Utilize various style sheets for web viewing on iOS 7 or iOS 8 devices

I have a mobile application that utilizes a WebView to showcase text and images. For iOS 8, I need to set the margin and padding values to 0px in order to properly display the HTML page. However, for iOS 7 compatibility, the margin and padding must be adjusted to 4px.

Is there a way to automatically adjust the layout based on the iOS version?

The goal is to dynamically set the padding and margin to 0px for iOS 8 and 4px for iOS 7. Below is my current stylesheet stored in an NSString:

NSString *stylesheet=@"<html><head><style>body { margin: 0; padding: 0; }h1{font-weight:normal;font-family: HelveticaNeue-Thin; padding: 7px; margin-bottom: 3px;}p{font-family: HelveticaNeue-Light; padding-top:0px; padding-left: 7px;paddin-right: 7px; margin-top:10px;}imgcenter {display: block; margin: 0 auto;}b{font-weight:normal;font-family: HelveticaNeue-Medium;}</style></head><body>";
    NSString *footer=@"</body></html>";

    [super viewDidLoad];
    NSString *fullURL = [NSString stringWithFormat:@"%@%@%@",stylesheet, self.SelectedProduct.content, footer];
   NSString *path = [[NSBundle mainBundle] bundlePath];
    NSURL *baseURL = [NSURL fileURLWithPath:path];
    [_webview loadHTMLString:fullURL baseURL:baseURL];

Answer №1

By implementing conditional statements and checking the system version, I was able to resolve the issue.

Here is the updated code:

#define SYSTEM_VERSION_EQUAL_TO(v)                  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v)              ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v)                 ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v)     ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

Additionally,

- (void)viewDidLoad{

    if (SYSTEM_VERSION_LESS_THAN(@"8.0")) {
          NSString *stylesheet=@"<html><head><style>body { margin: 4px; padding: 4px; margin-top:0px}h1{font-weight:normal;font-family: HelveticaNeue-Thin; padding: 7px; margin-bottom: 3px; padding-top:0px;}p{font-family: HelveticaNeue-Light; padding-top:0px; padding-left: 7px;paddin-right: 7px; margin-top:10px;}imgcenter {display: block; margin: 0 auto;}b{font-weight:normal;font-family: HelveticaNeue-Medium;}</style></head><body>";
        NSString *footer=@"</body></html>";

        [super viewDidLoad];
        NSString *fullURL = [NSString stringWithFormat:@"%@%@%@",stylesheet, self.SelectedProduct.content, footer];
        NSString *path = [[NSBundle mainBundle] bundlePath];
        NSURL *baseURL = [NSURL fileURLWithPath:path];
        [_webview loadHTMLString:fullURL baseURL:baseURL];
    }

    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"8.0")) {
          NSString *stylesheet=@"<html><head><style>body { margin: 0px; padding: 0px; margin-top:0px}h1{font-weight:normal;font-family: HelveticaNeue-Thin; padding: 7px; margin-bottom: 3px; }p{font-family: HelveticaNeue-Light; padding-top:0px; padding-left: 7px;paddin-right: 7px; margin-top:10px;}imgcenter {display: block; margin: 0 auto;}b{font-weight:normal;font-family: HelveticaNeue-Medium;}</style></head><body>";
        NSString *footer=@"</body></html>";

        [super viewDidLoad];
        NSString *fullURL = [NSString stringWithFormat:@"%@%@%@",stylesheet, self.SelectedProduct.content, footer];
        NSString *path = [[NSBundle mainBundle] bundlePath];
        NSURL *baseURL = [NSURL fileURLWithPath:path];
        [_webview loadHTMLString:fullURL baseURL:baseURL];
    }

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

What is the best way to ensure a consistent spacing between two flex items?

I am working on a project to enhance my knowledge by rebuilding Facebook. One of the new concepts I am learning is Flexbox. When you resize the login page of Facebook, you'll notice that the Navigation shrinks but the logo and login inputs remain sta ...

Modern UI Styling for ASP.NET MVC with Metro Design

I am interested in incorporating the METRO UI CSS into my application: Begin by creating an ASP NET MVC Project To download METRO UI MVC, follow these steps: Package Manager Console: PM> Install-Package Metro.UI.CSS Adjust the bundles to incl ...

What is the best way to adjust the size of a kendo ui combobox?

Is there a way to adjust the width of the kendo ui combobox? My current version is 2012.3.1114 I've attempted to modify it using the following CSS: #options { padding: 30px; } #options h3 { font-size: 1em; font-weight: bold; margin: 2 ...

Should we consider using extra url query parameters as a legitimate method to avoid caching or enforce the updating of css/js files?

Is it acceptable to include extra URL query parameters in order to avoid caching or enforce the updating of CSS/JS files? /style.css?v=1 Or would it be preferable to rename the file/directory instead? /style.1.css I've heard that this could potent ...

What is the most effective method for incorporating a floating section next to a Susy gallery?

Check out my latest progress on the codepen here The number of items displayed in the gallery is dynamic based on search results. However, I am looking to add a fixed area to the right side that remains visible as the user scrolls through the gallery. Ess ...

Default value for the Angular dropdown is conflicting with another value

I'm currently experiencing a problem with the angular dropdown directive I'm using for a custom select box. You can check out the dropdown's git repo here. Whenever I change the dropdown's value from any event, it replaces the value fo ...

Trigger an immediate Primefaces update using a JavaScript function

Having an issue where: upon page load, I attach a 'keypress' event listener to every input field on the page. The goal is to check for special characters in the input and remove them. Below is the function that executes on page load: function ...

Icon Searchbar Feature in Ionic 2

I am currently working with Ionic2 and have integrated the ion-searchbar component into my project: https://i.sstatic.net/CqmF4.png Question Would it be possible to customize the search icon? The default icon is a magnifying glass, but I would like to r ...

Limits of the window in a d3 network diagram

I'm currently working with a network diagram that consists of circle elements and lines connecting them. However, I've run into an issue where sometimes there are so many circles that they extend beyond the edge of my screen (see image attached). ...

What is the best way to enlarge icons and space them out evenly along a single line?

Would anyone be able to assist me in increasing the size of and separating these three icons that are close to each other using CSS3 in a single line? I am utilizing Bootstrap5 and Google Icons. <link href="https://fonts.googleapis.com/icon?family= ...

Restricting Options in jQuery/ajax选择列表

Although there are similar questions posted, my specific issue is that I am unsure of where to place certain information. My goal is to restrict the number of items fetched from a list within the script provided below. The actual script functions correct ...

tips for ensuring content is aligned at the bottom of the line

Struggling to align the content of two columns in a row at the same height? You're not alone! Here is the HTML and CSS code snippet using Bootstrap 5: <div class="row"> <div class="col-md-2" style="border: 1px sol ...

Challenge with Hovering within Cufon Elements

When utilizing multiple lists and hover states, the parent Cufon style takes over the child. For instance, in the scenario below, when hovering over the Second Level link, it will switch to a different weight. Is there a setting I can adjust to keep the n ...

Would it be practical to use a 1kb .png image on repeat as a background image?

I recently created a PNG image from the website . This image is only 1kb in size and I am currently using it as the background-image on the body tag of my webpage. Now, I am contemplating using another image that is significantly larger at 500kb (with dim ...

The console is not displaying the data from the useForm

I am working on a project to create a Gmail clone. I have implemented the useForm library for data validation. However, when I input data into the form and try to print it to the console, nothing is being displayed. const onSubmit = (data) => { ...

The issue with the custom select feature in beautiful soup 4 is causing malfunctions

Check out this Bootstrap 4 example: https://getbootstrap.com/docs/4.0/components/forms/#select-menu I've implemented it on my website: <select class="custom-select"> <option value="1">Telegram</option> <option value="2">W ...

D3: Ensuring Map is Scaled Correctly and Oriented Correctly

I am attempting to integrate a map into a website using D3 and topoJSON that resembles the following: https://i.sstatic.net/1brVx.png However, when I create the map with D3/topoJSON, it shows up small and inverted. https://i.sstatic.net/LgQBd.png Even ...

Change the selection so that only the initial one appears in gray

Is there a way to make the text inside a select field gray out when the first option is selected? Can this be accomplished with just CSS or does it require JS? I have attempted altering the style of the first option, but it only affects the text color in ...

The Infinite scroll feature in Fuel UX is ineffective when a specific height is not defined for the

In my current project, I am utilizing Bootstrap and Fuel UX v3.4.0 with the goal of implementing Infinite scroll throughout my entire page. Unfortunately, I have encountered difficulties in achieving this implementation. By replicating the infinite scroll ...

Occasionally, SpriteKit may encounter issues when attempting to load SKTexture

I've encountered a strange intermittent problem with SpriteKit and SKTexture preloading. My approach involves loading multiple arrays of images in a specific manner: - (NSDictionary *)loadTexturesWithNames:(NSArray *)aNames { NSMutableDictionary ...