[Android]解决ClickableSpan中点击后ListView中item的长按冲突的问题
项目中碰到一个问题,情景是这样的:
有一个ListView,每个item中有一个TextView,这个TextView实现了LongClick事件,这个TextView中又添加了ClickableSpan,实现了方法onClick。
我的需求是点击ClickableSpan,则响应ClickableSpan事件;长按ClickableSpan效果跟长按TextView应该一样,都响应TextView的LongClick事件。
然而结果是点击ClickableSpan响应正常;但是长按ClickableSpan时问题出现了:TextView的长按事件响应了,ClickableSpan点击事件也响应了!
研究了一下代码,解决方法如下:
继承LinkMovementMethod,然后重写里面的onTouchEvent方法,在里面判断,如果当前是长按的状态,则不执行ClickableSpan的onClick事件:
package com.kanchufang.privatedoctor.util.spannableparser;
import android.text.Layout;
import android.text.Selection;
import android.text.Spannable;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.view.MotionEvent;
import android.widget.TextView;
/* Author: wangjie
Email: tiantian.china.2@gmail.com Date: 7/3/14.
*/
public class LinkMovementClickMethod extends LinkMovementMethod{
private long lastClickTime;
private static final long CLICK_DELAY = 500l;
@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() - lastClickTime < CLICK_DELAY){
link[0].onClick(widget);
}
} else if (action == MotionEvent.ACTION_DOWN) {
Selection.setSelection(buffer,
buffer.getSpanStart(link[0]),
buffer.getSpanEnd(link[0]));
lastClickTime = System.currentTimeMillis();
}
return true;
} else {
Selection.removeSelection(buffer);
}
}
return super.onTouchEvent(widget, buffer, event);
}
public static LinkMovementClickMethod getInstance(){
if(null == sInstance){
sInstance = new LinkMovementClickMethod();
}
return sInstance;
}
private static LinkMovementClickMethod sInstance;
}
代码很简单,按住超过500ms,则认定为是长按,则不执行ClickableSpan的onClick
来源博客:Wang Jie's Blog's Blog
本文链接:https://blog.wangjiegulu.com/2014/07/03/Android-解决ClickableSpan中点击后ListView中item的长按冲突的问题/
版权声明:本博客所有文章除特别声明外,均采用 CC BY 4.0 CN协议 许可协议。转载请注明出处。
本文链接:https://blog.wangjiegulu.com/2014/07/03/Android-解决ClickableSpan中点击后ListView中item的长按冲突的问题/
版权声明:本博客所有文章除特别声明外,均采用 CC BY 4.0 CN协议 许可协议。转载请注明出处。