net::ERR_FILE_NOT_FOUND file:///android_asset/www/index.html was not found

Question

I have a cordova app (that i'm building for Android) that I have signed using the keytools on the command line and installed this onto my Android device.

Whenever I open the app on my phone I get the following error:

Application Error
net::ERR_FILE_NOT_FOUND (file:///android_asset/www/index.html)

My phone has an internet connection so there is an active mobile internet connection - can anyone help in debugging the problem?

I have come across a number of fixes that relate to moving remote assets however I cannot see in my app where I have any links to a remote URL.

Is there a way I can do a 'stack-trace' to allow me to pin-point the exact point this Application Error is being thrown within my app?

Any tips at all would be appreciated

-- update -- Here is the adb log that is generated when in the emulator

For anyone else that this may help I used the following to output the emulator log to a file:- (the double >> is needed to append data to the file)

adb -e logcat >> emulator.log

https://gist.github.com/anonymous/e53abb7eb089950ac4e5

-- update -- My AndroidManifest.xml file looks like the following:

<?xml version='1.0' encoding='utf-8'?>
<manifest android:hardwareAccelerated="true" android:versionCode="1" android:versionName="0.0.1" package="com.myapp" xmlns:android="http://schemas.android.com/apk/res/android">
<supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:resizeable="true" android:smallScreens="true" android:xlargeScreens="true" />
<uses-permission android:name="android.permission.INTERNET" />
<application android:hardwareAccelerated="true" android:icon="@drawable/icon" android:label="@string/app_name" android:supportsRtl="true">
    <activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale" android:label="@string/activity_name" android:launchMode="singleTop" android:name="MainActivity" android:theme="@android:style/Theme.Black.NoTitleBar" android:windowSoftInputMode="adjustResize">
        <intent-filter android:label="@string/launcher_name">
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>
<uses-sdk android:minSdkVersion="10" android:targetSdkVersion="21" />
</manifest>

-- update -- Within my platforms 'android' folder is a 'assets' folder - this has the following structure:

www/
_where-is-www.txt
  www/css
  www/img
  www/js
  www/res
  www/app.html
  www/cordova.js
  www/cordova_plugins.js
  www/index.php

There doesn't appear to be an index.html - even though the cordova setup states an index.html file... I cannot understand why it would be doing this.

NOTE : I am creating a cordova app, adding a Android platform, then copying my existing www folder from another directory of the existing app (that has been developed and released to the Play store so works ok) - then finally doing the build. Not sure why index.html should be showing... any ideas??

Solution

you should run cordova build android before cordova run android or make it simple by running cordova build android && cordova run android --device
PS: don't forget sudo if you work on mac