i have a custom alertvew, when a button is pressed inside the uiwebview calls javascript:
function doSomething(event) {
alert("simple test");
return false;
}
i'd like that "alert" open my custom uialert.
is it possible?
thanks
found that code that works for me:
#interface UIWebView (JavaScriptAlert)
- (void)webView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame;
#end
#implementation UIWebView (JavaScriptAlert)
- (void)webView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame {
UIAlertView* dialogue = [[UIAlertView alloc] initWithTitle:nil message:message delegate:nil cancelButtonTitle:#"Okay" otherButtonTitles:nil];
UIImage *theImage = [UIImage imageNamed:#"MdC_Base_PopUp.png"];
theImage = [theImage stretchableImageWithLeftCapWidth:16 topCapHeight:16];
CGSize theSize = [dialogue frame].size;
UIGraphicsBeginImageContext(theSize);
[theImage drawInRect:CGRectMake(0, 0, dialogue.frame.size.width, dialogue.frame.size.height)];
theImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
dialogue.layer.contents = (id)[theImage CGImage];
[dialogue show];
[dialogue autorelease];
}
#end
Related
I'm trying to display a list of web pages the user can switch between in my app. I've done this successfully with documents. however, I don't want the user to be able to navigate from these pages. I found out how to do this by looking it up. The problem is that it only executes on the first page. When I switch to another page shouldStartLoadWithRequest stops working even when I go back to the first page. (This is all done with my specially designed back and forward buttons.) How can I fix this so that it will be invoked every single time and prevent the user from clicking links and navigating away from my set pages? I'm new to objective-c. All the relevant code is below. Some things were declared globally in the .h. Sorry it's kind of rough. I tabbed over only what was needed to make it into code formatting. Thanks!
My .h file:
#import <UIKit/UIKit.h>
#interface learnViewController : UIViewController <UINavigationControllerDelegate>
{
IBOutlet UIWebView *web;
UIButton *backButton;
UIButton *forButton;
}
#end
My .m file
#import "learnViewController.h"
#import "ViewController.h"
static NSString* links[] =
{
#"http://www.nlm.nih.gov/medlineplus/ency/article/000141.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/000065.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/001087.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/000091.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/007270.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/000145.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/000093.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/000087.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/000140.htm",
#"http://www.nlm.nih.gov/medlineplus/ency/article/000132.htm"
};
int numlinks = 10;
int i = 0;
#interface learnViewController ()
#end
#implementation learnViewController
- (void)viewDidLoad
{
[super viewDidLoad];
float viewWidth = self.view.frame.size.width;
float viewHeight = self.view.frame.size.height;
self.view.multipleTouchEnabled = true;
//Background
UIImageView *backgroundView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, viewWidth, viewHeight)];
backgroundView.image = [UIImage imageNamed:#"Background.png"];
[self.view addSubview:backgroundView];
//Show Portal
web = [[UIWebView alloc]initWithFrame:CGRectMake(0.0, viewHeight/34.0, viewWidth, (viewHeight - viewHeight/6.4))];
self->web.delegate = self;
web.scrollView.scrollEnabled = TRUE;
web.scalesPageToFit = TRUE;
[self loadDocument:links[i] inView:web];
[self.view addSubview:web];
//Buttons
UIButton *homeButton = [[UIButton alloc] initWithFrame:CGRectMake((viewWidth/2.0 - viewWidth/6.0/2.0), (viewHeight - viewHeight*280.0/2208.0/2.0 - viewWidth/6.0/2.0), (viewWidth/6.0), (viewWidth/6.0))];
[homeButton
setBackgroundImage:[UIImage imageNamed:#"Home.png"]
forState:UIControlStateNormal];
[homeButton addTarget:self action:#selector(homePressed:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:homeButton];
backButton = [[UIButton alloc] initWithFrame:CGRectMake((viewWidth/2.0/3.5 - viewWidth/9.0/2.0), (viewHeight - viewHeight*280.0/2208.0/2.0 - viewWidth/9.0/2.0), (viewWidth/9.0), (viewWidth/9.0))];
[backButton
setBackgroundImage:[UIImage imageNamed:#"Back.png"]
forState:UIControlStateNormal];
backButton.enabled = FALSE;
[backButton addTarget:self
action:#selector(backPressed:)
forControlEvents:UIControlEventTouchDown];
[self.view addSubview:backButton];
forButton = [[UIButton alloc] initWithFrame:CGRectMake((viewWidth/2.0/3.5*2.0 - viewWidth/9.0/2.0), (viewHeight - viewHeight*280.0/2208.0/2.0 - viewWidth/9.0/2.0), (viewWidth/9.0), (viewWidth/9.0))];
[forButton
setBackgroundImage:[UIImage imageNamed:#"Forward.png"]
forState:UIControlStateNormal];
[forButton addTarget:self
action:#selector(forPressed:)
forControlEvents:UIControlEventTouchDown];
[self.view addSubview:forButton];
UIButton *refButton = [[UIButton alloc] initWithFrame:CGRectMake((viewWidth - viewWidth/2.0/3.5*2.0 - viewWidth/9.0/2.0), (viewHeight - viewHeight*280.0/2208.0/2.0 - viewWidth/9.0/2.0), (viewWidth/9.0), (viewWidth/9.0))];
[refButton
setBackgroundImage:[UIImage imageNamed:#"Scale.png"]
forState:UIControlStateNormal];
[refButton addTarget:self
action:#selector(refPressed:)
forControlEvents:UIControlEventTouchDown];
[self.view addSubview:refButton];
UIButton *webButton = [[UIButton alloc] initWithFrame:CGRectMake((viewWidth - viewWidth/2.0/3.5 - viewWidth/9.0/2.0), (viewHeight - viewHeight*280.0/2208.0/2.0 - viewWidth/9.0/2.0), (viewWidth/9.0), (viewWidth/9.0))];
[webButton
setBackgroundImage:[UIImage imageNamed:#"Web.png"]
forState:UIControlStateNormal];
[webButton addTarget:self
action:#selector(webPressed:)
forControlEvents:UIControlEventTouchDown];
[self.view addSubview:webButton];
}
//Button presses
-(void)homePressed:(id)sender
{
ViewController *home = [[ViewController alloc] initWithNibName:nil bundle:nil];
[self presentViewController:home animated:YES completion:NULL];
}
- (void) refPressed:(id)sender
{
[self loadDocument:links[i] inView:web];
}
-(void)backPressed:(id)sender
{
float viewWidth = self.view.frame.size.width;
float viewHeight = self.view.frame.size.height;
if (i > 0)
{
[web removeFromSuperview];
i--;
web = [[UIWebView alloc] initWithFrame:CGRectMake(0.0, viewHeight/34.0, viewWidth, (viewHeight - viewHeight/6.4))];
[self loadDocument:links[i] inView:web];
web.scrollView.scrollEnabled = TRUE;
web.scalesPageToFit = TRUE;
[self.view addSubview:web];
forButton.enabled = TRUE;
}
if (i == 0)
{
backButton.enabled = FALSE;
}
}
-(void)forPressed:(id)sender
{
float viewWidth = self.view.frame.size.width;
float viewHeight = self.view.frame.size.height;
if (i < numlinks - 1)
{
[web removeFromSuperview];
i++;
web = [[UIWebView alloc] initWithFrame:CGRectMake(0.0, viewHeight/34.0, viewWidth, (viewHeight - viewHeight/6.4))];
[self loadDocument:links[i] inView:web];
web.scrollView.scrollEnabled = TRUE;
web.scalesPageToFit = TRUE;
[self.view addSubview:web];
backButton.enabled = TRUE;
}
if (i == numlinks - 1)
{
forButton.enabled = FALSE;
}
}
-(void)loadDocument:(NSString*)documentName inView:(UIWebView*)webView
{
NSString *url = links[i];
NSURL *nsurl = [NSURL URLWithString:url];
NSURLRequest *nsrequest = [NSURLRequest requestWithURL:nsurl];
[webView loadRequest:nsrequest];
}
-(void)webPressed:(id)sender
{
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:links[i]]];
}
-(BOOL) webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
NSURL *url = request.URL;
NSString *urlString = url.absoluteString;
NSRange range = [urlString rangeOfString:links[i]];
if (range.location != NSNotFound)
{
return YES;
}
else
{
return NO;
}
}
- (void)viewDidUnload
{
[self->web stopLoading];
self->web.delegate = nil;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
Okay, I figured it out through trial and error since no one wanted to help me. I tried looking for answers to similar questions, but nothing actually worked for me. If you're reading this and having the same problem, this is how you fix it. All you have to do is reset the web delegate to nil then back to self as so:
self.webView.delegate = nil;
self.webView.delegate = self;
I don't know why everyone else's code was so complex, and I can only speculate as to why this works. I just got lucky honestly, but I think it maybe clears the cache when you do this, thus making each page fresh to the program. That's what other people were talking about. However, their methods did not work for me either because of my lack of experience or because they do not fit my particular case. This is much simpler and is guaranteed to work as long as you make sure it does this each time you load one of your designated web pages. You're welcome if you're reading this. If anyone would so kindly as to look at my post and explain why this works in better detail, please feel free to do so!
I have given a webview in Sectioned UiTableViewCell like this
if(section==0)
{
static NSString *CellIdentifier=#"Cell";
UITableViewCell* cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil)
{
cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];
webView = [[UIWebView alloc] initWithFrame:CGRectZero];
webView.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
webView.tag = 1001;
webView.userInteractionEnabled = NO;
webView.backgroundColor = [UIColor clearColor];
webView.opaque = NO;
[cell addSubview:webView];
}
webView = (UIWebView*)[cell viewWithTag:1001];
webView.delegate=self;
webView.frame=CGRectMake(0, 0, 300, 1000);
NSLog(#"current mode: %#", [[NSRunLoop currentRunLoop] currentMode]);
[webView loadHTMLString: [NSString stringWithFormat:[arrSecCount objectAtIndex:0], indexPath.section]baseURL:nil];
return cell;
}
where as the content in webview is dynamic.in
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.section==0)
{
NSString *output = [webView stringByEvaluatingJavaScriptFromString:#"document.body.scrollHeight;"];
return [output floatValue]+300;
}
}
but when content in webview increases it is overiding on other section not fitting height.i have been tried many methodson search but of no use.
Help me with your suggestions
I think the UITableViewCell will get its height before the content of the WebView is even loaded...
What is suggest is that in the delegate method of the webview :
- (void)webViewDidFinishLoad:(UIWebView *)webView
you do a
[tableView reloadData];
That means you have to keep a reference to the webview and not reloading the HTMLString everytime the cell content is updated...
I have a MainController and detailedcontroller. When I popover the Book selection and select a Book, the detailcontroller display an UIWebView with the book articles :
#interface IpadBooksViewController : UITableViewController {
SearchResult *searchResult;
IpadArticleViewController *detailController;
IpadMainViewController *mainController;
UIPopoverController *popover;
}
Into the UIWebView, I display an Email icon and catch the scheme :
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
NSURL *url = [request URL];
NSString *scheme = [url scheme];
NSString *host = [url host];
if ([[url description] hasSuffix:#"next"]) {
NSLog(#"next Show");
}
BOOL isShareLinks = [host isEqualToString:#"displayShareLinks"];
BOOL isFavoriteLinks = [host isEqualToString:#"displayFavoriteLinks"];
if ([#"myappurl" isEqualToString:scheme] && (isShareLinks || isFavoriteLinks)) {
self.selectedArticleNumber = [url.path lastPathComponent];
if (isShareLinks) {
[self sendMailArticleNumber:selectedArticleNumber];
} else if (isFavoriteLinks) {
NSLog(#"ipad favorite clicked");
[self toggleFavorite:selectedArticleNumber];
Broker *broker = [[Broker alloc] init];
[broker loadProjects:self];
[broker release];
}
}
return [super webView:webView shouldStartLoadWithRequest:request navigationType:navigationType];
}
Action is supposed to display the MFMailController under my UIWebView, but nothing is displayed without error message :
- (void) sendMailArticleNumber:(NSString *)articleNumber {
MFMailComposeViewController* composer = [[MFMailComposeViewController alloc] init];
composer.mailComposeDelegate = self;
[composer setSubject:#"Article"];
NSString *messageBody = [Article fetchBody:articleNumber bookId:bookId];
[composer setMessageBody:messageBody isHTML:YES];
[self presentModalViewController:composer animated:YES];
[composer release];
}
Any help will be welcomed. I did try creating a popover, addView atIndex without success ... Let me know if you need more code.
David
I did solve the issue by loading the controller into the delegate as following :
[((PublilexAppDelegate*)[[UIApplication sharedApplication] delegate]) sendMailArticleNumber:selectedArticleNumber bookId:self.bookId];
And then into the Delegate :
- (void) sendMailArticleNumber:(NSString *)articleNumber bookId:(NSString*)bookId {
MFMailComposeViewController* composer = [[MFMailComposeViewController alloc] init];
composer.mailComposeDelegate = self;
[composer setSubject:#"Article"];
NSString *messageBody = [Article fetchBody:articleNumber bookId:bookId];
[composer setMessageBody:messageBody isHTML:YES];
[self->navigationController presentModalViewController:composer animated:YES];
[composer release];
}
And to dismiss and comeback to the previous view :
-(void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
[self->navigationController dismissModalViewControllerAnimated:YES];
// [self dismissViewControllerAnimated:YES completion:nil];
// [((PublilexAppDelegate*)[[UIApplication sharedApplication] delegate]) navigateToIpadMain];
}
The navigationbar is failing to appear, works fine in a UITableView, but fails inside a popoverController
Initiate a popover popoverController in UIViewController
-(IBAction) btnShowMovies:(id) sender {
if (self.popoverController == nil) {
teamAController *movies =
[[teamAController alloc]
initWithNibName:#"teamAController"
bundle:[NSBundle mainBundle]];
UIPopoverController *popover =
[[UIPopoverController alloc] initWithContentViewController:movies];
popover.delegate = self;
[movies release];
self.popoverController = popover;
[popover release];
}
CGRect popoverRect = [self.view convertRect:[btn frame]
fromView:[btn superview]];
popoverRect.size.width = MIN(popoverRect.size.width, 100);
[self.popoverController
presentPopoverFromRect:popoverRect
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionDown
animated:YES];
}
teamAController.h
#interface teamAController : UIViewController <UITableViewDataSource, UITableViewDelegate> {
UITableView *tableView;
NSArray *theArray;
}
#property (nonatomic, retain) NSArray *theArray;
#property (nonatomic, retain) IBOutlet UITableView *tableView;
-(void) createArray;
teamAController.m
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.title= #"FooBarExtreme";
self.contentSizeForViewInPopover = CGSizeMake(250.0, 300.0);
[self createArray];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
}
Everything works, I have lovely table with images etc, correct sized and placed popover just no title bar..... ?
I found the solution/problem by following the tutorial at http://mobiforge.com/designing/story/using-popoverview-ipad-app-development.
Worth noting that I found this the most comprehensive one on creating uiPopoverController with uiNavigationBar elements from UIButtons.
The issue is that the popover itself belongs to the view that calls it. The content is derived from the xlib/view you load into it. But not the titlebar. You call that in the parent view view.
This code is in the main view and is called from the UIButton
// BookMarksViewController is the class that contains the code/xib for the popover's content
// Of overarching importance is creating it as a UITableViewController
if (self.popoverController == nil) {
BookMarksViewController *bookMarksViewController =
[[BookMarksViewController alloc]
initWithNibName:#"BookMarksViewController"
bundle:[NSBundle mainBundle]];
// Here's the rub: because in effect this view is controlling the popover
// we have to assign nav bar stuff here. Sigh.
bookMarksViewController.navigationItem.title = #"Territories";
UINavigationController *navController =
[[UINavigationController alloc]
initWithRootViewController:bookMarksViewController];
bookMarksViewController.contentSizeForViewInPopover = CGSizeMake(320, 400);
UIPopoverController *popover =
[[UIPopoverController alloc]
initWithContentViewController:navController];
popover.delegate = self;
[bookMarksViewController release];
[navController release];
self.popoverController = popover;
[popover release];
}
CGRect sourceRect = [self.view convertRect:[btn frame] fromView:[btn superview]];
[self.popoverController presentPopoverFromRect:sourceRect
inView:self.view permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
i want to show leaderbord in my own game ....i am using following method for that but noting happen ... i am confuse with rootview controller as my game is developed in cocos2d so there is nothing like dat :(
// Leaderboards
-(void) showLeaderboard
{
if (isGameCenterAvailable == NO)
return;
GKLeaderboardViewController* leaderboardVC = [[[GKLeaderboardViewController alloc] init] autorelease];
if (leaderboardVC != nil)
{
leaderboardVC.leaderboardDelegate = self;
[self presentViewController:leaderboardVC];
}
}
///
-(void) leaderboardViewControllerDidFinish:(GKLeaderboardViewController*)viewController
{
[self dismissModalViewController];
[delegate onLeaderboardViewDismissed];
}
///////
-(UIViewController*) getRootViewController
{
return [UIApplication sharedApplication].keyWindow.rootViewController;
}
///
-(void) presentViewController:(UIViewController*)vc
{
UIViewController* rootVC = [self getRootViewController];
[rootVC presentModalViewController:vc animated:YES];
}
////
-(void) dismissModalViewController
{
UIViewController* rootVC = [self getRootViewController];
[rootVC dismissModalViewControllerAnimated:YES];
}
...
regards
Haseeb
i dont know but it work for me.if anyone can describe the real reason for why this working in this way i will be very glad....i call it through appdelegate
[(myAppDelegate*)[[UIApplication sharedApplication] delegate]gameCenter];
and from appdelegate i call rootviewcontroller method like
-(void)gameCenter
{
[rootViewController gameCenterLeaderboard];
}
and in rootviewcontroller there is a method
-(void)gameCenterLeaderboard
{
GKLeaderboardViewController* leaderboardVC = [[[GKLeaderboardViewController alloc] init] autorelease];
if (leaderboardVC != nil) {
leaderboardVC.leaderboardDelegate = self;
[self presentModalViewController: leaderboardVC animated: YES];
}
}
the following method is also override in rootviewcontroller
- (void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)leaderboardController
{
[self dismissModalViewControllerAnimated:YES];
}
If you don't have a root UIViewController then I'd recommend creating a new UIViewController set it's view to your openGLView then use that view controller to present the leaderboard as a modal view controller.
UIViewController *leaderboardViewController = [[UIViewController alloc] init];
[leaderboardViewController setView:[[CCDirector sharedDirector] openGLView]];
[leaderboardViewController presentModalViewController:leaderboardVC animated:YES]; //leaderboardVC is your GKLeaderboardViewController