How to get Android crash logs?

Question

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 lo

Answer 1

Use acra crash reporter for android app..Acra lib

Answer 2

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[]{"kevineyni@gmail.com"});
        i.putExtra(Intent.EXTRA_SUBJECT, "crash report azar");
        String body = "Mail this to kevineyni@gmail.com: " + "\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));

.....

Answer 3

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.

Answer 4

Try Carsh log app from android.

use the link to download app.

Answer 5

This is from http://www.herongyang.com/Android/Debug-adb-logcat-Command-Debugging.html

You can use adb:

adb logcat AndroidRuntime:E *:S

Answer 6

Here is a solution that can help you dump all the logs onto a text file

adb logcat -d > logs.txt