Extract the icon from an APK file

ApkService.java

import net.dongliu.apk.parser.ApkParser;
import net.dongliu.apk.parser.bean.Icon;
import org.apache.log4j.Logger;

import java.io.*;

/** Services for managing APK (Adroid Application Package) objects. */
public class ApkService
{
  /** The {@link Logger}. */
  private static final Logger LOGGER = Logger.getLogger(ApkService.class);
    
  /**
   * Extract the icon from an APK file.
   *
   * @param apkParser the {@link ApkParser}
   *
   * @return the icon temp {@link File}
   */
  public File saveIcon(ApkParser apkParser)
  {
    OutputStream out  = null;
    File         file = null;
    try
    {
      final Icon iconFile  = apkParser.getIconFile();
      String     iconPath  = iconFile.getPath();
      String     extension = iconPath.substring(iconPath.lastIndexOf('.'));
      file = File.createTempFile("icon", extension);
      out = new FileOutputStream(file);
      out.write(iconFile.getData());
      out.flush();
    }
    catch (Exception e)
    {
      throw new IllegalStateException("Problem extracting icon", e);
    }
    finally
    {
      if (out != null)
      {
        try
        {
          out.close();
        }
        catch (IOException e)
        {
          LOGGER.error(e);
        }
      }
    }

    return file;
  }
}