Endianness issues in Java

Java is big endian. C endianness depends on CPU. In iphone simulator on x86 based Mac, C is little endian. Jave has problem loading a binary file saved by an iphone app run in iphone simulator. When saving the binary file to be opened by a Java program, each variable needs to reverse the byte order.

Android: cannot load files larger than 1MB

Android cannot load files larger than 1MB under assets or res/raw.

This is a known issue:
http://stackoverflow.com/questions/2860157/load-files-bigger-than-1m-from-assets-folder

The workaround is to rename the file as .png so that android won't zip it.

Android problem with ArrayList of String

I was trying to read a text file to an ArrayList of String. The code is like this:

public class SymptomCategory {

 private ArrayList<String> mCategory;

 public SymptomCategory (InputStream is) {

 

  String str="";

  StringBuffer buf = new StringBuffer();   

  BufferedReader reader = new BufferedReader(new InputStreamReader(is));

  if (is!=null) {       

   try {

    while ((str = reader.readLine()) != null) { 

     System.out.println(str);

     mCategory.add(new String(str));

     buf.append(str + "\n" );

    }

   } catch (IOException e) {

    // TODO Auto-generated catch block

    e.printStackTrace();

   }    

  }  

 }

 public ArrayList<String> getCategory() {

  return mCategory;

 }




}

The problem was that I can only read the first line of the file.

I fixed the problem by adding the following at the beginning of the constructor:

  mCategory = new ArrayList<String>();

Android problem: cannot find text file under assets

I put symp.txt under assets and use the following code to load it:

    AssetManager am = context.getAssets();

    InputStream is;

try {

    is = am.open("symp.txt");

    mCategory = new SymptomCategory(is);

} catch (IOException e) {

    e.printStackTrace();

}

However I got exception when opening the file.

The problem was fixed by cleaning up the project and let it auto recompile.