android仿京东商品属性筛选功能

public class CustomHeightListView extends ListView { 
 
  private Context mContext; 
 
  public CustomHeightListView(Context context) { 
    this(context, null); 
  } 
 
  public CustomHeightListView(Context context, AttributeSet attrs) { 
    this(context, attrs, 0); 
  } 
 
  public CustomHeightListView(Context context, AttributeSet attrs, int defStyleAttr) { 
    super(context, attrs, defStyleAttr); 
    init(context); 
  } 
 
  private void init(Context context) { 
    mContext = context; 
  } 
 
  @Override 
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
    try { 
      //最大高度显示为屏幕内容高度的一半 
      Display display = ((Activity) mContext).getWindowManager().getDefaultDisplay(); 
      DisplayMetrics d = new DisplayMetrics(); 
      display.getMetrics(d); 
      //设置控件高度不能超过屏幕高度一半（d.heightPixels / 2，下面有清空按钮所以再减200，也可随意换成自己想要的高度） 
      heightMeasureSpec = MeasureSpec.makeMeasureSpec(d.heightPixels / 2 - 200, MeasureSpec.AT_MOST); 
    } catch (Exception e) { 
      e.printStackTrace(); 
    } 
    //重新计算控件高、宽 
    super.onMeasure(widthMeasureSpec, heightMeasureSpec); 
  } 
} 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  android:layout_width="match_parent" 
  android:layout_height="wrap_content" 
  android:orientation="vertical"> 
 
  <TextView 
    android:id="@+id/tv_type_name" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" /> 
 
  <com.example.zheng.flowlayoutdemo.view.SkuFlowLayout 
    android:id="@+id/layout_property" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" /> 
   
</LinearLayout> 

flowPopWindow = new FlowPopWindow(MainActivity.this, dictList); 
    flowPopWindow.showAsDropDown(ivBack); 

flowPopWindow.setOnConfirmClickListener(new FlowPopWindow.OnConfirmClickListener() { 
     @Override 
     public void onConfirmClick() { 
      StringBuilder sb = new StringBuilder(); 
      for (FiltrateBean fb : dictList) { 
       List<FiltrateBean.Children> cdList = fb.getChildren(); 
       for (int x = 0; x < cdList.size(); x++) { 
        FiltrateBean.Children children = cdList.get(x); 
        if (children.isSelected()) 
         sb.append(fb.getTypeName() + ":" + children.getValue() + "；"); 
       } 
      } 
      if (!TextUtils.isEmpty(sb.toString())) 
       Toast.makeText(MainActivity.this, sb.toString(), Toast.LENGTH_LONG).show(); 
     } 
    }