How can I check if an android URL is valid?

Use URLUtil to validate the URL as below. It will return True if URL is valid and false if URL is invalid.

How do you check if a URL is valid or not?

filter_var($url, FILTER_VALIDATE_URL); Validates value as URL (according to » http://www.faqs.org/rfcs/rfc2396), optionally with required components. Beware a valid URL may not specify the HTTP protocol http:// so further validation may be required to determine the URL uses an expected protocol, e.g. ssh:// or mailto:.

How do I find the URL of an image?

If you want to be sure that it’s actually an image, you can utilize the Image object’s onerror and onload events. You could use getResponseHeader of XMLHttpRequest to check the mime type of the successfully returned content of your request.

How do you check if a string is a URL in Java?

Using java.net.url

net. url class to validate a URL. The idea is to create a URL object from the specified String representation. If we do not get exception while creating the object, we return true.

How can I check if a URL is valid in Swift?

for Swift 4.1:

func canOpenURL(_ string: String?) -> Bool { guard let urlString = string, let url = URL(string: urlString) else { return false } if ! UIApplication. shared. canOpenURL(url) { return false } let regEx = “((https|http)://)((w|-)+)(([.]

How do I find the URL?

The website’s URL is in the address bar, which is usually at the top of your web browser window. This bar may be at the bottom of the window in Chrome on some Androids. Copy the URL. If you want to paste the URL into a message, post, or another app, you can copy and paste it from the address bar.

How do I find the URL of a picture on my phone?

Get an image URL

Do a search on images.google.com for the image you want to find. Touch and hold the image. Depending on what browser you’re using, select the image URL by tapping the links below: Chrome: Copy link address.

How do I check if an image has a URL?

Step 2: Create a JQuery script to verify the Image present in the URL or Not which is written below:

  1. $(function()
  2. {
  3. $(‘#btnStatus’). click(function()
  4. {
  5. $. ajax(
  6. {
  7. url: $(‘#txtUrl’). val(),
  8. success: function(data)

27 окт. 2015 г.

How do I know if my URL is https?

You can Use android URLUtil to check whether url is HTTP or HTTPS: public static boolean isHttpUrl (String url) Returns True iff the url is an http: url. public static boolean isHttpsUrl (String url) Returns True iff the url is an https: url.

What does HTTP denote at the start of a URL?

The “https://” at the beginning of a URL denote the secure link. Explanation: Any website link starting with HTTPS (hypertext transfer protocol secure) is the secure connection to any server whereas website link starting with HTTP (hypertext transfer protocol) is not a secure connection to any server.

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How do I ping a URL in Java?

Preferred Java way to ping an HTTP URL for availability

  1. try {
  2. final URLConnection connection = new URL(url).openConnection();
  3. connection.connect();
  4. LOG.info(“Service ” + url + ” available, yeah!” );
  5. available = true;
  6. } catch (final MalformedURLException e) {
  7. throw new IllegalStateException(“Bad URL: ” + url, e);
  8. } catch (final IOException e) {

How do you check whether a file exists or not in Swift?

Check If File Exist

  1. let fileNameToDelete = “myFileName.txt”
  2. var filePath = “”
  3. // Fine documents directory on device.
  4. let dirs : [String] = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.allDomainsMask, true)
  5. if dirs.count > 0 {
  6. let dir = dirs[0] //documents directory.

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