[android] The application has stopped unexpectedly: How to Debug?

Please note, unlike many other questions having the subject title "application has stopped unexpectedly", I am not asking for troubleshooting a particular problem.

Rather, I am asking for an outline of the best strategy for an Android/Eclipse/Java rookie to tackle this formidable task of digesting huge amounts of information in order to develop (and debug!) a simple Android application.

In my case, I took the sample skeleton app from the SDK, modified it slightly and what did I get the moment I try to run it?

The application (process.com.example.android.skeletonapp) has stopped unexpectedly. Please try again.

OK, so I know that I have to look LogCat. It's full of timestamped lines staring at me... What do I do now? What do I need to look for?

Is there a way to single-step the program, to find the statement that makes the app crash? (I thought Java programs never crash, but apparently I was mistaken)

How do I place a breakpoint?

Can you recommend an Android debug tutorial online, other than this one?

This question is related to android debugging android-emulator adb logcat

The answer is


If you use the Logcat display inside the 'debug' perspective in Eclipse the lines are colour-coded. It's pretty easy to find what made your app crash because it's usually in red.

The Java (or Dalvik) virtual machine should never crash, but if your program throws an exception and does not catch it the VM will terminate your program, which is the 'crash' you are seeing.


Check whether your app has the needed permissions.I was also getting the same error and I checked the logcat debug log which showed this:

04-15 13:38:25.387: E/AndroidRuntime(694): java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.CALL dat=tel:555-555-5555 cmp=com.android.phone/.OutgoingCallBroadcaster } from ProcessRecord{44068640 694:rahulserver.test/10055} (pid=694, uid=10055) requires android.permission.CALL_PHONE

I then gave the needed permission in my android-manifest which worked for me.


Filter your log to just Error and look for FATAL EXCEPTION


  1. From the Home screen, press the Menu key.
  2. List item
  3. Touch Settings.
  4. Touch Applications.
  5. Touch Manage Applications.
  6. Touch All.
  7. Select the application that is having issues.
  8. Touch Clear data and Clear cache if they are available. This resets the app as if it was new, and may delete personal data stored in the app.

Examples related to android

Under what circumstances can I call findViewById with an Options Menu / Action Bar item? How to implement a simple scenario the OO way My eclipse won't open, i download the bundle pack it keeps saying error log getting " (1) no such column: _id10 " error java doesn't run if structure inside of onclick listener Cannot retrieve string(s) from preferences (settings) strange error in my Animation Drawable how to put image in a bundle and pass it to another activity FragmentActivity to Fragment A failure occurred while executing com.android.build.gradle.internal.tasks

Examples related to debugging

How do I enable logging for Spring Security? How to run or debug php on Visual Studio Code (VSCode) How do you debug React Native? How do I debug "Error: spawn ENOENT" on node.js? How can I inspect the file system of a failed `docker build`? Swift: print() vs println() vs NSLog() JavaScript console.log causes error: "Synchronous XMLHttpRequest on the main thread is deprecated..." How to debug Spring Boot application with Eclipse? Unfortunately MyApp has stopped. How can I solve this? 500 internal server error, how to debug

Examples related to android-emulator

flutter run: No connected devices How to remove the Flutter debug banner? Android Studio AVD - Emulator: Process finished with exit code 1 Android Studio Emulator and "Process finished with exit code 0" Run react-native on android emulator ERROR Android emulator gets killed Error while waiting for device: Time out after 300seconds waiting for emulator to come online Unfortunately Launcher3 has stopped working error in android studio? updating Google play services in Emulator Android Studio emulator does not come with Play Store for API 23

Examples related to adb

ADB server version (36) doesn't match this client (39) {Not using Genymotion} ADB device list is empty "unable to locate adb" using Android Studio Run react-native on android emulator Solving "adb server version doesn't match this client" error Adb install failure: INSTALL_CANCELED_BY_USER Session 'app': Error Installing APK Where is adb.exe in windows 10 located? How to debug in Android Studio using adb over WiFi Set adb vendor keys

Examples related to logcat

strange error in my Animation Drawable Android Studio - ADB Error - "...device unauthorized. Please check the confirmation dialog on your device." Couldn't load memtrack module Logcat Error sendUserActionEvent() is null Android studio logcat nothing to show Restore LogCat window within Android Studio error opening trace file: No such file or directory (2) Android Log.v(), Log.d(), Log.i(), Log.w(), Log.e() - When to use each one? How to filter Android logcat by application? Filter output in logcat by tagname