I have looked through many different solutions for this problem but I cannot find one that is working for me.
My logcat has randomly stopped working properly. It seems like it has some filters set on it, but I have made sure that no filters is on and that it is looking for errors in my project. My app will crash but nothing relevant will appear in the Logcat.
I have not messed with the Gradle at all so I really don't know why it isn't working.
Here is a screenshot of my Logcat Error's after my app crashes:
I have also checked the Verbose section to see if it just wasn't being recorded in Error's, but there is nothing related to a crash anywhere.
Check your search, I think you didn't clear it.
Related
I'm working through a few Android applications and whenever I try to filter out the LogCat to find why my app is not running, nothing shows up anymore.
I've tried going to DDMS, resetting the adb and restarting Eclipse. I've also tried to make sure my Emulator is selected from the list of devices, although my app does not seem to be present under the Emulator (com.android.myapp), so not sure if that's the issue.
I also do realize that this question has been asked many times but I can't seem to find a fix using other solutions.
Any help would be greatly appreciated, thank you.
Also let me know if I need to provide any extra info.
Unfortunately appname has stopped, while I am using main activity for both androidmanifest.xml file and for the Java file, so there is no chance of using different activities, but still i am getting this message,like:
Unfortunately LunchList has Stopped.
I am getting this when I am making simple Android app with SQLite database, RSS Reader and much more, but the thing is my codes are working fine because not showing me an error of coding and I am able to run and debug my apps. I am also getting problem with option menus like sometimes menus are not coming, sometimes they are coming but not responding.
but the thing is my codes are working fine because not showing me an error of coding
You mean it's compiling? That's not the same as working. Clearly your code isn't working, otherwise it wouldn't be crashing like this.
You should look in your application's log file (e.g. with logcat). I'm confident it will show you an exception, with a stack trace. That should give you a good idea of what's going wrong, and where it's going wrong. If you find out what's going wrong but don't understand why it's going wrong, that's a reasonable Stack Overflow question in itself, but the first thing is to get that initial diagnostic information.
Note that if you run your app in the debugger, I'd expect that if this error occurs, the debugger should stop to show you where the problem is. (I've never built an Android app, so I can't swear that's the case, but it's a reasonable expectation.)
When you encounter a FC ( Force Close ), You should monitor your application. In Eclipse open the DDMS view and monitor the application with logcat. and see what causes the problem!
Ive got a strange issue that has me beating my head into a brick wall. In my android app I have a method that checks the mobile state and depending on the outcome pulls an image from on line. I started to receive java.lang.NullPointerException in the developer console. It was being caused by there being no mobile state to check. Simple enough and was fixed with an if statement.
This method was in several activity's and the fix was applied to all. For some reason I am still receiving errors in the console but only for one of the activity's. The error message is the same as last time, and Ive been through the code a million times it shouldn't be doing it has the same fix as the other activity's. Also I cannot re create the error, which is making it impossible to fix. As far as I can see its not broke.
Any suggestions of what to do in this situation? Would a try and catch be appropriate?
Try cleaning (in eclipse, Project -> Clean...) your project. I find this sometimes fixes issues with the app seamingly not being updated when changes are made to the source...whether the source being a resource or source code.
Perhaps check if there are any contexts not clearly defined. Or if you simply wrote one of "(this)", try being more explicit: "(mainactivity.this)"
I am very new to Android and Eclipse. I find very difficult to fix up the errors in Eclipse. Android emulator keeps crashing, even for few lines of codes. Is there any tutorial or video tutorial available, that can help me to spot errors on looking at the error log.
Here is a basic tutorial that will get you familiar with Android Debugging and Logcat : Debugging in Android using Eclipse . Also you can set breakpoints and debug as you would for any other Eclipse project. The logging of errors, its different tough, using Logcat.
Yes, you can open DDMS perspective and LogCat window to view logs and can see what is the original issue.
When it crashes, check the LogCat. It contains the stack trace with the exception, and is often enough to see what went wrong and fix it. It can be browsed directly in Eclipse (don't know exactly how, I'm using IntelliJ).
Also, you can use normal debugging on your Android project, exactly the same way you would on a Java (non-Android) project.
Today I was reading up on debugging and I came across a post in stackoverflow saying that the debugger itself in eclipse does not tell alot of useful information and most information lies in the LogCat ?
I've done a screenshot of the LogCat output and saw a colorful output which is dazzling. I went ahead with the most obvious danger color (red) and saw that at the end of the output it says error caused by NullpointerException in fillData() and onCreate().
My question is:
Is that an indication of the bug in my code (as mine crashes at startup) ? Is the bug Nullpointerexception ? Is this the right way of finding out immediate bugs in code ?
Is the red color output of Logcat the main portion to zoom in to look for bug problems?
Thank you ! I think this post wud be useful for many noob android coders as there isn't many resources out there teaching how to use the debugger properly :(
To view all application logs you should check "LogCat" in "DDMS".
In LogCat you can filter logs by Log Level (V=Verbose, D=Debug, I=Info, W=Warning and E=Error).
You can check application crashes by filtering by Error - this way you can check where the problem is happening (by viewing the stacktrace).
However, if you want to perform step by step debug, add breakpoints and run the application in debug mode. Then open perspective "Debug" and you'll be able to debug line by line.