I try to use WKWebView to display a link pdf, it works, but when I check the view hierarchy, I found this cause an invisible keyboard window, and an auto layout issue. because this a system issue, I do not know how to fix it.
this is my code:
self.webView = [[WKWebView alloc]initWithFrame:self.view.bounds configuration:configuration];
_webView.backgroundColor = [UIColor clearColor];
_webView.allowsBackForwardNavigationGestures =YES;
_webView.scrollView.decelerationRate = UIScrollViewDecelerationRateNormal;
[self.view addSubview:self.webView];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[#"https://xxxxxxx.pdf" stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]]]];
[_webView loadRequest:request];
this is the Debug view Hierarchy:
enter image description here
this is the auto layout issue:
enter image description here
Related
I encountered a problem that after I upgraded my phone to iOS 10 beta 3, when I zoom a WKWebView in my app, the zooming function not only zoom the content of the web page but also the page itself.
See the image I attached. WKWebView that fails to zoom correctly. I set the background color of the WKWebView to blue, when I pinch to zoom out the view, the page(container?) itself also zoomed out, causing unfavorable result. It does not happen in iOS9. When I do the same thing, the blue background does not show.
The web page is written in AngularJS and the Graph lib is d3js.
The related code are as below.
-(void) reloadWebPage{
[activityIndicator startAnimating];
NSString *indexToPath = [self getIndexHtmlPath];
NSURL *fileUrl = [NSURL fileURLWithPath:indexToPath];
NSURL *absoluteUrl = fileUrl.absoluteURL;
if(currentGroup == nil){
currentGroup = #"0";
}
NSString *absoluteString = [[absoluteUrl absoluteString] stringByAppendingFormat:#"%#%#", #"?currentGroup=", currentGroup];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:absoluteString] ];
[webView loadRequest:request];
}
- (void)createWebView{
WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];
[config.userContentController addScriptMessageHandler:self name:#"interOp"];
webView = [[WKWebView alloc] initWithFrame:self.view.frame configuration:config];
[webView setBackgroundColor:[UIColor blueColor]];
[webView setNavigationDelegate:self];
[webView setUIDelegate:self];
}
I have no clue where is the problem? Is it in Objective C,iOS10 or in Javascript?
Please suggest, How can I resolve this problem?
Thank you
Ok, I resolved this problem by disabling zooming and scrolling in WKWebView.
webView.scrollView.scrollEnabled = false;
- (UIView*) viewForZoomingInScrollView:(UIScrollView *)scrollView{
return nil;
}
After these code are added, the WKWebView itself no longer zooming and moving while the nodes move and zoom normally.
It seems the problem somewhat related to Disable magnification gesture in WKWebView, but
I still don't know what caused the change from iOS9 to iOS10. But it seems to work for me.
I have tried to load 40 UIWebview in uiscrollview. user scroll more than 5. Recieved memory warning alert comes continuously, finally application quit.
How to manage this memory issue, please let me know.
Thanks in Advance
I tried this:
Description: Load one by one webview are added in UIScrollview because i have tried to load all webview using for loop single time but app crash in this for loop so doing add one by one process.
CGRect vFrame = self.view.frame;
UIWebView *wViewLocal = [[UIWebView alloc] initWithFrame:CGRectMake(vFrame.origin.x, vFrame.origin.y, vFrame.size.width, 900)];
wViewLocal.delegate = self;
wViewLocal.backgroundColor = [UIColor grayColor];
NSString *fileUrl = [[subSubChap objectAtIndex:selectedIndex] stringByReplacingOccurrencesOfString:#".htm" withString:#""];
[wViewLocal fileUrl baseURL:nil];
[wViewLocal setScalesPageToFit:YES];
[wViewLocal setContentMode:UIViewContentModeScaleToFill];
[wViewLocal setFrame:CGRectMake(selectedIndex*viewRect.size.width,0,768, 900)]; // here set X-Value each webview.
[wViewLocal setTag:selectedIndex];
[scroll_View addSubview:wViewLocal]; // Here i have add UIWebview
[self.array_MainObject addObject:wViewLocal]; // Here i have add all UIWebview in NSMutableArray for get particular webview info.
[wViewLocal release];
I am trying to display a pdf in a UIWebview using the entire screen of the device, except the status bar and top bar. So far, I created IBOutlet UIWebview *webview; in my .h file. I connected the webview in my storyboard and wrote the following code in my .m file:
- (void)viewDidLoad
{
[super viewDidLoad];
webview = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];
webview.scalesPageToFit = YES;
webview.autoresizesSubviews = YES;
webview.autoresizingMask=(UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth);
[webview setBackgroundColor:[UIColor clearColor]];
NSString *path = [[NSBundle mainBundle] pathForResource:#"Chart" ofType:#"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webview loadRequest:request];
[self.view addSubview:webview];
}
The pdf displays correctly in my 3.5 inch, but in my 4 inch display, the bottom is cut off. This is even more noticeable when I rotate to landscape view. About 33% of the screen is not used at all. How can I fix this? I know it must have something to do with the UIWebview dimensions in my code above (webview = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];), but is there a better way to simply display the webview on the entire screen, without specifying a specific screen height and width?
One cheap thing to do would be to set the frame of the webview in overriding - (void)viewDidLayoutSubviews
- (void)viewDidLayoutSubviews {
webView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
}
the advantage of doing it here, is that the size and orientation of the view has already been determined here, and you can get an accurate measurement.
Using Auto Layout
Be sure the "Constrain to margins" option is not checked, all constrain values are 0:
And your webview is a first child of your main view:
Without Auto Layout
Change webview autosizing connections:
After a lot of headache dealing with compatibility of iOS6, 7 and different screen sizes, I use this one:
- (void)viewDidLoad {
[super viewDidLoad];
self.webview = [[UIWebView alloc] init];
// More setting your webview here
// Set webview to full screen
self.view = self.webview;
[self.webview loadRequest:aRequest];
}
I was able to get this working correctly for me by selecting the Reset to Suggested Constraints under the Resolve Auto Layout Issues menu.
I am trying to view the web-page in UIWebView in iOS. Below is the link I am trying to view.
http://almaktab.com/forms/flight.html
The problem is width of table is 255px and when I open this in webview, it covers only half screen which looks odd. Below is the code I am using for viewing web page in UIWebView.
-(void)openWebPage:(NSString*)address {
NSURL*url=[NSURL URLWithString:address];
NSURLRequest*request=[NSURLRequest requestWithURL:url];
myWebView.scalesPageToFit = YES;
myWebView.autoresizingMask = UIViewAutoresizingFlexibleWidth;
myWebView.contentMode = UIViewContentModeScaleAspectFit;
myWebView.autoresizesSubviews = YES;
[myWebView loadRequest:request];
[myWebView setAutoresizingMask:(UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth)];
}
I want to stretch this webview so that form can fit for whole page.
I know solution for this would be width=100%, but client don't want to do any changes in their website now. Client asked to do changes in iOS only.
Any idea how this can be get done.
Screenshot (myWebView.scalesPageToFit = YES;)
Screenshot (myWebView.scalesPageToFit = NO;)
Try:
webView.scalesPageToFit = NO;
And in webViewDidFinishLoad:
[view stringByEvaluatingJavaScriptFromString:#"document.getElementById('table3').width='100%'"];
You should have not use AutoresizingMask.
I'm having problem of UIWebView: I create a webview at the ViewDidLoad, and a button to reload the page, and everytime I click the webview download a new picture but the height get longer and longer (url gives random picture).
//Here is how I create it
pubTop = [[UIWebView alloc] initWithFrame:CGRectMake(0, 44, 320, 70)];
[pubTop loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:URL_PUB_LEVEL4]]];
[pubTop setScalesPageToFit:YES];
pubTop.scrollView.scrollEnabled = NO;
and I do reload by: [pubTop reload];
I need help please!!!