مشکل در لاگین کاربر در WebView

لاس CookiesHelper رو| بر اساس این لینک به این مقدار تغییر دادم

package com.example.app.projectname.helpers;

import java.util.List;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import android.webkit.CookieManager;
import android.webkit.CookieSyncManager;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import com.example.app.projectname.globals.G;


public class CookiesHelper {

    private WebView           webView;

    private DefaultHttpClient httpClient;

    public static Cookie      cookie = null;


    public CookiesHelper(WebView webView) {

        this.webView = webView;
    }


    public void set() {

        CookieSyncManager.createInstance(webView.getContext());

        CookieManager cookieManager = CookieManager.getInstance();

        //After Login
        List<Cookie> cookies = httpClient.getCookieStore().getCookies(); // Error Line
        for (int i = 0; i < cookies.size(); i++) {
            cookie = cookies.get(i);
        }

        Cookie sessionCookie = cookie;

        if (sessionCookie != null) {
            cookieManager.removeSessionCookie();
            String cookieString = sessionCookie.getName() + "=" + sessionCookie.getValue() + "; domain=" + sessionCookie.getDomain();
            cookieManager.setCookie(G.webConfigs.cookiesDomain, cookieString);
            CookieSyncManager.getInstance().sync();
        }
        webView.getSettings().setBuiltInZoomControls(true);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.setWebViewClient(new WebViewClient());
        webView.loadUrl(G.webConfigs.IndexUrl);


    }
}

خط خطا رو هم مشخص کردم

به اون خط ایراد می گیره

این هم عنوان خطا

07-06 09:32:42.627: E/AndroidRuntime(26437): FATAL EXCEPTION: main

07-06 09:32:42.627: E/AndroidRuntime(26437): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.emaarit.app.nozadam/com.emaarit.app.nozadam.activities.WebViewActivity}: java.lang.NullPointerException

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1970)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1995)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.app.ActivityThread.access$600(ActivityThread.java:128)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1161)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.os.Handler.dispatchMessage(Handler.java:99)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.os.Looper.loop(Looper.java:137)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.app.ActivityThread.main(ActivityThread.java:4514)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at java.lang.reflect.Method.invokeNative(Native Method)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at java.lang.reflect.Method.invoke(Method.java:511)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at dalvik.system.NativeStart.main(Native Method)

07-06 09:32:42.627: E/AndroidRuntime(26437): Caused by: java.lang.NullPointerException

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at com.emaarit.app.nozadam.helpers.CookiesHelper.set(CookiesHelper.java:35)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at com.emaarit.app.nozadam.activities.WebViewActivity.setCommand(WebViewActivity.java:38)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at com.emaarit.app.nozadam.activities.WebViewActivity.onCreate(WebViewActivity.java:29)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.app.Activity.performCreate(Activity.java:4465)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1053)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1934)

07-06 09:32:42.627: E/AndroidRuntime(26437): 	... 11 more

خط خزا رو به این تغییر دادم

List<Cookie> cookies = WebServiceHelper.cookieStore.getCookies();

خطا نمی ده اما لاگین هم نمی کنه

خواستم از این کد هم استفاده کنم که بر اساس این لینک هست

 
public class WebViewTask extends AsyncTask<Void, Void, Boolean> {

    private String        sessionCookie;
    private CookieManager cookieManager;
    private WebView       webView;


    public WebViewTask(WebView webView) {

        this.webView = webView;
    }


    @Override
    protected void onPreExecute() {
        CookieSyncManager.createInstance(webView.getContext());
        cookieManager = CookieManager.getInstance();
        sessionCookie =  PersistentConfig(G.configs.context).getCookieString(); // Problem
        if (sessionCookie != null) {
            /* delete old cookies */
            cookieManager.removeSessionCookie();
        }
        super.onPreExecute();
    }


    @Override
    protected Boolean doInBackground(Void... param) {
        /* this is very important - THIS IS THE HACK */
        SystemClock.sleep(1000);
        return false;
    }


    @Override
    protected void onPostExecute(Boolean result) {
        if (sessionCookie != null) {
            cookieManager.setCookie("yourdomain.com", sessionCookie);
            CookieSyncManager.getInstance().sync();
        }
        WebSettings webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        webSettings.setBuiltInZoomControls(true);
        webView.setWebViewClient(new WebViewClient() {

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                return super.shouldOverrideUrlLoading(view, url);
            }
        });
        webView.loadUrl(G.webConfigs.IndexUrl);
    }
}

اما جایی رو که به عنوان problem کامنت گذاشتم نمی شناسه

اندروید 2.2

برای ساخت md5 در اندروید از کد زیر استفاده نمایید

 public static final String md5(final String s) {
    final String MD5 = "MD5";
    try {
        // Create MD5 Hash
        MessageDigest digest = java.security.MessageDigest
                .getInstance(MD5);
        digest.update(s.getBytes());
        byte messageDigest[] = digest.digest();

        // Create Hex String
        StringBuilder hexString = new StringBuilder();
        for (byte aMessageDigest : messageDigest) {
            String h = Integer.toHexString(0xFF & aMessageDigest);
            while (h.length() < 2)
                h = "0" + h;
            hexString.append(h);
        }
        return hexString.toString();

    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return "";
}

آیا برای کاراکتر های UTF-8 مشکلی پیش نمی آد؟=

این کد رو برای UTF-8 گیر آوردم

    private static String convertToMd5(final String md5) throws UnsupportedEncodingException {
        StringBuffer sb=null;
        try {
            final java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
            final byte[] array = md.digest(md5.getBytes("UTF-8"));
            sb = new StringBuffer();
            for (int i = 0; i < array.length; ++i) {
                sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(1, 3));
            }
            return sb.toString();
        } catch (final java.security.NoSuchAlgorithmException e) {
        }
        return sb.toString();
    }