AppUtils.java

package com.github.bkhezry.demomapdrawingtools.utils;


import android.annotation.SuppressLint;
import android.os.Build;
import android.text.Html;
import android.text.Layout;
import android.text.Spannable;
import android.text.TextUtils;
import android.text.style.ClickableSpan;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;

public class AppUtils {
    public static void setTextWithLinks(TextView textView, CharSequence html) {
        textView.setText(html);
        textView.setOnTouchListener(new View.OnTouchListener() {
            @SuppressLint("ClickableViewAccessibility")
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                int action = event.getAction();
                if (action == MotionEvent.ACTION_UP ||
                        action == MotionEvent.ACTION_DOWN) {
                    int x = (int) event.getX();
                    int y = (int) event.getY();

                    TextView widget = (TextView) v;
                    x -= widget.getTotalPaddingLeft();
                    y -= widget.getTotalPaddingTop();

                    x += widget.getScrollX();
                    y += widget.getScrollY();

                    Layout layout = widget.getLayout();
                    int line = layout.getLineForVertical(y);
                    int off = layout.getOffsetForHorizontal(line, x);

                    ClickableSpan[] link = Spannable.Factory.getInstance()
                            .newSpannable(widget.getText())
                            .getSpans(off, off, ClickableSpan.class);

                    if (link.length != 0) {
                        if (action == MotionEvent.ACTION_UP) {
                            link[0].onClick(widget);
                        }
                        return true;
                    }
                }
                return false;
            }
        });
    }

    public static CharSequence fromHtml(String htmlText) {
        return fromHtml(htmlText, false);
    }

    public static CharSequence fromHtml(String htmlText, boolean compact) {
        if (TextUtils.isEmpty(htmlText)) {
            return null;
        }
        CharSequence spanned;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            spanned = Html.fromHtml(htmlText, compact ?
                    Html.FROM_HTML_MODE_COMPACT : Html.FROM_HTML_MODE_LEGACY);
        } else {
            //noinspection deprecation
            spanned = Html.fromHtml(htmlText);
        }
        return trim(spanned);
    }

    private static CharSequence trim(CharSequence charSequence) {
        if (TextUtils.isEmpty(charSequence)) {
            return charSequence;
        }
        int end = charSequence.length() - 1;
        while (Character.isWhitespace(charSequence.charAt(end))) {
            end--;
        }
        return charSequence.subSequence(0, end + 1);
    }
}