Android :: Stack Trace / Fix A Bug That Doesn't Point To Any Of Code?
Jun 8, 2010
How do I fix a bug that doesn't point to any of my code? I got the stack trace below from the Marketplace crash reports, but I have no clue how to fix it since it points to none of my own code.
java.lang.NullPointerException:at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:487)at android.view.View.measure(View.java:7964)at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)at android.view.View.measure(View.java:7964)at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023)at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)at android.view.View.measure(View.java:7964)at android.view.ViewRoot.performTraversals(ViewRoot.java:763)at android.view.ViewRoot.handleMessage(ViewRoot.java:1633)at android.os.Handler.dispatchMessage(Handler.java:99)at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:4363)at java.lang.reflect.Method.invokeNative(Method.java:-2)at java.lang.reflect.Method.invoke(Method.java:521)at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)at dalvik.system.NativeStart.main(NativeStart.java:-2)
I'm not seeing any issues on any emulators or devices.
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Sep 20, 2010
My game is crashing on the HTC Hero and I have managed to get a user to send me their log. I don't see a Java stack trace at all. It looks like it's crashing in the OpenGL driver. I was wondering how I could go about trying to determine the problem. I was thinking of adding that acra project that sends crash reports to a server but I am thinking it will just send the same that is in this log. I have error checking everywhere so I am really at a lose where to go from here. I even went out and bought a HTC Hero but Canada only has 1.5 for the OS. Code...
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Dec 16, 2009
So I have an app on the market with >10k active users. I have recieved maybe 50 complaints from Droid-user that the program crashes arbitrarily. I have not been able to replicate the error with my own droid, but I got one of the to send me this crash log. However, it does not reference the application. Do you have any suggestions on how to track down this error? I stand baffled.
11-25 16:18:03.730 D/AndroidRuntime( 2964): Shutting down VM 11-25 16:18:03.730 W/dalvikvm( 2964): threadid=3: thread exiting with uncaught exception (group=0x4001b180) 11-25 16:18:03.730 E/AndroidRuntime( 2964): Uncaught handler: thread main exiting due to uncaught exception 11-25 16:18:03.761 E/AndroidRuntime( 2964): java.lang. Code...
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Jul 6, 2010
Even explicitly writing e.printStackTrace() it doesn't print to the console, why?
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Jul 4, 2009
I'm moving a project to the new Android Native Development Kit (i.e. JNI) and I'd like to catch SIGSEGV, should it occur (possibly also SIGILL, SIGABRT, SIGFPE) in order to present a nice crash reporting dialog, instead of (or before) what currently happens: the immediate unceremonious death of the process and possibly some attempt by the OS to restart it. (Edit: The JVM/Dalvik VM catches the signal and logs a stack trace and other useful information; I just want to offer the user the option to email that info to me really.)
The situation is: a large body of C code which I didn't write does most of the work in this application (all the game logic) and although it's well-tested on numerous other platforms, it's entirely possible that I, in my Android port, will feed it garbage and cause a crash in native code, so I want the crash dumps (both native and Java) that currently show up in the Android log (I guess it would be stderr in a non-Android situation). I'm free to modify both C and Java code arbitrarily, although the callbacks (both going in and coming out of JNI) number about 40 and obviously, bonus points for small diffs.
I've heard of the signal chaining library in J2SE, libjsig.so, and if I could safely install a signal handler like that on Android, that would solve the catching part of my question, but I see no such library for Android/Dalvik.
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Apr 23, 2010
I tried using the MapActivity as given in the following link. http://developer.android.com/guide/tutorials/views/hello-mapview.HTML
I get the error in LogCat : DalvikVm: unable to open stack trace file android '/data/anr/traces.txt' Permission Denied. May I know why this happens. However, after making some changes in the code as shown below, I get the map view perfectly.code...
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Apr 7, 2010
I'm currently working on an android app that pulls a list of forums from a JSON feed. I'm trying to parse the feed and immediately upon calling getJSONArray a JSON exception is being thrown with no stack trace. The JSON being returned is stored in an JSONObject jobj with the format as follows: However when running the following code, I get an immediate exception without a stack trace: Code...
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Aug 17, 2010
Got a trace like this:
java.lang.StackOverflowError
at android.widget.TextView.onMeasure(TextView.java:5160)
at android.view.View.measure(View.java:8172)
at android.widget.TableRow.getColumnsWidths(TableRow.java:308)
at android.widget.TableLayout.findLargestCells(TableLayout.java:497)
at android.widget.TableLayout.measureVertical(TableLayout.java:462)
at android.widget.TableLayout.onMeasure(TableLayout.java:428)
at android.view.View.measure(View.java:8172)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1012)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:381)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:304)
at android.view.View.measure(View.java:8172)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1012)
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:696)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:306)
at android.view.View.measure(View.java:8172)
at android.widget.ListView.measureScrapChild(ListView.java:1135)
at android.widget.ListView.measureHeightOfChildren(ListView.java:1200)
at android.widget.ListView.onMeasure(ListView.java:1109)
at android.view.View.measure(View.java:8172)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1012)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:381)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:304)
at android.view.View.measure(View.java:8172)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
at android.view.View.measure(View.java:8172)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:526)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:304)
at android.view.View.measure(View.java:8172)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
at android.view.View.measure(View.java:8172)
at android.view.ViewRoot.performTraversals(ViewRoot.java:805)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1744)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:144)
at android.app.ActivityThread.main(ActivityThread.java:4937)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method) Is there anything that can be done here? I'm getting reports of blank screens and force closes.
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Apr 29, 2010
Is there a way to achieve the following in Android?
1. generate a Java stack trace in Android. In J2SE, we use to use something like this - send a signal to the Java Virtual Machine; the Java Virtual Machine generates a stack trace for you; or we can also use debugging tools or Java API calls.
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Feb 12, 2009
Here my application "com.android.hello" calls a core library "libvt.so" through JNI call. There is a segmentation fault in "libvt.so". When executed I get the following log What I see is some Hex value followed by a library name. #00 pc afe0d24c /system/lib/libc.so
Also there is a Stack section 01-01 00:02:57.800: INFO/DEBUG(1600): stack: 01-01 00:02:57.800: INFO/DEBUG(1600):bef2e570 bef2e604 [stack] 01-01 00:02:57.810: INFO/DEBUG(1600):bef2e574 afe0a333 /system/ lib/libc.so
This too gives similar information. I am looking for little more informations rather than Hex values. Like the backtrace feature where the stack hex values is mapped to the function names and function names are visible.
Please provide information how to see the function names in stack rather than Hex values. Is ther any compiler options needs to be updated? Any makefile to be updated to enable backtrace?
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Apr 11, 2010
My android app is getting an "Out of memory" error without a useful stack trace. It occurs after I have repeatedly re-invoked its main logic through a menu interaction, which leads me to believe that there's a memory leak somewhere.
I say that the stack trace isn't useful because it doesn't include references to any of my own code. There are no references to my own code in the logcat output, either.
I'm wondering if any of you can help me figure out where my memory leak might be occurring, given my stack trace and my logcat output.
Here's the stack trace: Code...
Could my error be related to the "Window already focused ..." warnings? If so, how can I find out what is causing these? I know that I could sprinkle my code with lots of calls to Log.v() in order to zero in on where my problem might be occurring, but I'm wondering if there is a better way to get more meaningful information about the cause of my memory leak.
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Jul 7, 2010
Anyone could compile some SIP Stack in C/C++ along with Android source code? Note: i am referring not to compile the Sip Stack with ndk, but compile with all the code of the Android platform.
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Apr 19, 2009
The following is the log from native code.
CODE:.................
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Feb 21, 2012
I have to send access point in my application, i found some example which is related to database. but i am not able to understand it, i am new in Android.
Is there any simple way to set it ?
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Nov 28, 2009
I need to develop an application which scans the wifi access points and also gives their signal strength.I wrote the code for scanning the access points but I dont know what packages to use for measuring the displaying strength.Can anyone please tell me how to display the signal strength, also give me the code for that.
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Sep 4, 2010
I am trying out this code for scanning wifi networks but getting null pointer exception not sure what problem I registered all permission in manifest.
IntentFilter i = new IntentFilter();
i.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
registerReceiver(new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.i(TAG, "opening wifimanager");
WifiManager mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
mWifiManager.getScanResults();
} } ,i);
mWifiManager.startScan();
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Apr 14, 2010
I apologize if this code looks a bit like a mess (considering the length); I figured I'd just include everything that goes on in my program at the moment.
I'm attempting to create a fairly simple Tic Tac Toe app for Android. I've set up my UI nicely so far so that there are a "grid" of TextViews. As a sort of "debug" right now, I have it so that when one clicks on a TextView, it should display the value of buttonId in a message box. Right now, it displays the correct assigned value for the first element I click, but no matter what I click afterwards, it always just displays the first value buttonID had. I attempted to debug it but couldn't exactly find a point where it would pull the old value (to the best of my knowledge, it reassigned the value).
There's a good possibility I'm missing something small, because this is my first Android project (of any note). Can someone help get different values of buttonId to appear or point out the error in my logic? The code...
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May 28, 2010
I've been told that Android OS stores all function calls in a stack. This can lead to many problems and cause the 'hiccups' during runtime, even if a program is functionalized properly, correct?
So the question is, how can we prevent this from happening? The obvious solution is to functionalize less, along with other sensible acts such as refraining from excessively/needlessly creating objects, performing static calls to functions that don't access fields, etc...
Is there another way though? Or can this only be done through careful code writing on the programmers' part? Does the JVM/JIT automatically optimize the bytecode during compile time to account for this?
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Sep 12, 2010
I am writing an android game that involves some c++. I have a fairly repeatable crash that seems to be due to my c++ code
Looking at the page:
http://source.android.com/porting/debugging_native.html#Debug_Scenarios (right at the end)
it says to run the output through the "stack tool" - which I can find no trace of.. nor aproto.
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May 7, 2010
I had some fairly simple code in my app to invoke Edit Contact activity on a known good contact index that worked in Android 1.6 but is broken for me now in Android 2.1 on the Droid. I built a sample activity/app 'EdCon' to show this:
package com.jbh;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
When I run this on my G1 running 1.6 it works as expected i.e. brings up the Edit Contact screen for the known index and then I can hit BACK to return to "Hello World, EdCon". Code...
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Mar 4, 2012
Considering how much Google has done to popularize them, it seems like a glaring oversight that I read about an interesting app on my laptop or desktop, see a link to the bottom of the article, and visit the Market page yet I then have to open up a QR code generator to be able to easily get to that page on my phone. Why doesn't google autogenerate one somewhere on the app page?
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Sep 12, 2010
This person has been texting me none stop for 3 days I've even involved the police who didn't even bother since its a cricket wireless # they can't trace. This person seems obsessed and at times honestly scares me. They've sent over a hundred texts in less than an hour. Pls I've tried googling but come up with year old posts that lead to nothing. Market searches lead to only bad reviews.
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Jul 22, 2009
How to trace the HTTP requests/responses e.g. by using Wireshark? I am using soap web services i want tocheck wheather the soap request from the web service sis going properly.I neee the Xml response from the server but non xml format i am getting how to check this request and response using Wireahark or any other process.
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Jun 16, 2010
I'm currently trying to debug an issue with my application and I wanted to see if my internal proxy is sending the data in the proper order. Is there any way to essentially sniff my proxy pipe?
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Jul 23, 2009
I have a problem with creating a trace file containing logs on my app. I use Debug.startMethodTracing("tracing"); and in my onDestroy() method i stop the methodTracing. Everything is going fine, like my file is created on my phone BUT it is empty, and i don't get why because it worked once and since i can't get it working. Here is the log ive got, and it says that it is writting on the file, so this is acting a bit weird. Code...
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Jul 14, 2010
Does anybody know how can I get the build-in function call trace on Android phone?
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May 21, 2010
I created sdcard and mounted it on my emulator , after closing my app , when i try to pull to copy the files (using command:adb pull /sdcard/calc.trace /tmp)i get this error:"remote object /sdcard/calc.trace does not exist".I am listin gdown the commands in sequence.
1)f:>mksdcard 1024 ./myimage
2)f:>emulator -sdcard ./myimage -avd 1
3)(After running my app and exiting the app)adb pull /sdcard/calc.trace /tmp
In my activity i have start/stop method tracing with fiename calc.trace. i am running windows.
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May 17, 2010
How to trace the Memory Leaks in Android Development? I am working on eclipse IDE to develop the application. i cant find out how to rectify the memory or window Leaks Exceptions? Any Idea.
Mainly the Window Leaked error raises the Illegal Argument Exception? how to rectify both og this.
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Sep 25, 2009
Sometimes in LogCat I'll see Wrote stack trace to '/data/anr/traces.txt'
But when using the DDMS perspective, "File Explorer" View, I can't see anything in the "data" directory, I'm assuming because permission denied. Is there a way (short of rooting my ion device) to read what's in that text file?
Is there perhaps an android app for developers that will show the contents of the file? It would seem there would have to be some way of reading the file without rooting the device, otherwise why does the o.s. write it out? How can I read this file?
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Feb 1, 2010
I am trying to follow the instructions on this page to create a trace file. I can see the file in File Explorer in DDMS and can pull it onto my PC but it is zero bytes long.
Any suggestions as to what I might be doing wrong, please?
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