Android :: App Crashes In Emulator - Logs Blank
Mar 29, 2010
I have a simple app that I am building to get the hang of android's development environment - and things like click events, etc..
The app loads, and I am able to change the text in a textfield using a button handler. However, when I import the location class, and try to do a simple GPS call, the application crashes.
The problem is, everything looks good in Eclipse (error console) - and I'm not seeing any exceptions in the android emulator (DevTools). I have the logcat window open, but I haven't done anything in eclipse/code to send logcat anything (do I need to?)
Is there a better way to troubleshoot?
CODE:........................
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Feb 22, 2014
Ok, so I wonder how to troubleshoot Android phone crashes, freezes, reboots, etc.
Maybe there are ways to troubleshoot these kind of events by looking at loggings to pinpoint the problem (like does a particular app cause this, or a hardware event, etc).
I see my HTC notices it recovered from an abnormal reset for instance, and asks to send logging to HTC HQ, so there seems to be ways that could tell more what is causing trouble?
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Jan 14, 2010
I'm nearly ready to publish my OpenGL game. I've been browsing this newsgroup and I've seen quite a few posts regarding crashes, blank screens, etc when running an OpenGL application on the Droid. I have three questions:
1) What are some common pitfalls that occur when trying to support the Droid/Nexus One? So far, I've tested my game on the Android 2.0 emulator (both WVGA & FWVGA) and everything works fine but I'm still paranoid.
2) I've placed my textures (png) in the assets folder. Will these images be pre-scaled automatically? I've read about specifying density independent images for resources but do the same rules apply for images stored in the assets folder? I'm afraid that pre-scaling will cause my textures to become non-power of 2.
3) What additional strategies have developers been taking to ensure their application works on the newer devices when they only have access to G1/G2 hardware?
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May 7, 2014
The problem is that I have created multiple emulators using android 4.4.2 API and none of them show anything but blank screen..I tried an AVD with Google API 19..thats not working either..
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Jun 28, 2010
We are exploring the default applications in Froyo and we found out that the Camera app always crashes seconds after it loads.
Is this related to the no camera/video input limitation of the application? If not, what seems to be the problem? We already added all the additional properties to the AVD. We also disabled the auto-rotate screen option.
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Oct 18, 2009
I am using the Android Emulator to debug my application, first off it is ridiculously slow, I mean like 15mins to load slow and on top of it, my Alarm Clock application fails?Am I the only one, or do other people experience this? Is there a fix or will I just have to go cook steaks while the emulator is booting?
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Dec 2, 2009
i am writing a widget and trying to prove that it doesn't run when the phone is in deep sleep as i am setting an alarm with type ELAPSED_REALTIME. when i hit the end call on the emulator the device screen goes blank, but i still see my alarms being delivered. am i missing something?
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Mar 15, 2010
WARN/WindowManager(61): No focus window, dropping: KeyEvent{action=0 code=82 repeat=0 meta=0 scancode=229 mFlags=8}
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Apr 15, 2010
When I put the setContentView in thread as below, it crashes while running in emulator. code...
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Aug 23, 2010
I will try to be specific if I can - please be patient, first time asker and relatively new to programming on this platform. Apologies if this has been asked/answered before - please link it to me. I have searched up and down but find other unrelated (to me at least) problems.
The real puzzler for me is that my app is crashing on my emulator but when installed on my phone (via upload of apk to phone and then using an AppInstaller app from market) it works.
The crash comes from a NullPointerException at the numbered line in the following code snippet (my code) of a custom list cursor adapter.
CODE:....................
The following error dump is created.
CODE:..............
Curiously I have been happily programming and debugging away all day and out of the blue a long working and bug free portion of my app now throws up this error.
I suspect it might be a problem with the databases, but really not sure - nothing seems out of place there. Up until today I had a database with only one table - today I added a new table which also has a "_id" field as the name autoincrement key field, which I read in the docs was required for android list adapters (if memory serves). Having some experience in coding and some minor experience with databases, that seems like a bad idea to me but I am uncertain of if that is the problem and/or how else to do it.
The crash I am listing here does not display or make reference to the data in the other, new table. The cursor does not contain any query data from it. In fact if I rename the key field "_id" of the new table to something else (ie "_blah"), the crash remains.
Like I said, if I upload the apk to my phone, it works.
I have tried the following on the emulator:
- restarting adb (and eclipse) - no result
- uninstall from emulator - no result
- destory AVD profile and recreate - no result
I am developing this under the Android 2.1 SDK, and have been for the last few weeks. I have only ever had that SDK installed, I am yet to update to 2.2.
Not sure what else I can say here - hoping somebody here has experience enough to shed some light on it.
Without a fix to this, I can anticipate a very slow development process here on out (assuming I have to upload to my phone to test new code changes...).
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Jul 16, 2010
I'm trying to understand remote services at the moment and everything works fine, i can start the service and know how to communicate with it through the AIDL-interface. My problem is that the service seems to still run in the same process like the activity it was started from, because the activity crashes too, if there is an error thrown in the Service.
I set the service process to remote ( android:process=":remote" ) so what am i doing wrong? Or what do i have to do to unbind the service-process completely from the activity-process?
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May 16, 2009
I want to know whenever someone is called, calls, smsed or smses. I figured for the calls I'd use the phone state change to trigger when I should check the CallLog provider again. I couldn't see any direct way of getting broadcasts from the CallLog. Did I miss it?
For SMSes I'm having more trouble. I'd like to know whenever and SMS is sent or received. Being able to receive STATUS_ON_SIM_READ and STATUS_ON_SIM_SENT would be great, but from what I've read in the Sms Manager that would depend on the sending application. I can't seem to find any evidence of a default one that android places when it sends. I also couldn't find an sms log provider or anything similar.
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Sep 4, 2010
I have an app that is not in the market place (signed with a debug certificate), but would like to get crash log data, whenever my application crashes. Where can I find a log of why my app crashed?
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Mar 2, 2009
I want to make an update to my app, but I seem to have lost or mis- entered the first time (more likely) the key password. Is there any way I can make my users do a safe update of my app or do I have to re- publish? What do I do in this situation? Any way I can access Windows CMD logs?
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Oct 16, 2009
I want to redirect the Logs into an file. How should i proceed ....?
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Aug 3, 2009
Is there a way to access the default logs on the phone for purposes of uploading for debugging purposes? I'd like to be able to provide an "Upload Logs" button that allows the users of my app to upload their logs if they are encountering issues with the app. I know I can write my logs to my own file and provide an upload for that, but I like the context provided by the system logs interspersed with my log entries to understand what else is going on on the device when my app has issues.
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Feb 26, 2010
Would anyone please try to explain to me why
public void addView(View child) {
child.setDrawingCacheEnabled(true);
child.setWillNotCacheDrawing(false);
child.setWillNotDraw(false);
child.buildDrawingCache();
if(child.getDrawingCache() == null) { //TODO Make this work!
Log.w("View", "View child's drawing cache is null");
}
setImageBitmap(child.getDrawingCache()); //TODO MAKE THIS WORK!!!
}
ALWAYS logs that the drawing cache is null, and sets the bitmap to null? Do I have to actually draw the view before the cache is set?
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Apr 29, 2010
Is there an app that anyone knows of that allows you to restore your call logs from a WindowsMobile format, or is there a format that I can transfer them into to be able to restore them on Android?I searched and searched and could not find anything on this.I have many cases where there are SMS threads going back several years, some containing invoicing information, and I would like to not lose them.Same with the call logs the history may be important.I've transferred them from several WinMo phones in the past, so have built up quite a history.Don't worry about size or having to put them into a format, I can worry about that, but how can I load them into the Android?Is there maybe a forum or thread that has the file formats for Android? An application that "merges" the data into Android?
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Jul 2, 2010
Is it by anyway possible to write to call logs database?? I mean i want to add selected numbers to the call history. I tried searching the tutorial on net but couldn't find any. Though 1 thing is for sure, IT CAN BE DONE. coz i have seen lots of applications online, which restore call logs, so i guess we can modify the call history database somehow(but how exactly is not clear with me).i already read this post but it happens to be posted a long time back.
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Jul 16, 2009
Usually happens after a force close. Instead of showing the usual 30 lines or so of logs + scrollable history, it only shows a single line or a couple of lines. The only fix that I can find is to restart DDMS.
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Feb 3, 2010
Is there a programmatic way to read the system logs? i know they are stored in /dev/log.
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Jul 19, 2010
To facilitate diagnostics while the app has been deployed, does Android provide any API to facilitate runtime logging? It would be ideal if the app could retrieve all the messages it wrote to the Logging System via the Log API functions.
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May 15, 2009
I need to display all Logcats Log on console of my emulator, as do it the simple program "Hello World".
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Aug 12, 2010
I'm testing an android application with a long running service. I'm using Eclipse and have the usb cord hooked up with the phone sitting next to me. Since it's a long ongoing service, I do some other work while it runs and check the logcat logs every once in a while to make sure everything is going as expected.
A few minutes ago I noticed the phone rebooting. I think it's done this before as it would explain some weird application behavior. I quickly switched over to Eclipse to see what happened and found that the logcat log was (it seems) cleared during the reboot. So there's no log of whether my app crashed (and took down the phone?!) or if there was some other problem that took down the phone and my app.
Is there anyway I can find out what happened? This is a development phone, so I don't know if it reboots/crashes often on its own, or only while my app is running. It's a Motorola Droid running Firmware version 2.1-update1.
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Jun 23, 2009
I want to let the users send me the logs from the device i wonder how do i extract the logs in to a file on the device ?
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Jun 24, 2010
Is it possible to clean DDMS logs clean up though ant script pl.
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Oct 30, 2010
While debugging, Log.d() or Log.e() methods come to LogCat, but how do I capture the runtime error or trace log on the Android device when it is not connected to the development environment ?
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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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Nov 20, 2010
We are trying to create a listview exactly similar to 'call log listview' of 'contact' application (which is a default one). There is one listview item but two clickable controls.
1. Left one - for viewing call log details
2. Right one - for calling that person
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Nov 1, 2010
How to create a layout similar tho that of call logs in android contacts?
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