StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POEclipse logcat debugging
text
Body
copied!<p>I have a beginner question, I want to debug my app and i don't know how to use the Logcat properly.</p> <p>Right now, I am getting this error and i don't know what it means.</p> <p>How can i use this information? Is there a tutorial somewhere i can watch?</p> <p>Thanks for your help.</p> <pre><code>09-23 11:27:55.968: E/AndroidRuntime(807): FATAL EXCEPTION: main 09-23 11:27:55.968: E/AndroidRuntime(807): java.lang.NullPointerException 09-23 11:27:55.968: E/AndroidRuntime(807): at com.uniqueapps.runner.Start.onClick(Start.java:49) 09-23 11:27:55.968: E/AndroidRuntime(807): at android.view.View.performClick(View.java:4240) 09-23 11:27:55.968: E/AndroidRuntime(807): at android.view.View$PerformClick.run(View.java:17721) 09-23 11:27:55.968: E/AndroidRuntime(807): at android.os.Handler.handleCallback(Handler.java:730) 09-23 11:27:55.968: E/AndroidRuntime(807): at android.os.Handler.dispatchMessage(Handler.java:92) 09-23 11:27:55.968: E/AndroidRuntime(807): at android.os.Looper.loop(Looper.java:137) 09-23 11:27:55.968: E/AndroidRuntime(807): at android.app.ActivityThread.main(ActivityThread.java:5103) 09-23 11:27:55.968: E/AndroidRuntime(807): at java.lang.reflect.Method.invokeNative(Native Method) 09-23 11:27:55.968: E/AndroidRuntime(807): at java.lang.reflect.Method.invoke(Method.java:525) 09-23 11:27:55.968: E/AndroidRuntime(807): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 09-23 11:27:55.968: E/AndroidRuntime(807): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 09-23 11:27:55.968: E/AndroidRuntime(807): at dalvik.system.NativeStart.main(Native Method) 09-23 11:27:59.528: I/Process(807): Sending signal. PID: 807 SIG: 9 09-23 11:28:01.108: D/gralloc_goldfish(877): Emulator without GPU emulation detected. 09-23 11:54:55.318: D/gralloc_goldfish(937): Emulator without GPU emulation detected. 09-23 11:54:57.887: I/Choreographer(937): Skipped 35 frames! The application may be doing too much work on its main thread. 09-23 11:55:03.118: D/dalvikvm(937): GC_FOR_ALLOC freed 89K, 7% free 2928K/3136K, paused 39ms, total 72ms 09-23 11:55:05.858: D/AndroidRuntime(937): Shutting down VM 09-23 11:55:05.858: W/dalvikvm(937): threadid=1: thread exiting with uncaught exception (group=0x414c4700) 09-23 11:55:05.868: E/AndroidRuntime(937): FATAL EXCEPTION: main 09-23 11:55:05.868: E/AndroidRuntime(937): java.lang.NullPointerException 09-23 11:55:05.868: E/AndroidRuntime(937): at com.uniqueapps.runner.Start.onClick(Start.java:49) 09-23 11:55:05.868: E/AndroidRuntime(937): at android.view.View.performClick(View.java:4240) 09-23 11:55:05.868: E/AndroidRuntime(937): at android.view.View$PerformClick.run(View.java:17721) 09-23 11:55:05.868: E/AndroidRuntime(937): at android.os.Handler.handleCallback(Handler.java:730) 09-23 11:55:05.868: E/AndroidRuntime(937): at android.os.Handler.dispatchMessage(Handler.java:92) 09-23 11:55:05.868: E/AndroidRuntime(937): at android.os.Looper.loop(Looper.java:137) 09-23 11:55:05.868: E/AndroidRuntime(937): at android.app.ActivityThread.main(ActivityThread.java:5103) 09-23 11:55:05.868: E/AndroidRuntime(937): at java.lang.reflect.Method.invokeNative(Native Method) 09-23 11:55:05.868: E/AndroidRuntime(937): at java.lang.reflect.Method.invoke(Method.java:525) 09-23 11:55:05.868: E/AndroidRuntime(937): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 09-23 11:55:05.868: E/AndroidRuntime(937): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 09-23 11:55:05.868: E/AndroidRuntime(937): at dalvik.system.NativeStart.main(Native Method) 09-23 11:55:09.657: D/gralloc_goldfish(961): Emulator without GPU emulation detected. 09-23 12:04:20.418: D/gralloc_goldfish(1006): Emulator without GPU emulation detected. 09-23 12:04:27.118: D/dalvikvm(1006): GC_FOR_ALLOC freed 96K, 7% free 2919K/3136K, paused 40ms, total 72ms 09-23 12:04:30.337: D/AndroidRuntime(1006): Shutting down VM 09-23 12:04:30.357: W/dalvikvm(1006): threadid=1: thread exiting with uncaught exception (group=0x414c4700) 09-23 12:04:30.397: E/AndroidRuntime(1006): FATAL EXCEPTION: main 09-23 12:04:30.397: E/AndroidRuntime(1006): java.lang.NullPointerException 09-23 12:04:30.397: E/AndroidRuntime(1006): at com.uniqueapps.runner.Start.onClick(Start.java:49) 09-23 12:04:30.397: E/AndroidRuntime(1006): at android.view.View.performClick(View.java:4240) 09-23 12:04:30.397: E/AndroidRuntime(1006): at android.view.View$PerformClick.run(View.java:17721) 09-23 12:04:30.397: E/AndroidRuntime(1006): at android.os.Handler.handleCallback(Handler.java:730) 09-23 12:04:30.397: E/AndroidRuntime(1006): at android.os.Handler.dispatchMessage(Handler.java:92) 09-23 12:04:30.397: E/AndroidRuntime(1006): at android.os.Looper.loop(Looper.java:137) 09-23 12:04:30.397: E/AndroidRuntime(1006): at android.app.ActivityThread.main(ActivityThread.java:5103) 09-23 12:04:30.397: E/AndroidRuntime(1006): at java.lang.reflect.Method.invokeNative(Native Method) 09-23 12:04:30.397: E/AndroidRuntime(1006): at java.lang.reflect.Method.invoke(Method.java:525) 09-23 12:04:30.397: E/AndroidRuntime(1006): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 09-23 12:04:30.397: E/AndroidRuntime(1006): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 09-23 12:04:30.397: E/AndroidRuntime(1006): at dalvik.system.NativeStart.main(Native Method) 09-23 12:04:33.918: D/gralloc_goldfish(1030): Emulator without GPU emulation detected. </code></pre>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload