Android : Establishing Two Connection - 3G And Wifi - At The Same Time
Apr 22, 2009
We are doing some research using android handset , G1 and i don not find any clear information in order to manage the connection, as i note all classes allow us for only accessing the information about a connection, i would like to ask if there is really such solution already avaliable in order to opens two connections for two different network ( 3G & Wifi ) at the same time and use them to exchange data "establishing two connection at the same time". i look in the source code of the Mms app to see how it as you recommend but no related information.
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Aug 2, 2010
When i'm connected to my router at home via wifi, the connection randomly drops from time to time. My laptop and TV is fine which are both running via the internet. The setting is set to stay connected always, even when the screen goes black.
Does anyone have a resolution for this? Perhaps static IP? if this is the answer, what should the settings be?
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Mar 30, 2009
I need a Library that opens WiFi connection and 3G connection at the same time and then start transmitting sockets to 2 PC ( servers) connected to the WiFi-3g Networks. I Couldn't find in WiFi.manager & Android.net Lib. any thing that can do that.
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Jan 19, 2014
You can use the 3G network for surfing the Internet and at the same time the wifi network to move files only?
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Sep 7, 2009
If my screen locks while I have a wifi connection, then the connection is lost when I unlock the phone.First, is this perhaps deliberate, to save power? Also, either way, when I unlock the screen and go into wifi settings, I see that the phone is trying to make a wifi connection, but it never succeeds, even though it's my home network and I'm in the same room as the router. It just states 'Obtaining address.
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Sep 15, 2010
Long time reader, first time poster here. How does one know if the Epic is using the wifi connection as opposed to using the 3G connection? When wifi is connected both that and the 3G connection shows at the top. So which one is in control per se? And how can it be verified?
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Aug 26, 2010
I developed a bluetooth client android application on Htc Hero and developed on windows a bluetooth server application. Server application make SDP successfully and i can connect from android application to it, but establishing connection not very easy, sometimes it connects to bluetooth server with one attempt, sometimes after making 4 or 5 attempts and occasionally i lost connection after established a connection. What is reason of that, it is a problem of android or htc hero? Because with J2me application i connect to server easily and connection continue a long time .
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Oct 8, 2010
I decided to try the WiFi hotspot available through 2.2. GREAT! Actually worked quite a bit better than I thought it would. Only trouble is, ... now I'm back at home, it fails to connect to the home network.
+ Restarting phone
+ Re-entering password
+ Forgetting network + refinding
WiFi sees the network, says "Connecting", comes up "Failed to connect", "Scanning" and loops on that sequence. I know the router's working because this laptop is using it right now
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Dec 29, 2009
My Hero takes a long time to connect to my home wifi. I usually go in to the settings and hit "Scan" repeatedly before it connects. Sometimes it fails connect, and I have to go into Settings to try again. Is there a way/app to scan automatically or re-attempt to connect again? Maybe there's something I'm not thinking of?
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Jun 9, 2010
My parents just recently bought their first smartphones. They both have Samsung Moments now and think the phone looks promising, but they've already ran into their first quirk. I searched for a good halfhour to see if I could find an answer to their problem but I couldn't find anything. So without further adieu.their problem. They had older phones that used simcards. The sprint store loaded all of their contacts onto the moment and all was peachy. As soon as they went onto the market they had to establish a GMail account to be able to use the market. Once the GMail account was established all of their contacts were wiped. We can't find them anywhere. If anyone has had this problem or would possibly know how to locate the contacts it would be greatly appreciated if you could post the steps to do such a thing. Also if there is anyway to put a simcard onto a computer and transfer it to a phone they still have their cards and I could try to do that.
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Sep 13, 2010
I am checking to see if my app has a network connection Whenever I rotate my screen between landscape and portrait this method returns false. It makes me wonder if Network connections are getting killed during the rotation?
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Aug 4, 2009
I want to Download image from Server using Http Connection and at same time i want to show ProgressDialod till is not Downloaded i dont undestand.
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Sep 7, 2010
I want to make http connection which ensures that it is done through wifi only,so that I can not be charged for the transfer of packet from GPRS or 3G network.
It means what ever the connection available I can use only wifi that I want to ensure through Application itself.
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Sep 6, 2010
I am writing an application which checks the security protocol of the phone's wifi connection. Between the phone and AP, they may use 'wpa', 'wpa2', 'wep' or unprotected 'open' connections. how to get such information?
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Aug 17, 2010
I am using org.apache.http.*; API's to make HTTP Post Connections over Internet from the Android Application. I added the Internet Permissions in the Manifest file and it works fine. Now i want my application to make the same HTTP requests over WiFi network through which the handset is connected.
Do i need to make code changes to achieve this? Do i need to add some permissions? as i am unable to make requests...
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Jun 23, 2010
We live in the sticks and we get a bit of a G connection here, maybe 1 bar if we are lucky.
What I've found is that my samsung galaxy S with android 2.1 uses the G connection no matter how bad it is despite a perfectly good wifi connection here.
It's only if the G cononection completely drops and the red no entry sign appears to show us that the carrier isn't available at all that suddenly the phone uses wifi.
Is there a way to change the provider order so that the phone will use wifi before g/3g ?
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Mar 10, 2010
is there a way to force a connection (http) to go over OTA (Over-The- Air) even if you have a wifi connection?
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Jun 6, 2010
Is it possible for Android to connect to Windows ICS (Internet Connection Sharing) via WiFi?I have set up Windows ICS (Internet Connection Sharing) on my Windows XP laptop WiFi adapter. The connection is open with WEP disabled.From a Windows Mobile 6 PDA I am able to see various WiFi routers, my laptop ICS and connect to the laptop ICS.From Android I am only able to see the various WiFi routers, but not the laptop ICS connection.Does the Windows ICS use some special Microsoft protocol that the Android WiFi adapter can not detect?Is there some other Android software or app that can connect the Windows WiFi ICS?
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Aug 22, 2009
When making a connection for streaming content, what is the algorithm for when to use a WiFi connection and when to use an OTA connection? Can you modify that algorithm? Can you specify what type of connection to make?
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Jun 19, 2010
I cannot hold a wifi connection on my Evo. I try and connect at home sitting ight next to the router, and it just disconnects. Anyone else?
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Aug 21, 2011
I'm new here and I'm using a doixanh ROM, GingerDX (but I already used Froyobread). So, some time ago I had a problem...I couldn't connect my device (Sony Ericsson Xperia X8) to wifi.
What I did? I full wiped the phone...and that fixed the wifi issue. But now I have the same problem...I can't connect my phone to wifi anymore!
I could do another full wipe, but this problem would just appear again and again...I googled for some fixes and I found some answers...one of the solutions would be deleting one file (dhct or something) from the phone...the problem is: I don't have that file...
Another (on a youtube video) to download an "hot fix" package with 3 files and place them on the phone...but the link that he gave is broken and I couldn't find those files on the internet.
Like wifi, my phone's GPS doesn't work too.
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Aug 30, 2013
Is it possible to have a Direct Wi Fi Connection between my Android device (Lg L5 e610) and my PC (Win7, Ubuntu 13.04, Mac OSx Snow Leopard)? Is there any tool or program to do it? Or at least a developement project (I like to be a tester)? I found some solutions for my question but they need to a router to work and i haven't it
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Jun 27, 2012
I would like to be able to share my ethernet internet connection on my android 2.2 tablet via wifi.
I know there are various app's on phones that allow you to share your 3g connection but I have not found anything that I can actually install that will create the same sort of functionality on my tablet, most of the ones I've seen on the play store are simple short cuts giving control over the pre-existing wifi hotspot app.
What I need is the wifi hotspot itself, ie the ability to use my tablet as a router/bridge.
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Dec 14, 2009
I'm developing a C++ application for the android that needs to talk with a server whenever there is an internet connection available. If the internet connection is cut-off the application needs to "sleep" in order to reduce the battery consumption. If the internet connection is back the application should "awake". I'm searching for any kind of event notification available for C++. I don't want to use pooling. I know that in java we receive these notifications from the connectivity service.Can we trap them natively?
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Sep 4, 2010
How can we know the current connection type (ex. Wifi, 3G, 2G...) programmatically?
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Feb 2, 2010
I have an app that runs on a closed network with no Internet access. I connect to it through WiFi. My app also uses Google Maps. Is there a way to make the MapView still pull from my 3G connection while the rest of the app uses the WiFi? The issue is once connected to the WiFi, maps tries to pull from the Internet and can't get there so my MapView is always blank.
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Sep 9, 2010
I don't want my app to crash if the user doesn't have wifi or 3g connectivity. How can I catch this at runtime in my app?
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Jan 31, 2009
I've been trying to create a local connection to a computer with a Socket from the emulator thinking that it would automagically uses a emulated wifi connection. It doesn't work, in particular because wifi is not supported on the emulator:
- Does a Socket connection automatically choose the fastest connection (the wifi one if it exists).
- Why wifi not supported by the emulator? Will it be?
For those in countries still not blessed by the grace of having the possibility to buy a Gphone, that can be useful...
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Sep 6, 2012
I know this might be a silly question and probably not usefull to many but i am trying to connect audio out via bluetooth and out the headset jack at the same time
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Oct 1, 2010
I have an application in which I need to connect to an access point with a specific name. Therefor I start a scan (WifiManager.startScan()) and listen to BroadCastEvents of type SCAN_RESULTS_AVAILABLE_ACTION and NETWORK_STATE_CHANGED_ACTION. When the scan results are available, I check if my AP is found and if so I connect to it.
When I'm connected to the AP, I receive a NETWORK_STATE_CHANGED_ACTION and there I open a SocketConnection to my serverSocket. The problem I'm having is that on the moment that I'm connected to the AP, the DHCP request is not yet finished. This causes the opening of the socketConnection to throw a "SocketException: Network unreachable". A few moments later I see in the logcat logging: WifiStateTracker - DhcpHandler: DHCP request succeeded. If I try to connect after this message, all goes fine. is there an event that I can listen to that informs me that the DHCP request is done? Now I try to create a connection and while an error occurs I retry. This is however very dangerous for hanging (if e.g the dhcp fails, the loop will never stop...)
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