Develop Reference

How to add hyperlink for Label in Xamarin.Forms

FormattedString t = new FormattedString();
t.Spans.Add(new Span() { Text = "About my Self\n\n" });
t.Spans.Add(new Span() { Text = "1. My website\n\n" });
t.Spans.Add(new Span() { Text = "2. My Linkedin profile\n\n" });
t.Spans.Add(new Span() { Text = "3. Twitter\n\n" });
I have a Text like above, I am able to set hyperlink whole text but I want to set a hyperlink for website and Linkedin words with some URL.
How can I set hyperlink for particular word in Paragraph for Label
Please help me on that.Thanks!!

As far as I know, there is no way to do that, your best choice is to create multiple labels or add a gesture recognizer for the whole text, wich would be a better idea since clicking on a small word is difficult on certain devices and the gesture recognizers on Xamarin are not the best ones around.

This might help for you: AwesomeHyperLinkLabel . I myself looking way to implement this and will start with this link, but I want to improve it a bit and replace links text with friendly text so instead direct link to page it would say "my page"

Displaying Unicode string in Users control in Xamarin (Android)

Basically, i have a list of Nepali Unicode strings something like {"युनिकोड १ ","युनिकोड २","युनिकोड ३"}.
Now, Firstly, I have a text view in Xamarin (Android) and tried to set the text property using couple of methods:
UnicodeTextView.Text="युनिकोड १"; //direct method
var font = Typeface.CreateFromAsset(_activity.Assets, "kantiput.TTF");//kantiput.TTF Is a Nepali font.
UnicodeTextView.Typeface = font;
var font = Typeface.CreateFromAsset(_activity.Assets, "kantiput.TTF");
UnicodeTextView.SetTypeface(font, TypefaceStyle.BoldItalic);
and none of them worked.
When using the first option nothing was displayed, and on working with last two
and there were some BOX character visible.
For first case when i directly tried to set the value:
Before setting value:
After setting value:
Samething with the ListAdapter.
Can anyone suggest me how can we display unicode sentences in TextView, EditText, Toast ?
I want result something like this :
with TextView :
and here is the weird behavior :
and i tried all those code that are in comment too. Still didn't find any luck.

I am working in android.
In toast I checked like the following:
Toast.makeText (this, "\u0c05 \u0c06", Toast.LENGTH_SHORT).Show();
For first two letters of Telugu alphabet s. It worked.
If you have the font file you can obtain unicode codes for the various glyphs in the online software available at
https://opentype.js.org/index.html
Under page glyph inspector.

I tested your code, the first direct method UnicodeTextView.Text="युनिकोड १"; works fine by my side both with single TextView or TextView in ListView.
Or you may try this code:
if (Android.OS.Build.VERSION.SdkInt >= Android.OS.Build.VERSION_CODES.N)
{
UnicodeTextView.Text = Android.Text.Html.FromHtml("युनिकोड १", Android.Text.FromHtmlOptions.ModeLegacy).ToString();
}
else
{
UnicodeTextView.Text = Android.Text.Html.FromHtml("युनिकोड १").ToString();
}

Android - Shortname to Unicode from Emojione doesn't work

First of all, I don't know whether I should ask this here or in the repo, but as I saw other questions for other libraries like.. Picasso, so here goes :
I'm trying to implement Emojione into my Android app. I've downloaded a small static class to convert all short name to unicode from Emojione Github Repo.
The problem is, when I try to use it to convert :smile: to unicode..
Emojione.shortnameToUnicode(postMessageText, true); // postMessageText is ":smile:"
It always return.. A square, as if it failed to convert. I tried other short names too like :smiley:, :grinning:, but they also failed. :(something): is really a short name right?

The answer is actually in front of my eyes all the time. It really did convert to unicode but, I might be wrong here, in a font unsupported by Android. So I tried using SpannableStringBuilder to span the emoji part to use emojione-android.ttf
Here's how :
int firstEq = sb.length();
Typeface font = FontCache.getTypeface("emojione-android.ttf", context);
String convertPart = Emojione.shortnameToUnicode(part, true);
sb.append(convertPart + " ");
int lastEq = sb.length();
sb.setSpan(new CustomTypefaceSpan("", font), firstEq, lastEq, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
And that's how I got the TextView to show emojis.. Just use the font!

how to add an action to part of a string android

I have the fallowing text: "By clicking OK you will disable the service. Learn more".
i want to make "Learn more" clickable, however i want a popup menu to appear instead of directing to a website
i have used the fallowing stack question :
How to set the part of the text view is clickable
which worked great. i found the index of learn more by ". ". this solution crashes the application in Chinese and Hindi languages (in Hindi a point is written -> |).
How can i make the "Learn more" clickable in a generic way to show a popup menu?
Is there maybe a way to define the click action in strings.xml, like calling a link? (instead of calling a link -> launch popup menu?)

You can use WebView and anchor. Create new WebViewClient (especially you need this method: shouldOverrideUrlLoading()) and do everything you want when user will click your anchor.

You can create a click event based on the text as you defined.. Check this library.. it may help you.. https://github.com/klinker24/Android-TextView-LinkBuilder

solved it, might be a hack but it works fine.
in strings.xml i have added
//<a></a> tags to be removed later on
<string name="learn_more">By clicking OK you will disable the service. <a>Learn more</a></string>
in the code :
TextView textView= (TextView) findViewById(R.id.textViewInLayout);
textView.setMovementMethod(LinkMovementMethod.getInstance());
textView.setText(R.string.learn_more);
//indexes of the clickable text
int start = textView.getText().toString().indexOf("<a>");
int end = textView.getText().toString().indexOf("</a>");
//set the text as html to make the tags disappear
textView.setText(Html.fromHtml(getString(R.string.learn_more)));
//make the text clickable
Spannable spannable = (Spannable) textView.getText();
ClickableSpan myClickableSpan = new ClickableSpan() {
#Override
public void onClick(View widget) {
yourActionHere();
}
};
// end - 3 beacuse of </a>
spannable.setSpan(myClickableSpan, start, end - 3,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);`

Android handle HTML links and typed links in a TextView

I am trying to handle both HTML and typed links in TextViews and I am unable to find a combination of the built in tools to do this. I can make one or the other work but not both.
Given the following formats
http://google.com
Google!
Using .setMovementMethod(LinkMovementMethod.getInstance()) I can make the anchor tag turn into a link and open a webpage on click. Using .setAutoLinkMask(Linkify.ALL) I can make the typed link work as expected. The problem is setAutoLinkMask disables the setMovementMethod functionality and removes the highlighting it creates on the html link as well as its clicking functionality.
I tried searching for others with this issue and I believe I am being blocked by a lack of proper terms for this situation. Has anyone else come across a solution to handle both cases seamlessly?
This is what I have currently, only the typed link is linked in the TextView, the anchor just displays the text it wraps.
mTextViewBio.setText(Html.fromHtml(htmlstring));
mTextViewBio.setAutoLinkMask(Linkify.ALL);
mTextViewBio.setMovementMethod(LinkMovementMethod.getInstance());
mTextViewBio.setLinksClickable(true);
TextView output:
http://google.com
Google!

Problem is that when Linify.addLinks() is called first thing what this method does is removing all spans. When you use Html.fromHtml() Spanned is return, so when Linkify parse text again firstly remove "html links". I wrote a simply class LinkifyExtra. It has one extra method
public class LinkifyExtra extends Linkify {
public static Spanned addLinksHtmlAware(String htmlString) {
// gather links from html
Spanned spann = Html.fromHtml(htmlString);
URLSpan[] old = spann.getSpans(0, spann.length(), URLSpan.class);
List<Pair<Integer, Integer>> htmlLinks = new ArrayList<Pair<Integer, Integer>>();
for (URLSpan span : old) {
htmlLinks.add(new Pair<Integer, Integer>(spann.getSpanStart(span),
spann.getSpanEnd(span)));
}
// linkify spanned, html link will be lost
Linkify.addLinks((Spannable) spann, Linkify.ALL);
// add html links back
for (int i = 0; i < old.length; i++) {
((Spannable) spann).setSpan(old[i], htmlLinks.get(i).first,
htmlLinks.get(i).second, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
return spann;
}
}
and use it like that
String htmlstring = "http://google.com Google!";
textView = (TextView)findViewById(R.id.textView1);
textView.setText(LinkifyExtra.addLinksHtmlAware(htmlstring));
textView.setMovementMethod(LinkMovementMethod.getInstance());
textView.setLinksClickable(true);
And it works. But you can't use mTextViewBio.setAutoLinkMask(Linkify.ALL);because it triggers addLinks() and remove "html links". Depends of what you want to do in bigger picture, this method may need some changes. I skip checking if spans are overlapping because I suppose it can't happen but if I am wrong you can simply copy this method.