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How to debug when using an android ion emulator

I created an app using ionic:

ionic start MyFirstApp blank
cd MyFirstApp
ionic serve
ionic platform add android
ionic build android
ionic emulate android

Everything is successful except for the emulator step. The emulator loads, but I get "Sorry, MyFirstApp has stopped." Everything is completely new right out of the box, no code changes.

What's next? How do I debug errors?

EDIT This is the output displayed when called ionic build android

:

    C:\Users\Colin\Documents\Ionic\MyFirstApp>ionic build android
add to body class: platform-android
Running command: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\cordova\build.bat
Buildfile: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\build.xml

-set-mode-check:

-set-debug-files:

-check-env:
 [checkenv] Android SDK Tools Revision 23.0.2
 [checkenv] Installed at C:\Program Files\Eclipse\adt-bundle-windows-x86_64-20140702\sdk

-setup:
     [echo] Project Name: MyFirstApp
  [gettype] Project Type: Application

-set-debug-mode:

-debug-obfuscation-check:

-pre-build:

-build-setup:
[getbuildtools] Using latest Build Tools: 20.0.0
     [echo] Resolving Build Target for MyFirstApp...
[gettarget] Project Target:   Android 4.4.2
[gettarget] API level:        19
     [echo] ----------
     [echo] Creating output directories if needed...
     [echo] ----------
     [echo] Resolving Dependencies for MyFirstApp...
[dependency] Library dependencies:
[dependency]
[dependency] ------------------
[dependency] Ordered libraries:
[dependency]
[dependency] ------------------
     [echo] ----------
     [echo] Building Libraries with 'debug'...

nodeps:

-set-mode-check:

-set-debug-files:

-check-env:
 [checkenv] Android SDK Tools Revision 23.0.2
 [checkenv] Installed at C:\Program Files\Eclipse\adt-bundle-windows-x86_64-20140702\sdk

-setup:
     [echo] Project Name: MyFirstApp
  [gettype] Project Type: Android Library

-set-debug-mode:

-debug-obfuscation-check:

-pre-build:

-build-setup:
[getbuildtools] Using latest Build Tools: 20.0.0
     [echo] Resolving Build Target for MyFirstApp...
[gettarget] Project Target:   Android 4.4.2
[gettarget] API level:        19
     [echo] ----------
     [echo] Creating output directories if needed...
     [echo] ----------
     [echo] Resolving Dependencies for MyFirstApp...
[dependency] Library dependencies:
[dependency] No Libraries
[dependency]
[dependency] ------------------

-code-gen:
[mergemanifest] Found Deleted Target File
[mergemanifest] Merging AndroidManifest files into one.
[mergemanifest] Manifest merger disabled. Using project manifest only.
     [echo] Handling aidl files...
     [aidl] No AIDL files to compile.
     [echo] ----------
     [echo] Handling RenderScript files...
     [echo] ----------
     [echo] Handling Resources...
     [aapt] Found new input file
     [aapt] Generating resource IDs...
     [echo] ----------
     [echo] Handling BuildConfig class...
[buildconfig] No need to generate new BuildConfig.

-pre-compile:

-compile:
     [echo] Creating library output jar file...

-post-compile:

-obfuscate:

-dex:
     [echo] Library project: do not convert bytecode...

-crunch:
   [crunch] Crunching PNG Files in source dir: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\res
   [crunch] To destination dir: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build\res
   [crunch] Crunched 0 PNG files to update cache

-package-resources:
     [echo] Library project: do not package resources...

-package:
     [echo] Library project: do not package apk...

-post-package:

-do-debug:
     [echo] Library project: do not create apk...
[propertyfile] Updating property file: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build\build.prop
[propertyfile] Updating property file: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build\build.prop
[propertyfile] Updating property file: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build\build.prop
[propertyfile] Updating property file: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build\build.prop

-post-build:

debug:

-code-gen:
[mergemanifest] Found Deleted Target File
[mergemanifest] Merging AndroidManifest files into one.
[mergemanifest] Manifest merger disabled. Using project manifest only.
     [echo] Handling aidl files...
     [aidl] No AIDL files to compile.
     [echo] ----------
     [echo] Handling RenderScript files...
     [echo] ----------
     [echo] Handling Resources...
     [aapt] Found Deleted Target File
     [aapt] Generating resource IDs...
     [echo] ----------
     [echo] Handling BuildConfig class...
[buildconfig] No need to generate new BuildConfig.

-pre-compile:
     [echo] Set jars path to: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build\classes.jar

-compile:
    [javac] Compiling 2 source files to C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\classes

-post-compile:

-obfuscate:

-dex:
      [dex] input: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\classes
      [dex] input: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build\classes.jar
      [dex] Using Pre-Dexed classes-3a52ec06bbf9dc987d551c9695e3393a.jar <- C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build\classes.jar
      [dex] Found Deleted Target File
      [dex] Converting compiled files and external libraries into C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\classes.dex...
       [dx] Merged dex A (12 defs/8.7KiB) with dex B (209 defs/317.1KiB). Result is 221 defs/396.2KiB. Took 0.2s

-crunch:
   [crunch] Crunching PNG Files in source dir: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\res
   [crunch] To destination dir: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\res
   [crunch] Crunched 0 PNG files to update cache

-package-resources:
     [aapt] Found Deleted Target File
     [aapt] Creating full resource package...

-package:
[apkbuilder] Found Deleted Target File
[apkbuilder] Creating MyFirstApp-debug-unaligned.apk and signing it with a debug key...

-post-package:

-do-debug:
 [zipalign] Running zip align on final apk...
     [echo] Debug Package: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\MyFirstApp-debug.apk
[propertyfile] Updating property file: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\build.prop
[propertyfile] Updating property file: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\build.prop
[propertyfile] Updating property file: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\build.prop
[propertyfile] Updating property file: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\build.prop

-post-build:
     [move] Moving 1 file to C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build
     [move] Moving 1 file to C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\CordovaLib\ant-build

debug:

BUILD SUCCESSFUL
Total time: 4 seconds
Using apk: C:\Users\Colin\Documents\Ionic\MyFirstApp\platforms\android\ant-build\MyFirstApp-debug-unaligned.apk

EDIT 2 . This is the resultandroid list avd 

Available Android Virtual Devices:
    Name: Nexus7
  Device: Nexus 7 (Google)
    Path: C:\Users\Colin\.android\avd\Nexus7.avd
  Target: Android 4.4W (API level 20)
 Tag/ABI: android-wear/armeabi-v7a
    Skin: WVGA800
+3


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2 answers


Please make sure you have created the correct avd configuration for the emulator.

enter android list avd

and see the result. What is the first avd? If it shows an older API level (like 7)

old api

API requires level 9 or higher, API level 15, and high priority. You cannot use API 20 Android Wear AVD as it is only for testing wear devices.



You can remove the existing avd with android delete avd -n Name

(replace Name

with yours).

create one with android create avd --name test15 --target android-15 --abi x86

make sure it android list avd

shows your avd is first.

  • I followed the same steps, I am using windows, my output ionic build android

    is similar to yours; I was able to get it ionic emulate android

    working with API-15, see below:

    ionic emulate android

+4


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In my opinion, it is much easier / better to decide to use chrome: // test the tool on chrome.



  • Run the app on your Android using

    ionic running android

  • Open Chrome and go to: chrome: // inspect - a list of connected devices will be displayed.

  • Inspect the application using chrome dev tools as if you were inspecting any other web page.

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