LongClickLinkMovementMethod.java

package com.door43.widget;

import android.text.Layout;
import android.text.Selection;
import android.text.Spannable;
import android.text.method.LinkMovementMethod;
import android.text.method.MovementMethod;
import android.view.MotionEvent;
import android.widget.TextView;

public class LongClickLinkMovementMethod extends LinkMovementMethod {

    private Long lastClickTime = 0l;
    private int lastX = 0;
    private int lastY = 0;
    private final int LONG_CLICK_DELAY = 400;
    private Runnable mLongPressRunnable;

    @Override
    public boolean onTouchEvent(final TextView widget, Spannable buffer,
                                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();
            lastX = x;
            lastY = y;
            final int deltaX = Math.abs(x-lastX);
            final int deltaY = Math.abs(y-lastY);

            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);

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

            if (link.length != 0) {
                if(mLongPressRunnable != null) {
                    widget.removeCallbacks(mLongPressRunnable);
                }
                mLongPressRunnable = new Runnable() {
                    @Override
                    public void run() {
                        if (deltaX < 10 && deltaY < 10) {
                            link[0].onLongClick(widget);
                        }
                    }
                };

                if (action == MotionEvent.ACTION_UP) {
                    if (System.currentTimeMillis() - lastClickTime < LONG_CLICK_DELAY) {
                        link[0].onClick(widget);
                    } else if (deltaX < 10 && deltaY < 10) {
                        link[0].onLongClick(widget);
                    }
                } else if (action == MotionEvent.ACTION_DOWN) {
                    Selection.setSelection(buffer,
                            buffer.getSpanStart(link[0]),
                            buffer.getSpanEnd(link[0]));
                    lastClickTime = System.currentTimeMillis();
                    widget.postDelayed(mLongPressRunnable, LONG_CLICK_DELAY);
                }
                return true;
            }
        }

        return super.onTouchEvent(widget, buffer, event);
    }


    public static MovementMethod getInstance() {
        if (sInstance == null)
            sInstance = new LongClickLinkMovementMethod();

        return sInstance;
    }

    private static LongClickLinkMovementMethod sInstance;
}