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Android 设置 ListView的 Item 颜色相间排列 - MayGodBlessYou
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<h1>Android 设置 ListView的 Item 颜色相间排列</h1>
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<span class="date">2016/01/29</span>
<span>posted in </span>
<span class="posted-in"><a href='Android.html'>Android</a></span>
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<p>Android 项目中需要设置 ListView的 Item 颜色相间排列关键代码</p>
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<p>关键代码如下</p>
<pre><code class="language-plain_text">// viewHolder复用了item，持有的position是会随着listView的滑动变化的
// if ((viewHolder.getPosition() + 1) % 2 == 0) {
// int color = Color.argb(255, 101, 181, 109);
// viewHolder.getConvertView().setBackgroundColor(color);
// } else {
// int color = Color.argb(255, 255, 255, 255);
// viewHolder.getConvertView().setBackgroundColor(color);
// }
/*
* position参数是不会随着listView的滑动而变化的，即使viewHolder复用的item发生了变化，
* 设置颜色的那个item的position是不会变的，所以可以这么来设置item的颜色相间排列
* */
// if (position % 2 == 0) {
// int color = Color.argb(255, 255, 255, 255);
// viewHolder.getConvertView().setBackgroundColor(color);
// } else {
// int color = Color.argb(255, 101, 181, 109);
// viewHolder.getConvertView().setBackgroundColor(color);
// }
// 这里不用循环也可以的，因为getView方法本身就会去循环listView来画item，这里的
// 循环i和position是等价的，i的 值就是position的值
// for (int i = 0; i < getCount(); i++) {
// if (position == i) {
// if (i % 2 == 0){
// int color = Color.argb(255, 255, 255, 255);
// viewHolder.getConvertView().setBackgroundColor(color);
// } else {
// int color = Color.argb(255, 101, 181, 109);
// viewHolder.getConvertView().setBackgroundColor(color);
// }
// }
// }
</code></pre>
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