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POAndroid webview cookie returns null
 

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  1. POAndroid webview cookie returns null
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    <p>I'm trying to simply set and retrieve a cookie inside a webview in android. I have tried numerous cookie manager scripts to try and get this to work. I have JavaScript enabled. </p> <p>When running the application on a Samsung S3 and a Samsung Galaxy Tab 10.1 cookies don't appear to set at all (android 4.1). However, when running the software on a Samsung Galaxy ace, HTC Desire Z and in the android emulators, the cookies are set and read perfectly fine.</p> <p>When working, the webview returns the string as expected, when not working, the output is simply "null"; the cookie has not value/is not set.</p> <p>My specific case also uses sliding Navigation class, which is an extension of Actionbar Sherlock.</p> <p>I'd really appreciate any help, I've been struggling with this for several weeks now. Thank you.</p> <p>HTML:</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;title&gt; &lt;/title&gt; &lt;script&gt; function createCookie(name, value) { var day = (1 * 24 * 60 * 60 * 1000); var date = new Date(); date.setTime(date.getTime() + (20 * 365 * day)); var expires = "; expires=" + date.toGMTString(); document.cookie = name + '=; expires=Thu, 01 Jan 1970 00:00:01 GMT;'; document.cookie = name + "=" + value + expires + "; path=/"; } function readCookie(name) { var nameEQ = name + "="; var ca = document.cookie.split(';'); for(var i=0;i &lt; ca.length;i++) { var c = ca[i]; while (c.charAt(0)==' ') c = c.substring(1,c.length); if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length); } return null; } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;h1 class=""&gt; &lt;script type="text/javascript"&gt; createCookie("test", "If this is working, it returns this string. If this is not working, it returns null."); document.write("test: " + readCookie("test")); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Java Code:</p> <p>public class MainActivity extends SherlockActivity implements ISideNavigationCallback {</p> <pre><code>public static final String EXTRA_TITLE = "com.devspark.sidenavigation.sample.extra.MTGOBJECT"; public static final String EXTRA_RESOURCE_ID = "com.devspark.sidenavigation.sample.extra.RESOURCE_ID"; public static final String EXTRA_MODE = "com.devspark.sidenavigation.sample.extra.MODE"; public static String WebLoaded = "0"; public static String page = "signup.php"; private ImageView icon; private SideNavigationView sideNavigationView; private WebView engine; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); icon = (ImageView) findViewById(android.R.id.icon); sideNavigationView = (SideNavigationView) findViewById(R.id.side_navigation_view); sideNavigationView.setMenuItems(R.menu.side_navigation_menu); sideNavigationView.setMenuClickCallback(this); if (getIntent().hasExtra(EXTRA_TITLE)) { String title = getIntent().getStringExtra(EXTRA_TITLE); int resId = getIntent().getIntExtra(EXTRA_RESOURCE_ID, 0); setTitle(title); icon.setImageResource(resId); sideNavigationView.setMode(getIntent().getIntExtra(EXTRA_MODE, 0) == 0 ? Mode.LEFT : Mode.RIGHT); } //test getSupportActionBar().setDisplayHomeAsUpEnabled(true); String domain = "localhost"; CookieManager cookieManager = CookieManager.getInstance(); cookieManager.setAcceptCookie(true); cookieManager.setCookie(domain, "name=value"); cookieManager.setCookie(domain, "path=/"); cookieManager.setCookie(domain, "HttpOnly"); //enable cookies CookieManager.getInstance().setAcceptCookie(true); //navigates web engine, including on nav click engine = (WebView) findViewById(R.id.web_engine); engine.loadUrl("file:///android_asset/" + page); //enable JavaScript support - disabled by default for some weird reason engine.getSettings().setJavaScriptEnabled(true); engine.setWebViewClient(new WebViewClient()); //disables text selection engine.setOnLongClickListener(new View.OnLongClickListener() { public boolean onLongClick(View v) { return true; } }); } @Override public void onPause() { super.onPause(); engine.getSettings().setJavaScriptEnabled(false); } @Override public void onResume() { super.onResume(); engine.getSettings().setJavaScriptEnabled(true); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: sideNavigationView.toggleMenu(); break; case R.id.mode_left: item.setChecked(true); sideNavigationView.setMode(Mode.LEFT); break; case R.id.mode_right: item.setChecked(true); sideNavigationView.setMode(Mode.RIGHT); break; default: return super.onOptionsItemSelected(item); } return true; } @Override public void onSideNavigationItemClick(int itemId) { switch (itemId) { case R.id.side_navigation_menu_item1: invokeActivity(getString(R.string.title1), R.drawable.ic_android1); page = "index.html"; break; case R.id.side_navigation_menu_item2: invokeActivity(getString(R.string.title2), R.drawable.ic_android2); page = "test.html"; break; case R.id.side_navigation_menu_item3: invokeActivity(getString(R.string.title3), R.drawable.ic_android3); break; case R.id.side_navigation_menu_item4: invokeActivity(getString(R.string.title4), R.drawable.ic_android4); break; case R.id.side_navigation_menu_item5: invokeActivity(getString(R.string.title5), R.drawable.ic_android5); break; default: return; } finish(); } </code></pre>
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    1. CODid you get related errors/warnings in logcat for your running process? You did not specify domain in JS, so it will be resolved to current host which could possibly be `localhost`, or a specific IP-address, and I'm not sure it's always treated safe (same origin). Also I did not understand your manipulations with cookies in Java - should they have some effect on the JavaScript part?
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    2. COI'd assume that you already checked this article: http://blog.winfieldpeterson.com/2013/01/17/cookies-in-hybrid-android-apps/ and this question: http://stackoverflow.com/questions/1652850/android-webview-cookie-problem . Did you try to work them out?. what are the results?
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    3. CORecent Android versions need the expired date set in the cookie value! Otherwise it will not accepted by CookieManager.
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