Android的ListView的样式和颜色？ [英] android ListView Style and colors?

问题描述

我有问题，从selector.xml项目的风格样式列表视图我（背景）

i have problem styling my listview from selector.xml items style ( background )

颜色不切换其显示的所有项目的黑色，我想改用物品的颜色黑和白之间，现在的目标是从列表视图适配器交换物品的颜色，但是当我从列表视图适配器切换项目颜色时，我点击任何项目项目背景变成蓝色！

the colors not switched its show all the items black , i want to switch items colors between black and white , for now aim switching items colors from listview Adapter, but when i switch items colors from listview Adapter when i click on any item the item background become blue !

这是我的code

public class Home_ForumsList_listview extends ArrayAdapter<Object>{

    private int[] colors = new int[] { 0x30ffffff, 0x30808080 };
    Context context; 
    private LayoutInflater mInflater; 
    @SuppressWarnings("rawtypes")
    ArrayList ob; 
    int resource ;
    /*================================================
     *  Setup ListView
     *===============================================*/
    @SuppressWarnings("unchecked")
    public Home_ForumsList_listview (Context context, int resource, @SuppressWarnings("rawtypes") ArrayList objects) {
        super(context, resource,objects);
        this.context  = context;
        this.ob       = objects;
        this.resource = resource;
        mInflater     = LayoutInflater.from(context);
    }
    /*================================================
     *  Items Counter
     *===============================================*/
    public int getCount() {
        return ob.size();
    }
    /*================================================
     *  Item Posistion JSON
     *===============================================*/
    public JSONObject getItem(JSONObject position) {
        return position;
    }
    /*================================================
     *  Item Position
     *===============================================*/
    public long getItemId(int position) {
        return position;
    }
    /*================================================
     *  Hold Views inside Chant Bit View
     *===============================================*/
    static class ViewHolder {

        TextView  forum_title;
        TextView  forum_desc;
        TextView  forum_catagories;
        TextView  forumcode;
        Button    popup_but_id;
        RatingBar ratingsmall;
    }
    /*================================================
     *  Setup Each View raw by raw
     *===============================================*/
    public View getView(final int position, View convertView, ViewGroup parent)
    {
        final ViewHolder holder;
        JSONObject r = (JSONObject) getItem(position);

        if(convertView == null)
        {
             convertView = mInflater.inflate(R.layout.a_home_forumslist_bit, null);
             holder = new ViewHolder();
             convertView.setTag(holder);


             holder.forum_title      = (TextView)  convertView.findViewById(R.id.flist_forum_title);
             holder.forum_desc       = (TextView)  convertView.findViewById(R.id.flist_forum_desc);
             holder.forum_catagories = (TextView)  convertView.findViewById(R.id.flist_forum_catagories);
             holder.forumcode        = (TextView)  convertView.findViewById(R.id.flist_forumcode);
             holder.ratingsmall      = (RatingBar) convertView.findViewById(R.id.ratingsmall);
       }
       else
        {
             holder = (ViewHolder) convertView.getTag();
        }


        int colorPos = position % colors.length;
        convertView.setBackgroundColor(colors[colorPos]);

        try {
            holder.forum_title.setText(r.getString("forum_title"));

            if ( r.getString("forum_desc").equals(""))
            {
                holder.forum_desc.setVisibility(View.GONE);
            }

            float z = (float) r.getInt("rate");
            holder.ratingsmall.setRating(z); 
            holder.forum_desc.setText(r.getString("forum_desc"));
            holder.forumcode.setText( context.getString(R.string.forumcode) + " :   ( "+ r.getLong("forumcode") + " ) ");
            holder.forum_catagories.setText( " : " + r.getString("forum_catagories"));

        } catch (JSONException e) {
            e.printStackTrace();
        }

        return convertView; 

    } 
}

我GOOGLE了它如何风格列表视图，显示颜色相同的所有例子来自适配器开关，有没有办法从selector.xml风格列表视图项目？

i googled it how to style listview , all the examples showing same colors switch from Adapter , is there any way to style listview items from selector.xml ?

对不起我的英语不好^ _ ^我希望你得到它

sorry for my bad English ^_^ i hope you got it

推荐答案

这听起来像你想交替背景色在列表中，这样的项目0是白色的，第1项是黑色的，第2项是白等。

It sounds like you want to alternate background colors in your list, so item 0 is white, item 1 is black, item 2 is white, etc.

首先，定义颜色的Andr​​oid资源：

First, define your colors as Android resources:

RES / colors.xml：

res/colors.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="white">#ffffff</color>
    <color name="black">#000000</color>
</resources>

然后，使用这些资源标识符为背景。现在，你给它的颜色的十六进制为int，这是错误的 - 它需要int这是一个资源标识符。像这样的：

Then, use these resource identifiers as the backgrounds. Right now, you're giving it the color hex as an int, which is wrong -- it expects an int that is a resource identifier. Like this:

private int[] colors = new int[] { R.color.white, R.color.black };

这应该工作。试试吧。

要摆脱蓝色的亮点，你可以做选择，并使用这些，而不是仅仅黑白：

To get rid of the blue highlight, you could make selectors and use those instead of just black and white:

绘制/ dark_selector.xml

drawable/dark_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
    android:color="@color/gray"
    android:pressed="true" />

<item android:color="@color/black" />
</selector>

然后使用可绘制作为背景。

Then use the drawables as your backgrounds.

private int[] colors = new int[] { 
    R.drawable.lightSelector, 
    R.drawable.darkSelector 
    };

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