phonegap-android-plugin-js-example

function Cache() { }

Cache.prototype.getCachedPathForURI = function(uri, success, fail) {
    return PhoneGap.execAsync(function(args) {
        success(uri, args.file);
    }, function(args) {
        fail(uri, args.message);
    }, 'com.example.URLCache', 'getCachedPathForURI', [uri, 'FOO']);
};

PhoneGap.addPlugin('urlCache', new Cache());