its already a week that i search for the way to make webview works with proxy (not using wifi, just mobile ddata). i didnt found any solution yet. can someone give me something to work with it?
i already try all there's that in the SO (maybe not all, if someone have a way please share it)
take a peek at my code
public class WebViewActivity extends Activity {
static WebView web;
String PROXY_IP = "202.58.124.34";
int PROXY_PORT = 8989;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.web_view);
web = (WebView) findViewById(R.id.webView1);
web.setWebViewClient(new MyWebViewClient("username","password"));
web.getSettings().setJavaScriptEnabled(true);
web.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
web.getSettings().setAllowContentAccess(true);
web.getSettings().setAppCacheEnabled(true);
System.getProperties().put("proxySet", "true");
System.getProperties().put(PROXY_IP, "202.58.124.34");
System.getProperties().put(PROXY_PORT, "8989");
Authenticator authenticator = new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return (new PasswordAuthentication
("username","password".toCharArray()));
}
};
Authenticator.setDefault(authenticator);
web.setHttpAuthUsernamePassword("http://202.58.124.34", "", "username", "password");
web.loadUrl("URL");
}
public static boolean setProxyICSPlus(WebView webview, String host, int port, String exclusionList) {
Log.d("", "Setting proxy with >= 4.1 API.");
try
{
Class jwcjb = Class.forName("android.webkit.JWebCoreJavaBridge");
Class params[] = new Class[1];
params[0] = Class.forName("android.net.ProxyProperties");
Method updateProxyInstance = jwcjb.getDeclaredMethod("updateProxy", params);
Class wv = Class.forName("android.webkit.WebView");
Field mWebViewCoreField = wv.getDeclaredField("mWebViewCore");
Object mWebViewCoreFieldIntance = getFieldValueSafely(mWebViewCoreField, web);
Class wvc = Class.forName("android.webkit.WebViewCore");
Field mBrowserFrameField = wvc.getDeclaredField("mBrowserFrame");
Object mBrowserFrame = getFieldValueSafely(mBrowserFrameField, mWebViewCoreFieldIntance);
Class bf = Class.forName("android.webkit.BrowserFrame");
Field sJavaBridgeField = bf.getDeclaredField("sJavaBridge");
Object sJavaBridge = getFieldValueSafely(sJavaBridgeField, mBrowserFrame);
Class ppclass = Class.forName("android.net.ProxyProperties");
Class pparams[] = new Class[3];
pparams[0] = String.class;
pparams[1] = int.class;
pparams[2] = String.class;
Constructor ppcont = ppclass.getConstructor(pparams);
updateProxyInstance.invoke(sJavaBridge, ppcont.newInstance("202.58.124.34", 8989, null));
} catch (Exception ex) {
Log.e("","Setting proxy with >= 4.1 API failed with error: " + ex.getMessage());
return false;
}
Log.d("", "Setting proxy with >= 4.1 API successful!");
return true;
}
private static Object getFieldValueSafely(Field field, Object classInstance) throws IllegalArgumentException, IllegalAccessException {
boolean oldAccessibleValue = field.isAccessible();
field.setAccessible(true);
Object result = field.get(classInstance);
field.setAccessible(oldAccessibleValue);
return result;
}
public void loadUrl(WebView view, String url, String proxyUserName, String proxyPassword){
UsernamePasswordCredentials creds= new UsernamePasswordCredentials("username", "password");
Header credHeader = BasicScheme.authenticate(creds, "UTF-8", true);
Map<String, String> header = new HashMap<String, String>();
header.put(credHeader.getName(), credHeader.getValue());
view.loadUrl(url, header);
}
i already try using the public boolean ICS, using try and catch method. all isnt't showing any result (or i'm doing it wrong?). So please if someone have a way that's work using proxy in webview to show it the way.
thanks.
Note: i'm running using mobile data. not Wifi. so the setting will be just for mobile data.
Related
I am developing an app and I use Socket.io on it, I initialize the socket in a class that extends Application and looks like this:
public class Inicio extends Application{
private Socket mSocket;
private SharedPreferences spref;
#Override
public void onCreate(){
super.onCreate();
try{
spref = getSharedPreferences("accountData", Context.MODE_PRIVATE);
IO.Options op = new IO.Options();
op.forceNew = true;
op.reconnection = true;
op.query = "tok=" + spref.getString("sessiontoken", "") + "&usr=" + spref.getString("userid", "");
mSocket = IO.socket(Constants.serverAddress, op);
}catch(URISyntaxException e){
throw new RuntimeException(e);
}
}
public Socket getmSocket(){
return mSocket;
}
}
So I can get and use the same socket instance in other parts of my application's code calling the following way:
Inicio appClass = (Inicio) getApplication();
mSocket = appClas.getmSocket();
mSocket.connect();
But there is a small problem that motivated me to post this question, can you see when I call to SharedPreferences in the Application class? I do this because I need to send the session token and user account ID to properly start the socket connection with my server, the problem is:
Imagine that a user opens the app for the first time and does not have an account yet, he will login or register and then the session token and user ID will be saved to SharedPreferences, but when the app started and ran the Application class, SharedPreferences was still empty and did not have the required token and user ID to establish the connection, so the user would have to reopen the app now to be able to use the socket successfully.
So I ask you: What are my alternative options for solving the problem? Is there another structure besides the Application class that I could use to not suffer from this problem? Or is there some way to bypass this problem?
What I'm doing to get around the problem for now is to restart the app programmatically when login occurs but I believe this is looks like a sad joke and not the ideal way to do it.
Thanks, I apologize for this long question of mine, but I'll be grateful for any help.
Separate your soket creation logic like below:
private void createSoket() {
spref = getSharedPreferences("accountData", Context.MODE_PRIVATE);
String sessiontoken = spref.getString("sessiontoken", "");
String userId = spref.getString("userid", "");
if(!(TextUtils.isEmpty(sessiontoken) || TextUtils.isEmpty(userId))) {
try {
IO.Options op = new IO.Options();
op.forceNew = true;
op.reconnection = true;
op.query = "tok=" + sessiontoken + "&usr=" + userId;
mSocket = IO.socket(Constants.serverAddress, op);
} catch (URISyntaxException e) {
throw new RuntimeException(e);
}
}
}
And when required soket check null and create before pass the instance.
public Socket getmSocket(){
if(mSoket == null)
createSoket();
return mSocket;
}
N.B: Without valid settionToken and userId, soket is null
This is complete Application class:
public class Inicio extends Application{
private Socket mSocket;
private SharedPreferences spref;
#Override
public void onCreate(){
super.onCreate();
createSoket();
}
private void createSoket() {
spref = getSharedPreferences("accountData", Context.MODE_PRIVATE);
String sessiontoken = spref.getString("sessiontoken", "");
String userId = spref.getString("userid", "");
if(!(TextUtils.isEmpty(sessiontoken) || TextUtils.isEmpty(userId))) {
try {
IO.Options op = new IO.Options();
op.forceNew = true;
op.reconnection = true;
op.query = "tok=" + sessiontoken + "&usr=" + userId;
mSocket = IO.socket(Constants.serverAddress, op);
} catch (URISyntaxException e) {
throw new RuntimeException(e);
}
}
}
public Socket getmSocket(){
if(mSoket == null)
createSoket();
return mSocket;
}
}
I run a custom WebSocketServlet for Jetty, which sends short text push notifications (for an async mobile and desktop word game) to many platforms (Facebook, Vk.com, Mail.ru, Ok.ru also Firebase and Amazon messaging) using a Jetty HttpClient instance:
public class MyServlet extends WebSocketServlet {
private final SslContextFactory mSslFactory = new SslContextFactory();
private final HttpClient mHttpClient = new HttpClient(mSslFactory);
#Override
public void init() throws ServletException {
super.init();
try {
mHttpClient.start();
} catch (Exception ex) {
throw new ServletException(ex);
}
mFcm = new Fcm(mHttpClient); // Firebase
mAdm = new Adm(mHttpClient); // Amazon
mApns = new Apns(mHttpClient); // Apple
mFacebook = new Facebook(mHttpClient);
mMailru = new Mailru(mHttpClient);
mOk = new Ok(mHttpClient);
mVk = new Vk(mHttpClient);
}
This has worked very good for the past year, but since I have recently upgraded my WAR-file to use Jetty 9.4.14.v20181114 the trouble has begun -
public class Facebook {
private final static String APP_ID = "XXXXX";
private final static String APP_SECRET = "XXXXX";
private final static String MESSAGE_URL = "https://graph.facebook.com/%s/notifications?" +
// the app access token is: "app id | app secret"
"access_token=%s%%7C%s" +
"&template=%s";
private final HttpClient mHttpClient;
public Facebook(HttpClient httpClient) {
mHttpClient = httpClient;
}
private final BufferingResponseListener mMessageListener = new BufferingResponseListener() {
#Override
public void onComplete(Result result) {
if (!result.isSucceeded()) {
LOG.warn("facebook failure: {}", result.getFailure());
return;
}
try {
// THE jsonStr SUDDENLY CONTAINS PREVIOUS CONTENT!
String jsonStr = getContentAsString(StandardCharsets.UTF_8);
LOG.info("facebook success: {}", jsonStr);
} catch (Exception ex) {
LOG.warn("facebook exception: ", ex);
}
}
};
public void postMessage(int uid, String sid, String body) {
String url = String.format(MESSAGE_URL, sid, APP_ID, APP_SECRET, UrlEncoded.encodeString(body));
mHttpClient.POST(url).send(mMessageListener);
}
}
Suddenly the getContentAsString method called for successful HttpClient invocations started to deliver the strings, which were fetched previously - prepended to the the actual result string.
What could it be please, is it some changed BufferingResponseListener behaviour or maybe some non-obvious Java quirk?
BufferingResponseListener was never intended to be reusable across requests.
Just allocate a new BufferingResponseListener for every request/response.
I have an asyncTask in my application as below. I have to fetch data from realm(which is successfully stored in another activity) into this AsyncTask. Below is my AsyncTask code:
public class MakeAsyncRequest extends AsyncTask<Object, String, MakeAsyncRequest.ResponseDataType>{
public Context asyncContext;
private MakeAsyncRequest(Context context){
asyncContext = context;
}
private static final OkHttpClient client = new OkHttpClient();
private static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
private MakeRequest.ResponseHandler handler;
private String method;
private User user;
private Realm realm;
class ResponseDataType
{
InputStream inputStream;
String string;
String cookie;
}
MakeAsyncRequest(MakeRequest.ResponseHandler responseHandler, String type)
{
method = type;
handler = responseHandler;
}
#Override
protected ResponseDataType doInBackground(Object... params) {
try {
Requests requests = new Requests((Context) params[0]);
String url = params[1].toString();
String bodyJson = null;
if(method.equals("PUT") || method.equals("POST")) {
bodyJson = params[2].toString();
}
final Request.Builder builder;
Response response;
RequestBody body;
switch (method) {
case "GET": builder = new Request.Builder().url(url);
break;
case "DOWNLOAD": builder = new Request.Builder().url(url);
break;
case "POST": body = RequestBody.create(JSON, bodyJson);
builder = new Request.Builder()
.url(url)
.post(body)
.addHeader("Cookie", "key=value");
break;
case "PUT": body = RequestBody.create(JSON, bodyJson);
builder = new Request.Builder()
.url(url)
.put(body);
break;
default: builder = new Request.Builder().url(url);
}
builder.addHeader("Accept", "application/json");
realm = RealmController.initialize(this).getRealm();
final RealmResults<User> users = realm.where(User.class).findAllAsync();
user = users.first();
if(user.getCookie() !== null && !user.getCookie().isEmpty()){
builder.addHeader("cookie", "user.getCookie()");
}
response = client.newCall(builder.build()).execute();
ResponseDataType responseDataType = new ResponseDataType();
if(method.equals("DOWNLOAD")) { responseDataType.inputStream = response.body().byteStream(); }
else {
responseDataType.string = response.body().string();
responseDataType.cookie = response.headers().get("set-cookie");
CookieManager cManager = new CookieManager(null, CookiePolicy.ACCEPT_ALL);
cManager.getCookieStore().getCookies();
}
return responseDataType;
} catch (IOException e) {
return null;
}
}
#Override
protected void onPostExecute(ResponseDataType response) {
try {
if (method.equals("DOWNLOAD")) {
handler.onFinishCallback(response.inputStream);
}else {
handler.onFinishCallback(response.string, response.cookie);
CookieManager cManager = new CookieManager(null, CookiePolicy.ACCEPT_ALL);
cManager.getCookieStore().getCookies();
}
}catch (Exception e){
Log.d("hExceptionError", e.toString());
handler.onFinishCallback("{\n" +
" \"error\": \"error\"\n" +
"}","");
}
}
I am received the access error - "Realm access from incorrect thread. Realm objects can only be accessed on the thread they were created." whenever the control tries to execute the Realm results or to get the first object from Realm.
Below is my RealmController which i created to control the realm instance:
public class RealmController {`public static RealmController initialize(Activity activity) {
if (instance == null) {
instance = new RealmController(activity.getApplication());
}
return instance;
}
public static RealmController initialize(MakeAsyncRequest activity) {
if (instance == null) {
instance = new RealmController(activity.);
}
return instance;
}
}`
I have my user model(Realm object) with setters and getters.
The point is - you cannot create and access Realm on different threads, i.e. create Realm instance in Activity and use it in .doInBackground() method. Create and release Realm immediately before and after transaction.
There may be another issue - don't register quer observer on background thread in AsyncTask - it doesn't have Looper initialized - use main thread or HandlerThread.
Release realm after it is no longer needed (you didn't in your code), because Realm has limited number of instances.
You can initiate a Realm instance in the doInBackground method of your AsyncTask like this:
private class MyAsyncTask extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... voids) {
Realm realm = Realm.getDefaultInstance();
// Do your Realm work here
realm.close();
return null;
}
}
It's important to note that you should always open and close a Realm instance in the same thread. In this case, since the AsyncTask is running in a background thread, you can open and close the Realm instance within the doInBackground method.
I know there are some identical questions but I just couldn't figure out what I'm doing wrong.
public class MainActivity extends AppCompatActivity {
...
#Override
protected void onCreate(Bundle savedInstanceState) {
...
new JsonHandler().execute(this, collection, gridArray, customGridAdapter);
...
}
}
So in my main activity I need to query an API which gives back JSON and I have to process that to build my database.
Then in doInBackground() I call getAllCards() which gets the first JSON. Because the JSON includes URLs for more JSON requests, I have a few methods each querying a more detailed JSON.
public final class JsonHandler extends AsyncTask {
private final String urlCards = "https://api.gwentapi.com/v0/cards/";
private final String urlSpecificCard = "https://api.gwentapi.com/v0/cards/:id";
private Context context;
private Collection collection;
private ArrayList<Card> gridArray;
private CustomGridViewAdapter customGridAdapter;
public JsonHandler(Context context, Collection collection, ArrayList<Card> gridArray, CustomGridViewAdapter customGridAdapter){
this.context = context;
this.collection = collection;
this.gridArray = gridArray;
this.customGridAdapter = customGridAdapter;
}
public JsonHandler(){
this.context = null;
this.collection = null;
this.gridArray = null;
this.customGridAdapter = null;
}
private void getAllCards() throws RuntimeException {
JsonObjectRequest arrayRequest = new JsonObjectRequest(Request.Method.GET, urlCards, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
generateCollection(response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError e) {
throw new RuntimeException(e.getMessage());
}
});
Volley.newRequestQueue(context).add(arrayRequest);
}
private void getSpecificCard(final String cardURL) throws RuntimeException {
JsonObjectRequest arrayRequest = new JsonObjectRequest(Request.Method.GET, cardURL, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
processCard(response, collection);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError e) {
throw new RuntimeException(e.getMessage());
}
});
Volley.newRequestQueue(context).add(arrayRequest);
}
private void generateCollection(JSONObject response) throws RuntimeException {
try {
JSONArray array = response.getJSONArray("results");
for(int i = 0; i < array.length();i++){
JSONObject object = array.getJSONObject(i);
String cardURL = object.getString("href");
getSpecificCard(cardURL);
}
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
}
private void processCard(JSONObject response, Collection collection){
try {
String id = response.getString("id");
EnumFaction faction = EnumFaction.valueOf(response.getJSONObject("faction").getString("name").toUpperCase());
EnumType type = null;
EnumRarity rarity = null;
EnumLane lane = null;
EnumLoyalty loyalty = null;
String name = response.getString("name");
String text = response.getString("text");
String imagePath = "https://api.gwentapi.com/media/\" + id + \"_small.png";
URL url = new URL(imagePath);
InputStream inputStream = url.openConnection().getInputStream();
Bitmap image = BitmapFactory.decodeStream(inputStream);
Card card = new Card(id, faction, type, rarity, lane, loyalty, name, text, null, imagePath, 0);
collection.addCard(card);
gridArray.add(card);
customGridAdapter.notifyDataSetChanged();
} catch (Exception e){
throw new RuntimeException(e.getMessage());
}
}
#Override
protected Object doInBackground(Object[] params) {
context = (Context) params[0];
collection = (Collection) params[1];
gridArray = (ArrayList<Card>) params[2];
customGridAdapter = (CustomGridViewAdapter) params[3];
getAllCards();
return null;
}
}
So now on to the problem:
When the programm reaches processCard() when I've gathered enough information, I get a NetworkOnMainThreadException when I create the InputStream.
I've tried so many different methods to get a Bitmap from my URL and different methods to do an asynchronous task - all leading to the same result.
If you could show me how to resolve this issue, I'd be sooo happy.
Edit: Since it got marked as duplicate: I AM USING ASYNCTASK! I have looked at many questions and tried what they did there, it doesn't work!
Not really familiar with how volley works but onResponse but be on the main thread so you need to start a new thread to make that call too
I'm trying to login to a bank website using jsoup but I'm getting a NullPointerException when the line that prints the cookies is removed from the code. I know I should verify if the response is null but the problem is that the program works when I print the cookies.
Here is the code:
private class GetHomeTask extends AsyncTask<Void, Void, BitmapDrawable> {
protected BitmapDrawable doInBackground(Void... nothing) {
try {
Response home = Jsoup.connect(HOME_URL + "LoginKaptcha.jpg")
.userAgent(USER_AGENT)
.validateTLSCertificates(false)
.ignoreContentType(true)
.method(Method.GET)
.execute();
cookies = home.cookies();
//System.out.println(cookies); --> if commented, I get a NullPointerException when parsing the login page as pointed below.
ByteArrayInputStream inputStream = new ByteArrayInputStream(home.bodyAsBytes());
Bitmap bMap = BitmapFactory.decodeStream(inputStream);
return new BitmapDrawable(getApplicationContext().getResources(), bMap);
} catch (IOException e) {
}
return null;
}
#Override
protected void onPostExecute(BitmapDrawable bMap) {
setImage(bMap);
}
}
public void loginAction(View view) {
String[] userDetails = new String[3];
EditText userIdText = (EditText) findViewById(R.id.userIdField);
userDetails[0] = userIdText.getText().toString();
EditText userPasswordText = (EditText) findViewById(R.id.userPasswordField);
userDetails[1] = userPasswordText.getText().toString();
EditText captchaText = (EditText) findViewById(R.id.captchaField);
userDetails[2] = captchaText.getText().toString();
new LoginTask().execute(userDetails);
}
private class LoginTask extends AsyncTask<String[], Void, Response> {
protected Response doInBackground(String[]... userDetails) {
Response login = null;
try {
login = Jsoup.connect(HOME_URL + "login.action")
.data("cardHolder.userId", userDetails[0][0])
.data("cardHolder.userPassword", userDetails[0][1])
.data("captchaResponse1", userDetails[0][2])
.data("instName", instName)
.data("__checkbox_rememberMe", "true")
.userAgent(USER_AGENT)
.cookies(cookies)
.referrer(HOME_URL)
.validateTLSCertificates(false)
.method(Method.POST)
.execute();
} catch (IOException e) {
e.printStackTrace();
}
return login;
}
#Override
protected void onPostExecute(Response login) {
String userName = null;
try {
// --> NullPointerException (login is null) occurs here only when I comment the line that prints the cookies.
userName = login.parse().getElementsByClass("pageTitle").text();
} catch (IOException e) {
e.printStackTrace();
}
String token = login.url().toString().substring(54);
cookies = login.cookies();
Intent intent = new Intent(getApplicationContext(), DisplaySummaryActivity.class);
intent.putExtra(EXTRA_MESSAGE, userName + "&" + token);
startActivity(intent);
}
}
I tried to search the error but nothing is similar to this. Does anyone have an idea of what is the problem?
Thank you.
The problem was with the connection timeout. Jsoup uses 3s as default, so I've changed it to 10s using Jsoup.connect(url).timeout(10*1000).