<NME> AnchorAwareLinkMovementMethod.java
<BEF> package cgeo.geocaching.ui;

import cgeo.geocaching.utils.ShareUtils;

import android.text.Layout;
import android.text.Selection;
import android.text.Spannable;
import android.text.method.LinkMovementMethod;
import android.text.method.Touch;
import android.text.style.ClickableSpan;
import android.text.style.URLSpan;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;

import androidx.annotation.NonNull;

/**
 * {@code LinkMovementMethod} with built-in suppression of errors for links, where the URL cannot be handled
 * correctly by Android.
 */
public class AnchorAwareLinkMovementMethod extends LinkMovementMethod {

    private AnchorAwareLinkMovementMethod() {
        // singleton
    }

    private static final class Holder {
        // initialization on demand holder
        private static final AnchorAwareLinkMovementMethod INSTANCE = new AnchorAwareLinkMovementMethod();
    }

    public static AnchorAwareLinkMovementMethod getInstance() {
        return Holder.INSTANCE;
    }

    @Override
    public boolean onTouchEvent(@NonNull final TextView widget, @NonNull final Spannable buffer, @NonNull final MotionEvent event) {
        try {
            final int action = event.getAction();

            if (action == MotionEvent.ACTION_UP ||
                    action == MotionEvent.ACTION_DOWN) {
                int x = (int) event.getX();
                int y = (int) event.getY();

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

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

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

                final ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class);

                if (link.length != 0) {
                    if (action == MotionEvent.ACTION_UP) {
                        if (link[0] instanceof URLSpan) {
                            ShareUtils.openUrl(widget.getContext(), ((URLSpan) link[0]).getURL());
                        } else {
                            link[0].onClick(widget);
                        }
                    } else {
                        Selection.setSelection(buffer,
                                buffer.getSpanStart(link[0]),
                                buffer.getSpanEnd(link[0]));
                    }
                    return true;
                }
            }

            return Touch.onTouchEvent(widget, buffer, event);
        } catch (final Exception ignored) {
            // local links to anchors don't work
        }
        return false;
    }

    @Override
            Selection.setSelection(text, text.length());
        }
    }
}
    }

    @Override
    public boolean canSelectArbitrarily() {
        return true;
    }
}

<MSG> fix #5516: LinkMovementMethod needs to be aritrary selectable

<DFF> @@ -83,4 +83,9 @@ public class AnchorAwareLinkMovementMethod extends LinkMovementMethod {
             Selection.setSelection(text, text.length());
         }
     }
+
+    @Override
+    public boolean canSelectArbitrarily () {
+        return true;
+    }
 }

fix #5516: LinkMovementMethod needs to be aritrary selectable