Android : Want To Create - Establish Ad Hoc Network On Emulator?
Sep 23, 2010
I am developing an application for android based cell phone from emulator. The application i am developing requires ad hoc network. I do not own the phone or can't get it from anywhere else. So I want to create and establish ad hoc network in that emulator only. I am using standard ADK 2.2. I read somewhere that the information and settings of networks are read through a file called tiwlan.ini. Is this file available even for emulator? If it is, where is it located inside it? If its not, can i copy the file available on Internet and put it somewhere inside my emulator and change system path to read network information to that file's path? If even that is not possible, is there any solution available by which I can establish ad hoc network on emulator?
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Jan 24, 2010
I've read many postings about problems getting the Android emulator DNS to work properly in certain situations. I have a simple app that makes an HTTP connection to a server on the Internet. If I use an IP address using the latest version of the emulator it works fine. If I use the domain name it throws a java.net.UnknownHostException: Host is unresolved: exception. The identical code works fine on any actual device. Has anyone figured out how to fix this situation? I've spent days trying everything, from using proxy servers to setting up and running a DNS server on my development machine. This situation/experience is a shame, because the emulator seems like such an impressive and well thought out collection of tools for developing and testing apps. However, it is currently useless to me. Is there anyone who can help? A prior thread on the same issue-appears to be the same situation: http://groups.google.com/group/android-developers/browse_thread/threa...
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Apr 7, 2010
I'm doing a distributed system using Android for my research project.In order to test it, I have connected two emulator instances in the same host machine. However, I need to put these two instances in separate host machines and make them connect through the local network (Wi-fi).I have seen that the emulator runs behind a virtual router, so it seems that I would have to somehow configure such virtual router, in order to forward my requests.
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Aug 5, 2010
I've noticed very poor performance in the emulator (1.6 and 2.1) when trying to complete the forth statement below. It will take 5+ minutes running in the emulator. Interestingly, when I debug on my phone it's not nearly as bad at maybe a minute or so, but still not great. Running the app on my phone without debugging yields great performance (seconds). URL url = new URL(CommonProperties.BASE_SERVICE_URL + "param=1"); DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); Document dom = builder.parse(url.openConnection(). getInputStream()); is there something I can do to speed up network access while using the emulator? Has anyone noticed anything similar?
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Mar 10, 2009
I install sdk on centos.At first it works well. But I encounter a strange issue:One day my emulator can not access it's host os's network any more.
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Aug 3, 2010
How do I simulate a WiFi network using the Emulator?
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Mar 16, 2010
How do I monitor network traffic sent and received from my android emulator?
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Mar 27, 2012
is there a possibility to share a directory on android for other clients?
i want to access a directory on a avd from the host, but a frequently pull of the files via adb is too slow for my purposes.
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Oct 22, 2010
I am trying to test some udp networking between emulator and host and I have a problem with setup. I assigned address 10.0.2.14 to the host interface with 10.0.2.1 as gateway.. Can't ping 10.0.2.15 from my host, neither can i ping 10.0.2.14 from emulator. Ping from emulator to 10.0.2.2 works fine - I can capture that ICMP traffic on the loop back interface of my host, so ICMP works, but how can i create traffic from the host to emulator? Can someone point me how to make it work? Note: firewall on my host is disabled.
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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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Aug 26, 2010
i am having difficulties to have my android app running in the emulator to connect to servers in my local network.i am getting a java.net.UnknownHostException but the servers are resolvable fine from the machine where the emulator is run.
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Nov 11, 2010
I'm trying to write an application that needs to know when there is no IP network connection available. I am using the android.net.conn.CONNECTIVITY_CHANGE broadcast event along with ConnectivityManager to react to the changes in state to achieve this, but I'm having problems testing my set up in the emulator.I have tried both flight mode and pressing F8 to disable the "Cellular Network" but even with both of these engaged the application still "sees" the underlying network.Has anybody managed to find a way to simulate a total lack of network access?
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Mar 11, 2010
Is it possible to activate the network location provider on the android emulator? Maybe with a fake cell id?
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Apr 30, 2010
I only get a phone signal about a third of the times i start the emulator. I've read on these groups that you have to have an internet connection before starting the emulator. Since i'm connected to the internet 24/7 :) this is not the problem I've also read somewhere that you should try do disable all other network connections (which i've done) and the problem persists. I'm using Windows 7 and Android 2.1 + API's emulator. You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android
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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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Nov 22, 2010
Can anyone tell me how to create an emulator for samsung phone. Is there any add-on for this.
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Jul 9, 2010
I have an android application that parses some HTML, downloads an image, and displays it. I'm using an AsyncTask to do the HTML parsing and image downloading, but that shouldn't be relevant. I never have a problem when I'm on WiFi on my phone, when I'm using the Eclipse debugger on my phone, or when I'm using the emulator. When I have my phone on the cell network (even with pretty good reception), the image sometimes fails to display. I'm having a hard time figuring out what is wrong, since the problem cannot be reproduced in the debugger. Does anyone have any idea what could be wrong?
Update: I have narrowed it down to the image downloading function. This way my original code:.......................
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Oct 23, 2010
I am in middle of learning application development. I have created an application in 2.2 and tested that in my HTC Nexus One device. I looks like fine. My client testing same application setup in his device (Droid2). I don't have that device to test.
He said there are some font sizes are vary and button alignments are missing. When I testing in my device everything looks fine. So, I need to test my application in Simulator which resembles like Droid2 device. Can anyone tell me how to create emulator and setup like Droid2. And also, is there any need to adjust my code or anything in manifest file.
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Oct 13, 2010
I want to create a file in emulator android storage path /data/ but it seems I can't create a new file by programs,I should upload an empty file to /data/ and then write the file,an anyone help here? openFile Output("file.txt", MODE_PRIVATE) seems can create a new file in /data/data/Package/files/.but it can't create in path /data/.
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Nov 18, 2010
I'm trying to create a new Eclipse Project where I can test android classes without having to start the emu or connect a device.
I imported the android libraries, but I can't get it to work... My project only contains one java file where I use an android class, I only want to start it as a simple java app.
The error I get is: "Exception in thread "main" java.lang.RuntimeException: Stub!"
My question is: How can I create a simple java project (in eclipse) which uses android classes?
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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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Jan 20, 2009
I am trying to create small simple application on emulator. I want to create button and display with some click event. I am not able to use findViewById method with R.id.abc. It always gives error as R.id cannot be resolved.
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Jul 22, 2010
I am working on an application specifically for Samsung Galaxy S(I am not the one making decision here) and they want its layout to be pixel-precise accurate.
Can I just use normal 2.1 AVD?
So I tried creating WQVGA432 but it looks like this. I'm not sure why the LinearLayout does not fill up the screen but only use up to the large images with Korean (which I can't scale down, but that's different question). code...
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Jul 27, 2010
I've never used the wifi hotspot feature on my EVO, but it seems pretty simple as to how it works... What I'm wondering is if it functions like a typical wireless router. Specifically, does it create a LAN network between connects peers? I'm wondering if it would be at all possible to do something like play (low bandwith) multiplayer LAN games over the EVO's wifi hotspot?
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Oct 18, 2010
I am a beginner in Android and i want to establish a serial port communication(UART RS232) library in Android Framework Layer. My applications want to use that libary to send messages to some serial port devices. here we wan to use android as a embedded device and not a mobile device. can you suggest me how to establish a seria communication and to add that library on android framework layer.
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Oct 14, 2010
I am able to connect 2 phones through Bluetooth. But is it possible to connect through the wireless network?
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May 9, 2014
I want Terminal Emulator to run the following every time I boot up:
adb shell
su
cat /sys/devices/virtual/sensors/proximity_sensor/prox_cal
is it possible to create a file or app that automatically runs that?
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Feb 14, 2013
I'm developing an App that sends keep-alive packets to its server to ensure the connection is still alive.
The server is java based and thus easily to run. I run the server on a virtual machine (Windows 7). After my App is connected and the first keep-alive packet is received (it displays a message in its console output) I disable the network interface in Windows. This step is very important because by disabling it, there is no way to send any packet back to the client informing it about network changes.
The clients are configured to send every 25 seconds a keep-alive packet, so you don't need to wait long.
When you use the sample JavaClient on Windows 7 it takes less than a minute after the keep-Alive packet and an exception is thrown which triggers reconnection (which currently can't occur). This is the expected behaviour.
When you use the sample Android App on an emulator (tested Android version 2 and 4) it is the same behaviour. So in less than a minute after the keep-alive packet it recognises that the connection is dead, throws an exception, this triggers reconnection.
Problem is now when this App runs on a real device (tested several, Xpearia Arc S, one Cyanogen Mod 4 on Galaxy S3 and my Galaxy S3). I've waited 5 minutes, but there was no exception. This behaviour is reproducable.
Since this is a sample App, it uses no wakelock or service, so to test it is important to have it in foreground all the time (don't switch to other Apps or homescreen) and increase your display timeout to a few minutes to ensure that it doesn't go off. Use Logcat-Output to get informed whats happening, because there is no output in the App itself.
Now Sample-Code is in the attachement. Something had gone wrong. The Code consists of 3 Eclipse projects which you can easily import.
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Jun 9, 2010
I'm working on a Push Notifications library for Android (http://deaconproject.org/) that needs to take action if network connectivity is interrupted or changed - namely, it needs to re-initiate a server connection or pause its operation until network connectivity is available. This seems to work fine using and Android BroadcastReceiver for "android.net.ConnectivityManager.CONNECTIVITY_ACTION".
My problem is in testing the library - I would like to automatically test the library's response to a broken network connection, or a transition from 3G to WiFi, under various configuration conditions. The problem is, I don't want to sit with the emulator and hit F8 all day.
Is there a way to programmatically manipulate network connections on Android from within a jUnit test without resorting to toggling Airplane Mode? I've already tried issuing commands to the emulator via the console, manipulating the GSM mode, etc, but while the phone state changes on the display, the Internet connection remains up.
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