So i'm using the MWFeedParser, which I think is a beautiful RSS feed app, but when clicking on a link it goes to Safari. I fear that a good portion of iPhone users are unaware of the fact that they can double-click on the iPhone's one and only button to view all open apps and go back to the RSS feed, and will thus get stuck. Therefore I'd rather use an in-app browser.
In other words, currently when I click on a link from MWFeedParser it goes to Safari; I prefer it goes to an in-app browser.
I have the browser class set up called WebViewController.
basically with [detailWebView loadRequest:[NSURLRequest requestWithURL:detailURL]];
So "detailURL" is what it will look for
What do I put in the DetailTableViewController instead of the sharedApplication code???
bummer nobody was able to answer...in case others are looking for how to do it, change the contents of didSelectRowAtIndexPath to
if (_webViewController == nil) {
self.webViewController = [[[WebViewController alloc] initWithNibName:#"WebViewController" bundle:[NSBundle mainBundle]] autorelease];
}
MWFeedItem *entry = [parsedItems objectAtIndex:indexPath.row];
_webViewController.entry = entry;
[self.navigationController pushViewController:_webViewController animated:YES];
// Deselect
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
Add a WebViewController;
the .m has
#import "WebViewController.h"
#import "MWFeedItem.h"
#implementation WebViewController
#synthesize webView = _webView;
#synthesize entry = _entry;
// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (void)viewWillAppear:(BOOL)animated {
NSURL *url = [NSURL URLWithString:_entry.link];
[_webView loadRequest:[NSURLRequest requestWithURL:url]];
}
- (void)viewWillDisappear:(BOOL)animated {
[_webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"about:blank"]]];
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc. that aren't in use.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[_entry release];
_entry = nil;
[_webView release];
_webView = nil;
[super dealloc];
}
And the .h has
#class MWFeedItem;
#interface WebViewController : UIViewController {
UIWebView *_webView;
MWFeedItem *_entry;
}
#property (retain) IBOutlet UIWebView *webView;
#property (retain) MWFeedItem *entry;
(Basically I just took the webview part of Ray Wenderlich's RSS feeder and threw it in to this one.)
Related
Update
I swapped out completely different code for pushViewController, and it is still crashing... seems like pushViewController is not the culprit. Here is what I added instead:
NSString *videoURL = [[NSString alloc] initWithFormat:#"http://www.vimeo.com/m/#/%#", videoID];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:videoURL]];
It opens up the URL in Safari, and then crashes.. wtf?
PushViewController crashes with no error in the console, but I do get an EXC_BAD_ACCESS error in Xcode. The crash doesn't happen until after the view controller has been pushed... but the view its pushing is empty... no code to mess up.
My code is below:
MainViewController.m
PlayVimeo *playTest = [[PlayVimeo alloc] initWithNibName:#"PlayVimeo" bundle:nil];
//playTest.videoID = videoID;
[self.navigationController pushViewController:playTest animated:YES];
[playTest release];
PlayVimeo.m
#import "PlayVimeo.h"
#import "SVProgressHUD.h"
#implementation PlayVimeo
#synthesize videoID, wView;
-(void)viewDidLoad {
[super viewDidLoad];
//Show loading alert
[SVProgressHUD showInView:self.view status:#"Loading Video..."];
}
-(void)viewWillAppear:(BOOL)animated {
NSLog(#"Play View Loaded!");
[self vimeoVideo];
}
-(void)vimeoVideo {
NSLog(#"Video ID: %#", videoID);
NSString *html = [NSString stringWithFormat:#"<html>"
#"<head>"
#"<meta name = \"viewport\" content =\"initial-scale = 1.0, user-scalable = no, width = 460\"/></head>"
#"<frameset border=\"0\">"
#"<frame src=\"http://player.vimeo.com/video/%#?title=0&byline=0&portrait=1&autoplay=1\" width=\"460\" height=\"320\" frameborder=\"0\"></frame>"
#"</frameset>"
#"</html>",
videoID];
NSLog(#"HTML String: %#", html);
[wView loadHTMLString:html baseURL:[NSURL URLWithString:#""]];
//Dismiss loading alert
[SVProgressHUD dismissWithSuccess:#"Playing..."];
}
- (void)viewDidUnload {
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
-(void)dealloc {
[super dealloc];
}
Navigation Controller Code:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
[Appirater appLaunched];
return YES;
}
Console on crash:
sharedlibrary apply-load-rules all
Current language: auto; currently objective-c
(gdb)
It's likely that the culprit is
[playTest release];
Without seeing the rest of your code, I would still say that you likely need to release this after you're done with the video.
The code can not be fixed, it seems. With the UIWebView class reference, there is an example program TransWeb. Take this as base, it has a window and a navigation controller with a webview in it (in the xib). In MyViewController it reads a html-file and displays it. What you need to do is to change the main view to landscape and replace the html-code with yours. Avoid the frame-stuff.
I'm getting memory leaks that i can't figure out through leaks, build/analyze or overall inspection how to repair. I have a very strong notion that it's due to the loadRequest command from my UIWebview loading javascript, but I can't figure out what's wrong.
Here's my setup:
I have a tabbarcontroller that i programatically create with 4 view controllers: a table view, a mapview, another table view and a webview, respectively.
the 1st tableview shows static data.
the mapview shows annotations that when clicked populates a variable of the 4th tab, the webview, and switches to the webview to display a locally stored html/javascript file that is a 3d model
the 2nd tableview is a listing of all the same information each annotation in the mapview represents, just in table form. it has the same functionality in terms of populating the variable, switching and displaying the html/javascript file in the webview
the webview displays the html/javascript file loaded, if not it shows a UIAlertView to select one from the mapview or the list
when i finally get to executing the loadRequest() from the webview, initially everything works fine. however, when i begin to switch between tabs and view different 3d models (i.e. go to the map view click an annotation to show say model x, watch it load in the webview, then switch to the listing table and click a row to show model y (or x too) and watch it load in the webview) i start receiving memory leaks on the ipad, not the simulator. these memory leaks are almost always: General-Block 56, 1024, 8, 244 & 24 and have no responsible frames, libraries or stack traces to follow up with.
in the webview if i comment out the loadrequest line or do a loadrequest with the request object = nil, i have no memory leaks, but when i switch to using a url object that points to the local files (i even tried pointing it to google.com, which has javascript) it erupts in memory leaks.
i've attempted to do each of these:
[self.webView loadRequest:nil];
[self.webView loadHTMLString:#"" baseURL:nil];
[self.webView stopLoading];
in viewWillDisappear of my webViewController in attempt to completely clean out the webview for reuse in the future, but it doesn't seem to be doing much help. i've also attempted doing this prior to doing the loadRequest but i get the same memory leaks.
fyi, i'm running the latest xcode 4.0.2 and the ipad has the latest update, 4.3.2
from a previous post i commented on and haven't heard back from (general-block memory leak) i believe the problem has to do with the fact that webview doesn't know how to fully rid itself of the javascript when i switch views
i did a test with a simple html file with no javascript and the general-block memory leaks are gone. however, i get other cfnetwork / http message memory leaks but that's a different story and not of my concern at the moment.
below is example code of when one of the annotations on the mapView is clicked which triggers the loadModel function in the webViewController:
- (void) mapCallOutPressed: (UIView *) sender {
NSInteger selectedIndex = sender.tag;
MyLocation *selectedObject = [_mapView.annotations objectAtIndex:selectedIndex];
MyModel *model = selectedObject.model;
NSLog(#"Model selected from mapview = %#", model.description);
// Get reference to the webview from the tabBarController (viewController's index=3)
WebViewController *webViewController = [self.tabBarController.viewControllers objectAtIndex:3];
webViewController.model = model;
[webViewController loadModel];
// Switch tabs to the webView
self.tabBarController.selectedIndex = 3;
[self.tabBarController.selectedViewController viewDidAppear:YES];
below is my webViewController.h & .m:
WebViewController.h:
WebViewController : UIViewController <UIWebViewDelegate> {
UIWebView *webView;
NSString *templateRunFilePath;
MyModel *model;
NSString *templateRunTitle;
#property (nonatomic, retain) UIWebView *webView;
#property (assign) MyModel *model;
#property (nonatomic, copy) NSString *templateRunFilePath;
#property (nonatomic, copy) NSString *templateRunTitle;
-(void) loadModel;
WebViewController.m:
- (void) viewDidLoad {
[super viewDidLoad];
NSLog(#"in webview did load");
self.webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height)];
self.webView.delegate = self;
self.webView.autoresizingMask=(UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth);
self.webView.scalesPageToFit = YES;
[self.view addSubview:self.webView];
}
- (void) viewWillAppear:(BOOL)animated {
if (self.model) {
self.tabBarController.navigationItem.title = [NSString stringWithFormat: #"%# - %#", self.tabBarController.navigationItem.title, self.model.description];
}
else {
UIAlertView *msg = [[UIAlertView alloc] initWithTitle:#"No Model Selected"
message:#"Please select a model from the map or list tab to view."
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[msg show];
[msg release];
}
}
- (void) loadModel {
NSString *localURLPath = [NSString stringWithFormat:#"%#/%#/%#", self.templateRunFilePath, self.model.folderName, self.model.modelFileName];
NSURL *url = [NSURL fileURLWithPath:localURLPath];
NSURLRequest *requestObj = [NSURLRequest requestWithURL: url];
[self.webView loadRequest:requestObj];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[[NSUserDefaults standardUserDefaults] setInteger:0 forKey:#"WebKitCacheModelPreferenceKey"];
}
-(void)viewWillDisappear:(BOOL)animated {
NSLog(#"webview view will disappear");
[super viewWillDisappear:animated];
//[self.webView loadRequest:nil];
//[self.webView loadHTMLString:#"" baseURL:nil];
self.webView.delegate = nil;
}
- (void)dealloc {
self.webView.delegate = nil;
[self.webView release];
[super dealloc];
}
if you have any advice or corrections, i'd greatly appreciate it. i have < 1 week to figure this out and would highly thank you if you could give me any insight.
thanks!
-Mike
Mike, I am not sure whether you are doing following intentionally or by mistake?
- (void) loadModel {
[self.webView loadHTMLString:#"" baseURL:nil]; // here you are loading... or you have tried with commenting it also?
NSString *localURLPath = [NSString stringWithFormat:#"%#/%#/%#", self.templateRunFilePath, self.model.folderName, self.model.modelFileName];
NSURL *url = [NSURL fileURLWithPath:localURLPath];
NSURLRequest *requestObj = [NSURLRequest requestWithURL: url];
[self.webView loadRequest:requestObj]; // again here you are also loading?
}
UPDATED QUESTION:
Hello , so I was able to create the modal view curl up overlay for this use. However I now have the issue that I can click on the button1 and pull up second view with the url1 on webView1, but when I click button2 I receive the display of url1 on webview also. below is the code can you help me out on what I'm doing wrong?
FourthViewController.h has the following code:
'
#import <UIKit/UIKit.h>
#interface FourthViewController : UIViewController {
UIButton *openBlogButton, *openFbButton, *openYelpButton;
}
#property (nonatomic, retain) IBOutlet UIButton *openBlogButton, *openFbButton, *openYelpButton;
-(IBAction)openBlog:(id)sender;
-(IBAction)openFacebook:(id)sender;
-(IBAction)openYelp:(id)sender;
#end
'
FourthViewController.m has the following code:
'
#import "FourthViewController.h"
#import "FourthBlogWebViewController.h"
#import "FourthFBWebViewController.h"
#implementation FourthViewController
#synthesize openBlogButton, openFbButton, openYelpButton;
-(IBAction)openBlog:(id)sender {
FourthBlogWebViewController *sampleView = [[[FourthBlogWebViewController alloc] init] autorelease];
[sampleView setModalTransitionStyle:UIModalTransitionStylePartialCurl];
[self presentModalViewController:sampleView animated:YES];
}
//THIS IS WHERE I THINK THE ISSUE IS, WHEN I CLICK openFacebook it should lead to the fb URL, it seems as if I should be able to list all possible urls on the first fourthwebviewcontroller, but i was not able to be successful so I tried making a second webview controller to feed it this url but this failed...lol. thnx for any input.
-(IBAction)openFacebook:(id)sender {
FourthFBWebViewController *sampleView = [[[FourthFBWebViewController alloc] init] autorelease];
[sampleView setModalTransitionStyle:UIModalTransitionStylePartialCurl];
[self presentModalViewController:sampleView animated:YES];
}
-(IBAction)openYelp {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"http://www.yelp.com"]];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidUnload {
[super viewDidUnload];
}
- (void)dealloc {
[openBlogButton release];
[openFbButton release];
[openYelpButton release];
[super dealloc];
}
#end
'
FourthBlogWevViewController.h
'
#import <UIKit/UIKit.h>
#interface FourthBlogWebViewController : UIViewController {
UIButton *dismissViewButton;
IBOutlet UIWebView *webViewFB;
}
#property (nonatomic, retain) IBOutlet UIButton *dismissViewButton;
#property (nonatomic, retain) UIWebView *webViewFB;
- (IBAction)dismissView:(id)sender;
#end'
FourthBlogWebViewController.m code:
'#import "FourthBlogWebViewController.h"
#implementation FourthBlogWebViewController
#synthesize dismissViewButton, webViewFB;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
}
return self;
}
-(IBAction)dismissView:(id)sender {
[self dismissModalViewControllerAnimated:YES];
}
- (void)viewDidLoad {
NSString *urlAddress = #"http://www.facebook.com";
NSURL *url = [NSURL URLWithString:urlAddress];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[webViewFB loadRequest:requestObj];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidUnload {
[super viewDidUnload];
}
- (void)dealloc {
[dismissViewButton release];
[webViewFB release];
[super dealloc];
}
#end
Where or how would I add the second url and have it distinguis on click of other buttons. Thank you in advance for the ongoing help.
Original Question:
Hello,
So first app and I'm trying to make some basic function use of buttons, Im doing this in a tab bar application. On my fourth tab view a view opens with 3 buttons, on the click of the button I am trying to get a webpage to load within the app (i was able to successfully make the webpages open via safari on button touchup inside click, but that is not how I want it to load. So I edited the way it loads and on push of button the website is now opening within the webView. However I want to create this webview on a new view rather then on the same view where the 3 buttons are, but I'm not clear on how to do this. Any input would be greatly appreciated (I apologize beforehand since this seems as an easy task, but haven't figured it out yet, I did some searching before asking, but was unable to find anything that showed how to do this on push of different button to load webview on a new view within the same XIB.
Thanks.
Below is the code that I have for the load of webview on push of button.
On fourthviewcontroller.h
#import <UIKit/UIKit.h>
#interface FourthViewController : UIViewController {
IBOutlet UIWebView *webView;
}
-(IBAction)openWebsite:(id)sender;
-(IBAction)openButton2;
-(IBAction)openButton3;
#property (nonatomic, retain) UIWebView *webView;
#end
On fourthviewcontroller.m
#import "FourthViewController.h"
#implementation FourthViewController
#synthesize webView;
-(IBAction)openWebsite:(id)sender{
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://www.URL.com"]]];
}
-(IBAction)openButton2:(id)sender{
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://www.URL2.com"]]];
}
-(IBAction)openButton3:(id)sender{
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://www.URL3.com"]]];
}
Basically I'm trying to get different buttons to push to the same new view but the only difference is that i want the uiwebview to display a different URL depending on the button click that bring the new view.
As NWCoder mention, it depends how you like the new webview to be shown.
Display in UINavigationController-
Make your fourth tab a uinavigationcontroller and set the 3 button view controller as the top most view controller.
Create a new UIViewController that encapsulate the UIWebView.
When user click on the open webview button, create and push the uiviewcontroller that contains the uiwebview
Display in modal view:
Create a new UIViewController that encapsulate the UIWebView.
When user click on the open webview button, create and push the webview uiviewcontroller by calling the fourth's tab uiviewcontroller presentModalViewController:animated.
I currently have the following code that loads a UIWebView from another View. Now is there anyway I can have a close button?
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UIWebView *webView=[[UIWebView alloc] initWithFrame:CGRectMake(0,0,320,480)];
[self.view addSubview:webView];
NSURLRequest *urlRequest;
NSURL *urlforWebView;
urlforWebView=[NSURL URLWithString:#"http://www.google.com"];
urlRequest=[NSURLRequest requestWithURL:urlforWebView];
[webView loadRequest:urlRequest];
}
I am going to load a page built using jquery mobile, so a close button inside the page would also work fine. But on a navigation bar would be ideal. Btw, my application does not have a UINavigationBar
I would create a new sub class of UIViewController, say WebViewController with a nib. Then I would add an UINavigationBar with a close button and an UIWebView. Then to show your web view controller you can do something like:
WebViewController *webViewController = [[WebViewController alloc] init];
webViewController.loadURL = [NSURL URLWithString:#"http://www.google.com"];
[self presentModalViewController:webViewController animated:YES];
[webViewController release];
In your WebViewController you can define:
#property (nonatomic, retain) IBOutlet UIWebView *webView;
#property (nonatomic, retain) NSURL *loadURL;
- (IBAction)close:(id)sender;
and implement something like this:
- (void)viewDidLoad {
[super viewDidLoad]
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:self.loadURL];
[self.webView loadRequest:urlRequest];
}
- (IBAction)close:(id)sender {
[self dismissModalViewControllerAnimated:YES];
}
Whenever you load the UIWebView, you could run a javascript snippet on the content first.
[webView stringByEvaluatingJavaScriptFromString:#"window.close = function() { window.location = 'app://close-webview'; };"];
That just hijacks the normal behavior of window.close() and gives you chance to catch the call in your Objective-C.
Then in your UIWebViewDelegate you could listen for whatever you chose as the close url.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
if([request.URL.absoluteString isEqualToString:#"app://close-webview"]) {
webView.hidden = YES;
// or whatever you want to do to remove the UIWebView...
return NO;
}
return YES;
}
A bit hackish, but it would allow the web developer to control the look and feel of the close button from within the HTML content.
If I am playing a sound in one view, does anyone know if it is possible to control the volume from another, if it is can someone explain how? I can't figure it out, I have no code to show for the volume.
The sound is called from one view and the volume slider is on another. I have coded both.
The code for the sound is
#import `<AVFoundation/AVAudioPlayer.h`>
#import "LeftViewController.h"
#implementation LeftViewController
- (IBAction)buttonrm:(id)sender
{
[self dismissModalViewControllerAnimated:YES];
}
- (IBAction)playl {
[theAudio play];
}
- (IBAction)pausel {
[theAudio pause];
}
/*
// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
// Custom initialization
}
return self;
}
*/
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
NSString *path =[[NSBundle mainBundle] pathForResource:#"The Noisettes - Never Forget You" ofType:#"mp3"];
theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
theAudio.delegate = self;
//[theAudio play];
[super viewDidLoad];
}
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft);
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
#end
the code for the slider is
- (void)viewDidLoad {
[super viewDidLoad];
CGRect sliderRect = CGRectMake(46,124,169,0);
UISlider *VolumeL = [[UISlider alloc] initWithFrame:sliderRect];
VolumeL.minimumValue = 0;
VolumeL.maximumValue = 100;
VolumeL.continuous = YES;
UIImage *sliderctrl = [UIImage imageNamed:#"VolumeL.png"];
//UIImage *stetchLeftTrack = [[UIImage imageNamed:#"volumel12.png"]
//stretchableImageWithLeftCapWidth:5.0 topCapHeight:0.0];
[VolumeL setThumbImage:sliderctrl forState:UIControlStateNormal];
//[VolumeL setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];
[VolumeL addTarget:self action:#selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
VolumeL.transform = CGAffineTransformRotate(VolumeL.transform, 270.0/180*M_PI);
[self.view addSubview:VolumeL];
[VolumeL release];
}
Use the delegate pattern
In the second view controller create a protocol called MyProtocol for example with one method:
- (void)didUpdateVolume:(NSUInteger)volume;
Also create a delegate instance variable to hold the delegate reference
#property (nonatomic, assign) id<MyProtocol> delegate;
And don't forget to synthesize it in the implementation.
When the volume value is updated you would send the value to the delegate
[self.delegate didUpdateVolume:newValue];
Back in the first controller adopt the MyProtocol protocol, implement didUpdateVolume, and set the value in your player.
Try using the Notification center.
http://blog.grio.com/2009/04/broadcasting-information-how-to-use-the-iphone-notification-center.html