How to pass arguments to app built on Phonegap - objective-c

Question

I'm writing an app using JQM and Phonegap to deploy on iOS and I need it to read input arguments like a url arguments of a common website does in javascript by handling the object 'window.location.search'
In my situation, the app will be launched from a website, like this:
My App
This is working right now, I can already call my app, what I need now is to read the arguments arg1, arg2, etc. I've tried reading window.location.search but with no luck.
How can I do this? Do I need to write some Objective C code?
Any suggestions would be appreciated.
Thanks.

Answer 1

My problem was solved using the content of this link: https://gist.github.com/859540
The code is:
Objective-c part:
In MainViewController.m:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// perform any custom startup stuff you need to ...
// process your launch options
NSArray *keyArray = [launchOptions allKeys];
if ([launchOptions objectForKey:[keyArray objectAtIndex:0]]!=nil)
{
// we store the string, so we can use it later, after the webView loads
NSURL *url = [launchOptions objectForKey:[keyArray objectAtIndex:0]];
self.invokeString = [url absoluteString];
NSLog(#amp;" launchOptions = %#",url); // if you want to see what is happening
}
// call super, because it is super important ( 99% of phonegap functionality starts here )
return [super application:application didFinishLaunchingWithOptions:launchOptions];
}
- (void) webViewDidFinishLoad:(UIWebView*) theWebView
{
// only valid if ___PROJECTNAME__-Info.plist specifies a protocol to handle
if (self.invokeString)
{
// this is passed before the deviceready event is fired, so you can access it in js when you receive deviceready
NSString* jsString = [NSString stringWithFormat:#"var invokeString = \"%#\";", self.invokeString];
[theWebView stringByEvaluatingJavaScriptFromString:jsString];
}
// Black base color for background matches the native apps
theWebView.backgroundColor = [UIColor blackColor];
return [super webViewDidFinishLoad:theWebView];
}
In the index.html file using cordova-1.7.0:
function onDeviceReady()
{
alert(invokeString);
}
alert returned: myapp://?arg1=1&arg2=2
just the same string used to call it ... :)

Answer 2

I had the same issue, everything here in these answers is hella confusing and extra information.
Understanding and solving the problem in 2 easy steps:
Informative (you can skip if you don't care what happens in the background): Go to AppDelegate.m in Clases folder in the project and search for "handleOpenUrl", you should notice some code there with comments explaining what's up. I don't know objective-c, but intuitively that code there looks for window.handleOpenURL function and calls it giving it the parameter of the url called (e.g. 'myapp:///?parameter=value')
Basically all you have to do is globally(in window object) define the function handleOpenURL
function handleOpenURL (url) {
alert(url);
}
Note that this only gets executed when your app is opened with an
..

Answer 3

window.location will be the location of your phonegap index.html file, not the URL that was used to launch your app.
Some web searches suggested that a function called:
function handleOpenUrl(url) {
alert("opened from url " + url);
}
.. might automatically be called . I don't have my dev machine here to test though, Sorry!
If this doesn't work in Objective-C check out the handleOpenUrl method of the AppDelegate.m This gets called when your app is opened with a URL Scheme.

Answer 4

you should do it in obj-c and then with a plugin pass it to javascript code :
for doing it in obj-c first you should implement
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
NSURL *urlToParse = [launchOptions objectForKey:UIApplicationLaunchOptionsURLKey];
if (urlToParse) {
[self application:application handleOpenURL:urlToParse];
}
return YES;
}
and then you could access parameters like this :
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
if ([[url scheme] isEqualToString:#"myapp"]) {
//in here you do whatever you need the app to do
// e.g decode JSON string from base64 to plain text & parse JSON string
}
return YES; //if everything went well
}

Answer 5

function getParameterByName(name)
{
name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
var regexS = "[\\?&]" + name + "=([^&#]*)";
var regex = new RegExp(regexS);
var results = regex.exec(window.location.href);
if(results == null)
return "";
else
return results[1];
}
Call this function like var para1 = getParameterByName("para1");
on pageshow event in jquery mobile.
$('#page').on('pageshow',function(event){
var para1 = getParameterByName("para1");
});