Caching Of HTTP Requests (HttpResponseCache)
Jan 14, 2014
I'm trying to employ HttpResponseCache to cache each HTTP-request sent with HttpURLConnection.
why I get hit count always zero?
Code:
HttpResponseCache.getInstalled().getHitCount()
Usage:
Code:
for(int i = 0; i < 2; i++){
try {
HttpURLConnection connection = (HttpURLConnection) new URL("http://www.google.com").openConnection();
connection.setUseCaches(true);
if(i == 1){
try {
[code]....
On 2'nd run I have "NOT cached" in console and hit count == 0.
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Jan 13, 2010
Is there a limit on the number of simultaneous http requests of the form:
HttpResponse response = client.execute(request);
I'm interested in any official limit as well as practical ones.
(In a previous life, you had to dig deep to discover that WinMo only allowed three WebRequests to be open at a time.)
Let's say I have a list of 20 files to download on a background thread.
Should I: Download them one at a time, blocking the thread (but not the UI thread) to wait for each one? Start 20 threads each downloading one of the files?
I expect the answer may be somewhere in between, where I create C threads and work on the queue of N files, where C is a number like 3 or 4.
I suspect some of you here have already done some experimentation and know the magic number. In addition, I suspect there may be more efficient ways of doing what I'm doing than creating a new DefaultHttpClient for each request.
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Feb 23, 2010
Im using a web service, so I want to use an async thread for the HTTP authentication request and another thread later to make additional service requests while my main thread runs.Would like to see a good example of how to do this and how to show busy messages somehow in main app. How does the main app know when the thread finished? And what if my thread encounters exceptions, how do I deal with that?HTTP requests are sent later, use the same cookies setup up by the first auth request, so will the later requests pick up the same cookies and just work?
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Aug 29, 2010
I saw an message "page could not be loaded" in an app that I was using which made me realize that it's UI may be HTTP based somehow. Is there a way that I can find out where it is sending its requests?
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Jul 22, 2009
How to trace the HTTP requests/responses e.g. by using Wireshark? I am using soap web services i want tocheck wheather the soap request from the web service sis going properly.I neee the Xml response from the server but non xml format i am getting how to check this request and response using Wireahark or any other process.
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Jul 20, 2012
I developed a game for Android called Jumping Bird, it writes the score obtained by the player in the database on my web server, but it does so synchronized. While it tries to write data in the database on the web, the entire game is stopped , and worse, when the server is slow, the request takes more than 5 or 10 seconds, an ANR(application not respond) error occurs and the OS tries to close the app.
I wonder how I can make that request asynchronous.There is any library that does it?
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Jan 27, 2010
I have an app making an https post on one thread while performing a file download on another thread. For some odd reason, I am getting a ClientProtocolException saying that "The server failed to respond with a valid HTTP response". The error goes away if everything is run on a separate thread. Oddly if I run the two server requests in serial, the error goes away. It seems there's a bug that happens when two requests are made at the same time.
Important note: The post occurs to a different server than the download so the servers themselves should not be causing the problem. The code is simple. Here's the file download code:.............
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Aug 2, 2010
I have an application that is performing HTTP Requests (specifically calling the FogBugz API) when the user clicks certain buttons. Right now, I am just creating a service when the application starts, and then calling different methods in that service to complete requests. However, when I do this, there is the usual hang in the UI thread. I have looked at AsyncTask, but am not sure it will do what I want to accomplish. Because I need to instantly parse the XML that the HTTP Request returns, I need to have a process that is able to return this data to the UI thread. Will ASyncTask be able to accomplish this, or is there some other way.
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Mar 17, 2009
Is there an easy way to inject a header into all HTTP request sent from the emulator, including HTTP requests made by my app and also by the built-in web browser? I need this ability to model the behavior of a carrier gateway. I tried running the emulator through Fiddler as a proxy because I know how to manipulate HTTP requests in Fiddler, but that that didn't work. The emulator was successfully able to make the first HTTP request, but choked on subsequent ones. Reading this list, it seems that getting the emulator to use a proxy is not is not that easy. If this is the only way to do what I need, then I'll certainly give it another shot and post details about any problems I encounter. I am just wondering if perhaps there is an easier way to inject a header.
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May 19, 2010
I am developing a microblogging platform in which I need to populate the page with Post (user defined class with fields) obtained from the Django server using HttpGet.In the client side(Android) I am using GSON to parse the responses from server to the type Post. So I require that server should send Post's one by one so as to add each of them to a list of Posts after parsing and then finally notifying the list adapter of changes in the data set after all Post's have been added.But the problem coming when intially loading the application, the page has to be populated with 10 latest Post's from the server. So I thought of a rather dirty way of sending 10 httpget requests to the server one after the other to the server. The code looks like this.I was thinking of executing it 10 times in a loop to get the 10 Post's I require. But in Django as far I know (correct me if I am wrong) there's no way to keep an index of the last sent Post to the client and so no way to send the 'next' Post on the next HttpGet request. So I am out of ideas.I feel there's a better way to do this efficiently.
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Apr 24, 2009
I've got a activity showing the user a list of songs to play, and when he opens a song I launch an activity which embed a player.
My problem is that when i finish playing i call "this.finish()", but when the user reopen the player, the "onCreate" is launched and it seems that the GUI is building itself "again".
I've tried to not call "this.finish()" and call the Activity.startActivity on the father, but with this way, when I clic on the "back" button on the emulator, I get all the players playing in the same time (they still exist).
So my question, is there a way to make an activity "a singleton" or to freeze it to be retrieved later (It can't be able to retrieve it with "back" button) or a way to cache all the constructions so to not have to do it again ?
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Nov 5, 2010
My app makes several calls to getFromLocationName from the android.location.Geocoder; class, this is currently handled in my activity which also displays some data depedant on the results of that call.
This can be quite slow, for example before the activity can load it first has to complete the various calls, and that is reliant on a network connection.
Once I have the results, I don't really need to refresh that (I mean how often do locations and geo coordinates change?)
My question : How can I best avoid having to query for this data each time my app runs. Should I do something with a service that loads them all on startup? (could be quite slow if it has to query 50+ times). OR should I make the call, store results in SQL, then only query next time if I don't currently hold the results?
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Feb 2, 2009
I am performing hundreds of calls to a single content provider to perform various insertions, updates and deletions. After profiling my application, I have noticed that the ContentResolver class takes approx. 30ms to retrieve the corresponding content provider object for each call. Is there anyway to retrieve a reference to the content provider rather then going through the ContentResolver every time?
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Apr 27, 2010
I am retrieving a list of images and text from a web service.The images are getting displayed in the list view. But the problem is, when i scroll down the list the entire images are getting loaded once again. When i scroll twice or thrice there is a OutofMemory occuring.Can anyone tell me how to cache the images and also to avoid the loading of the images that are already loaded when i scroll down. I have tried to increase inSampleSize but it didnt work.
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Apr 19, 2010
That is the only thing I can think of. When I generate a random number (for the radius of a ball), after a while, the radius goes to one number and sticks that way. I've even tried setting the random number value to 0 before getting the random number, and java.util.Random must be at fault, it still gives the same random number. Here is an apk if you would like to try it yourself: http://74.118.194.50:84/Balls.apk
Here is a snippet of the code (I would rather not release the full source): <code> Random randomizer = new Random(System.currentTimeMillis()); int hw; hw = randomizer.nextInt(95-15+1)+15; </code>
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Nov 24, 2008
I don't currently have a data plan. Since I'm on WiFi 95% of the time, I don't plan on getting one. The only thing I haven't been able to do easily (without a data plan) is use Google Maps while driving/walking.If I load the maps before leaving a WiFi hotspot, my location is tracked and I can pan around the map. Of course, as soon as I want to view another uncached portion of the map, I can't.Maps are small, and it would be perfect if I could cache maps for a certain area - say everything within 100 mi of my house. Any ideas?
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Jul 25, 2010
I really like the new Google Navigation, and it would be really handy for when I go abroad cycling, apart from the roaming charges. Any apps that can cashe the maps and store them, or must I always be connected?
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May 6, 2010
I am trying to cache my viewgroup to a bitmap and blit this to screen instead of calling dispatchDraw on the group while scrolling for performance reasons. This works quite well on 1.5, but has ugly scaling artefacts on 1.6 and newer for high density screens. Because of my 1.5 compatibility I can't find a way to set the density of my cached bitmap.
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Nov 9, 2010
Opera Mobile 10.1 Beta Brings Turbo-Powered Browsing to Android.This is supposedly different than what's in the market.This forum is stale lately, so let's mix it up.I still like XScope, but Firefox is promising, and though I have NEVER been a fan of Opera, I am gonna try it.The one touch pinch zoom on Xscope is really tough to give up
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Sep 16, 2009
Is it possible to view what requests are made to external sites/ servers by an app? Basically I'd kind of like to throw an application (I did not make) into a debugging type thing to see what requests (to where and what data) it makes. This is to kind of ensure a third party app does what it is saying, and isn't sending data elsewhere.
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Apr 12, 2010
How to collect URLs of all http/https requests made by the phone as well as well as the return status code and user agent from the headers. This information should be coming for all browser requests and other applications too.Please let me know this information can be retrieved on App level or we have to go to system level for this.
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Sep 3, 2013
I have a Google Nexus phone on Verizon and it has recently begun waking up on it's own with no apparent reason. It keeps doing this and kills the battery within an hour or so. It only seems to do this when running on battery. It does not happen while charging.
I wanted to know if there is a way to monitor what process/application is waking the phone up.
I have uninstalled the two apps that I remember installing since the problem began and I'd rather not go through having to uninstall every app to figure out what is causing it!
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Jul 22, 2010
I'm testing out a web page on the Android 2.0 and 2.2 emulators, and the jQuery.ajax() requests that the app makes have slightly different behaviors regarding HTTP Authentication Headers. The server I'm making requests to requires basic authentication, and the ajax requests in 2.2 send the proper auth header. In 2.0, I am debugging with Fiddler, and it seems that the requests do not include the auth header, and the server rejects the request with a 401.2 error. I don't think it matters, but the server is running IIS 7. One interesting thing I noticed while debugging the web requests is that Android 2.2 makes two requests for each resource, whether or not it's an XHR. One does not contain the Auth header, and the second one does. In 2.0, it seems to make 2 requests for everything but XHR's:
Here is the 2.2 header for the first XHR:
GET http://192.168.1.111/sonar/mobileweb/sonar/views/week/init.ejs HTTP/1.1
Host: 192.168.1.111
Accept-Encoding: gzip
Referer: http://192.168.1.111/sonar/mobileweb/sonar/sonar.html
Accept-Language: en-US
User-Agent: Mozilla/5.0 (Linux; U; Android 2.2; en-us; sdk Build/FRF91) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1
Accept: text/plain, */*
X-Requested-With: XMLHttpRequest
Accept-Charset: utf-8, iso-8859-1, utf-16, *;q=0.7
The 2.2 header for the second XHR:
GET http://192.168.1.111/sonar/mobileweb/sonar/views/week/init.ejs HTTP/1.1
Host: 192.168.1.111
Accept-Encoding: gzip
Referer: http://192.168.1.111/sonar/mobileweb/sonar/sonar.html
Accept-Language: en-US
User-Agent: Mozilla/5.0 (Linux; U; Android 2.2; en-us; sdk Build/FRF91) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1
Authorization: Basic cGFyaXZlZGFcZGF2aWQubW9ycmlzOjIzbkx2ZWxsbGw=
Accept: text/plain, */*
X-Requested-With: XMLHttpRequest
Accept-Charset: utf-8, iso-8859-1, utf-16, *;q=0.7
And the 2.0 header:
GET http://192.168.1.111/app/views/week/init.ejs HTTP/1.1
Host: 192.168.1.111
Accept-Encoding: gzip
Referer: http://192.168.1.111/app/app.html
Accept-Language: en-US
User-Agent: Mozilla/5.0 (Linux; U; Android 2.0; en-us; sdk Build/ECLAIR) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17
Accept: text/plain, */*
X-Requested-With: XMLHttpRequest
Accept-Charset: utf-8, iso-8859-1, utf-16, *;q=0.7
Has anyone experienced this behavior before? It is basically causing my app to not work at all in version 2.0. Version 2.1 seems to act the same as 2.0.
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Jun 2, 2010
I'm trying to load https requests with a Webkit object but It shows only a blank page, with http requests I don't have problems, It shows the page correctly. I have look the source code of the browser, in http://android.git.kernel.org/?p=platform/packages/apps/Browser.git;a... but I don't understand how the browser process the https requests. I think that the class BrowserActivity process the http and https requests but I don't see how to do it. Somebody could explain how the browser process the https request? It uses a Webview object to show the response of the https requests?
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Nov 7, 2010
The behavior of XMLHttpRequests in Android is very odd when doing cross domain requests. The browser should either fail with an error and not perform the request, or it should follow CORS (http:// www.w3.org/TR/access-control/) and start with an OPTIONS request to the remote domain. The Android browser (2.1 and 2.2) instead performs the request, which is received by the remote server (and this is the dangerous part both for data leaking and remote attacks), but the response is not set in the javascript (status of 0 and responseText null)
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Sep 27, 2011
I am trying to send requests to a server in JSON format but my app die on the emulator when i try to send request. However the same code works fine as a normal java application.
Here is my code:
Code:
private HttpResponse doRequest(String url,JSONObject jso){
HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost(url);
HttpResponse response = null;
[Code]...
What wrong with this code if it run perfectly in a java application?
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Aug 19, 2010
I wrote an android application to request a scan for available WiFi signals around, using the WifiManager, then dump the results to a file. The program works fine, but this weird bug occurs. Initially I was requesting a scan every 30 seconds, and everything worked fine. I then tried to request a scan every two seconds, I get this strange bug. Everything will work fine for a few minutes, then the time between two scan requests jumps from 2 seconds to 50 seconds for no reason.
Then, for four more scans, it will scan at 2-second intervals, then skip to a 50-second interval, and it continues to do this consistently. With larger time intervals this bug does not appear. Has anyone experienced this bug before? Is there a way to prevent it? Or does Android automatically cancel scan requests if they are too frequent?
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Jul 29, 2010
Im looking for the concept of creating Java Server to handle Client requests and respond to it , i want to use Google App engine which does not allow Socket connections , so is the client & server in this case will communicate using Http requests? i'll be glad if someone could clarify the logic to me and provide a few lines of code.
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Oct 19, 2010
I am posting this thread to see what people would like to have as boot animations. I probably won't have time to make all of them, but I plan on trying to make a few of the top requests.
Also, if you have boot animations you have made, or links to someone else's boot animations that you like and think others would like here, please post those links! No sense in going through all that trouble for one that's already made!
*Important!*
When posting links to boot animations, PLEASE specify whether it is an animation that doesn't work with the Fascinate and you'd like us to try and make it work, OR if it has been CONFIRMED to work specifically with the Fascinate, just so people know.
I will be posting links to some more of my favorites soon, but for now, this is my current favorite. I did not make it, and when I find out who did, they are going to get a big, fat thank you from me! It's awesome, and battery friendly to boot. (no pun intended)
Fascinate Boot Animation Links (confirmed to work):
Windows 7 Boot Animation
Spinning Droid (thanks to Saps for link and Natems from MyDroidWorld for creating it)
Fascinate Shutdown Animation Links(confirmed to work):
Reverse Android Scribble Shutdown (thanks to Saps for reversing, testing it, and the link)
Links to more links:
Bootanimation.zip links on XDA (thanks jamesnmandy)
Please post the quickest link possible to the actual "bootanimation.zip" file, or whatever they've named it, and if possible, please credit the producer for his/her work. Keep in mind that some links might point to download files that require membership/registration in order to allow you to download it.
Click HERE for some of the basics on creating your own boot animation using primarily photo editing software.
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Jun 18, 2010
I am rooted with Fresh's.03 rom and for some reason I havent been able to receive any QIK video chat requests. I am just getting a forwarded text message with a link that says someone is trying to call me.
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