如何使 MaterialAlertDialogBuilder 中的 ClickableSpan 链接可点击？

Question

I have a SpannableStringBuilder object with a ClickableSpan link like this,

SpannableStringBuilder ssb = new SpannableStringBuilder("Hi StackOverflow!");

ClickableSpan clickableSpan = new ClickableSpan() {
    @Override
    public void onClick(@NonNull View widget) {
        Toast.makeText(MainActivity.this, "Clicked", Toast.LENGTH_SHORT).show();
    }
};

ssb.setSpan(clickableSpan, 3, 16, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

This works fine when I set it to a TextView and after using textView.setMovementMethod(LinkMovementMethod.getInstance())

When I set the ssb object to the MaterialAlertDialogBuilder ,

new MaterialAlertDialogBuilder(this)
                .setTitle("My Dialog")
                .setMessage(ssb)
                .show();

It displays as a clickable link but cannot actually click it I couldn't find a way to use setMovementMethod for the message in MaterialAlertDialogBuilder . Is there any way to make it clickable?

Answer 1

Here is code snippet to make your spannable content clickable, give it a try.

SpannableString s = new SpannableString(msg); // Here msg should have url to enable clicking
Linkify.addLinks(s, Linkify.ALL);

After that put your alertdialog code here

//Alert dialog code

Then get id of textview of your MaterialAlertDialog, below line of code must be called after dialog.show() like this,

((TextView)dialog.findViewById(android.R.id.message))
.setMovementMethod(LinkMovementMethod.getInstance());

Answer 2

Just define a TextView with the default style ( @style/MaterialAlertDialog.MaterialComponents.Body.Text ) provided by the MaterialAlertDialogBuilder :

<TextView
  android:id="@+id/textview1"
  style="?attr/materialAlertDialogBodyTextStyle"
  ...>

Then set the SpannableStringBuilder as text:

SpannableStringBuilder ssb =....
LayoutInflater inflater = this.getLayoutInflater();
View dialogView = inflater.inflate(R.layout.custom_text_view, null);
TextView customTextView = dialogView.findViewById(R.id.textview1);
customTextView.setText(ssb);
customTextView.setMovementMethod(LinkMovementMethod.getInstance());

Finally:

 MaterialAlertDialogBuilder(this)
        .setTitle("My Dialog")
        .setView(dialogView)
        ...

Answer 3

I was wondering how to add a hyperlink to a MaterialAlertDialog message via a static string that contains simple html tags without having to create a custom view (eg Hello <a href='https://en.wikipedia.org/wiki/%22Hello,_World!%22_program'> World </a> ), @Bhavnik's answer helped a lot:

val dialog = MaterialAlertDialogBuilder(context)
                    .setTitle(getString(R.string.dialog_title))
                    .setMessage(getText(R.string.dialog_content))
                    ...
                    .show()
dialog.findViewById<TextView>(android.R.id.message)?.movementMethod = LinkMovementMethod.getInstance()

The main trick is indeed to add the LinkMovementMethod after showing the dialog, but also don't forget to get the string with getText in order to keep the styling.

For more complex html, .setMessage(Html.fromHtml(getText(R.string.dialog_content).toString(), flags)) also seems to work.