If your app is being downloaded by other people and crashing on remote devices, you may want to look into an Android error reporting library (referenced in this SO post). If it's just on your own local device, you can use LogCat.
Even if the device wasn't connected to a host machine when the crash occurred, connecting the device and issuing an adb logcat
command will download the entire logcat history (at least to the extent that it is buffered which is usually a loooot of log data, it's just not infinite). Do either of those options answer your question? If not can you attempt to clarify what you're looking for a bit more?
You can try this from the console:
adb logcat --buffer=crash
More info on this option:
adb logcat --help
...
-b <buffer>, --buffer=<buffer> Request alternate ring buffer, 'main',
'system', 'radio', 'events', 'crash', 'default' or 'all'.
Multiple -b parameters or comma separated list of buffers are
allowed. Buffers interleaved. Default -b main,system,crash.
Here is a solution that can help you dump all the logs onto a text file
adb logcat -d > logs.txt
You can also use library crashcatcher
This is from http://www.herongyang.com/Android/Debug-adb-logcat-Command-Debugging.html
You can use adb:
adb logcat AndroidRuntime:E *:S
If you are looking for a basic crash reporting tool, try crashlytics.
If you want a more advanced reporting tool, Checkout Gryphonet. It logs all the crashes occured along with the exact line of code that caused the crash along with automated markers that show you the steps the user took prior to the crash and more.
Good luck!
Base on this POST, use this class as replacement of "TopExceptionHandler"
class TopExceptionHandler implements Thread.UncaughtExceptionHandler {
private Thread.UncaughtExceptionHandler defaultUEH;
private Activity app = null;
private String line;
public TopExceptionHandler(Activity app) {
this.defaultUEH = Thread.getDefaultUncaughtExceptionHandler();
this.app = app;
}
public void uncaughtException(Thread t, Throwable e) {
StackTraceElement[] arr = e.getStackTrace();
String report = e.toString()+"\n\n";
report += "--------- Stack trace ---------\n\n";
for (int i=0; i<arr.length; i++) {
report += " "+arr[i].toString()+"\n";
}
report += "-------------------------------\n\n";
// If the exception was thrown in a background thread inside
// AsyncTask, then the actual exception can be found with getCause
report += "--------- Cause ---------\n\n";
Throwable cause = e.getCause();
if(cause != null) {
report += cause.toString() + "\n\n";
arr = cause.getStackTrace();
for (int i=0; i<arr.length; i++) {
report += " "+arr[i].toString()+"\n";
}
}
report += "-------------------------------\n\n";
try {
FileOutputStream trace = app.openFileOutput("stack.trace",
Context.MODE_PRIVATE);
trace.write(report.getBytes());
trace.close();
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("message/rfc822");
i.putExtra(Intent.EXTRA_EMAIL , new String[]{"[email protected]"});
i.putExtra(Intent.EXTRA_SUBJECT, "crash report azar");
String body = "Mail this to [email protected]: " + "\n" + trace + "\n";
i.putExtra(Intent.EXTRA_TEXT , body);
try {
startActivity(Intent.createChooser(i, "Send mail..."));
} catch (android.content.ActivityNotFoundException ex) {
// Toast.makeText(MyActivity.this, "There are no email clients installed.", Toast.LENGTH_SHORT).show();
}
// ReaderScopeActivity.this.startActivity(Intent.createChooser(sendIntent, "Title:"));
//ReaderScopeActivity.this.deleteFile("stack.trace");
} catch(IOException ioe) {
// ...
}
defaultUEH.uncaughtException(t, e);
}
private void startActivity(Intent chooser) {
}
}
.....
in same java class file (Activity) .....
Public class MainActivity.....
.....
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Thread.setDefaultUncaughtExceptionHandler(new TopExceptionHandler(this));
.....
Here is another solution for Crash Log.
Android market has tool named "Crash Collector"
check following link for more information
http://kpbird.blogspot.com/2011/08/android-application-crash-logs.html
Try Carsh log app from android.
use the link to download app.
I have created this library to solve all your problems. Crash Reporter is a handy tool to capture all your crashes and log them in device locally
Just add this dependency and you're good to go.
compile 'com.balsikandar.android:crashreporter:1.0.1'
Find all your crashes in device locally and fix them at your convenience. Crashes are saved using date and time format easy to track. Plus it also provides API for capture Logged Exceptions using below method.
CrashRepoter.logException(Exception e)
1) Plug in Phone through USB (w/ Developer Debugging options enabled)
2) Open Terminal and Navigate to your Android SDK (for Mac):
cd ~/Library/Android/sdk/platform-tools
3) Logcat from that directory (in your terminal) to generate a constant flow of logs (for Mac):
./adb logcat
4) Open your app that crashes to generate crash logs
5) Ctrl+C to stop terminal and look for the logs associated with the app that crashes. It may say something like the following:
AndroidRuntime: FATAL EXCEPTION: main
You can use ACRA from this. Including this library to your projects and configuring it, you could receive (into your email or gdocs) their crash reports. Sorry for my bad English.
You can use Apphance. This is a cross-platform service (now mainly Android, iOS with other platforms on their way) which allows to debug remotely any mobile device (Android, iOS now - others under development). It's much more than just a crashlog, in fact it is much more: logging, reporting of problems by testers, crashlogs. It takes about 5 minutes to integrate. Currently you can request for access to closed beta.
Disclaimer: I am CTO of Polidea, a company behind Apphance and co-creator of it.
Update: Apphance is no longer closed beta! Update 2: Apphance is available as part of http://applause.com offering
If you're just looking for the crash log while your phone is connected to the computer, use the DDMS view in Eclipse and the report is right there in LogCat within DDMS when your app crashes while debugging.
If you're using Eclipse, make sure you use debug and not run. Make sure you are in the debug perspective (top right) You may have to hit 'Resume' (F8) a few times for the log to print. The crash log will be in the Logcat window at the bottom- double click for fullscreen and make sure you scroll to the bottom. You'll see red text for errors, the crash trace will be something like
09-04 21:35:15.228: ERROR/AndroidRuntime(778): Uncaught handler: thread main exiting due to uncaught exception
09-04 21:35:15.397: ERROR/AndroidRuntime(778): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dazlious.android.helloworld/com.dazlious.android.helloworld.main}: java.lang.ArrayIndexOutOfBoundsException
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2268)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.app.ActivityThread.access$1800(ActivityThread.java:112)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.os.Handler.dispatchMessage(Handler.java:99)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.os.Looper.loop(Looper.java:123)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.app.ActivityThread.main(ActivityThread.java:3948)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at java.lang.reflect.Method.invokeNative(Native Method)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at java.lang.reflect.Method.invoke(Method.java:521)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at dalvik.system.NativeStart.main(Native Method)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): Caused by: java.lang.ArrayIndexOutOfBoundsException
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at com.example.android.helloworld.main.onCreate(main.java:13)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2231)
09-04 21:35:15.397: ERROR/AndroidRuntime(778): ... 11 more
The important parts for this one are
09-04 21:35:15.397: ERROR/AndroidRuntime(778): Caused by: java.lang.ArrayIndexOutOfBoundsException
09-04 21:35:15.397: ERROR/AndroidRuntime(778): at com.example.android.helloworld.main.onCreate(main.java:13)
those tell us it was an array out of bounds exception on on line 13 of main.java in the onCrate method.
Use acra crash reporter for android app..Acra lib
The way to do this is to implement the Thread.UncaughtExceptionHandler
interface and pass it to Thread.setDefaultUncaughtExceptionHandler()
at the beginning of your Activity's onCreate()
. Here is the implementation class TopExceptionHandler
.
public class TopExceptionHandler implements Thread.UncaughtExceptionHandler {
private Thread.UncaughtExceptionHandler defaultUEH;
private Activity app = null;
public TopExceptionHandler(Activity app) {
this.defaultUEH = Thread.getDefaultUncaughtExceptionHandler();
this.app = app;
}
public void uncaughtException(Thread t, Throwable e) {
StackTraceElement[] arr = e.getStackTrace();
String report = e.toString()+"\n\n";
report += "--------- Stack trace ---------\n\n";
for (int i=0; i<arr.length; i++) {
report += " "+arr[i].toString()+"\n";
}
report += "-------------------------------\n\n";
// If the exception was thrown in a background thread inside
// AsyncTask, then the actual exception can be found with getCause
report += "--------- Cause ---------\n\n";
Throwable cause = e.getCause();
if(cause != null) {
report += cause.toString() + "\n\n";
arr = cause.getStackTrace();
for (int i=0; i<arr.length; i++) {
report += " "+arr[i].toString()+"\n";
}
}
report += "-------------------------------\n\n";
try {
FileOutputStream trace = app.openFileOutput("stack.trace",
Context.MODE_PRIVATE);
trace.write(report.getBytes());
trace.close();
} catch(IOException ioe) {
// ...
}
defaultUEH.uncaughtException(t, e);
}
}
Note We let the Android framework's defaultUEH to handle it.
At the top of your Activity register an instance of above class like this:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Thread.setDefaultUncaughtExceptionHandler(new TopExceptionHandler(this));
...
This handler saves the trace in a file. When ReaderScope
restarts next time, it detects the file and prompts the user if he/she wants to email it to the developer.
To Email the Stack Trace, execute following code to pack it in an email.
try {
BufferedReader reader = new BufferedReader(
new InputStreamReader(ReaderScopeActivity.this.openFileInput("stack.trace")));
while((line = reader.readLine()) != null) {
trace += line+"\n";
}
} catch(FileNotFoundException fnfe) {
// ...
} catch(IOException ioe) {
// ...
}
Intent sendIntent = new Intent(Intent.ACTION_SEND);
String subject = "Error report";
String body = "Mail this to [email protected]: " + "\n" + trace + "\n";
sendIntent.putExtra(Intent.EXTRA_EMAIL, new String[] {"[email protected]"});
sendIntent.putExtra(Intent.EXTRA_TEXT, body);
sendIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
sendIntent.setType("message/rfc822");
ReaderScopeActivity.this.startActivity(Intent.createChooser(sendIntent, "Title:"));
ReaderScopeActivity.this.deleteFile("stack.trace");
Or you can also use ACRA Error Reporting System.Just Include the ACRA.jar in your project libs and use the below code snippet before your launcher activity class declaration
@ReportsCrashes(formKey = "", mailTo = "[email protected];[email protected]", mode = ReportingInteractionMode.SILENT)
or You can try this from console:-
adb logcat -b crash
Source: Stackoverflow.com