先看一下效果：

效果就是这样，看一下实现，其实也没多难，就是想开源出来供小伙伴们使用，如有不合理地方，希望大家多多指正。

1.自定义PopWindow

首先我们分析一下，这样的效果肯定是一个PopWindow嵌套着listview，而上面的title、和下面的cancel是两个文本框，实现起来也比较简单。

然后我们在PopWindow中声明两个接口，用来回调cancel和item的点击事件

public interface OnPopItemClickListener{

void onPopItemClick(View view,int position);

}

public interface OnBottomTextviewClickListener{

void onBottomClick();

}

然后再设置一些PopWindow的一些属性

parentView = LayoutInflater.from(context).inflate(R.layout.list_popwindow,null);

setContentView(parentView);

lv = (ListView) parentView.findViewById(R.id.lv_popwindow);

//设置弹出窗体的高

this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);

this.setHeight(ViewGroup.LayoutParams.MATCH_PARENT);

//设置弹出窗体可点击

this.setFocusable(true);

//实例化一个ColorDrawable颜色为半透明

ColorDrawable dw = new ColorDrawable(0xb0000000);

//设置SelectPicPopupWindow弹出窗体的背景

this.setBackgroundDrawable(dw);

看一下整体的代码吧：

public class ListPopWindow extends PopupWindow{

private Context context; //上下文

private View parentView; //父视图

private List dataList; //item数据源

private OnPopItemClickListener listener; //item点击接口

private ListView lv; //item列表视图

private View viewTop; //title视图

private String topText,bottomText; //title文字，bottom文字

private TextView tvTop,tvBottom; //title文本，bottom文本

private PopWindowAdapter adapter; //适配器

private OnBottomTextviewClickListener bottomListener;//底部点击接口

public interface OnPopItemClickListener{

void onPopItemClick(View view,int position);

}

public interface OnBottomTextviewClickListener{

void onBottomClick();

}

public ListPopWindow(Context context,OnPopItemClickListener listener,OnBottomTextviewClickListener bottomListener,

View parentView,List dataList,String bottomText,String topText){

this.context = context;

this.listener = listener;

this.parentView = parentView;

this.dataList = dataList;

this.bottomListener = bottomListener;

this.topText = topText;

this.bottomText = bottomText;

initViews();

}

private void initViews(){

parentView = LayoutInflater.from(context).inflate(R.layout.list_popwindow,null);

setContentView(parentView);

lv = (ListView) parentView.findViewById(R.id.lv_popwindow);

//设置弹出窗体的高

this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);

this.setHeight(ViewGroup.LayoutParams.MATCH_PARENT);

//设置弹出窗体可点击

this.setFocusable(true);

//实例化一个ColorDrawable颜色为半透明

ColorDrawable dw = new ColorDrawable(0xb0000000);

//设置SelectPicPopupWindow弹出窗体的背景

this.setBackgroundDrawable(dw);

//view添加OnTouchListener监听判断获取触屏位置如果在布局外面则销毁弹出框

parentView.setOnTouchListener(new View.OnTouchListener() {

public boolean onTouch(View v, MotionEvent event) {

int height = parentView.findViewById(R.id.ll_bottom).getTop();

int y = (int) event.getY();

if (event.getAction() == MotionEvent.ACTION_UP) {

if (y > height) {

dismiss();

}

}

return true;

}

});

update();

viewTop = parentView.findViewById(R.id.view_line1);

tvBottom = (TextView) parentView.findViewById(R.id.tv_popwindow_bottom);

tvTop = (TextView) parentView.findViewById(R.id.tv_popwindow_first);

adapter = new PopWindowAdapter(context,dataList,false);

lv.setAdapter(adapter);

if (!TextUtils.isEmpty(topText)){

tvTop.setVisibility(View.VISIBLE);

tvTop.setText(topText);

viewTop.setVisibility(View.VISIBLE);

}

else {

tvTop.setVisibility(View.GONE);

viewTop.setVisibility(View.GONE);

}

if (!TextUtils.isEmpty(bottomText)){

tvBottom.setVisibility(View.VISIBLE);

tvBottom.setText(bottomText);

}

else {

tvBottom.setVisibility(View.GONE);

}

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {

@Override

public void onItemClick(AdapterView> adapterView, View view, int i, long l) {

listener.onPopItemClick(view, i);

}

});

tvBottom.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

bottomListener.onBottomClick();

}

});

}

}

2.看一些item的bean

这里我就声明了title和图片的id

package com.hankkin.library;

public class PopBean {

private String title;

private int icon_res;

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

public int getIcon_res() {

return icon_res;

}

public void setIcon_res(int icon_res) {

this.icon_res = icon_res;

}

public PopBean(String title, int icon_res) {

this.title = title;

this.icon_res = icon_res;

}

}

3.自定义adapter适配器

这里面可能要注意的就是item的背景设置，有的是上半部分圆角、有的是下半部分圆角，特殊处理一下

@Override

public View getView(int i, View view, ViewGroup viewGroup) {

ViewHolder holder;

if (view == null) {

view = inflater.inflate(R.layout.listview_popwindow_item, null);

holder = new ViewHolder();

holder.tv_name = (TextView) view.findViewById(R.id.tv_title);

holder.v_line = (View) view.findViewById(R.id.v_line);

view.setTag(holder);

} else {

holder = (ViewHolder) view.getTag();

}

holder.tv_name.setText(dataList.get(i).getTitle());

if (dataList.size() - 1 == i) {

holder.v_line.setVisibility(View.INVISIBLE);

holder.tv_name.setBackground(context.getResources().getDrawable(R.drawable.selector_bottom_half));

} else {

holder.v_line.setVisibility(View.VISIBLE);

holder.tv_name.setBackground(context.getResources().getDrawable(R.drawable.list_gray_item));

}

return view;

}

最后看一下调用

Activity需要实现item接口(OnPopItemClickListener)和底部按钮接口(OnBottomTextviewClickListener)

public void show(View view){

List pops = new ArrayList<>();

for (int i=0;i<5;i++){

PopBean pop = new PopBean("item"+i,0);

pops.add(pop);

}

popWindow = new ListPopWindow(MainActivity.this,this,this,rl,pops,"cancel","title");

popWindow.showAtLocation(rl, Gravity.CENTER| Gravity.BOTTOM,0,0);

}

以上就是本文的全部内容，希望能够对大家的学习有所帮助。