PopupWindow自定义类

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public class PopupWindow extends PopupWindow{    private View conentView;    private ListView popLv;    private Window window;    private WindowManager.LayoutParams layoutParams;    private Activity context;    private int type=0;    public   PopupWindow(final Activity context) {        this.context=context;        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);        conentView = inflater.inflate(R.layout.activity_popupwindow_list, null);        //屏幕的宽和高        int height = context.getWindowManager().getDefaultDisplay().getHeight();        int width = context.getWindowManager().getDefaultDisplay().getWidth();        // 设置SelectPicPopupWindow的View        this.setContentView(conentView);        // 设置SelectPicPopupWindow弹出窗体的宽        this.setWidth(width / 2 -80);        // 设置SelectPicPopupWindow弹出窗体的高        this.setHeight(RelativeLayout.LayoutParams.WRAP_CONTENT);        // 设置SelectPicPopupWindow弹出窗体可点击        this.setFocusable(true);        this.setOutsideTouchable(true);        // 刷新状态        this.update();        // 实例化一个ColorDrawable颜色为半透明        ColorDrawable dw = new ColorDrawable(/*context.getResources().getColor(R.color.white)*/0000000000);        // 点back键和其他地方使其消失,设置了这个才能触发OnDismisslistener ，设置其他控件变化等操作        this.setBackgroundDrawable(dw);        //设置窗口的透明度        lp =context.getWindow().getAttributes();        lp.alpha=0.7f;//0.0为黑色，1.0透明        context.getWindow().setAttributes(lp);        //设置pop隐藏时背景变成透明        this.setOnDismissListener(new poponDismissListener());        popLv= (ListView) conentView.findViewById(R.id. lv);        imageList.add(R.mipmap.ic);        textViewList.add("111");        imageList.add(R.mipmap.ic);        textViewList.add("2222");        popLv.setAdapter(new PopupWindowAdapter(context,imageList,textViewList));        popLv.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                if (position==0){                    PopupWindow.this.dismiss();                }else if (position==1){                    context.startActivity(new Intent(UIUtils.getContext(), XXX.class));                    PopupWindow.this.dismiss();                    lp.alpha=1.0f;                    context.getWindow().setAttributes(lp);                }            }        });    }    WindowManager.LayoutParams lp;    //调用此方法即可parent是显示在那个控件下    public void showPopupWindow(View parent) {        if (!this.isShowing()) {            this.showAsDropDown(parent, parent.getLayoutParams().width / 2, 10);        } else {            this.dismiss();            context.getWindow().setAttributes(lp);        }    }    class PopupWindowAdapter extends BaseAdapter {        private Context context;        private List<Integer> imageList;        private List<String> textViewList;          PopupWindowAdapter(Context context,List<Integer> imageList,List<String> textViewList){            this.context=context;            this.imageList=imageList;            this.textViewList=textViewList;        }        @Override        public int getCount() {            return imageList.size();        }        @Override        public Object getItem(int position) {            return position;        }        @Override        public long getItemId(int position) {            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            ViewHoldr viewHoldr;            if (convertView==null){                viewHoldr=new ViewHoldr();                convertView= LayoutInflater.from(context).inflate(R.layout.item_  popupwindow,null);                viewHoldr.popImage= (ImageView) convertView.findViewById(R.id.pop  _image);                viewHoldr.popTv= (TextView) convertView.findViewById(R.id.pop_tv);                convertView.setTag(viewHoldr);            }else{                viewHoldr = (ViewHoldr)convertView.getTag();            }            viewHoldr.popImage.setImageResource(imageList.get(position));            viewHoldr.popTv.setText(textViewList.get(position));            return convertView;        }        class ViewHoldr{            private ImageView popImage;            private TextView popTv;        }    }}
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