Android的 - 我设置一个ListView自定义背景以及高亮已经 [英] Android - I set a custom background for a listView, and the highlight has gone

问题描述

好了，现在这是我的SimpleAdapter的getView功能：

Ok, now this is my SimpleAdapter's getView function:

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      View view = super.getView(position, convertView, parent);

      view.setBackgroundColor(R.drawable.color1);

      return view;
    }
}

这是我color1.xml文件，在res /绘-LPI文件夹：

And this is my color1.xml file, in res/drawable-lpi folder:

<?xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
          android:color="#FFFF00FF"/> <!-- pressed -->

    <item android:state_selected="true"
          android:color="#FF0000FF"/> <!-- selected -->

    <item android:state_focused="true"
          android:color="#FF0000FF"/> <!-- focused -->  

    <item android:color="#FFFFFFFF"/> <!-- default -->
</selector>

为什么我仍然得到呢？

Why i still get this?

推荐答案

首先，你需要知道一个视图的所有后台设置功能，真正改变它的背景抽拉。

First of all, you need to know that all background settings functions of a View, actually change its background-drawable.

• setBackgroundColor实际上
  创建一个ColorDrawable。


• setBackgroundResource 实际加载绘制资源


• 的<一个href=\"http://developer.android.com/reference/android/view/View.html#setBackgroundDrawable%28android.graphics.drawable.Drawable%29\"相对=nofollow> setBackgroundDrawable ，很明显，采用了绘制。

• The setBackgroundColor actually creates a ColorDrawable.
• The setBackgroundResource actually loads a drawable resource
• The setBackgroundDrawable, obviously, uses a drawable.

当你调用setBackgroundColor你highlight.xml，你真正尝试创建一个ColorDrawable与R.drawable.highlight的生成的ID的值。

When you call setBackgroundColor with your highlight.xml, you actually try to create a ColorDrawable with the value of the generated ID of R.drawable.highlight.

您确实需要调用setBackgroundResource方法，它等同于机器人：背景。XML标签

You actually need to call the setBackgroundResource method, which is equivalent to the "android:background" XML tag.

您highlight.xml实际上是一个国家列表，其中包含的 StateListDrawable 。
如果你想只改变颜色，你可以使用 color-国家列表。

Your highlight.xml is actually a state-list, which is an instance of StateListDrawable. If you wanted to only change the colors, you could use a color-state-list.

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