Reading resource files from native code

help writing short stories If you’re working with android-ndk and you want to open an asset included in your apk package, you should make a request via jni to the Resource manager in your java code. go here Something like:

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public int[] openAsset( String path )
{
   AssetFileDescriptor ad = null;
   try
   {
      ad = getResources().getAssets().openFd( path );
      Integer off = (int) ad.getStartOffset();
      Integer len = (int) ad.getLength();
      int res[] = { off, len };
      ad.close();
      return res;
   } catch( IOException e ) {
      Log.e( TAG, e.toString() );
   }
   return null;
}

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http://kostkedawung.com/physical-education-phd-thesis/ physical education phd thesis However this is not a optimal solution expecially when you have tons of file io operations, also because I prefer to limit the amount of calls between java and C++.
A better solution I’m using is to open the current apk application using the libzip library. Just download the library and compile as static library, then include it in your Android.mk make file under the http://newlinkgroup.com/should-we-do-homework/ should we do homework LOCAL_STATIC_LIBRARIES section.
What you have to do first is to send the current application filename from java, once at startup, in this way:

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PackageInfo info = null;
try {
   info = getContext().getPackageManager().getPackageInfo("com.example.text", 0);
} catch( NameNotFoundException e ) {
   Log.e( TAG, e.toString() );
   return;
}
setAppName( info.applicationInfo.sourceDir );

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purchasing term papers and in the C++ code you will have the corresponding http://churchofthelordjesus.com/homework-creative-writing/ homework creative writing setAppName method:

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#include <zip .h>
#include <zipint .h>
#include <jni .h>

char packageName[1024] = {0};
zip   *pkg_zip;

JNIEXPORT void JNICALL Java_com_example_test_MySurfaceView_setAppName( JNIEnv * env, jobject obj, jstring pkgname )
{
   const char *buffer = env->GetStringUTFChars( pkgname, false );

   int error;
   pkg_zip = zip_open( buffer, 0, &error );
   strcpy( packageName, buffer );
   if( pkg_zip == NULL ){
      LOGE("Failed to open apk: %i", error );
   }
   env->ReleaseStringUTFChars( pkgname, buffer );
}

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best online essay writer Now you have a reference to the zip package. In this way now you can query the zip package asking if a particular file exists:

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bool FileExists(const char* fname)
{
   if( pkg_zip != NULL )
   {
      int result = zip_name_locate( pkg_zip, fname, 0);
      return result != -1;
   }
   return false;
}

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abortion research paper examples And open any of the files included in your apk package:

follow

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FILE *FileOpen( const char* fname )
{
   zip_file *zfile = zip_fopen( pkg_zip, fname, 0 );
   uint32_t offset = 0;
   uint32_t length = 0;

   if( zfile != NULL )
   {
      offset = zfile->fpos;
      length = zfile->bytes_left;
      zip_fclose( zfile );
      zfile = NULL;
   } else
   {
      return NULL;
   }

   FILE *fp = NULL;
   fp = fopen( packageName, "rb" );
   fseek( fp, offset, SEEK_SET );
   return fp;
}

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http://www.oop.it/?essay-web-maker Using this method you will have a FILE pointer to the whole apk file so you have to take care of the http://csharpbuddy.com/custom-essay-term-paper/ custom essay term paper offset and comment faire un plan de dissertation en philosophie length field when reading and seeking the file itself.

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FZip and Transform Tool

source link This post is just for pointing out a couple of very interesting tools for the college essay expert Flash9 I recently discovered.

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  1. communication dissertation FZip: a little ActionScript3 class (Claus Wahlers and Max Herkender) which enable you to extract files from .zip files.
    Read the original post here
    Download and documentation are here: http://codeazur.com.br/lab/fzip/
  2. http://www.programista.zstrybnik.pl/?american-dream-research-paper american dream research paper Transform Tool: a class (by About Trevor ) which allow to make every kind of transformations on flash display objects.
    See it here