Android实现通用筛选栏

今天来写一个通用的筛选栏的实现,也是因为之前项目中要好多地方用到筛选栏这么个东西,所以为了之后用起来比较方便,就简单的做了一些封装.废话不多说,看一下效果图:

很多APP都有用到这个筛选栏,相信大家也不陌生.

一、需求分析

看到这个筛选栏之后,先来考虑一下布局,在开始接触android时候的我,可能看到这个布局的想法是:筛选栏这个部分,一个LinearLayout的横向布局,然后再分为3个部分,每个部分各占比重为1,然后在每个部分中放一个TextView和ImageView,之后监听每个部分的点击事件,对TextView和ImageView进行颜色、文字、方向等的处理.确实,这样做能实现功能,不过写起来很麻烦,需要手动的去处理TextView和ImageView的变化,可能筛选栏多了之后就会乱掉,而且还要花费大量时间去查找修改BUG,可能有一个小地方写反了,效果就乱掉了.

所以思考一下,对于筛选栏这个部分,有没有更好的布局设计呢?翻了翻能用的控件,发现CheckBox其实用在这里很好用(之前可能对于CheckBox的用法,只停留在勾选个对勾这样),怎么说它好用呢,因为CheckBox有两种状态(选中和未选中)刚好可以符合需求,选中的时候将字体颜色变为蓝色,并且将图标转换方向和颜色,未选中时重置为起始的样式,并且可以通过设置selector轻松的完成样式的转变.只需管理CheckBox的状态即可.

对于弹出框,很简单,自定义一个popWindow就可以了.不过需要注意的是因为需要在弹框弹出的时候,改变背景色的透明度,并且在弹出框消失之后恢复背景色的透明度,所以需要做一些特殊处理,这里打算去监听popWindow的变化来去完成相关处理.

二、代码实现及优化

根据上边的分析,布局设计如下:

设置了3部分,并且每个部分都使用CheckBox,CheckBox中设置了两个selector,分别是android:drawableRight=”@drawable/seletor_stock_arrow” 和android:textColor=”@drawable/selector_text_stock”

设置如下:

设置箭头样式的seletor_stock_arrow:

设置文字样式的selector_text_stock:

实现很简单,来看一下效果:

效果还不错,接下来就是在代码中去管理每个CheckBox的状态就可以了.在做这部分之前,先来搞定popWindow,后续需要配合CheckBox来使用.

popWindow很简单,继承PopupWindow,然后自定义一些样式和布局即可,直接放代码:

CommonFilterPop:

package com.example.junweiliu.filterdemo.pop;
import android.content.Context;
import android.graphics.drawable.BitmapDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.PopupWindow;

import com.example.junweiliu.filterdemo.R;
import com.example.junweiliu.filterdemo.adapter.CommPopAdapter;

import java.util.ArrayList;
import java.util.List;


public class CommonFilterPop extends PopupWindow {
 
 private LayoutInflater mInflater;
 
 private Context mContext;
 
 private List mDatas = new ArrayList<>();
 
 private View popupView;
 
 private ListView contentLv;
 
 AdapterView.onItemClickListener itemClickListener;
 
 CommPopAdapter adapter;


 
 public CommonFilterPop(Context context, List mDatas) {
 this.mInflater = LayoutInflater.from(context);
 this.mContext = context;
 this.mDatas = (mDatas);
 popupView = mInflater.inflate(
  R.layout.common_popup_list_dialog, null);
 //设置View
 this.setContentView(popupView);
 //设置弹出窗体的宽高
 this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
 this.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
 //初始化控件
 initPopView();
 this.setFocusable(true);
 this.setTouchable(true);
 this.setOutsideTouchable(true);
 this.setBackgroundDrawable(new BitmapDrawable());
 //需要动画效果的话可以设置
 //this.setAnimationStyle(R.style.PopupWindowAnimation);
 this.update();
 }


 private void initPopView() {
 contentLv = (ListView) popupView.findViewById(R.id.lv_pop);
 adapter = new CommPopAdapter(mContext, mDatas);
 contentLv.setAdapter(adapter);
 }


 
 public void setonItemSelectedListener(AdapterView.onItemClickListener itemClickListener) {
 if (null != itemClickListener && null != contentLv) {
  contentLv.setonItemClickListener(itemClickListener);
 }
 }
}

适配器CommPopAdapter:

package com.example.junweiliu.filterdemo.adapter;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.baseAdapter;
import android.widget.TextView;

import com.example.junweiliu.filterdemo.R;

import java.util.ArrayList;
import java.util.List;


public class CommPopAdapter extends baseAdapter {
 
 private List mDatas = new ArrayList<>();
 
 private LayoutInflater mInflater;

 public CommPopAdapter(Context context, List mDatas) {
 this.mDatas = mDatas;
 mInflater = LayoutInflater.from(context);
 }

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

 @Override
 public Object getItem(int i) {
 return mDatas.get(i);
 }

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

 @Override
 public View getView(int i, View convertView, ViewGroup viewGroup) {
 ViewHolder viewHolder = null;
 if (convertView == null) {
  viewHolder = new ViewHolder();
  convertView = mInflater.inflate(
   R.layout.common_popup_list_item, null);
  viewHolder.mTitleTv = (TextView) convertView.findViewById(R.id.tv_common_listpop_title);
  convertView.setTag(viewHolder);
 } else {
  viewHolder = (ViewHolder) convertView.getTag();
 }
 viewHolder.mTitleTv.setText(mDatas.get(i));
 return convertView;
 }

 
 public class ViewHolder {
 
 TextView mTitleTv;
 }

}

相关XML文件:

pop布局文件common_popup_list_dialog:

适配器中的布局common_popup_list_item:

注释很全,也很简单,就不多做解释.

接下来就是调用popWindow,在那调用这个popWinow比较好呢,因为要写一个通用的筛选栏,所以把这些公共的部分都提取出来,放到baseActivity中,需要用到的Activity直接继承baseActivity,方便之后使用.

创建一个baseActivity并在其中对popWindow进行处理,代码如下

baseActivity:

package com.example.junweiliu.filterdemo;

import android.app.Activity;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.PopupWindow;

import com.example.junweiliu.filterdemo.pop.CommonFilterPop;

import java.util.List;


public class baseActivity extends AppCompatActivity {

 
 private CommonFilterPop mPopupWindow;
 
 protected Activity activity;

 @Override
 protected void onCreate(@Nullable Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 this.activity = this;
 }

 
 public void showFilterPopupWindow(View parentView,
     List itemTexts,
     AdapterView.onItemClickListener itemClickListener,
     CustomerDismissListener dismissListener) {
 showFilterPopupWindow(parentView, itemTexts, itemClickListener, dismissListener, 0);
 }

 
 public void showFilterPopupWindow(View parentView,
     List itemTexts,
     AdapterView.onItemClickListener itemClickListener,
     CustomerDismissListener dismissListener, float alpha) {

 // 判断当前是否显示
 if (mPopupWindow != null && mPopupWindow.isShowing()) {
  mPopupWindow.dismiss();
  mPopupWindow = null;
 }
 mPopupWindow = new CommonFilterPop(activity, itemTexts);
 mPopupWindow.setonDismissListener(dismissListener);
 // 绑定筛选点击事件
 mPopupWindow.setonItemSelectedListener(itemClickListener);
 // 如果透明度设置为0的话,则默认设置为0.6f
 if (0 == alpha) {
  alpha = 0.6f;
 }
 // 设置背景透明度
 WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
 lp.alpha = alpha;
 activity.getWindow().setAttributes(lp);
 // 显示pop
 mPopupWindow.showAsDropDown(parentView);

 }

 
 public class CustomerDismissListener implements PopupWindow.onDismissListener {
 @Override
 public void onDismiss() {
  // 当pop消失的时候,重置背景色透明度
  WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
  lp.alpha = 1.0f;
  activity.getWindow().setAttributes(lp);
 }
 }

 
 public void hidePopListView() {
 // 判断当前是否显示,如果显示则dismiss
 if (mPopupWindow != null && mPopupWindow.isShowing()) {
  mPopupWindow.dismiss();
  mPopupWindow = null;
 }
 }
}

在baseActivity中对popWindow的显示消失做了处理,在popWindow创建时,改变了背景的透明度,重写了CustomerDismissListener来处理popWindow消失时恢复背景透明度.

搞定了popWindow之后,就来结合CheckBox来使用吧.使用时应该是这样:

// cb1操作
cb1.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
  // 将其他的cb设置为未选中,将自己设置为选中
  cb1.setChecked(true);
  cb2.setChecked(false);
  cb3.setChecked(false);
  showFilterPopupWindow(showView, showMes1, new AdapterView.onItemClickListener() {
    @Override
    public void onItemClick(AdapterView adapterView, View view, int i, long l) {
    cb1.setText(showMes1.get(position));
    }
   },
   new CustomerDismissListener(){
    @Override
    public void onDismiss() {
    super.onDismiss();
    // 消失的时候,需要将当前的cb设置为未选中
    cb1.setChecked(false);
    }
   });
  }
 });

 // cb2操作
 cb2.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
  // 将其他的cb设置为未选中,将自己设置为选中
  cb2.setChecked(true);
  cb1.setChecked(false);
  cb3.setChecked(false);
  showFilterPopupWindow(showView, showMes2, new AdapterView.onItemClickListener() {
    @Override
    public void onItemClick(AdapterView adapterView, View view, int i, long l) {
    cb2.setText(showMes1.get(position));
    }
   },
   new CustomerDismissListener(){
    @Override
    public void onDismiss() {
    super.onDismiss();
    // 消失的时候,需要将当前的cb设置为未选中
    cb2.setChecked(false);
    }
   });
  }
 });
 // cb3操作
 cb3.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
  // 将其他的cb设置为未选中,将自己设置为选中
  cb3.setChecked(true);
  cb1.setChecked(false);
  cb2.setChecked(false);
  showFilterPopupWindow(showView, showMes3, new AdapterView.onItemClickListener() {
    @Override
    public void onItemClick(AdapterView adapterView, View view, int i, long l) {
    cb3.setText(showMes3.get(position));
    }
   },
   new CustomerDismissListener(){
    @Override
    public void onDismiss() {
    super.onDismiss();
    // 消失的时候,需要将当前的cb设置为未选中
    cb3.setChecked(false);
    }
   });
  }
 });

有很多重复的部分,比如在onDismiss方法中,都是将当前cb设置为未选中状态,还有初始化选中状态部分,代码冗余太多,所以来封装一下,在baseActivity当中封装一个方法

 
 public void filterTabToggle(boolean isChecked, View showView, List showMes, AdapterView.onItemClickListener itemClickListener, final CheckBox... tabs) {
 if (isChecked) {
  if (tabs.length <= 0) {
  return;
  }
  // 第一个checkBox为当前点击选中的cb,其他cb进行setChecked(false);
  for (int i = 1; i < tabs.length; i++) {
  tabs[i].setChecked(false);
  }

  showFilterPopupWindow(showView, showMes, itemClickListener, new CustomerDismissListener() {
  @Override
  public void onDismiss() {
   super.onDismiss();
   // 当pop消失时对第一个cb进行.setChecked(false)操作
   tabs[0].setChecked(false);
  }
  });
 } else {
  // 关闭checkBox时直接隐藏popuwindow
  hidePopListView();
 }
}

考虑到通用性,用了不定长参数… ,之前用过List,不过用起来不太好用,每次使用的时候,都需要创建list然后去组装一个list,用起来怪麻烦的.这样使用的时候只需要把需要选中的cb放在不定长参数的第一位,其他需要设置未选中的cb放在之后即可.用一下:

// cb操作
cb1.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
  filterTabToggle(isChecked, showView, showMes1, new AdapterView.onItemClickListener() {
   @Override
   public void onItemClick(AdapterView adapterView, View view, int position, long l) {
   hidePopListView();
   cb1.setText(showMes1.get(position));
   }
  }, cb1, cb2, cb3);
  }
 });

用起来舒服了很多,可之后又发现了一个比较尴尬的问题.就是需要传入的showMes需要是一个List< String >,有的时候得到的数据并不是一个字符串类型的List,可能是各种类型的List< Bean >,这肿么办?解决方法有很多,比如可以这样做:

 
 List mTimes = new ArrayList<>();
 
 List mTimeStr = new ArrayList<>();

  
 public void forMatData(){
 // 初始化时间
 TimeBean timeBean1 = new TimeBean("1天内", "去玩");
 TimeBean timeBean2 = new TimeBean("3天内", "去购物");
 TimeBean timeBean3 = new TimeBean("10天内", "去旅行");
 TimeBean timeBean4 = new TimeBean("30天内", "去赚钱");
 mTimes.add(timeBean1);
 mTimes.add(timeBean2);
 mTimes.add(timeBean3);
 mTimes.add(timeBean4);
 // 获取时间中可用于筛选的数据
 for (TimeBean bean : mTimes) {
  mTimeStr.add(bean.getTimeStr());
 }
 }

可以从数据源中提取出用到的数据showMes,也不太麻烦,不过有没有更好的办法呢.毕竟每次都从不同的数据源中提取这些数据,也怪费时间的,考虑到这些之后,思来想去,想到一个不错的方法,使用通配符?,首先提出来一个公共接口baseFilter,在其中规定一个统一的获取筛选字段的方法,如下:

package com.example.junweiliu.filterdemo.bean;


public interface baseFilter {

 
 public String getFilterStr();
}

然后让需要用到筛选功能的Bean实现这个接口中的getFilterStr方法并且去实现它.再对之前的filterTabToggle方法做一下修改,如下:

Bean:

package com.example.junweiliu.filterdemo.bean;


public class TimeBean implements baseFilter{
 
 String timeStr;
 
 String timeEvent;

 public TimeBean(String timeStr, String timeEvent) {
 this.timeStr = timeStr;
 this.timeEvent = timeEvent;
 }

 public String getTimeStr() {
 return timeStr;
 }

 public void setTimeStr(String timeStr) {
 this.timeStr = timeStr;
 }

 public String getTimeEvent() {
 return timeEvent;
 }

 public void setTimeEvent(String timeEvent) {
 this.timeEvent = timeEvent;
 }

 @Override
 public String getFilterStr() {
 return timeStr;
 }
}

filterTabToggleT方法:

 
 public void filterTabToggleT(boolean isChecked, View showView, List showMes, AdapterView.onItemClickListener itemClickListener, final CheckBox... tabs) {
 if (isChecked) {
  if (tabs.length <= 0) {
  return;
  }
  // 第一个checkBox为当前点击选中的cb,其他cb进行setChecked(false);
  for (int i = 1; i < tabs.length; i++) {
  tabs[i].setChecked(false);
  }
  // 从数据源中提取出展示的筛选条件
  List showStr = new ArrayList<>();
  for (baseFilter baseFilter : showMes) {
  showStr.add(baseFilter.getFilterStr());
  }
  showFilterPopupWindow(showView, showStr, itemClickListener, new CustomerDismissListener() {
  @Override
  public void onDismiss() {
   super.onDismiss();
   // 当pop消失时对第一个cb进行.setChecked(false)操作
   tabs[0].setChecked(false);
  }
  });
 } else {
  // 关闭checkBox时直接隐藏popuwindow
  hidePopListView();
 }
 }

这样在使用的时候,直接将List< Bean > 类型的数据传进去就可以了.这样整个的通用的筛选栏就实现了.当然根据需求的不同,需要去做修改 ,不过大体的思路及实现就是这样.之后就可以这样用:

// 选择时间cb
 mTimeCb.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
  filterTabToggleT(isChecked, mTimeAll, mTimes, new AdapterView.onItemClickListener() {
   @Override
   public void onItemClick(AdapterView adapterView, View view, int position, long l) {
   hidePopListView();
   mTimeCb.setText(mTimeStr.get(position));
   }
  }, mTimeCb, mPlaceCb, mTypeCb);
  }
 });

最后贴一下完整的MainActivity和baseActivity

MainActivity:

package com.example.junweiliu.filterdemo;

import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.LinearLayout;

import com.example.junweiliu.filterdemo.bean.PlaceBean;
import com.example.junweiliu.filterdemo.bean.TimeBean;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends baseActivity {
 
 List mPopBeens = new ArrayList<>();
 
 List mTypes = new ArrayList<>();
 
 List mTimes = new ArrayList<>();
 
 List mTimeStr = new ArrayList<>();
 
 LinearLayout mPlaceAll;
 
 CheckBox mPlaceCb;
 
 LinearLayout mTypeAll;
 
 CheckBox mTypeCb;
 
 LinearLayout mTimeAll;
 
 CheckBox mTimeCb;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 initDate();
 initView();
 }


 
 private void initDate() {
 // 初始化城市
 PlaceBean placeBean1 = new PlaceBean("天津");
 PlaceBean placeBean2 = new PlaceBean("北京");
 PlaceBean placeBean3 = new PlaceBean("上海");
 PlaceBean placeBean4 = new PlaceBean("深圳");
 PlaceBean placeBean5 = new PlaceBean("四川");
 PlaceBean placeBean6 = new PlaceBean("杭州");
 PlaceBean placeBean7 = new PlaceBean("苏州");
 mPopBeens.add(placeBean1);
 mPopBeens.add(placeBean2);
 mPopBeens.add(placeBean3);
 mPopBeens.add(placeBean4);
 mPopBeens.add(placeBean5);
 mPopBeens.add(placeBean6);
 mPopBeens.add(placeBean7);
 // 初始化类型
 mTypes.add("美食");
 mTypes.add("电影");
 mTypes.add("化妆品");
 mTypes.add("衣服");
 mTypes.add("玩具");
 mTypes.add("电器");
 mTypes.add("装饰");
 mTypes.add("超市");
 // 初始化时间
 TimeBean timeBean1 = new TimeBean("1天内", "去玩");
 TimeBean timeBean2 = new TimeBean("3天内", "去购物");
 TimeBean timeBean3 = new TimeBean("10天内", "去旅行");
 TimeBean timeBean4 = new TimeBean("30天内", "去赚钱");
 mTimes.add(timeBean1);
 mTimes.add(timeBean2);
 mTimes.add(timeBean3);
 mTimes.add(timeBean4);
 // 获取时间中可用于筛选的数据
 for (TimeBean bean : mTimes) {
  mTimeStr.add(bean.getTimeStr());
 }
 }


 
 private void initView() {
 mPlaceAll = (LinearLayout) findViewById(R.id.ll_place_tab);
 mPlaceCb = (CheckBox) findViewById(R.id.cb_place);
 mTypeAll = (LinearLayout) findViewById(R.id.ll_type);
 mTypeCb = (CheckBox) findViewById(R.id.cb_type);
 mTimeAll = (LinearLayout) findViewById(R.id.ll_time);
 mTimeCb = (CheckBox) findViewById(R.id.cb_time);
 // 点击选择城市整体
 mPlaceAll.setonClickListener(new View.onClickListener() {
  @Override
  public void onClick(View view) {
  if (mPlaceCb.isChecked())
   mPlaceCb.setChecked(false);
  else
   mPlaceCb.setChecked(true);
  }
 });
 // 点击选择类型整体
 mTypeAll.setonClickListener(new View.onClickListener() {
  @Override
  public void onClick(View view) {
  if (mTypeCb.isChecked())
   mTypeCb.setChecked(false);
  else
   mTypeCb.setChecked(true);
  }
 });
 // 点击选择时间整体
 mTimeAll.setonClickListener(new View.onClickListener() {
  @Override
  public void onClick(View view) {
  if (mTimeCb.isChecked())
   mTimeCb.setChecked(false);
  else
   mTimeCb.setChecked(true);
  }
 });

 // 选择城市cb
 mPlaceCb.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
  filterTabToggleT(isChecked, mPlaceAll, mPopBeens, new AdapterView.onItemClickListener() {
   @Override
   public void onItemClick(AdapterView adapterView, View view, int position, long l) {
   hidePopListView();
   mPlaceCb.setText(mPopBeens.get(position).getFilterStr());
   }
  }, mPlaceCb, mTypeCb, mTimeCb);
  }
 });

 // 选择类型cb
 mTypeCb.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
  filterTabToggle(isChecked, mTypeAll, mTypes, new AdapterView.onItemClickListener() {
   @Override
   public void onItemClick(AdapterView adapterView, View view, int position, long l) {
   hidePopListView();
   mTypeCb.setText(mTypes.get(position));
   }
  }, mTypeCb, mPlaceCb, mTimeCb);
  }
 });
 // 选择时间cb
 mTimeCb.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
  filterTabToggle(isChecked, mTimeAll, mTimeStr, new AdapterView.onItemClickListener() {
   @Override
   public void onItemClick(AdapterView adapterView, View view, int position, long l) {
   hidePopListView();
   mTimeCb.setText(mTimeStr.get(position));
   }
  }, mTimeCb, mPlaceCb, mTypeCb);
  }
 });

 }
}

baseActivity:

package com.example.junweiliu.filterdemo;

import android.app.Activity;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.CheckBox;
import android.widget.PopupWindow;

import com.example.junweiliu.filterdemo.bean.baseFilter;
import com.example.junweiliu.filterdemo.pop.CommonFilterPop;

import java.util.ArrayList;
import java.util.List;


public class baseActivity extends AppCompatActivity {

 
 private CommonFilterPop mPopupWindow;
 
 protected Activity activity;

 @Override
 protected void onCreate(@Nullable Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 this.activity = this;
 }

 
 public void showFilterPopupWindow(View parentView,
     List itemTexts,
     AdapterView.onItemClickListener itemClickListener,
     CustomerDismissListener dismissListener) {
 showFilterPopupWindow(parentView, itemTexts, itemClickListener, dismissListener, 0);
 }

 
 public void showFilterPopupWindow(View parentView,
     List itemTexts,
     AdapterView.onItemClickListener itemClickListener,
     CustomerDismissListener dismissListener, float alpha) {

 // 判断当前是否显示
 if (mPopupWindow != null && mPopupWindow.isShowing()) {
  mPopupWindow.dismiss();
  mPopupWindow = null;
 }
 mPopupWindow = new CommonFilterPop(activity, itemTexts);
 mPopupWindow.setonDismissListener(dismissListener);
 // 绑定筛选点击事件
 mPopupWindow.setonItemSelectedListener(itemClickListener);
 // 如果透明度设置为0的话,则默认设置为0.6f
 if (0 == alpha) {
  alpha = 0.6f;
 }
 // 设置背景透明度
 WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
 lp.alpha = alpha;
 activity.getWindow().setAttributes(lp);
 // 显示pop
 mPopupWindow.showAsDropDown(parentView);

 }

 
 public void filterTabToggle(boolean isChecked, View showView, List showMes, AdapterView.onItemClickListener itemClickListener, final CheckBox... tabs) {
 if (isChecked) {
  if (tabs.length <= 0) {
  return;
  }
  // 第一个checkBox为当前点击选中的cb,其他cb进行setChecked(false);
  for (int i = 1; i < tabs.length; i++) {
  tabs[i].setChecked(false);
  }

  showFilterPopupWindow(showView, showMes, itemClickListener, new CustomerDismissListener() {
  @Override
  public void onDismiss() {
   super.onDismiss();
   // 当pop消失时对第一个cb进行.setChecked(false)操作
   tabs[0].setChecked(false);
  }
  });
 } else {
  // 关闭checkBox时直接隐藏popuwindow
  hidePopListView();
 }
 }

 
 public void filterTabToggleT(boolean isChecked, View showView, List showMes, AdapterView.onItemClickListener itemClickListener, final CheckBox... tabs) {
 if (isChecked) {
  if (tabs.length <= 0) {
  return;
  }
  // 第一个checkBox为当前点击选中的cb,其他cb进行setChecked(false);
  for (int i = 1; i < tabs.length; i++) {
  tabs[i].setChecked(false);
  }
  // 从数据源中提取出展示的筛选条件
  List showStr = new ArrayList<>();
  for (baseFilter baseFilter : showMes) {
  showStr.add(baseFilter.getFilterStr());
  }
  showFilterPopupWindow(showView, showStr, itemClickListener, new CustomerDismissListener() {
  @Override
  public void onDismiss() {
   super.onDismiss();
   // 当pop消失时对第一个cb进行.setChecked(false)操作
   tabs[0].setChecked(false);
  }
  });
 } else {
  // 关闭checkBox时直接隐藏popuwindow
  hidePopListView();
 }
 }

 
 public class CustomerDismissListener implements PopupWindow.onDismissListener {
 @Override
 public void onDismiss() {
  // 当pop消失的时候,重置背景色透明度
  WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
  lp.alpha = 1.0f;
  activity.getWindow().setAttributes(lp);
 }
 }

 
 public void hidePopListView() {
 // 判断当前是否显示,如果显示则dismiss
 if (mPopupWindow != null && mPopupWindow.isShowing()) {
  mPopupWindow.dismiss();
  mPopupWindow = null;
 }
 }
}

源码地址：Android通用的筛选栏源码

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Android实现通用筛选栏

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