Java tutorial
//package com.java2s; import android.content.Context; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; public class Main { public static File getRobotCacheFile(Context context, String assetname) throws IOException { File cacheFile = new File(context.getCacheDir(), assetname); try { 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; } }