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/*
File: WebViewController.m
Abstract: The view controller for hosting the UIWebView feature of this sample.
Version: 2.10
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Neither the name, trademarks, service marks or logos of Apple Inc. may
be used to endorse or promote products derived from the Apple Software
without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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*/
#import "WebViewController.h"
#import "Constants.h"
@implementation WebViewController
@synthesize myWebView;
- (void)dealloc
{
myWebView.delegate = nil;
[myWebView release];
[super dealloc];
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = NSLocalizedString(@"WebTitle", @"");
CGRect webFrame = [[UIScreen mainScreen] applicationFrame];
webFrame.origin.y += kTopMargin + 5.0; // leave from the URL input field and its label
webFrame.size.height -= 40.0;
self.myWebView = [[[UIWebView alloc] initWithFrame:webFrame] autorelease];
self.myWebView.backgroundColor = [UIColor whiteColor];
self.myWebView.scalesPageToFit = YES;
self.myWebView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
self.myWebView.delegate = self;
[self.view addSubview:self.myWebView];
CGRect textFieldFrame = CGRectMake(kLeftMargin, kTweenMargin,
self.view.bounds.size.width - (kLeftMargin * 2.0), kTextFieldHeight);
UITextField *urlField = [[UITextField alloc] initWithFrame:textFieldFrame];
urlField.borderStyle = UITextBorderStyleBezel;
urlField.textColor = [UIColor blackColor];
urlField.delegate = self;
urlField.placeholder = @"<enter a URL>";
urlField.text = @"http://www.apple.com";
urlField.backgroundColor = [UIColor whiteColor];
urlField.autoresizingMask = UIViewAutoresizingFlexibleWidth;
urlField.returnKeyType = UIReturnKeyGo;
urlField.keyboardType = UIKeyboardTypeURL; // this makes the keyboard more friendly for typing URLs
urlField.autocapitalizationType = UITextAutocapitalizationTypeNone; // don't capitalize
urlField.autocorrectionType = UITextAutocorrectionTypeNo; // we don't like autocompletion while typing
urlField.clearButtonMode = UITextFieldViewModeAlways;
[urlField setAccessibilityLabel:NSLocalizedString(@"URLTextField", @"")];
[self.view addSubview:urlField];
[urlField release];
[self.myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.apple.com/"]]];
}
// called after the view controller's view is released and set to nil.
// For example, a memory warning which causes the view to be purged. Not invoked as a result of -dealloc.
// So release any properties that are loaded in viewDidLoad or can be recreated lazily.
//
- (void)viewDidUnload
{
[super viewDidUnload];
// release and set to nil
self.myWebView = nil;
}
#pragma mark -
#pragma mark UIViewController delegate methods
- (void)viewWillAppear:(BOOL)animated
{
self.myWebView.delegate = self; // setup the delegate as the web view is shown
}
- (void)viewWillDisappear:(BOOL)animated
{
[self.myWebView stopLoading]; // in case the web view is still loading its content
self.myWebView.delegate = nil; // disconnect the delegate as the webview is hidden
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// we support rotation in this view controller
return YES;
}
// this helps dismiss the keyboard when the "Done" button is clicked
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
[self.myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[textField text]]]];
return YES;
}
#pragma mark -
#pragma mark UIWebViewDelegate
- (void)webViewDidStartLoad:(UIWebView *)webView
{
// starting the load, show the activity indicator in the status bar
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
}
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
// finished loading, hide the activity indicator in the status bar
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
}
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
// load error, hide the activity indicator in the status bar
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
// report the error inside the webview
NSString* errorString = [NSString stringWithFormat:
@"<html><center><font size=+5 color='red'>An error occurred:<br>%@</font></center></html>",
error.localizedDescription];
[self.myWebView loadHTMLString:errorString baseURL:nil];
}
@end