Html.fromHtml deprecated in Android N

Question

I am using Html.fromHtml to view html in a TextView.

Spanned result = Html.fromHtml(mNews.getTitle());
...
...
mNewsTitle.setText(result);

But Html.fromHtml is now deprecated in Android N+

What/How do I find the new way of doing this?

Answer 1

You can use

//noinspection deprecation
return Html.fromHtml(source);

to suppress inspection just for single statement but not the whole method.

Answer 2

Compare of the flags of fromHtml().

<p style="color: blue;">This is a paragraph with a style</p>

<h4>Heading H4</h4>

<ul>
   <li style="color: yellow;">
      <font color=\'#FF8000\'>li orange element</font>
   </li>
   <li>li #2 element</li>
</ul>

<blockquote>This is a blockquote</blockquote>

Text after blockquote
Text before div

<div>This is a div</div>

Text after div

Answer 3

From official doc :

fromHtml(String) method was deprecated in API level 24. use fromHtml(String, int) instead.

1. TO_HTML_PARAGRAPH_LINES_CONSECUTIVE Option for toHtml(Spanned, int): Wrap consecutive lines of text delimited by '\n' inside <p> elements.

2. TO_HTML_PARAGRAPH_LINES_INDIVIDUAL Option for toHtml(Spanned, int): Wrap each line of text delimited by '\n' inside a <p> or a <li> element.

https://developer.android.com/reference/android/text/Html.html

Answer 4

I had a lot of these warnings and I always use FROM_HTML_MODE_LEGACY so I made a helper class called HtmlCompat containing the following:

   @SuppressWarnings("deprecation")
   public static Spanned fromHtml(String source) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            return Html.fromHtml(source, Html.FROM_HTML_MODE_LEGACY);
        } else {
            return Html.fromHtml(source);
        }
    }

Answer 5

fromHtml

This method was deprecated in API level 24.

You should use FROM_HTML_MODE_LEGACY

Separate block-level elements with blank lines (two newline characters) in between. This is the legacy behavior prior to N.

Code

if (Build.VERSION.SDK_INT >= 24)
        {
            etOBJ.setText(Html.fromHtml("Intellij \n Amiyo",Html.FROM_HTML_MODE_LEGACY));

         }
 else
        {
           etOBJ.setText(Html.fromHtml("Intellij \n Amiyo"));
        }

For Kotlin

fun setTextHTML(html: String): Spanned
    {
        val result: Spanned = if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
            Html.fromHtml(html, Html.FROM_HTML_MODE_LEGACY)
        } else {
            Html.fromHtml(html)
        }
        return result
    }

Call

 txt_OBJ.text  = setTextHTML("IIT Amiyo")

Answer 6

The framework class has been modified to require a flag to inform fromHtml() how to process line breaks. This was added in Nougat, and only touches on the challenge of incompatibilities of this class across versions of Android.

I've published a compatibility library to standardize and backport the class and include more callbacks for elements and styling:

https://github.com/Pixplicity/HtmlCompat

While it is similar to the framework's Html class, some signature changes were required to allow more callbacks. Here's the sample from the GitHub page:

Spanned fromHtml = HtmlCompat.fromHtml(context, source, 0);
// You may want to provide an ImageGetter, TagHandler and SpanCallback:
//Spanned fromHtml = HtmlCompat.fromHtml(context, source, 0,
//        imageGetter, tagHandler, spanCallback);
textView.setMovementMethod(LinkMovementMethod.getInstance());
textView.setText(fromHtml);