Application.streamingAssetsPath
static var streamingAssetsPath: string;
static string streamingAssetsPath;
static streamingAssetsPath as string
Description

Contains the path to the StreamingAssets folder (Read Only).

If you have a "StreamingAssets" folder in the Assets folder of your project, it will be copied to your player builds and be present in the path given by Application.streamingAssetsPath.

Note that on some platforms it is not possible to directly access the StreamingAssets folder because there is no file system access in the web platforms, and because it is compressed into the .apk file on Android. On those platforms, a url will be returned, which can be used using the WWW class.
	// print the path to the streaming assets folder
	var filePath = System.IO.Path.Combine(Application.streamingAssetsPath, "MyFile");
	var result = "";
	if (filePath.Contains("://"))
	{
		var www = new WWW (filePath);
		yield www;
		result = www.text;
	}
	else
		result = System.IO.File.ReadAllText(filePath);
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public string filePath = System.IO.Path.Combine(Application.streamingAssetsPath, "MyFile");
    public string result = "";
    IEnumerator Example() {
        if (filePath.Contains("://")) {
            WWW www = new WWW(filePath);
            yield return www;
            result = www.text;
        } else
            result = System.IO.File.ReadAllText(filePath);
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public filePath as string = System.IO.Path.Combine(Application.streamingAssetsPath, 'MyFile')

	public result as string = ''

	def Example() as IEnumerator:
		if filePath.Contains('://'):
			www as WWW = WWW(filePath)
			yield www
			result = www.text
		else:
			result = System.IO.File.ReadAllText(filePath)