * Copy the file from the assets to the map tiles directory if it was
 * shipped with the APK.//from  ww w. j  ava2s .c  o  m
 */
public static boolean copyTileAsset(Context context, String filename) {
    if (!hasTileAsset(context, filename)) {
        // file does not exist as asset
        return false;
    }

    // copy file from asset to internal storage
    try {
        InputStream is = context.getAssets().open(TILE_PATH + File.separator + filename);
        File f = getTileFile(context, filename);
        FileOutputStream os = new FileOutputStream(f);

        byte[] buffer = new byte[1024];
        int dataSize;
        while ((dataSize = is.read(buffer)) > 0) {
            os.write(buffer, 0, dataSize);
        }
        os.close();
    } catch (IOException e) {
        return false;
    }

    return true;
}

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From source file:Main.java

private static void copyAssetFolder(AssetManager am, String src, String dest) throws IOException {

    Log.i("Copy ", src);
    InputStream srcIS = null;//from ww  w.  j a va 2 s .  c om
    File destfh;

    // this is the only way we can tell if this is a file or a
    // folder - we have to open the asset, and if the open fails,
    // it's a folder...
    boolean isDir = false;
    try {
        srcIS = am.open(src);
    } catch (FileNotFoundException e) {
        isDir = true;
    }

    // either way, we'll use the dest as a File
    destfh = new File(dest);

    // and now, depending on ..
    if (isDir) {

        // If the directory doesn't yet exist, create it
        if (!destfh.exists()) {
            destfh.mkdir();
        }

        // list the assets in the directory...
        String assets[] = am.list(src);

        // and copy them all using same.
        for (String asset : assets) {
            copyAssetFolder(am, src + "/" + asset, dest + "/" + asset);
        }

    } else {
        int count, buffer_len = 2048;
        byte[] data = new byte[buffer_len];

        // copy the file from the assets subsystem to the filesystem
        FileOutputStream destOS = new FileOutputStream(destfh);

        //copy the file content in bytes
        while ((count = srcIS.read(data, 0, buffer_len)) != -1) {
            destOS.write(data, 0, count);
        }

        // and close the two files
        srcIS.close();
        destOS.close();
    }
}

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From source file:Main.java

public static File getRobotCacheFile(Context context, String assetname) throws IOException {
    File cacheFile = new File(context.getCacheDir(), assetname);
    try {/*from w  w  w. ja v  a 2  s  . c o m*/
        InputStream inputStream = context.getAssets().open(assetname);
        try {
            FileOutputStream outputStream = new FileOutputStream(cacheFile);
            try {
                byte[] buf = new byte[1024];
                int len;
                while ((len = inputStream.read(buf)) > 0) {
                    outputStream.write(buf, 0, len);
                }
            } finally {
                outputStream.close();
            }
        } finally {
            inputStream.close();
        }
    } catch (IOException e) {
        throw new IOException("Could not open " + assetname, e);
    }
    return cacheFile;
}

---

From source file:Main.java

public static void copyFile(File in, File out) throws IOException {
    FileInputStream fis = new FileInputStream(in);
    if (!out.exists()) {
        if (in.isDirectory()) {
            out.mkdirs();/* ww w .ja  v  a  2s . com*/
        } else {
            File parentDir = new File(out.getParent());
            if (!parentDir.exists()) {
                parentDir.mkdirs();
            }
            out.createNewFile();
        }
    }
    FileOutputStream fos = new FileOutputStream(out);
    try {
        byte[] buf = new byte[8192];
        int i = 0;
        while ((i = fis.read(buf)) != -1)
            fos.write(buf, 0, i);
    } catch (IOException e) {
        throw e;
    } finally {
        fis.close();
        fos.close();
    }
}

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From source file:Main.java

public static void copyDB(Context context, String fileName) throws IOException {
    String filePath = context.getFilesDir().getAbsolutePath() + "/" + fileName;
    if (new File(filePath).exists()) {
        return;// w w w. j av  a  2  s .c  o  m
    }
    FileOutputStream fos = new FileOutputStream(new File(filePath));
    InputStream is = context.getResources().getAssets().open(fileName);
    byte[] buffer = new byte[1024 * 500];
    int count = 0;
    while ((count = is.read(buffer)) > 0) {
        fos.write(buffer, 0, count);
    }
    fos.close();
    is.close();
}

---

From source file:Main.java

public static File extractAssetToFile(Context context, String file) {
    File cacheFile = new File(context.getCacheDir(), file);
    try {/*from www. java2  s . com*/
        InputStream inputStream = context.getAssets().open(file);
        try {
            FileOutputStream outputStream = new FileOutputStream(cacheFile);
            try {
                byte[] buf = new byte[1024];
                int len;
                while ((len = inputStream.read(buf)) > 0) {
                    outputStream.write(buf, 0, len);
                }
            } finally {
                outputStream.close();
            }
        } finally {
            inputStream.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
    return cacheFile;
}

---

From source file:Main.java

public static boolean copyFile(String oldPath, String newPath) {
    boolean bRet = false;
    try {/*w ww.ja  va2  s. co  m*/
        int bytesum = 0;
        int byteread = 0;
        File oldfile = new File(oldPath);
        if (oldfile.exists()) {
            InputStream inStream = new FileInputStream(oldPath);
            FileOutputStream fs = new FileOutputStream(newPath);
            byte[] buffer = new byte[1444];
            int length;
            while ((byteread = inStream.read(buffer)) != -1) {
                bytesum += byteread;
                fs.write(buffer, 0, byteread);
            }
            inStream.close();
        }
        bRet = true;
    } catch (Exception e) {
        bRet = false;
    }
    return bRet;

}

---

From source file:Main.java

/**
 * Downloads a file via HTTP(S) GET to the given path. This function cannot be called from the
 * UI thread. Android does not allow it.
 *
 * @param urlString Url to the ressource to download.
 * @param file      file to be written to.
 * @param overwrite if file exists, overwrite?
 * @return flase if download was not successful. If successful, true.
 *//*from  w  w  w  . ja  v  a2 s .c  om*/
private static Boolean fileDownloadHttp(String urlString, File file, Boolean overwrite) {
    HashMap<String, String> result = null;
    URL url = null;
    //        File temp;

    try {
        url = new URL(urlString);

        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod("GET");
        urlConnection.setReadTimeout(200000);
        urlConnection.connect();
        InputStream in = new BufferedInputStream(urlConnection.getInputStream());

        FileOutputStream outputStream = new FileOutputStream(file);

        int read = 0;
        byte[] bytes = new byte[1024];

        while ((read = in.read(bytes)) != -1) {
            outputStream.write(bytes, 0, read);
        }

        in.close();
        outputStream.close();
        urlConnection.disconnect();
    } catch (MalformedURLException e) {
        e.printStackTrace();
        return false;
    } catch (IOException e) {
        e.printStackTrace();
        return false;
    }
    Log.d(TAG, "File download: " + file.getAbsolutePath() + url.getFile() + "overwrite " + overwrite
            + "exists? " + file.exists());
    return true;
}

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From source file:jBittorrentAPI.utils.IOManager.java

/**
 * Save the byte array into a file with the give filename
 * @param data byte[]/*from  w w w  .  j av  a2s  . c  om*/
 * @param filename String
 * @return boolean
 */
public static boolean save(byte[] data, String filename) {
    try {
        FileOutputStream fos = new FileOutputStream(filename);
        fos.write(data, 0, data.length);
        fos.flush();
        fos.close();
        return true;
    } catch (IOException ioe) {
    }
    return false;
}

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From source file:helpers.FileUpload.java

public static boolean processFile(String path, FileItemStream item) {
    try {//from   ww w.  j a v  a  2s.co m

        File f = new File(path + File.separator + "assets" + File.separator + "uploads");
        if (!f.exists()) {
            f.mkdir();
        }
        File savedFile = new File(f.getAbsolutePath() + File.separator + item.getName());
        FileOutputStream fos = new FileOutputStream(savedFile);
        InputStream is = item.openStream();
        int x = 0;
        byte[] b = new byte[1024];
        while ((x = is.read(b)) != -1) {
            fos.write(b, 0, x);
        }
        fos.flush();
        fos.close();
        return true;
    } catch (Exception e) {
        System.out.println("FileUpload 35: " + e.getMessage());
    }
    return false;
}

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