I know this is a common question but none of the answers fix my problem. I have a UIWebView in my app. I have everything set up correctly; the delegate is set, the webView is a property of my view controller. It is set up to load an html string upon loading the viewController. When the html string loads, in the webViewDidFinishLoad method it checks if this is the first time it loaded, and if it is it is told to load a request with a url. The string i use for the url is a property of my viewController. That string is exactly what it is supposed to be. There is just something preventing the webView from actually loading the request. Any ideas would be very much appreciated. Thank you
#interface WebViewController : UIViewController <UIWebViewDelegate, UIActionSheetDelegate, UIPrintInteractionControllerDelegate, MFMailComposeViewControllerDelegate, NSURLConnectionDelegate>
#property (nonatomic, assign) BOOL firstLoad;
#property (nonatomic, retain) UIWebView *webView;
#property (nonatomic, retain) NSString *prefixURLString;
#property (nonatomic, retain) NSString *suffixURLString;
#property (nonatomic, retain) UIActionSheet *actionSheet;
- (id)initWithTitle:(NSString *)newTitle andSuffixURL:(NSString *)suffix;
- (void)reload;
- (void)addActionButton;
- (void)showActions:(UIBarButtonItem *)sender;
- (void)dismissActionSheet;
#end
#implementation WebViewController
#synthesize webView;
#synthesize prefixURLString;
#synthesize suffixURLString;
#synthesize firstLoad;
#synthesize actionSheet;
- (id)initWithTitle:(NSString *)newTitle withPrefixURL:(NSString *)prefix andSuffixURL:(NSString *)suffix
{
self = [super initWithNibName:nil bundle:nil];
if (self) {
// Custom initialization
[self setPrefixURLString:prefix];
[self setFirstLoad:YES];
[self setTitle:newTitle];
[self setSuffixURLString:suffix];
[self setActionSheet:nil];
}
return self;
}
- (id)initWithTitle:(NSString *)newTitle andSuffixURL:(NSString *)suffix
{
return [self initWithTitle:newTitle withPrefixURL:#"https://customer.stld.com/flatroll/ios/%#" andSuffixURL:suffix];
}
- (void)reload
{
if(self.prefixURLString && self.suffixURLString)
{
NSString *fullURLString = [NSString stringWithFormat:self.prefixURLString, [self.suffixURLString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:fullURLString]]];
}
}
- (void)dealloc
{
[suffixURLString release]; suffixURLString = nil;
[prefixURLString release]; prefixURLString = nil;
[actionSheet release]; actionSheet = nil;
[super dealloc];
}
- (void):(UIWebView *)aWebView didFailLoadWithError:(NSError *)error
{
//NSLog(#"WebViewController:DidFailLoadWithError: %#", [error localizedFailureReason]);
[self setTitle:#"Loading Error"];
[self.webView loadHTMLString:[NSString stringWithFormat:#"<html><head><meta name=\"viewport\" content=\"width=device-width, user-scalable=yes\" /></head><body>Loading error:<br />%#</body></html>", [error localizedFailureReason]] baseURL:nil];
}
- (void)webViewDidFinishLoad:(UIWebView *)aWebView
{
if(self.firstLoad)
{
[self setFirstLoad:NO];
[self reload];
[self addActionButton];
}
}
#pragma mark - View lifecycle
- (void)loadView
{
UIWebView *newWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 0, 0)];
[newWebView setDelegate:self];
[newWebView setScalesPageToFit:YES];
[newWebView setUserInteractionEnabled:YES];
[self setWebView:newWebView];
[self setView:newWebView];
[newWebView release];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self.webView loadHTMLString:#"<html><head><meta name=\"viewport\" content=\"width=device-width, user-scalable=yes\" /></head><body><br />Gathering data and generating report.<br />Depends on data and parameters you have requested, this could take time. Please wait...</body></html>" baseURL:nil];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
[self.webView setDelegate:nil];
[self setWebView:nil];
[self setView:nil];
}
I had the same problem, I'm not entirely sure why, but I guess it has to do something with viewControllers life cycle. Anyway try load URL in viewDidAppear method. It fixed it for me. Hope it will help
It turns out my problem had nothing to do with the UIWebView. I just had to change the credential persistence in the URLConnectionDelegate I had set up for my app. I had it set as NSURLCredentialPersistanceNone but I changed it to NSURLCredentialPersistenceSession. I hope this can help anyone else out there who had the exact problem as I did
Related
Here is what I am doing: Allowing the user to upload a photo and two description fields of the photo to MySQL using their iphone app. I have already figured out how to configure the app so that the text from the two description fields are uploaded (using PostURL and an accompanying .php file on my web server).
Where I am running into problems is how to add a photo into the mix, and have the photo AND text fields transmit together into the database into their corresponding columns (image, name, message).
What should my header and implementation files look like? And as an added bonus, what should my .php file look like? Here is how they exist currently, and as an FYI, this only works to transmit text, not the photo.
Header file:
#import <UIKit/UIKit.h>
#define kPostURL #"http://www.example.com/upload.php"
#define kName #"name"
#define kMessage #"message"
#interface FirstViewController : UIViewController<UINavigationControllerDelegate, UIImagePickerControllerDelegate>{
IBOutlet UITextField *nameText;
IBOutlet UITextView *messageText;
NSURLConnection *postConnection;
UIImageView * theimageView;
UIButton * choosePhoto;
UIButton * takePhoto;
}
#property (nonatomic, retain) IBOutlet UITextField * nameText;
#property (nonatomic, retain) IBOutlet UITextView * messageText;
#property (nonatomic, retain) NSURLConnection * postConnection;
#property (nonatomic, retain) IBOutlet UIImageView * theimageView;
#property (nonatomic, retain) IBOutlet UIButton * choosePhoto;
#property (nonatomic, retain) IBOutlet UIButton * takePhoto;
-(IBAction) getPhoto:(id) sender;
-(void) postMessage:(NSString*) message withName:(NSString *) name;
-(IBAction)post:(id)sender;
#end
Implementation file:
#import "FirstViewController.h"
#implementation FirstViewController
#synthesize nameText, messageText, postConnection, theimageView, choosePhoto, takePhoto,postData;
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
-(void) postMessage:(NSString*) message withName:(NSString *) name {
if (name != nil && message != nil){
NSMutableString *postString = [NSMutableString stringWithString:kPostURL];
[postString appendString:[NSString stringWithFormat:#"?%#=%#", kName, name]];
[postString appendString:[NSString stringWithFormat:#"&%#=%#", kMessage, message]];
[postString setString:[postString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:postString]];
[request setHTTPMethod:#"POST"];
postConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
}
}
-(IBAction)post:(id)sender{
[self postMessage:messageText.text withName:nameText.text];
[messageText resignFirstResponder];
messageText.text = nil;
nameText.text = nil;
[[NSNotificationCenter defaultCenter] postNotificationName:#"Test1" object:self];
}
-(IBAction) getPhoto:(id) sender {
UIImagePickerController * picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
if((UIButton *) sender == choosePhoto) {
picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
} else {
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
[self presentModalViewController:picker animated:YES];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[picker dismissModalViewControllerAnimated:YES];
theimageView.image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#end
(^.^)"Hi sorry for my English is not good if someone like correct my redaction I would appreciate this"
Hi you can use (get, post, web services like soap, rest services like json) request.
From my experience if you like to send an image you have to use base64binary this is a string representation of array of bytes because I've never been able to send one array of bytes, but if is string you can send this normal without base64binary.
In my app I am using Apple's KMLViewer to show annotations that I get from a KML file.In the file KMLParser.m, there is an instance variable, placemarkDescription that converts the information under Description tags from kml file to annotation subtitle.Now, in my file every annotation has the information stored under Description in this way:
<table width="280px"><tr><td></td><td></td></tr></table><table width="280px"><tr><td><b>Fitness Bulls</b>---Palester sportive. Sporti dhe koha e lire.....<a href="http://www.site.com/BIZ_DIR/810180432/Article-Fitness-Bulls.aspx" style="color:Green;" >Shikoni detajet >></a></td></tr><tr><td><a href="http://www.site.com/HartaV2/AddReview.aspx?gisDataId=8123855e-b798-40bc-ad2e-00346a931211" style="color:Green;" >Shkruani pershtypjen tuaj >> </a> <p style="float:right;">Postuar nga:<i>Import</i></p></td></tr></table>
In KMLParser.m i have transformed the placemarkDescription from that to this:
<html><body>
<table width="280px"><tr><td></td><td></td></tr></table><table width="280px"><tr><td>
<b>Fitness Bulls</b>---Palester sportive. Sporti dhe koha e lire.....
<a href="http://www.site.com/BIZ_DIR/810180432/Article-Fitness-Bulls.aspx" style="color:Green;" >Shikoni detajet >></a></td></tr><tr><td>
<a href="http://www.site.com/HartaV2/AddReview.aspx?gisDataId=8123855e-b798-40bc-ad2e-00346a931211" style="color:Green;" >Shkruani pershtypjen tuaj >> </a> <p
style="float:right;">Postuar nga:<i>Import</i></p></td></tr></table>
</body></html>
I've done this because I want to pas this string to a webView and visualize this in it.
The problem is that when the kml loads, the methods get the description information, get called severe times.Exactly as times as placemarks stored in the kml.So passing the string directly has no effect.If i choose to set active the subtitle option (annotation.subtitle = placemarkDescription in KMLParser), maybe I gen get the subtitle info of the annotation the user tapped, but I don't want to show this information because it shows like this
<table width="280px"><tr><td></td><td></td></tr></table><table width="280px"><tr......
By the way, I don't have any idea of how to get the subtitle info of the selected annotation.
So far, I have managed only to store the description information in an array (done this in the KMLParser.m).But what should I do with that array?How to know to which array entry corresponds the annotation the user tapped (the annotation that has the callout bubble opened).
So I don't know what to do.
Maybe I have not been too clear: What I want to do is get the Description information of a placemark (annotation), when the user taps an annotation in the map, tapping the disclosureButton should redirect him to a webView that shows the description Information.
EDIT code Added:
DetailViewController.h
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController<UIWebViewDelegate> {
UIWebView *webView;
UITextField *addressBar;
UIActivityIndicatorView *activityIndicator;
NSString *placemarkDescription;
}
#property (nonatomic, retain) IBOutlet UIWebView *webView;
#property (nonatomic, retain) IBOutlet UITextField *addressBar;
#property (nonatomic, retain) IBOutlet UIActivityIndicatorView *activityIndicator;
#property (nonatomic, retain) NSString *placemarkDescription;
-(IBAction) gotoAddress:(id)sender;
-(IBAction) goBack:(id)sender;
-(IBAction) goForward:(id)sender;
#end
DetailViewController.m
#import "DetailViewController.h"
#implementation DetailViewController
#synthesize webView, addressBar, activityIndicator, placemarkDescription;
- (void)viewDidLoad {
[super viewDidLoad];
[webView loadHTMLString:placemarkDescription baseURL:nil];
}
-(IBAction)gotoAddress:(id) sender {
NSURL *url = [NSURL URLWithString:[addressBar text]];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[webView loadRequest:requestObj];
[addressBar resignFirstResponder];
}
-(IBAction) goBack:(id)sender {
[webView goBack];
}
-(IBAction) goForward:(id)sender {
[webView goForward];
}
- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {
if (navigationType == UIWebViewNavigationTypeLinkClicked) {
NSURL *URL = [request URL];
if ([[URL scheme] isEqualToString:#"http"]) {
[addressBar setText:[URL absoluteString]];
[self gotoAddress:nil];
}
return NO;
}
return YES;
}
- (void)webViewDidStartLoad:(UIWebView *)webView {
[activityIndicator startAnimating];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[activityIndicator stopAnimating];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)dealloc {
[super dealloc];
}
#end
PlacemarkAnnotation2.h
#import <Foundation/Foundation.h>
#import <MapKit/Mapkit.h>
#interface PlacemarkAnnotation2 : NSObject <MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString * title;
NSString * subtitle;
NSString * placemarkDescription;
}
#property (nonatomic, assign) CLLocationCoordinate2D coordinate;
#property (nonatomic, retain) NSString * title;
#property (nonatomic, retain) NSString * subtitle;
#property (nonatomic, retain) NSString * placemarkDescription;
#end
PlacemarkAnnotation2.m
#import "PlacemarkAnnotation2.h"
#implementation PlacemarkAnnotation2
#synthesize coordinate, title, subtitle, placemarkDescription;
- (id) initWithCoordinate:(CLLocationCoordinate2D)coord andTitle:(NSString *)maintitle andSubtitle:(NSString *)subTitle {
self.coordinate = coord;
self.title = maintitle;
self.subtitle = subTitle;
return self;
}
-(NSString *) placemarkDescription
{
return placemarkDescription;
}
- (void) setPlacemarkDescription: (NSString *) pd
{
placemarkDescription = pd;
}
- (void) dealloc {
[title dealloc];
[subtitle dealloc];
[placemarkDescription dealloc];
[super dealloc];
}
#end
Changes in KMLParser.M
//KMLPoint class
- (MKShape *)mapkitShape
{
PlacemarkAnnotation2 *annotation = [[PlacemarkAnnotation2 alloc] init];
annotation.coordinate = point;
return [annotation autorelease];
}
//KMLPlacemark class
- (void)_createShape
{
if (!mkShape) {
mkShape = [[geometry mapkitShape] retain];
mkShape.title = name;
// Skip setting the subtitle for now because they're frequently
// too verbose for viewing on in a callout in most kml files.
NSString *lessThan = #"<";
NSString *greaterThan = #">";
placemarkDescription = [placemarkDescription stringByReplacingOccurrencesOfString:lessThan
withString:#"<"];
placemarkDescription = [placemarkDescription stringByReplacingOccurrencesOfString:greaterThan
withString:#">"];
NSString *beforeBody = #"<html><body>";
NSString *afterBody = #"</body></html>";
NSString *finalContent = [[beforeBody stringByAppendingString:placemarkDescription]
stringByAppendingString:afterBody];
placemarkDescription = finalContent;
mkShape.placemarkDescription = placemarkDescription;
}
}
Error found in this lines of code (No cause of crash description):
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view
calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(#">>> Entering %s <<<", __PRETTY_FUNCTION__);
DetailViewController *dvc = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:[NSBundle mainBundle]];
PlacemarkAnnotation2 *pa = (PlacemarkAnnotation2 *)view.annotation;
dvc.placemarkDescription = pa.placemarkDescription;
[self presentModalViewController:dvc animated:YES];
[dvc release];
NSLog(#"<<< Leaving %s >>>", __PRETTY_FUNCTION__);
}
It's not clear how much of the KMLViewer sample app code you're using but one way to do this is to create your own annotation class instead of using the MKPointAnnotation class like the sample app does.
The custom class (eg. "PlacemarkAnnotation"), should implement the MKAnnotation protocol or be a sub-class of MKShape (if you are using the KMLViewer code). In the custom class, add a placemarkDescription property.
Where the KMLViewer code currently creates an MKPointAnnotation object, create a PlacemarkAnnotation instead and set its placemarkDescription property instead of the subtitle property.
Then in the viewForAnnotation delegate method, set the rightCalloutAccessoryView to a detail disclosure button.
Next, add to the project a detail view controller with a UIWebView in it. Add a placemarkDescription property to the view controller. In the viewDidLoad method, call loadHTMLString on the web view and pass it placemarkDescription (I think you can pass nil for the baseURL).
In the map view's calloutAccessoryControlTapped delegate method, create the detail view controller, set its placemarkDescription property and present it:
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view
calloutAccessoryControlTapped:(UIControl *)control
{
DetailViewController *dvc = [[DetailViewController alloc] init...
PlacemarkAnnotation *pa = (PlacemarkAnnotation *)view.annotation;
dvc.placemarkDescription = pa.placemarkDescription;
[self presentModalViewController:dvc animated:YES];
[dvc release];
}
Edit:
First, it looks like it will be best to subclass MKShape for your custom class instead of implementing the MKAnnotation protocol. The rest of the KMLViewer code is based on this assumption. So change #interface PlacemarkAnnotation2 : NSObject <MKAnnotation> to #interface PlacemarkAnnotation2 : MKShape. (By the way, for the NSString properties, copy is more appropriate than retain and it'll get rid of warnings.)
It also looks like you may have changed the type of the mkShape ivar in KMLPlacemark (and other places) from MKShape to something else. Change these types back to MKShape.
Next, _createShape might not be the best place to set the placemarkDescription since that method is called for both overlays and annotations. Remove your changes from that method and put them in the point method (also in KMLPlacemark). Note there are a couple of potential memory-related issues with your changes. Here's my suggestion:
- (void)_createShape
{
if (!mkShape) {
mkShape = [[geometry mapkitShape] retain];
mkShape.title = name;
// Skip setting the subtitle for now because they're frequently
// too verbose for viewing on in a callout in most kml files.
}
}
- (id <MKAnnotation>)point
{
[self _createShape];
if ([mkShape isKindOfClass:[PlacemarkAnnotation2 class]])
{
if (placemarkDescription != nil)
//check for nil, otherwise will crash when
//passing to stringByAppendingString below
{
NSString *lessThan = #"<";
NSString *greaterThan = #">";
placemarkDescription = [placemarkDescription stringByReplacingOccurrencesOfString:lessThan
withString:#"<"];
placemarkDescription = [placemarkDescription stringByReplacingOccurrencesOfString:greaterThan
withString:#">"];
NSString *beforeBody = #"<html><body>";
NSString *afterBody = #"</body></html>";
NSString *finalContent = [[beforeBody stringByAppendingString:placemarkDescription]
stringByAppendingString:afterBody];
placemarkDescription = [finalContent retain];
//added retain above since finalContent is autoreleased
//and we are setting the ivar manually. otherwise,
//can result in EXC_BAD_ACCESS later.
}
PlacemarkAnnotation2 *pa2 = (PlacemarkAnnotation2 *)mkShape;
pa2.placemarkDescription = placemarkDescription;
return (id <MKAnnotation>)mkShape;
}
return nil;
}
I am working on an app that receives a feed that I display in a UIWebView. The feed has embedded links that I want to open in Safari instead of thew WebView. I have looked over several other questions that are posted here. I am not sure what I am missing, but I think it is something simple. Here are my .h and .m files
#import
#class BlogRss;
#interface EnduranceDailyWorkoutViewController : UIViewController {
IBOutlet UIWebView * descriptionTextView;
BlogRss * currentlySelectedBlogItem;
}
#property (nonatomic, retain) UIWebView * descriptionTextView;
#property (readwrite, retain) BlogRss * currentlySelectedBlogItem;
#end
#import "EnduranceDailyWorkoutViewController.h"
#import "BlogRss.h"
#implementation EnduranceDailyWorkoutViewController
#synthesize descriptionTextView = descriptionTextView;
#synthesize currentlySelectedBlogItem = currentlySelectedBlogItem;
- (void)viewDidLoad {
[super viewDidLoad];
NSString *html = [NSString stringWithFormat:#"%# %#",currentlySelectedBlogItem.title, currentlySelectedBlogItem.contentEncoded];
[descriptionTextView loadHTMLString:html baseURL:[NSURL URLWithString:nil]];
}
-(BOOL)webView:(UIWebView *)descriptionTextView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
if (UIWebViewNavigationTypeLinkClicked == navigationType) {
[[UIApplication sharedApplication] openURL:[request URL]];
return NO;
}
return YES;
}
Using Interface Builder I have linked the IBOutlet and the UIWebView. Please let me know what I am missing. I have put break points in the webView section but the code never hits there so it is almost like something is not linked correctly in IB.
You need to ensure that the UIWebView's delegate is set to your controller. You can do this in interface builder, or you can modify your viewDidLoad method:
- (void)viewDidLoad {
[super viewDidLoad];
// add this line to set the delegate of the UIWebView
descriptionTextView.delegate = self;
NSString *html = [NSString stringWithFormat:#"%# %#",currentlySelectedBlogItem.title, currentlySelectedBlogItem.contentEncoded];
[descriptionTextView loadHTMLString:html baseURL:[NSURL URLWithString:nil]];
}
i know this is a very common question, i read most of the questions asked in stackoverflow but still couldn't figure out how to remove the uiactivityindicatorview from the view.
please find below the code
#implementation FeedBackViewController
#synthesize m_activity,webView;
-(void)viewDidLoad{
[super viewDidLoad];
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://equinox.library.pitt.edu/limesurvey/index.php?sid=87435&lang=en"]]];
}
- (void)dealloc {
[m_activity release];
[webView release];
[super dealloc];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
[m_activity stopAnimating];
[m_activity removeFromSuperview];
m_activity = nil;
}
- (void)webViewDidStartLoad:(UIWebView *)webView {
NSLog(#"in webViewDidFinishLoad")
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
m_activity.center = self.view.center;
[self.view addSubview: m_activity];
[m_activity startAnimating];
}
the header file
#interface FeedBackViewController : UIViewController<UIWebViewDelegate>{
IBOutlet UIWebView *webView;
IBOutlet UIActivityIndicatorView *m_activity;
}
#property (nonatomic, retain) IBOutlet UIWebView *webView;
#property (nonatomic, retain) UIActivityIndicatorView *m_activity;
Also, i have checked the box in the IB that says, hide when stopped. I put NSLog(#"in webViewDidFinishLoad") in the webViewFinishLoad method, seems like it does not hit that method for some reason.
and for
NSLog(#"m_activity = %#",m_activity);
in the viewDidLoad method, it gives a message as below in the console
> m_activity = <UIActivityIndicatorView:
> 0x4d3d920; frame = (150 79; 20 20);
> hidden = YES; opaque = NO; autoresize
> = RM+BM; layer = <CALayer: 0x4d35ce0>>
Your webViewDidFinishLoad function is probably not being called. It may happen if the web view fails to open the url. In any case, you should also implement webView:didFailLoadWithError: method and stop the activity indicator there too.
-edit-
To receive events from UIWebView you need to set the controller as the UIWebView's delegate. Just implementing the UIWebViewDelegate is not sufficient. You can do this by updating viewDidLoad method as follows:
-(void)viewDidLoad{
[super viewDidLoad];
webView.delegate = self;
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://equinox.library.pitt.edu/limesurvey/index.php?sid=87435&lang=en"]]];
}
You should add NSLog(#"in webViewDidFinishLoad") lines to your code and watch the console to see if the code hits those points. Since this is a very simple example, perhaps m_activity is not connected to the actual object? Try to see if you get an address or a null when you add this to the end of your viewDidLoad:
NSLog(#"m_activity = %#",m_activity);
Is there a way to manually set low-level still-camera settings like shutter speed, aperture, or ISO in iOS4 on the iPhone 4? I don't think it exists in the official SDK but perhaps someone has found some private APIs to allow this?
I find my iPhone 4 camera to be unusable because even in fairly decent lighting, it always insists on shooting at the slowest 1/15th a second shutter speed causing motion blur if the subject is moving at all.
Thanks!
Not directly. Please file a bug report.
Yes, there may be private APIs available, but that's of limited use.
Try this, I could be useful for you:
#interface MyViewController ()
#property (nonatomic, retain) IBOutlet UIImageView *imageView;
#property (nonatomic, retain) IBOutlet UIToolbar *myToolbar;
#property (nonatomic, retain) OverlayViewController *overlayViewController;
#property (nonatomic, retain) NSMutableArray *capturedImages;
// toolbar buttons
- (IBAction)photoLibraryAction:(id)sender;
- (IBAction)cameraAction:(id)sender;
#end
#implementation MyViewController
- (void)viewDidLoad
{
self.overlayViewController =
[[[OverlayViewController alloc] initWithNibName:#"OverlayViewController" bundle:nil] autorelease];
// as a delegate we will be notified when pictures are taken and when to dismiss the image picker
self.overlayViewController.delegate = self;
self.capturedImages = [NSMutableArray array];
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
// camera is not on this device, don't show the camera button
NSMutableArray *toolbarItems = [NSMutableArray arrayWithCapacity:self.myToolbar.items.count];
[toolbarItems addObjectsFromArray:self.myToolbar.items];
[toolbarItems removeObjectAtIndex:2];
[self.myToolbar setItems:toolbarItems animated:NO];
}
}
- (void)viewDidUnload
{
self.imageView = nil;
self.myToolbar = nil;
self.overlayViewController = nil;
self.capturedImages = nil;
}
- (void)dealloc
{
[_imageView release];
[_myToolbar release];
[_overlayViewController release];
[_capturedImages release];
[super dealloc];
}
- (void)showImagePicker:(UIImagePickerControllerSourceType)sourceType
{
if (self.imageView.isAnimating)
[self.imageView stopAnimating];
if (self.capturedImages.count > 0)
[self.capturedImages removeAllObjects];
if ([UIImagePickerController isSourceTypeAvailable:sourceType])
{
[self.overlayViewController setupImagePicker:sourceType];
[self presentModalViewController:self.overlayViewController.imagePickerController animated:YES];
}
}
- (IBAction)photoLibraryAction:(id)sender
{
[self showImagePicker:UIImagePickerControllerSourceTypePhotoLibrary];
}
- (IBAction)cameraAction:(id)sender
{
[self showImagePicker:UIImagePickerControllerSourceTypeCamera];
}
// as a delegate we are being told a picture was taken
- (void)didTakePicture:(UIImage *)picture
{
[self.capturedImages addObject:picture];
}
// as a delegate we are told to finished with the camera
- (void)didFinishWithCamera
{
[self dismissModalViewControllerAnimated:YES];
if ([self.capturedImages count] > 0)
{
if ([self.capturedImages count] == 1)
{
// we took a single shot
[self.imageView setImage:[self.capturedImages objectAtIndex:0]];
}
else
{
// we took multiple shots, use the list of images for animation
self.imageView.animationImages = self.capturedImages;
if (self.capturedImages.count > 0)
// we are done with the image list until next time
[self.capturedImages removeAllObjects];
self.imageView.animationDuration = 5.0; // show each captured photo for 5 seconds
self.imageView.animationRepeatCount = 0; // animate forever (show all photos)
[self.imageView startAnimating];
}
}
}
#end