I'm trying create a subclass of UIActivity to add a custom button to a UIActivityViewController. I want this custom button to be able to open a link without leaving the application. I've found numerous solutions that allow for opening things in safari, but I can't figure out if it is possible to just open a UIWebview inside my app (Modal view perhaps?).
I've tried creating a `UIWebview in the delegate method to handle the click, but since this isn't a viewcontroller I can't add it to the view hierarchy.
- (void)prepareWithActivityItems:(NSArray *)activityItems{
UIWebView *webView=[[UIWebView alloc] initWithFrame:CGRectMake(0,0,320,480)];
NSURLRequest *urlRequest;
NSURL *urlforWebView;
urlforWebView=[NSURL URLWithString:#"http://www.google.com"];
urlRequest=[NSURLRequest requestWithURL:urlforWebView];
[webView loadRequest:urlRequest];
}
// example:Need to add your webview to your mainview first
UIWebView *webView = [[UIWebView alloc] init];
[webView setFrame:CGRectMake(0, 0, 320, 460)];
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://google.com"]]];
[[self view] addSubview:webView];
I believe this project implements just what you would like to do but it opens in safari: https://github.com/davbeck/TUSafariActivity Good for starting point.
The activity itself cannot open the view as it is not connected to the controller view hierarchy. You need some way to tell the host controller that the user has selected your activity. The easiest way to do this is through notifications:
The view controller registers for notifications with a given identifier.
The activity posts this notification if performed.
The notification is processed by the activity in the handler method and it opens the web view.
Don't forget to unregister the view controller from the notification center if the controller is being removed from the navigation stack.
There are lots of examples for using notifications, like this Send and receive messages through NSNotificationCenter in Objective-C?
Try this
UIPlainViewController here is just a custom UIViewController with a WebView added to it. Implement (UIViewController *)activityViewController in your derived UIActivity class as such:
(UIViewController *)activityViewController {
NSString *page = #"some url";
NSURL *url = [[NSURL alloc] initWithString:page];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
[((UIPlainViewController*)self.plainViewController).webView loadRequest:request];
return self.plainViewController;
}
Related
I have a UIWebView in UINavigationController.
I have a TableView, When the clicks cell of the table,
it goes to WebView, but when user clicks textfield in webview,
keyboard will does not show up.
Why does not show up?
Which part of code is required?
This code is part of the transition to UIWebView below.
UIViewController *wvc = [[UIViewController alloc] init];
UIWebView *uiWebView = [[UIWebView alloc] initWithFrame: CGRectMake(0,0,320,480)];
[uiWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://sample/form.html"]]];
[wvc.view addSubview: uiWebView];
[self.navigationController pushViewController:wvc animated:YES];
Any help is greatly appreciated.
This happens when the window containing the web view isn't the key window. This can happen if you create more than one UIWindow in your app and forget to return the key window status to your main window. Sending -makeKeyWindow or -makeKeyAndVisible to your main window (the one in your MainWindow nib or created by your app delegate) fixes this.
My webpage will not load it shows nothing I have 3 viewcontrollers in firstviewcontroller you click the button which loads the next page thirdviewcontroller up to this point all is good but the webpage doesnt load
code from firstviewcontroller
-(IBAction)moveToViewSiteView:(id)sender{
self.third = [[[SecondViewController alloc]initWithNibName:#"ThirdViewController" bundle:nil]autorelease];
[self.navigationController pushViewController:self.third animated:YES];
}
code in thirdviewcontroller
- (void)viewDidLoad {
NSString *urlAddress=#"http://www.apple.com/";
NSURL *url=[NSURL URLWithString:urlAddress];
NSURLRequest *requestObj= [NSURLRequest requestWithURL:url];
[self.cscsPage loadRequest:requestObj];
[super viewDidLoad];
}
the uiwebview i have called webview in the document window in ib if i drag from files owner to the webview then when i run it the app crashes.
hope all is clear
thanks
Move [super viewDidLoad]; to the top of viewDidLoad method. You should invoke the super class implementation of it first.
im making an application where i have to load my database from html file which is in my resource folder. i have a table view and when i click on a certain cell it will open html file based on that click. can any one help me how to do this. thanks
// create a web view in "cellForRowAtIndexPath"
UIWebView *wv = [[UIWebView alloc] initWithFrame:CGRectMake(0,0,320,480)];
[wv loadHTMLString: << your html >> baseURL: nil];
wv.delegate = self;
// implement the webView delegate
- (void) webViewDidFinishLoad:(UIWebView *)webView {
[self.view addSubView:webView]; // or push onto the naviation controller
}
I think when you 'didSelectCellAtIndex' in the table view will open a new view controller with the webview. And you have also mapping of each cell with the corresponding html file name. Then in the viewDidLoad method of your next VC, you can use this code, while webView is the outlet pointing to your UIWebView. And htmlFileName is the html file's name.
[webView loadRequest:[NSURLRequest requestWithURL:
[NSURL fileURLWithPath:[[NSBundle mainBundle]
pathForResource:htmlFileName
ofType:#"html"]
isDirectory:NO] ] ];
From my Objective C iPhone app, I want a user to click on a "Register" for account button and then open up a registration page on my website. What is the code on the iPhone to open up a website in response to a user action?
Create a UIButton and assign the action to a method like this:
- (IBAction)register:(id)sender {
//you'll want to subclass UIViewController
SomeViewController *webViewController = [[SomeViewController alloc]init];
[self presentModalViewController:webViewController animated:YES];
[webViewController release];
}
Your SomeViewController will have a webview that load's your register page. Then in your "SomeViewController"'s viewDidLoad, do something like this:
- (void)viewDidLoad
{
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:#"http://mysite.com/register"]];
//this is a webview that you either created in -loadView or IB
[self.webView loadRequest:request];
}
I got a UITabBarController and one of the bar items is a Navigation Controller with some buttons on it.
One of the buttons opens up a urlRequest and load it in a UIWebView.
NSURL * url = [NSURL URLWithString:myUrl];
NSURLRequest * urlRequest = [NSURLRequest requestWithURL:url];
UIWebView * web = [tView wView];
[web setScalesPageToFit:YES];
[web loadHTMLString:#"Loading" baseURL:nil];
[web loadRequest:urlRequest];
[self.navigationController pushViewController:tView animated:YES];
For some reason when i click the button for the first time nothing happens.
I used the UIWebViewDelegate protocol to debug it like so:
- (void)webViewDidStartLoad:(UIWebView *)webView
{
NSLog(#"webViewDidStartLoad");
}
When i click the button nothing happens, and i don't see the NSLog message.
When i hit back and click the button again, i see the debug and everything works just find.
Any idea what causing this ?
P.S if i put the :
[self.navigationController pushViewController:tView animated:YES];
in the webViewDidStarLoad method the application just hang, since it's not loading it on the first click.
You need to make sure that tView's view has been loaded. When a viewController is instantiated, its view (and all of it's IBOutlets) are all nil, and remain that way until the view is loaded.
You have two options: move your load stuff into tView's -viewDidLoad method, or force the view to load before calling [tView wView] by, for example, calling [tView view] (this will force the XIB file to be loaded, and all outlets to be connected.