I want to load GIF in my swift 3 application. I used this code to do that but the gif is not showed.
let filePath = Bundle.main.path(forResource: “myGif”, ofType: "gif")
let gif = NSData(contentsOfFile: filePath!)
self.webView.load(gif! as Data, mimeType: "image/gif", textEncodingName: String(), baseURL: NSURL() as URL)
self.webView.isUserInteractionEnabled = false
I don't know what is wrong with my code (I'm really new to swift and iOS development).
Any help please?
I found SwiftGif Lbrary from github, it doesn't use webview (if you want to use webview write me to comments to update the answer)
EDIT:
Webview:
let url = Bundle.main.url(forResource: "source", withExtension: "gif")!
let data = try! Data(contentsOf: url)
webview.load(data, mimeType: "image/gif", textEncodingName: "UTF-8", baseURL: NSURL() as URL)
webview.scalesPageToFit = true
webview.contentMode = UIViewContentMode.scaleAspectFit
Hope it helps.
Here is working example. I downloaded the gif image from web and added it to sample project.
let url = Bundle.main.url(forResource: "hsk", withExtension: "gif")!
let data = try! Data(contentsOf: url)
webView.load(data, mimeType: "image/gif", textEncodingName: "UTF-8", baseURL: NSURL() as URL)
With the code above, I could see the animated gif as below.
Related
i got show the pdf with next lines
webView.load(decodeData, mimeType: "application/pdf", characterEncodingName: "utf-8", baseURL: URL(fileURLWithPath: ""))
however i cant find the way to download it, how can i download it using a button the next lines are a little part
if let form = eDocument{
self.title = "Follow"
if let decodeData = Data(base64Encoded: form.content, options: .ignoreUnknownCharacters) {
let str = String(decoding: decodeData, as: UTF8.self)
webView.load(decodeData, mimeType: "application/pdf", characterEncodingName: "utf-8", baseURL: URL(fileURLWithPath: ""))
}
}
thanks
I am using Swift 4 & WKWebView. The HTML pages are included in the app (not downloaded from server).
For configuration purpose I would like to add parameters to the URL (e.g. ...index.html?debug=true).
Currently I am using the following approach to load the page:
let indexHTMLPath = Bundle.main.path(forResource: "f7Shoma/index", ofType: "html")
let url = URL(fileURLWithPath: indexHTMLPath!)
let request = URLRequest(url: url)
...
appWebView!.load(request)
How can parameters be added/passed to the page?
You can use URLComponents to create a URL with a query component:
var components = URLComponents(string: indexHTMLPath)
components?.queryItems = [URLQueryItem(name: "debug", value: "true")]
if let result = components?.url {
let request = URLRequest(url: url)
appWebView!.load(request)
}
I'm using an API that is returning a Base64 string, something like this:
data:application/pdf;base64,**BASE64STRING**
Where BASE64STRING is what I need to display the PDF.
So far I only created a Data object that gets the Base64 string:
let data = Data(base64Encoded: BASE64STRING)
And I tried to load it in the webview:
webView.load(data!, mimeType: "application/pdf", textEncodingName: "", baseURL: URL(string: "")!)
The problem is that I don't have a local PDF file, so I don't know what I should put in baseURL. Currently it's giving me a fatal error: unexpectedly found nil while unwrapping an Optional value
How can I load the PDF in the webView? Is there any better way to do that?
I solved the problem, despite that I'm not sure if it's a good approach, the solution is to put any valid URL in baseUrl:
webView.load(data!, mimeType: "application/pdf", textEncodingName: "", baseURL: URL(string: "https://www.google.com")!)
Try this
webView.load(data, mimeType: "application/pdf", textEncodingName: "utf-8", baseURL: URL(fileURLWithPath: ""))
First convert the base64String to NSData and then convert to Data and use it.
PDF files are binary files so they can't be represented as UITF8 encoded string directly.
if let data = NSData(base64Encoded: base64String, options: NSData.Base64DecodingOptions.ignoreUnknownCharacters) as Data? {
self.webView.load(data, mimeType: "application/pdf", characterEncodingName: "", baseURL: URL(fileURLWithPath: ""))
}
For Swift 5, here a complete example with no force unwrapped and temporary file:
guard let data = Data(base64Encoded: base64), let fileUrl = try? saveTemporaryFile(from: data, filename: fileName) else {
// error handling
return
}
webView.load(data, mimeType: "application/pdf", textEncodingName: "", baseURL: fileUrl)
And the utility function to save the data in local temp file:
func saveTemporaryFile(from data: Data, filename: String? = nil) throws -> URL {
let filename = filename ?? UUID().uuidString
let fileURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true).appendingPathComponent(filename)
try? FileManager.default.removeItem(at: fileURL)
try data.write(to: fileURL)
return fileURL
}
Swift 5+
Very Easy and Smooth Solution
let base64PDF = "m5hbWVfaWQiOiJ1aWQiLCJRSUQiOiIyNzg1ODYwNDM3NSIsIlVVSUQiOiIwMDE2M0U2Ri1EREMyLTFFRTktQUE5MS0wOEYxMDFEODU4NTYiLCJFbWFpbCI6IlNBSUYuUkVITUFOQEFBQlFBVEFSLkNPTSIs"
if let data = Data(base64Encoded: base64PDF, options: Data.Base64DecodingOptions.ignoreUnknownCharacters) as Data? {
self.webKitView.load(data, mimeType: "application/pdf", characterEncodingName: "", baseURL: nil)
}
I'm using Xcode 7.2 and Swift to create an iOS app, on this app I display the content of my website, however if I was offline the content will not be shown. So I want to cache the webpage and display for offline.
After I declared everything I'm using the following code :
var URLPATH="http://google.com"
let requestURL = NSURL(string: URLPATH)
let request = NSURLRequest(URL: requestURL!)
WB.loadRequest(request)
HTML to Data
if let url = URL(string: urlString) {
person.setValue(try? Data(contentsOf: url), forKey: "content_article")
}
Data to WebView
if let savedObject = fetchedObjects?.first,
let data = savedObject.content_article as? Data,
let baseStringUrl = savedObject.content_url,
let baseURL = URL(string: baseStringUrl) {
webView.load(
data, mimeType: "text/html",
textEncodingName: "",
baseURL: baseURL
)
}
I keep receiving the same error of: Cannot invoke loadData with an argument of list type '(NSData, MIMEType: String, textEncodingName: nil, baseURL: nil)'
for the loadData method.
var filePath = NSBundle.mainBundle().pathForResource("fractal", ofType: "gif")
var gif = NSData(contentsOfFile: filePath!)
var webViewBG = UIWebView(frame: self.view.frame)
webViewBG.loadData(gif!,MIMEType: "image/gif",textEncodingName: nil,baseURL: nil) // this line of code causes the build error
You should check loadData function signature, which is:
func loadData(_ data: NSData, MIMEType MIMEType: String,
textEncodingName textEncodingName: String, baseURL baseURL: NSURL)
textEncodingName is String, not String?, thus you can't pass nil. Same applies to baseURL where the type is NSURL, not NSURL?.
In this case, you can pass whatever values like utf-8 and http://localhost/ to meet non-nil criteria.
Check this thread for other ways how to do it.
Try to minimize usage of ! to avoid runtime failures. Something like this is much more robust:
guard let filePath = NSBundle.mainBundle().pathForResource("fractal", ofType: "gif"),
let gifData = NSData(contentsOfFile: filePath) else {
return
}
var webViewBG = UIWebView(frame: self.view.frame)
webViewBG.loadData(gifData, MIMEType: "image/gif", textEncodingName: "utf-8",
baseURL: NSURL(string: "http://localhost/")!)