Copy the asset at the specified current Folder Or File to this app's data directory. - Android App

Android examples for App:Assets File

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Description

Copy the asset at the specified current Folder Or File to this app's data directory.

Demo Code


import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import android.content.Context;
import android.content.res.AssetManager;
import android.util.Log;

public class Main {
  public static void copyAsset(Context context, String currentFolderOrFile,
      String outDir) {/*from  w  w  w  . j a  v a2  s . c  om*/
    AssetManager manager = context.getAssets();
    try {
      String[] contents = manager.list(currentFolderOrFile);
      if (contents == null || contents.length == 0)
        throw new IOException();

      // Make the directory.
      File dir = new File(outDir, currentFolderOrFile);
      dir.mkdirs();

      // Recurse on the contents.
      for (String entry : contents) {
        copyAsset(context, currentFolderOrFile + "/" + entry, outDir);
      }
    } catch (IOException e) {
      copyFileAsset(context, outDir, currentFolderOrFile);
    }
  }

  /**
   * Copy the asset file specified by path to app's data directory. Assumes
   * parent directories have already been created.
   *
   * @param path
   *          Path to asset, relative to app's assets directory.
   */
  private static void copyFileAsset(Context context, String out_dir, String path) {
    File file = new File(out_dir, path);
    try {
      InputStream in = context.getAssets().open(path);
      OutputStream out = new FileOutputStream(file);
      byte[] buffer = new byte[1024 * 256];
      int read = in.read(buffer);
      while (read != -1) {
        out.write(buffer, 0, read);
        read = in.read(buffer);
      }
      out.close();
      in.close();
    } catch (IOException e) {
      Log.e("ERROR", e.toString());
    }
  }
}

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