Android 聊天界面适配器

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** *  * @描述         聊天界面适配器 * @项目名称      App_imooc * @包名         com.android.imooc.chat * @类名         RecorderAdapter * @author      chenlin * @date        2013年6月17日 下午10:03:26 */public class RecorderAdapter extends ArrayAdapter<Recorder> {    private LayoutInflater mInflater;    private int mMinItemWith;// 设置对话框的最大宽度和最小宽度    private int mMaxItemWith;    public RecorderAdapter(Context context, List<Recorder> datas) {        super(context, -1, datas);        mInflater = LayoutInflater.from(context);//      // 获取系统宽度//      WindowManager wManager = (WindowManager) context//              .getSystemService(Context.WINDOW_SERVICE);//      DisplayMetrics outMetrics = new DisplayMetrics();//      wManager.getDefaultDisplay().getMetrics(outMetrics);        mMaxItemWith = (int) (ScreenUtils.getScreenWidth(context) * 0.7f);        mMinItemWith = (int) (ScreenUtils.getScreenHeight(context) * 0.15f);    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ViewHolder viewHolder = null;        if (convertView == null) {            convertView = mInflater.inflate(R.layout.item_chat_layout, parent, false);            viewHolder=new ViewHolder();            viewHolder.seconds=(TextView) convertView.findViewById(R.id.recorder_time);            viewHolder.length=convertView.findViewById(R.id.recorder_length);            convertView.setTag(viewHolder);        }else {            viewHolder=(ViewHolder) convertView.getTag();        }        Recorder recorder = getItem(position);        viewHolder.seconds.setText(Math.round(recorder.time)+"\"");        ViewGroup.LayoutParams params=viewHolder.length.getLayoutParams();        params.width = (int) (mMinItemWith + mMaxItemWith /60f*recorder.time);        viewHolder.length.setLayoutParams(params);        return convertView;    }    class ViewHolder {        TextView seconds;// 时间        View length;// 对话框长度    }}
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