1. 程式人生 > >乾貨一:通過自定義PopupWindow實現QQ選單選項功能

乾貨一:通過自定義PopupWindow實現QQ選單選項功能

概述

我們在使用手機QQ時,點選選單鍵,會彈出如本案例說演示的效果圖似的選單選項。

這裡寫圖片描述
實現方式有很多種,在這裡我們來演示下如何通過自定義PopupWindow的方式一步一步的實現如上效果。

關於PopupWindow的基本知識點請檢視 PopupWindow

分析

UI部分

  • shape的使用-corners solid等
  • 中間的使用View分割
  • 背景的處理
  • ……

功能點

  • 響應點選事件–通過介面回撥的方式
  • 點選外部,PopupWindow可消失
  • ……

實現

自定義PopupWindow

UI編寫

  • 位於父佈局的底部
  • 距邊框有一定的距離,根佈局使用layout_margin即可
  • ListView(四個圓角+白色背景) + View分割(透明色) +底部文字(圓角+白色背景)

  • 藍色字型 居中顯示(ListView中的 在Item設定即可,底部文字設定gravity即可)

  • …….

佈局檔案如下所示:

list_popupwindow.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/id_rl_relativeLayout"
    android:layout_width
="match_parent" android:layout_height="match_parent" android:layout_margin="16dp" android:padding="16dp">
<ListView android:id="@+id/id_lv_popupWindowListView" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_above
="@+id/view" android:background="@drawable/bg_menu" />
<View android:id="@+id/view" android:layout_width="match_parent" android:layout_height="20dp" android:layout_above="@+id/id_tv_bottom" android:background="@color/transparent" /> <TextView android:id="@+id/id_tv_bottom" android:layout_width="match_parent" android:layout_height="50dp" android:layout_alignParentBottom="true" android:background="@drawable/bg_menu" android:gravity="center" android:text="取消" android:textColor="@color/skyblue" android:textSize="20dp" /> </RelativeLayout>

其中用到的幾個背景xml如下,都在drawable目錄下

bg_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <!--stroke: 設定描邊,可描成實線或虛線。當然了也可以不設定stroke屬性-->
    <stroke android:color="@color/transparent"
        android:width="2dp"/>
    <!--設定形狀填充的顏色,只有android:color一個屬性-->
    <solid android:color="@color/bg_white" />
    <!-- 設定圓角,只適用於rectangle型別,可分別設定四個角不同半徑的圓角,當設定的圓角半徑很大時,比如200dp,就可變成弧形邊了-->
    <corners android:radius="10dp" />

</shape>

自定義PopupWindow編寫 +介面回撥+監聽OnTouch事件實現點選外部消失

載入自定義的xml檔案,然後獲取ListView元件,設定adapter 即可顯示UI佈局。程式碼中的註釋已經非常詳細了,再此就不多涉及了。


import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;

import com.turing.base.R;
import com.turing.nutritiousSerial.listPopupWindow.adapter.CustomPopupWindowAdpater;
import com.turing.nutritiousSerial.listPopupWindow.beans.PopupItemBean;

import java.util.List;

/**
 * MyApp
 *
 * @author Mr.Yang on 2016-04-25  10:12.
 * @version 1.0
 * @desc
 */
public class ListPopupWindow extends PopupWindow {

    //上下文
    private Context context;
    //父檢視
    private View parentView;
    //item資料來源
    private List<PopupItemBean> dataList;

    //介面卡
    private CustomPopupWindowAdpater adapter;

    //宣告介面物件
    private OnPopubItemClickListener popupItemListener;
    private OnBottomTextViewClickListener bottomTextViewListener;


    /**
     * 定義介面用於PopupItem回撥點選事件處理
     */
    public interface OnPopubItemClickListener {
        void onPopupItemClick(View view, int postion);
    }

    /**
     * 定義介面用於底部TextView回撥點選事件處理
     */
    public interface OnBottomTextViewClickListener {
        void onBottomClick();
    }

    /**
     * 建構函式
     */
    public ListPopupWindow(Context context,
                           List<PopupItemBean> dataList,
                           View parentView,
                           OnPopubItemClickListener popupItemListener,
                           OnBottomTextViewClickListener bottomTextViewListener) {

        this.context = context;
        this.dataList = dataList;
        this.parentView = parentView;

        this.popupItemListener = popupItemListener;
        this.bottomTextViewListener = bottomTextViewListener;

        initCustomPopupWindow();
    }


    /**
     * 初始化自定義的PopupWindow
     */
    private void initCustomPopupWindow() {
        // 載入自定義佈局檔案,轉化為元件
        parentView = LayoutInflater.from(context).inflate(R.layout.list_popupwindow, null);
        // 設定顯示的view
        setContentView(parentView);

        // 初始化控制元件
        ListView lv = (ListView) parentView.findViewById(R.id.id_lv_popupWindowListView);
        TextView tv = (TextView) parentView.findViewById(R.id.id_tv_bottom);

        // 設定彈出窗體的高
        this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
        this.setHeight(ViewGroup.LayoutParams.MATCH_PARENT);
        // 設定彈出窗體可點選
        this.setFocusable(true);
        // 設定SelectPicPopupWindow彈出窗體的背景
        this.setBackgroundDrawable(new ColorDrawable(0xb0000000));


        // view新增OnTouchListener監聽判斷獲取觸屏位置如果在佈局外面則銷燬彈出框
        parentView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                // getTop View自身的頂邊到其父佈局頂邊的距離,因為是根目錄所以為0
                int height = parentView.findViewById(R.id.id_rl_relativeLayout).getTop();
                // getY 點選事件距離控制元件頂邊的舉例
                int y = (int) event.getY();
                // 當擡起 並且 y>height時(也就是 只要不點選ListView範圍內),dismiss popupWindow
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    if (y > height) {
                        dismiss();
                    }
                }
                return true;
            }
        });
        // 更新位置和大小(不加這行程式碼也行)
        update();
        // 例項化介面卡
        adapter = new CustomPopupWindowAdpater(context, dataList);
        // 設定介面卡
        lv.setAdapter(adapter);


        // ListView設定點選事件
        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                // 回撥onPopupItemClick
                popupItemListener.onPopupItemClick(view, position);
            }
        });

        // TextView設定點選事件
        tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 回撥onBottomClick
                bottomTextViewListener.onBottomClick();
            }
        });

    }
}

CustomPopupWindowAdpater.java


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.turing.base.R;
import com.turing.nutritiousSerial.listPopupWindow.beans.PopupItemBean;

import java.util.List;

/**
 * MyApp
 *
 * @author Mr.Yang on 2016-04-25  11:04.
 * @version 1.0
 * @desc
 */
public class CustomPopupWindowAdpater extends BaseAdapter {

    private Context context;
    private List<PopupItemBean> datas;
    private LayoutInflater layoutInflater;

    /**
     * 建構函式
     */
    public CustomPopupWindowAdpater(Context context, List<PopupItemBean> datas) {
        this.context = context;
        this.datas = datas ;
        layoutInflater = LayoutInflater.from(context);
    }

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

    @Override
    public Object getItem(int position) {
        return datas.get(position);
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // 宣告ViewHolder
        ViewHolder viewHolder;

        if (convertView == null) {
            // 載入Item佈局,轉換為View佈局
            convertView = layoutInflater.inflate(R.layout.popup_item, parent, false);
            // 例項化ViewHolder
            viewHolder = new ViewHolder();
            // 查詢元件賦值給ViewHolder
            viewHolder.textView = (TextView) convertView.findViewById(R.id.id_tv_popupItemText);
            // 設定TAG
            convertView.setTag(viewHolder);

        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }


        // 設定Item中的值
        viewHolder.textView.setText(datas.get(position).getText()  );


        return convertView;
    }


    /**
     * 對應Item佈局中的元件
     */
    class ViewHolder {

        private TextView textView;


    }
}

呼叫

因為PopupWindow需要依賴父元件來顯示,所以例項話PopupWindow的時候,傳入根佈局View,實現介面回撥Activity類實現自定義的兩個介面,並傳入到PopupWindow中。


import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.view.View;
import android.widget.RelativeLayout;

import com.turing.base.R;
import com.turing.base.utils.AlertUtil;
import com.turing.nutritiousSerial.listPopupWindow.beans.PopupItemBean;
import com.turing.nutritiousSerial.listPopupWindow.customPopupWindow.ListPopupWindow;

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

public class ListPopupWindowDemoActivity extends AppCompatActivity implements ListPopupWindow.OnPopubItemClickListener, ListPopupWindow.OnBottomTextViewClickListener {

    // 定義父View即PopupWindow依賴浮動的View
    private RelativeLayout relativeLayout;


    private ListPopupWindow popWindow;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list_popup_window_demo);
        // 父View
        relativeLayout = (RelativeLayout) findViewById(R.id.id_rl_relativeLayout);
    }

    /**
     * 按鈕監聽事件
     *
     * @param view
     */
    public void showCustomListPopupWindow(View view) {

        // 展示資料集合
        List<PopupItemBean> datalists = new ArrayList<>();
        // List集合中的資料
        PopupItemBean itemBean1 = new PopupItemBean("版本更新");
        PopupItemBean itemBean2 = new PopupItemBean("反饋");
        PopupItemBean itemBean3 = new PopupItemBean("退出QQ");

        // 新增到List集合中
        datalists.add(itemBean1);
        datalists.add(itemBean2);
        datalists.add(itemBean3);

        // 例項化自定義ListPopupWindow
        popWindow = new ListPopupWindow(ListPopupWindowDemoActivity.this,
                datalists, relativeLayout, this, this);
        // 居中並且靠底部顯示
        popWindow.showAtLocation(relativeLayout, Gravity.CENTER | Gravity.BOTTOM, 0, 0);
    }


    @Override
    public void onBottomClick() {
        popWindow.dismiss();
        AlertUtil.showToastShort(ListPopupWindowDemoActivity.this, "點選取消");

    }

    @Override
    public void onPopupItemClick(View view, int postion) {
        switch (postion) {
            case 0:
                AlertUtil.showToastShort(ListPopupWindowDemoActivity.this, String.valueOf(postion) + " 被點選");
                break;
            case 1:
                AlertUtil.showToastShort(ListPopupWindowDemoActivity.this, String.valueOf(postion) + " 被點選");
                break;
            case 2:
                AlertUtil.showToastShort(ListPopupWindowDemoActivity.this, String.valueOf(postion) + " 被點選");
                break;
            default:
                break;
        }
    }
}