本文实例为大家分享了Android实现美团下拉功能的具体代码,供大家参考,具体内容如下
效果图
实现
布局文件:
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "match_parent" android:background = "#f0f0f0" android:orientation = "vertical" > < FrameLayout android:id = "@+id/titlebar_layout" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:background = "#5555" > < RelativeLayout android:layout_width = "match_parent" android:layout_height = "50dp" android:background = "#ffffff" android:gravity = "center_vertical" android:orientation = "horizontal" > < LinearLayout android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_alignParentLeft = "true" android:layout_centerVertical = "true" android:layout_marginLeft = "5dp" android:gravity = "center_vertical" > < ImageView android:layout_width = "25dp" android:layout_height = "25dp" android:onClick = "back" android:src = "@mipmap/icon_arrow_green" /> < TextView android:id = "@+id/supplier_list_title_tv" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_marginLeft = "5dp" android:text = "全部" android:textColor = "#39ac69" android:textSize = "18dp" /> </ LinearLayout > < ImageView android:id = "@+id/supplier_list_cart_iv" android:layout_width = "25dp" android:layout_height = "25dp" android:layout_alignParentRight = "true" android:layout_centerVertical = "true" android:layout_marginRight = "15dp" android:src = "@mipmap/icon_car" /> </ RelativeLayout > </ FrameLayout > < View android:layout_width = "match_parent" android:layout_height = "1dp" android:background = "#E2E2E2" /> < LinearLayout android:layout_width = "match_parent" android:layout_height = "40dp" android:background = "#ffffff" android:orientation = "horizontal" > < LinearLayout android:id = "@+id/supplier_list_product" android:layout_width = "0dp" android:layout_height = "match_parent" android:layout_weight = "1" android:gravity = "center" android:orientation = "horizontal" > < TextView android:id = "@+id/supplier_list_product_tv" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:gravity = "center" android:text = "全部" android:textSize = "14dp" /> < ImageView android:layout_width = "25dp" android:layout_height = "25dp" android:src = "@mipmap/icon_arrow_down" /> </ LinearLayout > < LinearLayout android:id = "@+id/supplier_list_sort" android:layout_width = "0dp" android:layout_height = "match_parent" android:layout_weight = "1" android:gravity = "center" android:orientation = "horizontal" > < TextView android:id = "@+id/supplier_list_sort_tv" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:gravity = "center" android:text = "综合排序" android:textSize = "14dp" /> < ImageView android:layout_width = "25dp" android:layout_height = "25dp" android:src = "@mipmap/icon_arrow_down" /> </ LinearLayout > < LinearLayout android:id = "@+id/supplier_list_activity" android:layout_width = "0dp" android:layout_height = "match_parent" android:layout_weight = "1" android:gravity = "center" android:orientation = "horizontal" > < TextView android:id = "@+id/supplier_list_activity_tv" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:gravity = "center" android:text = "优惠活动" android:textSize = "14dp" /> < ImageView android:layout_width = "25dp" android:layout_height = "25dp" android:src = "@mipmap/icon_arrow_down" /> </ LinearLayout > </ LinearLayout > < View android:layout_width = "match_parent" android:layout_height = "0.5dp" android:background = "#E2E2E2" /> < RelativeLayout android:layout_width = "match_parent" android:layout_height = "match_parent" > < ListView android:id = "@+id/supplier_list_lv" android:layout_width = "match_parent" android:layout_height = "match_parent" android:layout_marginTop = "10dp" android:cacheColorHint = "@android:color/transparent" android:divider = "#f0f0f0" android:dividerHeight = "10dp" android:fadingEdge = "none" android:listSelector = "#00000000" android:scrollbarStyle = "outsideOverlay" android:scrollingCache = "false" /> < ProgressBar android:id = "@+id/progress" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_centerInParent = "true" android:indeterminateDrawable = "@drawable/shape_progress" android:indeterminateDuration = "1000" /> </ RelativeLayout > </ LinearLayout > |
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:background = "#ffffff" android:orientation = "vertical" > < LinearLayout android:layout_width = "match_parent" android:layout_height = "wrap_content" android:gravity = "center_vertical" android:orientation = "horizontal" > < TextView android:id = "@+id/listview_popwind_tv" android:layout_width = "match_parent" android:layout_height = "45dp" android:layout_marginLeft = "15dp" android:layout_marginRight = "15dp" android:gravity = "center_vertical" android:text = "地点" android:textColor = "#5a5959" android:textSize = "18dp" /> </ LinearLayout > < View android:layout_width = "match_parent" android:layout_height = "1dp" android:layout_marginLeft = "15dp" android:layout_marginRight = "15dp" android:background = "#E2E2E2" /> </ LinearLayout > |
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "match_parent" android:background = "#5000" android:orientation = "vertical" > < ListView android:id = "@+id/popwin_supplier_list_lv" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:cacheColorHint = "@android:color/transparent" android:divider = "#0000" android:dividerHeight = "0dp" android:fadingEdge = "none" android:listSelector = "#00000000" android:scrollbarStyle = "outsideOverlay" android:scrollbars = "none" android:scrollingCache = "false" /> < LinearLayout android:id = "@+id/popwin_supplier_list_bottom" android:layout_width = "match_parent" android:layout_height = "0dp" android:layout_weight = "1" android:orientation = "vertical" /> </ LinearLayout > |
Activity代码:
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package com.example.hfs.popwindowmeituan; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.app.Activity; import android.content.Intent; import android.graphics.Color; import android.graphics.drawable.BitmapDrawable; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.PopupWindow; import android.widget.ProgressBar; import android.widget.SimpleAdapter; import android.widget.TextView; import android.widget.Toast; import android.widget.AdapterView.OnItemClickListener; import android.widget.PopupWindow.OnDismissListener; public class MainActivity extends Activity implements OnClickListener { private ListView listView, popListView; private ProgressBar progressBar; private List<Map<String, String>> menuData1, menuData2, menuData3; private PopupWindow popMenu; private SimpleAdapter menuAdapter1, menuAdapter2, menuAdapter3; private LinearLayout product, sort, activity; private ImageView cartIv; private TextView productTv, sortTv, activityTv, titleTv; private int green, grey; private String currentProduct, currentSort, currentActivity; private int menuIndex = 0 ; private Intent intent; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_supplier_list); findView(); initMenuData(); initPopMenu(); } private void initMenuData() { menuData1 = new ArrayList<Map<String, String>>(); String[] menuStr1 = new String[] { "全部" , "粮油" , "衣服" , "图书" , "电子产品" , "酒水饮料" , "水果" }; Map<String, String> map1; for ( int i = 0 , len = menuStr1.length; i < len; ++i) { map1 = new HashMap<String, String>(); map1.put( "name" , menuStr1[i]); menuData1.add(map1); } menuData2 = new ArrayList<Map<String, String>>(); String[] menuStr2 = new String[] { "综合排序" , "配送费最低" }; Map<String, String> map2; for ( int i = 0 , len = menuStr2.length; i < len; ++i) { map2 = new HashMap<String, String>(); map2.put( "name" , menuStr2[i]); menuData2.add(map2); } menuData3 = new ArrayList<Map<String, String>>(); String[] menuStr3 = new String[] { "优惠活动" , "特价活动" , "免配送费" , "可在线支付" }; Map<String, String> map3; for ( int i = 0 , len = menuStr3.length; i < len; ++i) { map3 = new HashMap<String, String>(); map3.put( "name" , menuStr3[i]); menuData3.add(map3); } } @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.supplier_list_product: productTv.setTextColor(Color.parseColor( "#39ac69" )); popListView.setAdapter(menuAdapter1); popMenu.showAsDropDown(product, 0 , 2 ); menuIndex = 0 ; break ; case R.id.supplier_list_sort: sortTv.setTextColor(Color.parseColor( "#39ac69" )); popListView.setAdapter(menuAdapter2); popMenu.showAsDropDown(product, 0 , 2 ); menuIndex = 1 ; break ; case R.id.supplier_list_activity: activityTv.setTextColor(Color.parseColor( "#39ac69" )); popListView.setAdapter(menuAdapter3); popMenu.showAsDropDown(product, 0 , 2 ); menuIndex = 2 ; break ; } } protected void findView() { listView = (ListView) findViewById(R.id.supplier_list_lv); product = (LinearLayout) findViewById(R.id.supplier_list_product); sort = (LinearLayout) findViewById(R.id.supplier_list_sort); activity = (LinearLayout) findViewById(R.id.supplier_list_activity); productTv = (TextView) findViewById(R.id.supplier_list_product_tv); sortTv = (TextView) findViewById(R.id.supplier_list_sort_tv); activityTv = (TextView) findViewById(R.id.supplier_list_activity_tv); titleTv = (TextView) findViewById(R.id.supplier_list_title_tv); cartIv = (ImageView) findViewById(R.id.supplier_list_cart_iv); progressBar = (ProgressBar) findViewById(R.id.progress); product.setOnClickListener( this ); sort.setOnClickListener( this ); activity.setOnClickListener( this ); cartIv.setOnClickListener( this ); } private void initPopMenu() { initMenuData(); View contentView = View.inflate( this , R.layout.popwin_supplier_list, null ); popMenu = new PopupWindow(contentView, LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT); popMenu.setOutsideTouchable( true ); popMenu.setBackgroundDrawable( new BitmapDrawable()); popMenu.setFocusable( true ); popMenu.setAnimationStyle(R.style.popwin_anim_style); popMenu.setOnDismissListener( new OnDismissListener() { public void onDismiss() { productTv.setTextColor(Color.parseColor( "#5a5959" )); sortTv.setTextColor(Color.parseColor( "#5a5959" )); activityTv.setTextColor(Color.parseColor( "#5a5959" )); } }); popListView = (ListView) contentView .findViewById(R.id.popwin_supplier_list_lv); contentView.findViewById(R.id.popwin_supplier_list_bottom) .setOnClickListener( new OnClickListener() { public void onClick(View arg0) { popMenu.dismiss(); } }); menuAdapter1 = new SimpleAdapter( this , menuData1, R.layout.item_listview_popwin, new String[] { "name" }, new int [] { R.id.listview_popwind_tv }); menuAdapter2 = new SimpleAdapter( this , menuData2, R.layout.item_listview_popwin, new String[] { "name" }, new int [] { R.id.listview_popwind_tv }); menuAdapter3 = new SimpleAdapter( this , menuData3, R.layout.item_listview_popwin, new String[] { "name" }, new int [] { R.id.listview_popwind_tv }); popListView.setOnItemClickListener( new OnItemClickListener() { public void onItemClick(AdapterView<?> arg0, View arg1, int pos, long arg3) { popMenu.dismiss(); if (menuIndex == 0 ) { currentProduct = menuData1.get(pos).get( "name" ); titleTv.setText(currentProduct); productTv.setText(currentProduct); Toast.makeText(MainActivity. this , currentProduct, Toast.LENGTH_SHORT).show(); } else if (menuIndex == 1 ) { currentSort = menuData2.get(pos).get( "name" ); titleTv.setText(currentSort); sortTv.setText(currentSort); Toast.makeText(MainActivity. this , currentSort, Toast.LENGTH_SHORT).show(); } else { currentActivity = menuData3.get(pos).get( "name" ); titleTv.setText(currentActivity); activityTv.setText(currentActivity); Toast.makeText(MainActivity. this , currentActivity, Toast.LENGTH_SHORT).show(); } } }); } } |
其实和我博客里面有一篇自定义Spinner很像
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/Greathfs/article/details/52089888?utm_source=blogxgwz1