PopupWindow + RecyclerView的使用

来源：互联网发布：单片机如何控制电机编辑：程序博客网时间：2024/05/22 07:03

前段时间的项目中，遇到了一个对于当时的我来说，是一个比较麻烦的事，就是在使用PopupWindow做顶部的弹出菜单的时候，我用了GridView来添加itemView，结果发现在点击的时候，会出现itemView的父布局也会出现点击现象，没达到项目要求，然后就使用了RecyclerView来做这个功能。下面贴部分代码：

import android.content.Context;import android.graphics.drawable.ColorDrawable;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.annotation.Nullable;import android.support.v4.app.Fragment;import android.support.v7.widget.DefaultItemAnimator;import android.support.v7.widget.GridLayoutManager;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.PopupWindow;import android.widget.RelativeLayout;import java.util.List;/** * Created by Virczz on 2015/11/18 */public class Fm_ShouYe11 extends Fragment implements View.OnClickListener {    private View view;    private String totalUrl = "http://www.test.com";    private Gson gson = new GsonBuilder().create();    private PopupWindow popupWindow;    private RelativeLayout rl_main_titlebar;    /* 点击PopupWindow后的数据传递 */    private Handler mHandler = new Handler() {        @Override        public void handleMessage(Message msg) {            switch (msg.what) {                case 0x11:                    /* 对UI线程的操作 */                    break;            }        }    };    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        view = inflater.inflate(R.layout.shouye_fm, null);         /* 布局代码  */        initView();        return view;    }    @Override    /** PopupWindow的点击 */    public void onClick(View v) {        switch (v.getId()) {            case R.id.iv_main_menu:                /* 主页左上角的菜单 */                if (popupWindow != null && popupWindow.isShowing()) {                    return;                } else {                    /* 第一次打开PopupWindow */                    showPop();                }                break;            default:                break;        }    }    /**     * 初始化视图     */    private void initView() {        ImageView iv_main_menu;        rl_main_titlebar = (RelativeLayout) view.findViewById(R.id.rl_main_titlebar);        iv_main_menu = (ImageView) view.findViewById(R.id.iv_main_menu);        rl_main_titlebar.setOnClickListener(this);        iv_main_menu.setOnClickListener(this);    }    /**     * 展示CategoryPopupWindow     */    private void showPop() {        CategoryPopupWindow catePop = null;        catePop = new CategoryPopupWindow(getActivity());    }    /**     * CategoryPopupWindow  封装了PopupWindow的类     */    public class CategoryPopupWindow {        final String cagetoryUrl = "http://www.test.com";        private Context context;                private CategoriesRvAdapter rvAdapter;        private RecyclerView popupWindowRecycler;        /* 获取自定义布局文件categories_view的视图*/        private LayoutInflater mLayoutInflater;        private ViewGroup customView;        private StringBuffer sb = new StringBuffer();        private CategoryPopupWindow(Context context) {            this.context = context;            FirstOpenCategory();        }        /**         * 打开PopupWindow   加载数据和界面         */        private void FirstOpenCategory() {            mLayoutInflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);            customView = (ViewGroup) mLayoutInflater.inflate(R.layout.categories_view, null, false);            /* 初始化视图 */            popupWindowRecycler = (RecyclerView) customView.findViewById(R.id.recycler_categories);            /* 这句话可能导致popupWindowRecycler不能展示并报错：RecyclerView: No adapter attached; skipping layout */            popupWindowRecycler.requestFocus();            popupWindowRecycler.setHasFixedSize(true);            GridLayoutManager cateGridLayoutManager = new GridLayoutManager(context, 3);            popupWindowRecycler.setLayoutManager(cateGridLayoutManager);            popupWindowRecycler.setItemAnimator(new DefaultItemAnimator());            popupWindowRecycler.setFocusable(true);            /* 网络请求区域 */            rvAdapter = new CategoriesRvAdapter("你的List");            popupWindowRecycler.setAdapter(rvAdapter);            popupWindowRecycler.setClickable(true);            rvAdapter.setOnItemClickListener(new CategoriesRvAdapter.CustomOnItemClickListener() {                @Override                public void onItemClick(View v, int position) {                    sb.append("http://www.test.com");                    Message message = mHandler.obtainMessage();                    message.obj = sb.toString();                    message.what = 0x11;                    mHandler.sendMessage(message);                    popupWindow.dismiss();                }            });                        /* 创建PopupWindow实例 */            popupWindow = new PopupWindow(customView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);            /* 设置PopupWindow背景 */            popupWindow.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.colorWhite)));            /* 设置动画效果 [R.style.AnimationFade] */            //popupWindow.setAnimationStyle(R.style.AnimationFade);            popupWindow.update();            popupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);            popupWindow.setTouchable(true);            popupWindow.setOutsideTouchable(true);            popupWindow.setFocusable(true);            /* 设置popupWindow的位置（相对rl_main_titlebar的位置） */            int topBarHeight = rl_main_titlebar.getBottom();            popupWindow.showAsDropDown(rl_main_titlebar, 0, (topBarHeight - rl_main_titlebar.getHeight()) / 2);            /* 自定义view 添加触摸事件 */            customView.setOnTouchListener(new View.OnTouchListener() {                @Override                public boolean onTouch(View v, MotionEvent event) {                    int height = customView.findViewById(R.id.recycler_categories).getTop();                    int y = (int) event.getY();                    if (event.getAction() == MotionEvent.ACTION_UP) {                        if (y < height) {//                            popupWindow.dismiss();//这里是点击空白处消失的方法                        }                    }                    return true;                }            });        }    }}

上面在CategiriesRvAdapter里为RecyclerView重写了监听接口。

在适配器里要设置item的参数列表

public class CategoriesRvAdapter extends RecyclerView.Adapter<CategoriesRvAdapter.ViewHolder> {...ViewGroup.LayoutParams layoutParams = holder.textView.getLayoutParams();layoutParams.height = (int) (Math.random() * 100);layoutParams.height = holder.textView.getMaxHeight();layoutParams.width = holder.textView.getMaxWidth();holder.textView.setLayoutParams(layoutParams);...}

大致就是这样了，用Handler来传递需要传递的数据，就可以操作UI线程了。

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