/*** 處理窗口控件大小，形狀，像素等工具類** @author chen.lin**/public class UITools {  /**  * 把像素轉化為dp  *  * @param context  * @param px  * @return  */  public static int px2dip(Context context, float px) {    float density = context.getResources().getDisplayMetrics().density;    return (int) (px * density + 0.5f);  }  /**   * 設置窗體的寬度   * @param context   */  public static void setWinWidth(Activity context) {    DisplayMetrics metric = new DisplayMetrics();    context.getWindowManager().getDefaultDisplay().getMetrics(metric);    LayoutParams p = context.getWindow().getAttributes();    p.width = (int) (metric.widthPixels * 0.8);    context.getWindow().setAttributes(p);  }  /**   * 設置彈出窗口中listview的高度   *   * @param listView   */  public static void setListViewHeight(ListView listView) {    // 獲取ListView對應的Adapter    ListAdapter listAdapter = listView.getAdapter();    if (listAdapter == null) {      return;    }    int totalHeight = 0;    for (int i = 0, len = listAdapter.getCount(); i < len; i++) { // listAdapter.getCount()返回數據項的數目      View listItem = listAdapter.getView(i, null, listView);      listItem.measure(0, 0); // 計算子項View 的寬高      totalHeight += listItem.getMeasuredHeight(); // 統計所有子項的總高度    }    ViewGroup.LayoutParams params = listView.getLayoutParams();    params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));    // listView.getDividerHeight()獲取子項間分隔符占用的高度    // params.height最后得到整個ListView完整顯示需要的高度    listView.setLayoutParams(params);  }}