LongClickLinkMovementMethod.java

package net.coding.program.common;

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

/**
 * LinkMovementMethod 对长按的情况没有考虑，长按依然会调用 onClick 事件
 * 我做了一下判断
 * Created by chaochen on 15/2/4.
 */
public class LongClickLinkMovementMethod extends LinkMovementMethod {

    private long mActionDownTime = 0;

    @Override
    public boolean onTouchEvent(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();

            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 = buffer.getSpans(off, off, ClickableSpan.class);

            if (link.length != 0) {
                if (action == MotionEvent.ACTION_UP) {
                    if (System.currentTimeMillis() - mActionDownTime < ViewConfiguration.getLongPressTimeout()) {
                        link[0].onClick(widget);
                    }

                } else if (action == MotionEvent.ACTION_DOWN) {
                    Selection.setSelection(buffer,
                            buffer.getSpanStart(link[0]),
                            buffer.getSpanEnd(link[0]));
                    mActionDownTime = System.currentTimeMillis();
                }

                return true;
            } else {
                Selection.removeSelection(buffer);
            }
        }

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


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

        return sInstance;
    }

    private static LongClickLinkMovementMethod sInstance;
}