I have a Tabbed Based application and I want to use swipe gestures to navigate through the view controllers.
I tried:
- (IBAction)swipeLeftDetected:(UIGestureRecognizer *)sender {
UISecondViewController *second =[[UISecondViewController alloc] initWithNibName:#"UISecondViewController" bundle:nil];
second.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:second animated:YES];
}
paired with this:
- (void)viewDidLoad; {
UISwipeGestureRecognizer *swipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(swipeLeftDetected:)];
swipeRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipeRecognizer];
}
But it crashes on the swipe. Any help? Thanks!
Your code works well on my Xcode.
Only changed:
UISecondViewController *second =[[UISecondViewController alloc] initWithNibName:#"UISecondViewController" bundle:nil];
to:
SecondViewController *second =[[SecondViewController alloc] init];
because I don't have the UISecondViewController class.
Just verify there is UISecondViewController.xib in your project, otherwise it will crash.
But I'm not sure here is your problem.
Related
I am trying to Load html string into a webview. But the webview shows a white blank colour on run time. added the UIWebViewDelegate and declare object like this.
#property (strong, nonatomic) IBOutlet UIWebView *aboutWebView;
but still having the same issue.
- (void)viewDidLoad {
[super viewDidLoad];
[[self navigationController] setNavigationBarHidden:YES animated:YES];
[_aboutWebView setDelegate:self];
[self loadWebView];
// Do any additional setup after loading the view.
}
-(void)loadWebView{
_aboutWebView= [[UIWebView alloc]init];
_aboutWebView.backgroundColor= [UIColor blueColor];
NSString *embedHTML= #"html Code";
[_aboutWebView loadHTMLString: embedHTML baseURL: nil];
}
Please remove the below line from your code.It works for you.
_aboutWebView= [[UIWebView alloc]init];
Set the web-view delegate after initialising it , and add this line of code [webView setScalesPageToFit:YES];
There is no need for allocating your webview again in loadWebView method of yours.
comment this line "_aboutWebView= [[UIWebView alloc]init]".
You are already creating an IBOutlet for your webview which automatically creates an object for view.
Have below in HTML String
<head><style type='text/css'>body {background-color: transparent;border: 0px;margin: 0px;padding: 0px;}</style></head>
And for webview have this
yourWebView.backgroundColor = [UIColor clearColor];
yourWebView.opaque = NO;
This will not show white color in run time...
First at all,your HTML format is not correct,writing correct HTML to load on webView.
Then,add self.view.backgroundColor=[UIColor whiteColor]; in function - (void)viewDidLoad.
Hope to help you！
I am currently wrapping a webApp up as an app. With in the web app there is a button that when clicked automatically asks if you want to go to the camera of the stored images and when selected will upload the image for you. In the web app from the phone browser this works as expected.
Now I have wrapped the webApp up in a UIWebView this function no longer works. It actually appears to close the UIWebview when selecting either of the above options. Does anyone know what the procedure is to get this to work through the UIWebView.
Do I have to give permission? Or is there more to it like detecting the HTML when the button is clicked and handling it from the UIWebView.
The HTML on the button looks like this.
<input type="file" required id="file" name="file" accept="image/*" multiple>
ADDED CODE
WebViewController.h
#import <UIKit/UIKit.h>
#interface WebViewController : UIViewController <UIWebViewDelegate,UINavigationControllerDelegate, UIImagePickerControllerDelegate>
{
UIViewController *viewController;
}
........
WebViewController.m
#import "WebViewController.h"
#import <AssetsLibrary/AssetsLibrary.h>
#import "AppDelegate.h"
#end
#implementation WebViewController
- (void)viewDidLoad
{
[super viewDidLoad];
viewController = [[UIViewController alloc] init];
NSString *fullURL = self.mainURL; // get this from defualts - have removed code for this
NSURL *url = [NSURL URLWithString:fullURL];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[_viewWeb loadRequest:requestObj];
ALAssetsLibrary *lib = [[ALAssetsLibrary alloc] init];
[lib enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
NSLog(#"%i",[group numberOfAssets]);
} failureBlock:^(NSError *error) {
if (error.code == ALAssetsLibraryAccessUserDeniedError) {
NSLog(#"user denied access, code: %i",error.code);
}else{
NSLog(#"Other error code: %i",error.code);
}
}];
}
-(void)webViewDidStartLoad:(UIWebView *)viewWeb
{
[UIApplication sharedApplication].applicationIconBadgeNumber = 0;
}
- (void)webViewDidFinishLoad:(UIWebView *)viewWeb
{
}
//Note: I check to make sure the camera is available. If it is not (iPod touch or Simulator) I show the photo library instead.
-(void) showCamera
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else
{
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
imagePicker.delegate = self;
[viewController presentViewController:imagePicker animated:YES completion:nil];
}
//Here we intercept any time the webview tries to load a document. When the user hits our "showcamera: url" we go to work.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:
(UIWebViewNavigationType)navigationType
{
if ([request.URL.scheme isEqualToString:#"myApp"])
{
if ([request.URL.host isEqualToString:#"myFunction"])
{
[self showCamera];
}
return NO;
}
return YES;
}
//After the imagepicker has done it's thing, we pass the data back to the webview to be displayed.
//If we wanted to be fancy here, we could have done this via Javascript so we could dynamically insert an image without reloading the page.
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[viewController dismissViewControllerAnimated:YES completion:nil];
UIImage* image = [info objectForKey:UIImagePickerControllerOriginalImage];
NSData *imageData = UIImageJPEGRepresentation (image, 0.5);
NSURL *tmp = [NSURL URLWithString:#"ignore"];
[_viewWeb loadData:imageData MIMEType:#"image/jpeg" textEncodingName:#"UTF-8" baseURL:tmp];
}
#end
I have removed some code that was irrelevant
I have managed to fix the issue and it goes way back to bug that was found in iOS 8 that still hasn't been fixed. Its to do with how the UIWebView is being presented.
Adding this code fixed it.
-(void)dismissViewControllerAnimated:(BOOL)flag completion:(void (^)(void))completion
{
if ( self.presentedViewController)
{
[super dismissViewControllerAnimated:flag completion:completion];
}
}
For any one else confused or struggling with this Note that you do not need to start messing around with UIImagePicker or UIWebView delegates. Your web view should take care of opening the camera library or camera. This was a real pain of an issue so hopefully this may help others in my position. you can also see THIS Question as this is where i got my answer from. Thanks Andrey for helping too
As an alternative you can try to use UIWebViewDelegate's method webView:shouldStartLoadWithRequest:navigationType: to catch custom events:
In your HTML:
Do something
<button onclick="window.location.href='myApp://myFunction'">Do some action</button>
And then:
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
if ([request.URL.scheme isEqualToString:#"myApp"]) {
if ([request.URL.host isEqualToString:#"myFunction"]) {
// do something
}
return NO;
}
return YES;
}
I am trying to embed youtube video into my iOS application.For that I have created a UIWebView & trying to load the Youtube video from following here
I have gone through the all the answers for the above problem. Even then its not working.
I have also tried loading very simple HTML
NSString *embedHTML =[NSString stringWithFormat:#"<html><body>Hello World</body></html>"];
[webView loadHTMLString:embedHTML baseURL:nil];
Even then, I am getting compile error Parse Issue Expecte ']'
I have tried cleaning, quitting the XCode & relaunching it again. I donno, I am not able to use that method. How to use the above loadHTMLString method for my UIWebView.
PS : Please do not tag this question as duplicate. I have tried all the solutions in Stackoverflow. Nothing has worked
WebView *webDesc = [[UIWebView alloc]initWithFrame:CGRectMake(12, 50, 276, 228)];
NSString *embedHTML = #"<html><head></head><body><p>1. You agree that you will be the technician servicing this work order?.<br>2. You are comfortable with the scope of work on this work order?.<br>3. You understand that if you go to site and fail to do quality repair for any reason, you will not be paid?.<br>4. You must dress business casual when going on the work order.</p></body></html>";
webDesc.userInteractionEnabled = NO;
webDesc.opaque = NO;
webDesc.backgroundColor = [UIColor clearColor];
[webDesc loadHTMLString: embedHTML baseURL: nil];
- (NSString *)getHTMLContent
{
NSString *cssPath = [[NSBundle mainBundle] pathForResource:#"baseline" ofType:#"css"];
NSData *cssData = [NSData dataWithContentsOfFile:cssPath];
NSString *cssStyle = [[NSString alloc] initWithData:cssData encoding:NSASCIIStringEncoding];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
NSString *subtitle = [NSString stringWithFormat:#"%# | %#", self.article.author, [dateFormatter stringFromDate:self.article.publishedDate]];
NSString *htmlString = [NSString stringWithFormat:#"<html><head><meta name='viewport' content='width=device-width; initial-scale=1.0; maximum-scale=1.0;'></head><style type=\"text/css\">%#</style><body><div id=\"container\"><h1>%#</h1><p class='subtitle'>%#</p>%#</div></body></html>", cssStyle, self.article.title, subtitle, self.article.content];
return htmlString;
}
It is very simple. You just have to add only one line. Try It:
NSString *htmlString = #"<html><head></head><body><p>1. You agree that you will be the technician servicing this work order?.<br>2. You are comfortable with the scope of work on this work order?.<br>3. You understand that if you go to site and fail to do quality repair for any reason, you will not be paid?.<br>4. You must dress business casual when going on the work order.</p></body></html>";
[WebView loadHTMLString: htmlString baseURL: nil];
You probably need to provide more code if you want people to help you. I just used webView in a similar way and it's working fine.
self.webView = [[UIWebView alloc] initWithFrame:myFrame];
self.webView.scalesPageToFit = YES;
[self.webView setBackgroundColor:[UIColor whiteColor]];
//pass the string to the webview
[self.webView loadHTMLString:[[self.itineraryArray objectAtIndex:indexPath.row] valueForKey:#"body"] baseURL:nil];
//add it to the subview
[self.view addSubview:self.webView];
Can you provide more information and code?
it doesnt seems like an issue on webview.Please do add the code where it breaks.Error says you missed a ] somewhere in the code
try to load the url directly into the webview :
UIWebView *webview=[[UIWebView alloc]initWithFrame:CGRectMake(100, 100, 200, 250)];
[webview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://youtube.com/embed/-0Xa4bHcJu8"]]];
Webpage title doesn't update unless I call the method twice
NSURL *yourURL = [NSURL URLWithString: webpageURLLabel.text ];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:yourURL];
[webpagePreview loadRequest:request];
webpagePreview.scalesPageToFit = YES;
webpageTitleLabel.text = [webpagePreview stringByEvaluatingJavaScriptFromString:#"document.title"];
Any suggestions on how to fix this?
I guess your request is not finished, so you're too early to call a javascript on that page.
You should make the calling class a delegate of your webview and set the title on webViewDidFinishLoad:
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
webpageTitleLabel.text = [webpagePreview stringByEvaluatingJavaScriptFromString:#"document.title"];
}
The above code fixed my issue.
I'm working with ShareKit, an open-source sharing foundation for iOS apps. There is a known bug that prevents the Kit from detecting what your root view controller is. The fix for that bug is adding [SHK setRootViewController:myViewController]; in the app delegate.
If the fix is in the UIApplication didFinishLaunching method, wouldn't the view controller just be self? What am I missing? I've also tried self.viewController, self.window.rootViewController and self.window to no avail.
EDIT: Here's the entire didFinishLoading:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.viewController = [[Chatter_BoxViewController alloc] initWithNibName:#"Chatter_BoxViewController" bundle:nil];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
[SHK setRootViewController:self.viewController];
return YES;
}
If it would only be "self" in the didFinishLaunching it would refer to the UIApplication, don't you agree? Are you initing correctly the viewController? Post some more code. :)
Comment to your Edit:
If you have your Window set normally in your XIB you don't need this:
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
Also, if you do this (presuming your viewController is retained as property):
self.viewController = [[Chatter_BoxViewController alloc] initWithNibName:#"Chatter_BoxViewController" bundle:nil];
You will have a leak. Just do this:
viewController = [[Chatter_BoxViewController alloc] initWithNibName:#"Chatter_BoxViewController" bundle:nil];