Android 长按Listview 每个item底部弹出菜单

时间：2016-05-12 14:37:18 阅读：434 评论：0 收藏：0 [点我收藏+]

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android界面中，有一个功能是点击listview的每个item，下方弹出两个菜单，可以点击进入别的界面，这个功能可以使用开源项目expandablelistview，的确是可以实现，但发现导入的代码过多，显得很臃肿，经过师傅指点，我采用的是如下方法，步骤如下：

1.新建一个listview，需要在外层套一层scrollview，不过使用scrollview会导致listview的高度只有一个item，需要使用自定义的listview，代码如下：

package allone.verbank.apad.client.component.fixedListView;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View.MeasureSpec;
import android.widget.ListView;

public class PriceListViewScroll extends ListView {

	public PriceListViewScroll(Context context) {
		super(context);
	}

	public PriceListViewScroll(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public PriceListViewScroll(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
				MeasureSpec.AT_MOST);
		super.onMeasure(widthMeasureSpec, expandSpec);
	}

}

listview的界面文件如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/background"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:text="***"
        android:textColor="@color/white"
        android:textSize="16sp" />

    <ScrollView
        android:id="@+id/price_scroll"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="@color/background" >

        <allone.verbank.apad.client.component.fixedListView.PriceListViewScroll
            android:id="@+id/price_quote_list"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:divider="@color/white" >
       </allone.verbank.apad.client.component.fixedListView.PriceListViewScroll>
    </ScrollView>

</LinearLayout>

2.每个item下方的菜单，其实原来是一开始隐藏一段view，有一定的高度，防止菜单，菜单则是使用popuwindow来弹出，item的xml文件如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/below_layout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_margin="10dp"
    android:background="@color/background"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:orientation="vertical" >

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <TextView
                android:id="@+id/price_quote_inst"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="0.98"
                android:gravity="right"
                android:singleLine="true"
                android:text="WYB/TEST"
                android:textColor="@color/white"
                android:textSize="20dp" >
            </TextView>

        </LinearLayout>

    <View
        android:layout_width="fill_parent"
        android:layout_height="1.2px"
        android:layout_marginLeft="14dp"
        android:layout_marginRight="14dp"
        android:layout_marginTop="5dp"
        android:background="@color/white" />

    <TextView
        android:id="@+id/hidepricemenu"
        android:layout_width="fill_parent"
        android:layout_height="30dp"
        android:visibility="gone" /><!--这是非常关键，菜单弹出来的时候，显示，没有菜单的时候为隐藏的 -->

</LinearLayout>

3.下一步就是在代码中，当长按listview时就显示hidepricemenu这个textview，以便于弹出菜单，菜单是使用popuwindow来显示，如下关键代码：

list.setOnItemLongClickListener(new OnItemLongClickListener() {

			@Override
			public boolean onItemLongClick(AdapterView<?> arg0, View sourView,
					final int arg2, long arg3) {
				hidepricemenu = (TextView) sourView
						.findViewById(R.id.hidepricemenu);
				hidepricemenu.setVisibility(View.VISIBLE);

				String selectIntrument = maps.get(arg2).get(PRICE_TC_INST)
						.toString();

				buysellLongClickAction(sourView, selectIntrument, hidepricemenu);
				return true;

			}
		});
		
		private void buysellLongClickAction(final View inner,
			final String instname, final TextView hide_PriceMenu_copy) {
		StaticContext.TRADE_INST = instname;

		if (popupMenu != null) {
			popupMenu.destroyPopupMenu();
		}
		// 浮出菜单
		popupMenu = PopupMenuFactory.createPopupWindow(getSelfActivity(),
				inner, IPopupMenu.MENU_ID_PRICE, instname);
		popupMenu.showPopupMenu();

		popupMenu.createPupupWindow().setOnDismissListener(
				new PopupWindow.OnDismissListener() {

					@Override
					public void onDismiss() {
						hide_PriceMenu_copy.setVisibility(View.GONE);
					}
				});

		// 当为最后一行的时候，弹出的菜单会被隐藏，这里使用scroll向上移动
		handler.post(new Runnable() {
			@Override
			public void run() {
				if (price_scroll.getScrollY() > 40) {
					price_scroll.scrollTo(0, price_scroll.getScrollY() + 200);
				}

			}
		});

	}

创建popuwindow的代码如下：

package allone.verbank.apad.client.component.menu.impl;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import allone.verbank.apad.client.R;
import allone.verbank.apad.client.StaticContext;
import allone.verbank.apad.client.component.menu.IPopupMenu;
import allone.verbank.apad.client.doc.DocCaptain;
import allone.verbank.apad.client.doc.IBundleCommData;
import allone.verbank.apad.client.event.IStationEventName;
import allone.verbank.apad.client.event.StationEventCaptain;
import allone.verbank.apad.client.event.StationEventData;
import allone.verbank.apad.client.frame.main.MainActivity;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.drawable.ColorDrawable;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.WindowManager;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.PopupWindow;

public class PriceTradePopupMenu implements IPopupMenu {

	private ArrayList<Map<String, Integer>> dataMap = new ArrayList<Map<String, Integer>>();
	public static final String TABLE_COLUMNID_ORDERTRADE = "ORDERTRADE";
	public static final String TABLE_COLUMNID_PRICEWARNING = "PRICEWARNING";
	private ListView listview;
	private PopupWindow popupMenu;
	private MainActivity activity;
	private View sourceView;

	private String instrument;

	public PriceTradePopupMenu(Activity activity, View sourceView, Object data) {
		this.activity = (MainActivity) activity;
		this.sourceView = sourceView;
		instrument = data.toString();
		initComponent();
	}

	private void initComponent() {
		View view = activity.getLayoutInflater().inflate(
				R.layout.popup_price_menu, null);
		listview = (ListView) view.findViewById(R.id.price_menu_list);
		addRowData();
		PriceTradeAdapter listAdapter = new PriceTradeAdapter();
		listview.setAdapter(listAdapter);

		// 创建弹出窗口
		// 窗口内容为layoutLeft，里面包含一个ListView
		// 窗口宽度跟tvLeft一样
		WindowManager wm = activity.getWindowManager();
		int width = wm.getDefaultDisplay().getWidth();// width -
														// sourceView.getWidth()
		popupMenu = new PopupWindow(view, sourceView.getWidth(),
				LayoutParams.WRAP_CONTENT);

		ColorDrawable cd = new ColorDrawable(R.color.white);
		popupMenu.setBackgroundDrawable(cd);
		// popupMenu.setAnimationStyle(R.style.AnimationFade);
		popupMenu.update();
		popupMenu.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
		popupMenu.setTouchable(true); // 设置popupwindow可点击
		popupMenu.setOutsideTouchable(true); // 设置popupwindow外部可点击
		popupMenu.setFocusable(true); // 获取焦点
		popupMenu.setTouchInterceptor(new View.OnTouchListener() {

			@Override
			public boolean onTouch(View v, MotionEvent event) {
				// 如果点击了popupwindow的外部，popupwindow也会消失
				StationEventCaptain.getInstance().fireEventDataChange(
						new StationEventData(
								IStationEventName.EVENT_NAME_PRICE_MENU_CHANGE,
								instrument));
				if (event.getAction() == MotionEvent.ACTION_OUTSIDE) {
					popupMenu.dismiss();
					return true;
				}
				return false;
			}
		});
	}

	private void addRowData() {
		dataMap.add(addRowItemData());
	}

	private HashMap<String, Integer> addRowItemData() {
		HashMap<String, Integer> mapTemp = new HashMap<String, Integer>();
		mapTemp.put(TABLE_COLUMNID_ORDERTRADE,
				IBundleCommData.MENU_PRICE_ORDERTRADE);
		mapTemp.put(TABLE_COLUMNID_PRICEWARNING,
				IBundleCommData.MENU_PRICE_PRICEWARNING);
		return mapTemp;
	}

	@Override
	public PopupWindow createPupupWindow() {
		return popupMenu;
	}

	@Override
	public void destroyPopupMenu() {
		if (popupMenu != null && popupMenu.isShowing()) {
			popupMenu.dismiss();
		}
	}

	@SuppressLint("NewApi")
	@Override
	public void showPopupMenu() {
		if (popupMenu != null && popupMenu.isShowing()) {
			popupMenu.dismiss();
		} else {
			popupMenu.showAsDropDown(sourceView, 10,
					-50 + (int) sourceView.getRotationY());
		}
	}

	public class PriceTradeAdapter extends BaseAdapter {

		@Override
		public int getCount() {
			return dataMap.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) {
			ViewHolder viewHolder = null;
			if (convertView == null) {
				viewHolder = new ViewHolder();
				convertView = activity.getLayoutInflater().inflate(
						R.layout.popup_price_menu_item, null);
				viewHolder.orderTradeView = (Button) convertView
						.findViewById(R.id.price_menu_item_ordertrade);
				viewHolder.orderTradeView
						.setOnClickListener(new OnClickListener() {

							@Override
							public void onClick(View v) {
								if (popupMenu != null) {
									popupMenu.setAnimationStyle(0);
									popupMenu.dismiss();
								}
								
							}
						});
				
				convertView.setTag(viewHolder);
			} else {
				viewHolder = (ViewHolder) convertView.getTag();
			}

			int orderTrade = Integer.parseInt(dataMap.get(position)
					.get(TABLE_COLUMNID_ORDERTRADE).toString());
			viewHolder.orderTradeView
					.setText(orderTrade == IBundleCommData.MENU_PRICE_ORDERTRADE ? activity
							.getString(R.string.pricetradepopupmenu_order) : "");
			int priceWarning = Integer.parseInt(dataMap.get(position)
					.get(TABLE_COLUMNID_PRICEWARNING).toString());
			viewHolder.priceWarningView
					.setText(priceWarning == IBundleCommData.MENU_PRICE_PRICEWARNING ? activity
							.getString(R.string.pricetradepopupmenu_pricewarnning)
							: "");

			return convertView;
		}

		private class ViewHolder {
			Button orderTradeView;
			Button priceWarningView;
		}
	}

}

4.使用这种方式的时候，当最后一个item，会出现弹出的菜单在listview的下方的，位置被遮挡住了，所以需要前面scrollview，判断下方的高度，然后进行listview的移动，使用scrollto的方法，如下代码：

	// 当为最后一行的时候，弹出的菜单会被隐藏，这里使用scroll向上移动
		if (price_scroll.getScrollY() > 10) {
price_scroll.scrollTo(0, price_scroll.getScrollY() + 200);
}
if (price_scroll.getScrollY() == 0) {
price_scroll.scrollTo(0, price_scroll.getScrollY() + 50);


}

至此就可以完成该功能，有些代码省略了，因为是公司的，有问题可以交流！！！

Android 长按Listview 每个item底部弹出菜单

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原文地址：http://blog.csdn.net/nihaoqiulinhe/article/details/51362488

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