I have a simple java code which gets html text from the input url:
code:................
I am using this code in an android project. Now the problem comes when there is no internet connectivity. The application just halts and later gives error. Is there some way to break this after some fixed timeout, or even return some specific string after an exception is thrown.
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My app doesn't connect through HTC EV0-4G. How app can access network through CDMA 4G.
View 1 Replies View RelatedI have an IntentService which makes some web service calls. Before making these calls I check to make sure the device has network connectivity.
I am doing so like this:
CODE:.............
Unfortunately, when I'm debugging on my Android device, this returns false when I have both a network and a wireless connection.
Some interesting tidbits about connec.getNetworkInfo(0):
CODE:...................
Clearly this code is not sufficient (perhaps it would only return true if I sent some bit over the network and turned the radio on?). Moreover, since I'm not well versed in the ConnectivityManager, I'm assuming I should probably be scanning all networks (ie: getNetworkInfo(0 through N)).
I have a terrible bug in my widget. The widget is waken up using an AlarmManager (the update interval is chosen by users, ranging from 30 mins to 2 hours) to grab some data from the Internet and display it on the widget. I do not hold a wakelock since if the phone sleeps, just let it sleeps. There's no way to update the information since nobody will see it. If I put the phone in the basement (has no wi-fi or cell signal) for about an hour. the phone will definitely not update anything. However, when I get it back from the basement, the cell network could never be recovered again no matter how long I have waited (it just get an X on the cell signal icon on the notification bar) that I must restart the phone. May I know if a partial wake lock must be held on checking network availability?
Find the code skeleton as below:
CODE:.................
I have a Service/AlarmManager set to go off ever hour; as seen at: http://github.com/commonsguy/cw-advandroid/tree/master/SystemServices...
The Alarm triggers a Socket connection to communicate with a Web Server. I'm logging the interaction to a file so I can see it later. When I leave the phone on my desk for a day, it seems that more often than not I get a "Network unreachable" error when trying to do any networking.
I believe it is related to how deeply the phone goes into sleep. Is there a special kind of lock I have to hold, or some command required to prep the wireless radio so that it can be ready to access the Internet?
So I dropped AT&T for the Incredible and my number successfully ported over, but I cannot connect to the Internet.I can make/receive calls and SMS, but no Internet besides wifi.I've been on with vzw support and went through reactivating the phone (*228) and a couple hard reset to no avail.They said it could have something to do with porting from AT&T, but I'm not understanding that connection.I don't have too much faith in support figuring out so I'm trying this forum. Does anyone have a clue how to resolve this or is it a defect with the phone.Some details: there is no 3G symbol near the signal status bars.Settings/Wireless & networks: shows "Mobile Network" with a green check, buts its grayed out so no action can be taken on it.Directly underneath "Mobile Network" it says "Turning on..." and it seems to flash that status every once in a while.
View 5 Replies View RelatedI would like to implement a functionality in my game to give some daily goodies. But user can easily abuse it by changing the date of the device again and again. I know this can be easily implemented through some server. Is there any way to handle it locally without the involvement of server or network connectivity?
View 2 Replies View RelatedMy Epic 4G just lost all connection to the internet about an hour ago. Out of the blue, so to speak. I was browsing, set it down, then when I used it again it wouldn't connect. My browser, facebook, and any other connection required apps throw error messages saying - "connection error", "no connection". I've reset the phone several times, and as far as for the network settings, everything looks set the way it always is. I have done nothing to the network settings/options to have accidentally messed it up myself. I am connected via 3G, and this network problem is new to me. This phone has been nothing but constant problems and this is the newest one in a long list.
View 2 Replies View RelatedI bought my Xperia x10 mini yesterday, and one of the first things I did was to set it up for WiFi in my house (which I already have 2 laptops and a stationary PC connected to). Setting it up was easy and quick, but my phone doesn't find the network, not even if I am standing right beside the router. I have tried to restart the WiFi connection, restart my phone, delete and re-add the home connection, but the phone still doesn't connect to the network.
The network's SSID isn't broadcasted for security reasons, could this be the problem? When I search for networks, it doesn't find any 'unnamed' networks like the windows pcs do. (which is normally the one I need to connect to.) Is there something wrong with my hardware? Or my software (my phone is completely up-to-date)? (Except broadcast the SSID, which is not an option..)
I have been looking at the ConnectivityManager class documented at http://developer.android.com/reference/android/net/ConnectivityManage... .
I would like to know if an Android application can open a network connection (socket) on a specified network interface [on a device supporting multiple network interface types WiFi, Cellular, WiMax etc] ? I am looking for the capability for an application to open a socket on a given type of network for example over WiFi network or over 3G Cellular Data network.
If this is possible in Android, how would I code this requirement within the API Framework ? The ConnectivityManager enables an application to learn about available network connections and currently categorises them as either TYPE_WIFI or TYPE_MOBILE.
There is a member function in the ConnectivityManager class called requestRouteToHost(int,int) [url] which "Ensure that a network route exists to deliver traffic to the specified host via the specified network interface. An attempt to add a route that already exists is ignored, but treated as successful." Sounds like this would install an IP routing table entry to reach a given host via a specified network interface type (WiFi or Mobile). After calling this would it be sufficient for an application to open a socket and connect to the desired destination address ?
Or perhaps the application needs to bind() a socket to a local address of a network interface of the desired type (WiFi or Mobile) Or by setting a socket-level socket option of SO_DONTROUTE ?
i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
I'm trying to call a java method from javascript using addJavascriptInterface(); but seems does not work, it always display "failure"; java code...
View 2 Replies View RelatedMy application has some code which detects if the Android device is connected to a Wi-Fi or Mobile network.
The code appeared to be working fine for Andoid 1.5, but does not seem to work correctly for Andorid 1.6.
Here is the code I am using:
CODE:..........................
Under Android 1.5 this code would correctly detect if the current connectivity was Wi-Fi or Mobile. However under Android 1.6 the call to getActiveNetworkInfo seems to always return a networkInfo instance with the type set to TYPE_MOBILE. This is happening even though the icons in the bar at the top of the android screen show the Wi-Fi connected icon with the full signal strength bars showing.
I don't know if this means that under Android 1.6 it is actually using the phone data network for connectivity instead of the Wi-Fi connectivity when both networks are available, or if the getActiveNetworkInfo call is just returning the wrong information for Android 1.6.
Has anyone else seen this issue with Andoid 1.6? It would be too bad if 1.6 is really using the bandwidth on the phone data network instead of the Wi-Fi network when both networks are present. Does anyone know if there is a different way to correctly detect if the Android device has Wi-Fi connectivity?
Java packages like Java.io, Java.Lang etc used in android, are they different from Java packages in windows ? means specially made for android ?
View 2 Replies View RelatedI am with first Droid phone. I have had an HTC Desire for approximately 1 week and absolutely love it. When I first got the phone, the connectivity was always H in the status bar, with very good I-net speed. For some reason, unbeknown to me, it is now a G, sometimes a 3G. The speed is still quite good though. This 'change' would appear to have been since I received a text from T-Mobile (I'm aware of the 'G' issues on their forums) alongwith the lines. They hoped I liked their new webpage. Now they have reverted to the original webpage I may have to re-load my favorites. I have not had to do this, thankfully. Under Wireless & Networks, WiFi is off, as I am on an 'unlimited' 3GB plan, and I am using GSM/WCDMA auto under Preferred network mode.
Questions: -
1. What is the difference between the three, namely H, 3G and G?
2. Which is quicker?
2. Can I change it back to H, if I wanted, as I believe it was quicker?
4. Sometimes, although not very often, the G, 3G and H disappear altogether and I am left with no connectivity at all. However, if I try to access the I-net, I can, and either the G, 3G or H appear again miraculously. Is there a particular reason for this?
Hope to hear from you experts soon and apologies for such basic questions, as I'm still getting used to using a droid. My last phone was a Nokia N95 2GB. Huge difference!
We are developing an Android application that uses bluetooth to connect to a board that we developed. If we try to connect to the board after the system has been off for a while, the system connects correctly and begins to stream data. The data stream will freeze momentarily, then start, then freeze, then shut off after about 6 - 8 seconds. If we try again it will repeat this process. It is almost like the Android is checking to see if it is an ok device to connect with, and decides no for some reason.
The only way we have been able to then connect again is to un-pair and then re-pair the tablet to the board. After we unpair and re-pair, the connection works well and will continue to work well until we turn the tablet off.
I need to do the same thing i do with connectivity but in my phone, i connect to the web with my wifi and share internet with the same wifi adapter.
i been looking into it for a while and people keep on say that i need 2 widi adapter for it but is SO no true coz i have and use only 1... I don't wanna use bluetooth at all or connect it with usb.
I am currently in China and therefor run a VPN on my PC to connect to the outside world, I would also like to run the same VPN (PPTP) on my android. I can connect via VPN if I am using WiFi but when I try to connect over GPRS/Edge I can't get any connectivity. All web pages load with the standard "web page not available" and apps, eg. the market place, won't connect either. I would have thought that if it was a carrier issue (CMCC) I wouldn't be able to connect to the VPN in the first place. So is this a Android issue, a setup issue or a carrier issue? And can you actuality run a VPN over GPRS om Android?
View 1 Replies View RelatedI am working to send request to internet and get data, my emulator show the 3G sign on it, i have also sent the permission to internet connectivity in my app. But when i click on button to send request it return null. I have checked the request link in chrom it send data successfully.
View 4 Replies View RelatedI'm new to Android development and working on an Android application that requires the phone to be connected to the internet, through either Wifi, EDGE or 3G.
This is the code that I'm using to check whether an internet connection is available
CODE:................
I've also set these permissions in the manifest file.
CODE:.................
This works fine in the emulator running version 1.5 of Android when 3G is enabled, but it crashes when I disable the 3G connection. My application throws a null pointer exception when I call isConnectedOrConnecting(). The same thing also happens on my HTC Desire running Android 2.1.
My chat application connects to a server and information is sent/received by the user. When the connection changes, such as 3g->wifi, wifi->3g, losing a data connection, etc, the socket sometimes stays connected for ages before disconnecting. During this time, it's impossible to tell if the connection is still active, it seems as if messages are being sent just fine. Other times, when sending a message, it will throw an IO error and disconnect.
Apart from implementing code to detect connection changes and reconnecting appropriately, is it possible to have the socket immediately throw an IO exception when connectivity changes?
I'm connecting using the following code:.........
I'm not using setSoTimeout as data may not be transferred for long periods of time depending on the remote server's configuration.
I am trying to check internetconnectivity in android and using following code
CODE:..........
But it gives me network/ wifi connectivity if wifi is connected it gives me true and if internet is not connected then it also gives me true.
I'm wondering if, with the G1, it's possible to force the network traffic to pass through the Wifi or through the Cell GSM network. I need to force an application to connect through the tower network to get some login information. Is this possible? Anyone have any ideas as to how this would be possible? I'm trying to accomplish this inside an app with the Android SDK (Sorry I wasn't more clear about that originally)
View 3 Replies View RelatedAnyone else lost 3G? My phone is fine cause I haven't flashed a ROM in a few days. But I Rooted a friend of mines yesterday and flashed Suave Smush. Everything was fine until he called me this morning and said he had lost 3G. A little later it would not send or receive a text message. Then it kept saying he was out of his home network. We wipped it clean and did the Nand Restore and its fine now. His phone still has Android 1.5.
View 4 Replies View RelatedI switched to my moment from a sidekick. I use Yahoo instant Messenger a lot and on the SK slide it was flawless. Never lagged or dropped connectivity. I have noticed my android native IM app is sluggish at best and since 2.1 the dropped connectivity isn't so much as issue, I was wondering if any of you have found a YIM app that blows the stock out of the water and/or performs as well as the sidekick IM program?
View 2 Replies View RelatedI want to create an Android service, which notifies the main activity whenever disconnects and when internet reconnects again. I have following function for checking internet connectivity:.
CODE:...........
But I want to know, how to use it in a service.
Is it possible to create the connectivity of android with ftp server. i am going to create an application where login information about user is placed on ftp server.
View 1 Replies View RelatedI have a small issue with my remote connectivity to my android, the scenario is simple and my target is to connect to my android remotely through my laptop while the android is connected to my PC in the other room through USB cable, so what I have done already is that am connecting the Android to the PC through a USB cable and the PC to the Laptop through the LAN, now am connecting Remote desktop from my laptop to the PC and on the PC I installed application that can connect to the android so I can totally see the skin of my android and control it, but the final thing I wish to do is to make a phone call, here I connect a Bluetooth to the PC and I connect the Bluetooth as free handset to the android it didn't totally work, you see its interesting scenario and if we work together we can accomplish something really assume
View 1 Replies View RelatedI'm having some problems porting a Java application to work in Android platform. I detected an incompatibility problem between java sun and Adroid sdk in java.lang.Class. I oberved that: public Field[] getFields() Returns an array containing Field objects describing all fields which are defined. That's array is sorted as attributes are declared in the main Class in sun jdk. For example, next Class is defined as: public class Example { public boolean stop; public int atr1; public String name; ....
}
do you know how to get the Home country code, current country code, the Mobile directory number on a cdma network. I see TelephonyManager.getNetworkCountryIso() can get the current country code, but it is not reliable on cdma network.
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