Android的ListView子Item选中改变TextView字体颜色_android builder.setitems items 字体颜色

1.字体颜色只是在按下那一瞬间改变，松手后立刻恢复

效果

只是在res/color文件下创建item_text_selector.xml文件

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

然后在TextView中引用即可

android:textColor="@color/item_text_selector"

2.字体颜色按下后就一直为改变的颜色，松手后不会恢复，直到下一个Item选中后才恢复

效果

处理思想：在适配器里写好字体变化的相关逻辑，然后在外部事件监听中改变某个值，通知字体改变。

将item_text_selector.xml中的state_pressed改为state_selected

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

依然在TextView中引用

然后在自定义的适配器代码中

//当前Item被点击的位置
private int currentItem;

public void setCurrentItem(int currentItem) {
    this.currentItem = currentItem;
}

然后在getView()方法中

//设置文字 内容
holder.mTextView.setText(mList.get(position));

if (currentItem == position) {
    //如果被点击，设置当前TextView被选中
    holder.mTextView.setSelected(true);
} else {
    //如果没有被点击，设置当前TextView未被选中
    holder.mTextView.setSelected(false);
}

return convertView;

最后在Activity中编写ListView的Item点击事件

mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        //改变选中状态
        adapter.setCurrentItem(position);
        //通知ListView改变状态
        adapter.notifyDataSetChanged();
    }
});

适配器的完整代码

public class MyAdapter extends BaseAdapter {
    //当前Item被点击的位置
    private Context mContext;
    private List<String> mList;

    public MyAdapter(Context context, List<String> list) {
        this.mContext = context;
        this.mList = list;
    }

    //当前Item被点击的位置
    private int currentItem = -1;

    public void setCurrentItem(int currentItem) {
        this.currentItem = currentItem;
    }

    @Override
    public int getCount() {
        return mList.size();
    }

    @Override
    public Object getItem(int position) {
        return mList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        if (convertView == null) {
            convertView = LayoutInflater.from(mContext).inflate(R.layout.item_listview, null);
            holder = new ViewHolder(convertView);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        //设置文字 内容
        holder.mTextView.setText(mList.get(position));

        if (currentItem == position) {
            //如果被点击，设置当前TextView被选中
            holder.mTextView.setSelected(true);
        } else {
            //如果没有被点击，设置当前TextView未被选中
            holder.mTextView.setSelected(false);
        }

        return convertView;
    }

    class ViewHolder {
        TextView mTextView;

        public ViewHolder(View convertView) {
            mTextView = (TextView) convertView.findViewById(R.id.tv_text);
        }
    }
}