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Using imgcache.js with Cordova/Phonegap

javascript

You will need to include the cordova.js script in the html files where you want to use imgcache.js - see the examples folder.

imgcache.js should be initialised and used after the deviceready event has been fired. For instance if the code calling imgcache.js is within a function called yourCallbackFunction :

document.addEventListener("deviceready", yourCallbackFunction, false);

Configuration

This section lists the configuration needed to make imgcache.js work with Cordova/Phonegap. This configuration takes place in the config.xml file of your Cordova project.

See config.xml at the root of this project as an example.

Features

Cordova 3.x

imgcache.js requires the following Cordova features/plugins:

For each of these plugins you will be required to define the corresponding package for the OS you target. Here is a default configuration for both iOS and Android :

<feature name="Device">
	<param name="ios-package" value="CDVDevice" />
	<param name="android-package" value="org.apache.cordova.device.Device" />
</feature>
<feature name="File">
	<param name="ios-package" value="CDVFile" />
	<param name="android-package" value="org.apache.cordova.file.FileUtils" />
</feature>
<feature name="FileTransfer">
	<param name="ios-package" value="CDVFileTransfer" />
	<param name="android-package" value="org.apache.cordova.filetransfer.FileTransfer" />
</feature>

Cordova 2.x

Features need to be added this way:

<feature name="http://api.phonegap.com/1.0/file"/>
<feature name="http://api.phonegap.com/1.0/device"/>
<feature name="http://api.phonegap.com/1.0/network"/>

Phonegap Build

For Phonegap Build you also need to list all core plugins used (= each feature):

<gap:plugin name="org.apache.cordova.file" />
<gap:plugin name="org.apache.cordova.device" />
<gap:plugin name="org.apache.cordova.file-transfer" />

Access origin

In order to cache remote images via http it is important to allow access to those domains. This can be setup via a whitelisting <access> element in your config.xml file.

If you only want to do tests you can allow access to all domains to avoid this kind of issues:

<access origin="*" />

In order to avoid possible security issues, always limit the allowed domains list whenever possible.

For more information about this access origin configuration see Whitelist Guide.