Android :: App Works On WiFi In Debug Mode Or On Emulator Not On Cell Network
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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Nov 1, 2012
In Ubuntu, I have double checked the udev rules. They all look perfect. (I cross checked using another phone too). The USB debug mode doesn't show up no matter what. And I have the adb_usb.ini in the right place. I have tried running all possible combinations of running adb, adb start-server as root. But
Code:
adb devices shows no devices at all.
However, with the USB debugging option enabled on phone, it worked on Win7 after windows installed a Common handset driver.
If I go back to Ubuntu without disconnecting the cable and do
Code:
$ adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
1234567890ABCDEFdevice
The product id is 1234567890ABCDEF and I am able to see it and everthing works fine!!But the moment I disconnect the USB cable, its gone.
So I guess it's not the development machine that is at fault. The device seems to be setting a property while in Windows which stays latched till the usb connection goes off.
Btw the Code:
/data/property/persist.service.adb.enable is 1 too.
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Oct 19, 2010
I have an android application using LocationManager get the cell network location and not the Wifi location? If I have turned off the Wifi antenna and do the following:LocationManager lm = (LocationManager) paramContext.getSystemService(Context.LOCATION_SERVICE);I am always returned the Wifi location and not the cell network location. I want it to return the cell location since I have moved fromthe Wifi location. I tried using a LocationListener but that doesn't seem to help.
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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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Feb 11, 2014
I would like to have the cell network type displayed while I am connected to WiFi in the status bar signal cluster. Currently, once you connect to WiFi, the LTE, H, E, etc, go away; I'd like them to stay.
I can move the WiFi icon over to make room for the type icon (LTE, H, E, etc) just by deleting "android:layout_marginRight="-6.0dip"" at the end of the "id/wifi_combo" line in res/layout/signal_cluster_view.xml in SystemUI.apk.
Where is the function that turns off that cell type icon when WiFi is connected in SystemUI.apk? I know the system can detect the type of network whilst WiFi is connected, it's just a matter for forcing that icon to stay displayed.
I am trying this on Cyanogenmod 11.
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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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Aug 6, 2010
I created a sqlite database to store playlists for a media player I am developing because of extended feature (rather than using the Content Provider). It works perfectly on the 1.6 emulator but FCs on anything higher than 2.0... what has changed that I need to know about as far as opening databases in SDK 2.0+? Here is the logcat.
CODE:.............
Here is the dbhelper class
CODE:................
why can't stackoverflow just use tags like a normal syntax highlighter.
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Jan 9, 2010
We need to deploy Androids to remote locations where there is no cell service.What seems to be the only option is to create our own localized cell network (yes, we know that is expensive.)The sole purpose would be to support Android applications.What would be the requirements from a phone perspective?Could I use off the shelf phones to connect?Can I just program the SIM cards to be on my network?
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Apr 16, 2009
So my app works well in the emulator in various run configurations and on the device when the device is connected to WiFi. But when I switch off the WiFi on the device, the code that goes out to the network takes forever and then times out (i.e. doesn't return any data). Other people have reported this as well. I also notice that no data is going out or coming in when I look at the little up and down arrows on the 3G icon in the status bar on the G1. I am assuming that the Java code I am using should work for both types of connections, right? I mean, do I need to account for the fact that cell data network is very slow with high latencies i.e. pre-cache my data etc?
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Oct 1, 2009
I developer a android app. Today I get the HTC hero for testing. I installed the driver and can start the app on the device. The problem is that I need a network connection. I am connect via usb to my desktop computer. Can the device that is on usb connect use my i-net connection to send a request?
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Mar 3, 2010
I recently downloaded the latest NetBeans IDE (for MACOSX) and imported/migrated a project over from the ECLIPSE environment.Everything looks, and works well... except that EMULATOR gets stuck "waiting for the debugger to attach." I tried "Attaching Debugger." and set the PORT value to every case I've ever read about (8200, 8700, 5555, etc.) but the connection is refused.I am of the opinion that this is not the preferred way to start a debugging session in NetBeans for Android.
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Feb 16, 2010
Is there any way to retrieve the current cellular Signal Strength (RSSI) on Android 1.5?
I know there's a way to listen for signal strength updates through the TelephonyManager, but this seems to only give a "state," not a numeric value.
Is using the RSSI field on a neighboring cell fairly accurate? I'm guessing not, but I'm running out of ideas.
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Nov 11, 2010
I have a brand new Galaxy Tab that I am trying to use for some development. However, the usual method of installing the ADB driver isn't working on my Win 7 x64 version. (I have even tried the USBDeview method of deleting everything that looks like an Android device.)
Has anyone out there gotten this to work? If so, what did you have to do?
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Oct 8, 2010
I'm using maven-android-plugin in my android application. I'm a dependency which maven download from remote repository before APK build. But if I want to debug the APK in emulator it does not include the those maven dependency and as a result APK does not run with normal Run (using Eclipse) and can not be debug as well. Could someone know how to debug in this situation?
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Sep 3, 2009
I'm trying to figure out a way to programmatically determine if my build was built in debug mode vs. release mode. I'd like to hide some items in my settings screen if it's release. When I build my app in Eclipse I'm building by default in Debug mode. However, when I build the app using the command line, I build it in release mode and sign the app using the jarsigner tool.
I've tried using:
PackageInfo appInfo = manager.getPackageInfo("com.adobe.psmobile", PackageManager.GET_SIGNATURES);
to test if
appInfo.signatures[0].toCharsString()
matches my debug signature and that didn't seem to work.
I'm now trying to see if I can introspect the app's KeyStore, to match the default debug alias described here:
http://developer.android.com/guide/publishing/app-signing.html of "androiddebugkey"
but I haven't figured out how to retrieve the app's KeyStore yet.
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Nov 15, 2010
my android application runs in debug mode only even if i click the run button of the eclipse or run it by touching on its icon on the device. what will be reason for this?? anybody has any idea about it?
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Jun 19, 2010
Is there any way to log within the application without being in debug mode. When i am in debug mode the application runs too slow.
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Nov 19, 2010
To make development easier, I want to be able to send textual commands to my android app(especially prior to having prior the UI completely fleshed out).Presumably in the emulator, but it would be great if it also worked on a device connected via USB.Of course, I could add an editText control to my app and type the commands in there, but would prefer not have deal with debug things cluttering up the UI and all the complications of that.I also would like to be able to paste text from computer clipboard, which sorta rules out EditText controls.Is there any way to do this, say via any of the android-sdk/tools/ stuff? I would implement the command processor java class/method, but need some way to be able to actually feed it a string. I suppose I could do something that talks to the emulator via the file system or something, but would prefer not have to spend a lot of time doing this if there is something already available.
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Dec 23, 2009
I have some information generated in the Android Emulator, and the only way I can see to get it out is using the Log class.
However, you cannot copy-and-paste from the DDMS log window. This is really annoying as I cannot use the information in another application, for example, without retyping it.
Is there a better way to get debug information out of the emulator? What happens when you write more complex applications? What do you do when you need to verify it is writing correct information to URLs, databases, files etc?
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Jun 10, 2009
I need to debug android's java framewoek layer like telephony so how to debug that.
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Aug 20, 2010
I would like to know if there is anyway to debug the HTTP response with the android emulator. my logs show that the response is not arriving complete to the application and i would like to know if it is the server that does not send the complete response or if my application is not processing the response completely.
I tried hooking up Fiddler and Blurp proxy, it actually works with Blurp proxy but only for HTTP and as you may guess i need it also for HTTPS
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Jul 25, 2010
I have a activity B that is called by activity A, I want to debug the code in B. I have set the breakpoint, however the debug control never enters B.
CODE:................
When I debug in eclipse, although the class B is called from class A, the debbugger pointer never enters the new window, where I have placed a debug point in Class B. I am not able to take the pointer control to class B and stop at a specific point, which will help me verify certain variable values.
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Aug 12, 2010
In Android is there a way to disable logs/stacktrace being printed when the application is code signed and is in release mode. Is there any direct way to do it?
In Iphone i heard the logs will not be printed in release mode by default.
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Sep 1, 2010
I see users prefer this forum, so I'll ask here.
I can't stream aac or aac+ when on the cell network, only when on wifi. This is not a bandwidth issue. On Cherry player, for example, it almost immediately goes to a stopped state, before making any real attempt to connect or buffer--long before any timeout that is.
Anyone else experience this?
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Jan 23, 2014
My devices where certain apps won't refresh/sync when I'm on wifi after getting a new router. Is there any way to see a debug log of what the network connection is trying to do when apps are trying to refresh?
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Oct 31, 2010
Fellow droid incredible users, I am trying to root my phone with unprovoked and i have the 2.2 system on my htc incredible. I'm unable to find "debug mode" in the settings and i need it on to apply the unprovoked root. Please help me find debug mode.
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Jul 22, 2010
I have a listview. Whenever I strike an item of listview the debugger gets opened instead of starting a new activity (i.e. what I want). Code...
P.S. all the xml files are correct.
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Oct 12, 2009
I am running Eclipse on Win32 and my Android emulator on Linux.
Is there a way to use Win32 eclipse to debug code on the emulator that runs on Linux?
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May 3, 2010
I have pdanet tether app on my phone..Its working great. But should i turn off usb debug mode when i am not using it to tether?
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