Android :: Programatically Selection Of 3G Network Connection In G1?
May 11, 2009
I'm working on some data transmission program and current it works alright on WIFI connection.
However, I understand that if I am in an environment where there are both 3G and WIFI coverage... the phone will (by default) be turned onto the WIFI network connection.
However, if for some reasons, I wish to be connected directly to 3G (e.g. 3G is more stable in public WIFI area).... is it possible to do so programatically on the Android phone? If i'm not wrong, it's possible using the ConnectionManager API, am I right?
May i ask if anyone has done something like that and don't mind sharing the code snippets to do so , or point me to the right direction for this?
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Mar 3, 2010
I am trying to do a little app to list and connect to other Network operator.I list them by going to:
Settings
Wireless Controls
Mobile networks
Network operators
Search networks
And I connect to other Network operator by clicking on one of the list.I've been searching methods from ConnectivityManager but I don't find something like connectTo() .Any ideas of how I can do this?
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Jan 4, 2010
If I wish to initiate a GPRS data connection programatically through a configured access point on the device, how do I go about it ?
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Mar 6, 2009
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 ?
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Oct 18, 2010
before i begin i just want you to know ive tried to search for a whole day and still hit a dead end.I just bought an X10 for AT&T USA so its x10a. brand new.I already have it unlocked already so im using T-mobile USA.I also have setup my internet access properly via tweakker.com
My question, why can i only use EDGE?! no 3G.when i go to settings the network mode selection cannot be selected.what gives? should i debrand my phone? or root? will it make a difference? or is there a hardware issue here?
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Aug 4, 2009
I'm trying to use Spinner as a button with selection pop-up. Basically I want an icon and when user clicks it - the popup list is displayed and user can make a selection. The Spinner happily accepts icon image as drawable background. Unfortunately when I select a value the text overlays the background. Is it possible to set selection text color as a transparent? Or maybe there's a better way?
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Jun 10, 2010
I am developing an Android application and I would like to setup a tcp/ip type of connection between two Android phones using the 3G/Edge network. My test version will establish a connection if I have both phones on a lan using wifi but when I use T-Mobile's network a connection is not established. Could this issue be a port or ip address?
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Sep 8, 2010
I'm building an application for my own use, and I like to get connection via mobile network but I don't know how to do that. What I want is the same behaviour that offers severals existent widgets to turn on/off the data connection.
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Sep 29, 2010
I need to make HTTP request on Android using GSM connection, not Wifi. My current solution is to disconnect from all wi-fi connections and perform a request. Is there any better solution? I could not find any relevant methods in the API (I looked in package org.apache.http, but it seems it is completely unaware of what type of connection should be used).
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Jul 16, 2010
I wonder if anybody has ran into the issue where a running emulator would lose network connection all at a sudden for no obvious reason. And I am sure the computer running the JVM is still online.Restarting the emulator seems to fix the issue but it's been a major PITA for me as it interrupts the work flow.I am using 2.1 SDK 7.
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Aug 20, 2009
I'm running some service on my android emulator. On android I bound it to 127.0.0.1:6100.
How can I access the service from my development machine? Do I have to redirect?
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May 10, 2010
How do you detect the network connection type on Android?
Is it through ConnectivityManager.getActiveNetworkInfo().getType(), and the answer is limited to Wifi and mobile?
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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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Sep 30, 2009
What are the settings required to access network for those who dont have ADSL connection?
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May 11, 2010
I am having this error since last two weeks "Your SIM does not allow connection to this network." I have tried everything to the best of my knowledge:
- Reset Phone (Soft & Factory Settings both)
- Rooted Phone
- AnyCut application to reset Radio
- Updated radio to 63.18.55.06JU_6.35.09.26-signed
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Sep 24, 2011
I want to check that the network connection is alive on the phone from program but when i try to run this code
Code:
private boolean isOnline() {
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
return true;
}
return false;
}
I get the message "Sorry 'Appname' is stopped unexpectedly. Try again".I might have to search the solution elsewhere, i added permissions for network, run the application and got the same error but when i tried to start it from the menu it said application not installed.
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Feb 28, 2009
How to view the list of network connection mobile APNs or WiFi configured on the emulator.
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May 31, 2010
I am trying to determine if my current connection state is WIFI or Cell network (3g/2g... etc)
I am using SDK 1.5.
Tried couple of technique not really working.
Any working suggestions?
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Nov 15, 2010
Recently I've started facing a problem on my Desire. Sometimes it acts like the network is down, and the signal bar shows a cross. At that time when I tried another sim card, the network was working fine. Then after a while my phone starts showing network with the original sim. But it won't connect to the internet. It simply won't connect, although I am toggling the mobile data connection tick mark.
Right now the network has gone again, and I'm trying to get connected to it through either Automatic registration or manually selecting from the list of network providers. But I get the message "unable to connect to this network at this time"...
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Oct 26, 2010
To android 4 months ago and running an Unrooted Desire Android 2.2 on O2 (OTA update to froyo went no problem) No Taskiller
Must say I'm loving android, for the sheer ability to customise it, altough not brave enough to root yet!
Installed folder organiser and launcher pro plus cos I want to change icons and names of folders etc.
My problem is when I switch from sense to laucher pro, i lose my data connection widget/ shortcut and cant get it back. On my sense screen I have the power control widget, which gives me the wifi connection toggle and also a mobile web toggle. I want a mobile web toggle that works with launcher pro.
Downloaded the widgets pack from curvefish, but the APN on/off does nothing at all.
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Sep 6, 2010
Dinc will not obtain IP....I just updated to 2.2 and it worked fine .....then i made changes to my router......turned all the security OFF.....
Does the Dinc hold old info on a current connection? if so can i delete a connection and start fresh....more than just "forget"? Should I name my Routers SSID?
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Jun 29, 2010
3G coverage where my office is located is really poor and the office doesn't have a wireless network (lol I know).
Is there any other way I can share my network connection from my laptop? I know I can use the 3G to my laptop but basically I want to reverse that.
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Jan 28, 2010
Does anyone know if I activate the Wifi connection it trumps the carrier network connection? In other words, if the Wifi connection is active (assuming i have a signal) and my carrier signal is also active, and I want to stream some audio--which pipe does the phone use to bring in the audio?
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Dec 7, 2009
After reading the forums and changing settings and doing a few battery cycles, I had been getting really good battery life of at least two days on medium usage and 3 days on light with my connection not having any real issues. Then, 2 days ago I installed weatherbug and beautiful widgets. While I enjoy both, it seems like my network connection goes down fairly often now and I need to turn on wifi to check email or do anything else web related. Has anyone else lost their network connection and been able to narrow down the cause? I'm hoping it's not one of these two, but I can't imagine what else it would be.
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Dec 14, 2009
I got my HTC Hero the other day and am very very happy with it. The only problem is that I cannot connect to the internet through "Mobile Network". I am on a "3" contract and I am able to access "my 3" which is where I can look at my account, look at my last bill, check my usage, etc. I can also connect to 3 - Home - that loads fine. But any other website (google, bbc, facebook, etc.) will not load - it just times out after a while.
It seams obvious to me that this is an issue with my account on 3. I don't know how many hours I've been on the phone to these guys. I have gone through all the settings with them, more than twice - replaced my SIM card and tried my SIM in another phone. So Three are now looking into it and have passed my issue onto the network's team, now they said that it may take up to 21 days for someone to get back to me!
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Nov 4, 2010
Does anyone know why in wireless & network settings it says connection failed under mobile networks?It'l connect to 3g for a bit but then come up with connection failed?
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Mar 27, 2014
i have Samsung Note 10.1 (GT-N8020) with root access. Where can i place a bash script, so that it is running everytime i change network connection. I mean: mobile data off, mobile date on, wifi on, wifi off
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Jan 4, 2010
I have been a very happy HTC Magic user for exactly 6 months now but then a strange thing happened; I work up new year's day and I could no longer connect to internet or use my apps (and the 'G' network symbol has disappeared from my system tray). I thought the network (SFR in France) may have had a hangover from the night before but no, the problem persisted into day 2. I went into the SFR retail shop on 2 January and the assistant played with every option of my handset's menu for 20 minutes before declaring "I suggest you go home and reinstall the OS from the CD that would have come with the phone".. or at least that's what I think he said as my grasp of French is not absolute. He also offered to send the phone away to reset it or something.
I am convinced, though, I didn't get a CD with the HTC because the box is only half the width of a CD! I recall a USB type cable in the box though. So I turned to these forums and tried the advice given previously by Carl C but that didn't help. I've tried every logical option in the phone's settings (and the 'G' icon does appear for half a second in the system tray after I change/save a setting, before disappearing again) so I'm convinced the problem does not lie there. I am even considering uninstalling some of my recent apps in case they may have inadvertantly caused this problem............
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Sep 28, 2010
im currently trying to work my new phone but to be honest i dont have a clue, it wont let me go on the net i.e facebook youtube or anything,its saying there is no network connection. Is there somwhere i turn this on or do i need to get settings fron somewhere?
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Mar 1, 2010
Im wondering if this is an issue with my phone or an issue with the network in my area. Basically, i try to turn on my mobile network and it freezes at "turning on" i hit the back arrow, head back in and it says that the connection failed or "standby for connecting to the mobile network.The only thing different i have done today is install spare parts, and read a few issues people had with sense turning off, and wondered if maybe something within it is bugging my phone, just a thought though.
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