Android ListView滑动会触发addTextChangedListener,导致显示错乱

感谢这位博主,解决了我的大问题,转载以备查看:原文地址http://blog.csdn.net/cuiweicai/article/details/51325010

最近遇到一个问题，在Listview 中的item 放个editview ，然后监听editview 的文本变化，来设置数组中的数，addTextChangedListener, 发现每个item的监听都被触发了,导致我的数组中的每个数都是一样的。。然后notifyDataSetChanged 后，就把界面Listview中的每个item中的文本框中的内容都变成刚才文本改的一样的。。

经过苦苦查询，终于找到解决方法，在此特别记录下。

第一步：在自定义的adapter 中定义一个记录是否用原始记录还是文本监听改变记录的标识符。

<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> ischange=<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>;</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul>

第二步： 
将监听放在初始化viewholder 的那段代码里面，在监听事件中判断标识符，如果是true则不做任何操作，false的话再接着操作。

第三步： 
将 在holder.product_ext.setText之前设置为标识符true，在holder.product_ext.setText之后设置为标识符false。

二，三步的代码如下：

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">    @Override    public View getView(final int position, View convertView, ViewGroup parent) {        final OrderChanPin orderChanPin=mList<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.get</span>(position)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        ViewHolder holder<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        if (convertView==null){            holder=new ViewHolder()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>            convertView= LayoutInflater<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.from</span>(mContext)<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inflate</span>(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.layout</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.commit</span>_item,null)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>            holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_name= (TextView) convertView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.findViewById</span>(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_name)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>            holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_pic= (ImageView) convertView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.findViewById</span>(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_pic)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>            holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_rating= (RatingBar) convertView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.findViewById</span>(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_rating)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>            holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_ext= (EditText) convertView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.findViewById</span>(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_ext)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>            holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.gridView</span> =(GridView)convertView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.findViewById</span>(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.gridView</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>            holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.lablegridView</span> =(GridView)convertView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.findViewById</span>(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.gv</span>_productlable)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>// 第二步            holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_ext<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.addTextChangedListener</span>(new TextWatcher() {            @Override            public void beforeTextChanged(CharSequence s, int start, int count, int after) {            }            @Override            public void onTextChanged(CharSequence s, int start, int before, int count) {            }            @Override            public void afterTextChanged(Editable s) {                if (!ischange) {                    mList<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.get</span>(position)<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setCommit</span>(s + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">""</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>                }            }        })<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_rating<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setOnRatingBarChangeListener</span>(new RatingBar<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.OnRatingBarChangeListener</span>() {            @Override            public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {                if (!ischange) {                    String str = String<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.valueOf</span>(rating)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>                    str = str<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.substring</span>(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, str<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.indexOf</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"."</span>))<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>                    orderChanPin<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setRigbar</span>(str)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>                    mList<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.get</span>(position)<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setRigbar</span>(str)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>                    notifyDataSetChanged()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>                }            }        })<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        convertView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setTag</span>(holder)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>    }else {        holder= (ViewHolder) convertView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getTag</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        }        //第三步        ischange =true<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_ext<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setText</span>(mList<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.get</span>(position)<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getCommit</span>())<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        if(!mList<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.get</span>(position)<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getRigbar</span>()<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.isEmpty</span>()){        holder<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.product</span>_rating<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setRating</span>(Integer<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.parseInt</span>(mList<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.get</span>(position)<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getRigbar</span>()))<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        }        ischange =false<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        return convertView<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li></ul>

然后，这里代码中还有RatingBar 的这个组件，当根据setOnRatingBarChangeListener 这个监听来设置星级的时候，也会发生和文本监听变化类似的错误，会让整个Listview中的评星级都变成一样的等级。所以也需要和文本变化监听类似的处理方式。

如此处理后，即使复用viewholder 也不会发生改一个文本，所有的文本都变成一样的。