View (views)--listview Simpleadapter

I. Concept

A list view, a viewgroup used to display multiple sliding item lists, and an adapter adapter to dynamically adapt the data in the collection and the layout of each item to the ListView for display.

1 <?XML version= "1.0" encoding= "Utf-8"?>2 <LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"3 Xmlns:tools= "Http://schemas.android.com/tools"4 Android:layout_width= "Match_parent"5 Android:layout_height= "Match_parent"6 Android:paddingbottom= "@dimen/activity_vertical_margin"7 Android:paddingleft= "@dimen/activity_horizontal_margin"8 Android:paddingright= "@dimen/activity_horizontal_margin"9 Android:paddingtop= "@dimen/activity_vertical_margin"Ten Tools:context= "Com.example.wang.testapp2.TestActivity8"> One  A     <ListView -         Android:layout_width= "Match_parent" - Android:layout_height= "Wrap_content" the Android:id= "@+id/lv_2"> -     </ListView> -  - </LinearLayout>

Activity.xml

1 <?XML version= "1.0" encoding= "Utf-8"?>2 <LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"3 Android:layout_width= "Match_parent"4 Android:layout_height= "Match_parent">5 6     <ImageView7         Android:layout_width= "70DP"8 Android:layout_height= "70DP"9 android:src= "@drawable/f1"Ten Android:id= "@+id/iv_2"/> One     <LinearLayout A         Android:layout_width= "0DP" - Android:layout_height= "Match_parent" - Android:layout_weight= "1" the android:orientation= "vertical" - Android:layout_marginleft= "20DP" - android:gravity= "Center_vertical"> -  +         <TextView -             Android:layout_width= "Match_parent" + Android:layout_height= "Wrap_content" A Android:text= "Name =aaa" at Android:id= "@+id/tv_7"/> -  -         <TextView -             Android:layout_width= "Match_parent" - Android:layout_height= "Wrap_content" - Android:text= "Content =aaa" in Android:id= "@+id/tv_8"/> -  to     </LinearLayout> +  - </LinearLayout>

Simple_adapter

1  Packagecom.example.wang.testapp2;2 3 Importandroid.support.v7.app.AppCompatActivity;4 ImportAndroid.os.Bundle;5 ImportAndroid.widget.ListView;6 ImportAndroid.widget.SimpleAdapter;7 8 Importjava.util.ArrayList;9 ImportJava.util.HashMap;Ten Importjava.util.List; One ImportJava.util.Map; A Importjava.util.Objects; - ImportJava.util.SimpleTimeZone; -  the  Public classTestActivity8extendsappcompatactivity { -  - ListView lv_2; -  + @Override -     protected voidonCreate (Bundle savedinstancestate) { +         Super. OnCreate (savedinstancestate); A Setcontentview (R.LAYOUT.ACTIVITY_TEST8); at  -Lv_2=(ListView) Findviewbyid (r.id.lv_2); -  -         //1. Data set Layout -  -List<map<string,object>> lm=NewArraylist<map<string,object>>(); in  -Map<string,object> map=NewHashmap<string, object>(); toMap.put ("img", R.DRAWABLE.F1); +Map.put ("name", "Gourmet 1"); -Map.put ("Content", "Introduction to Food 1"); the lm.add (map); *  $map=NewHashmap<string, object>();Panax NotoginsengMap.put ("img", R.DRAWABLE.F2); -Map.put ("name", "Gourmet 2"); theMap.put ("Content", "Introduction to Food 2"); + lm.add (map); A  themap=NewHashmap<string, object>(); +Map.put ("img", r.drawable.f3); -Map.put ("name", "Gourmet 3"); $Map.put ("Content", "Introduction to Food 3"); $ lm.add (map); -  -map=NewHashmap<string, object>(); theMap.put ("img", r.drawable.f4); -Map.put ("name", "Gourmet 4");WuyiMap.put ("Content", "Introduction to Food 4"); the lm.add (map); -  Wumap=NewHashmap<string, object>(); -Map.put ("img", r.drawable.f5); AboutMap.put ("name", "Gourmet 5"); $Map.put ("Content", "Introduction to Food 5"); - lm.add (map); -  -map=NewHashmap<string, object>(); AMap.put ("img", R.DRAWABLE.F6); +Map.put ("name", "Gourmet 6"); theMap.put ("Content", "Introduction to Food 6"); - lm.add (map); $  themap=NewHashmap<string, object>(); theMap.put ("img", R.DRAWABLE.F7); theMap.put ("name", "Gourmet 7"); theMap.put ("Content", "Introduction to Food 7"); - lm.add (map); in  themap=NewHashmap<string, object>(); theMap.put ("img", R.drawable.f8); AboutMap.put ("name", "Gourmet 8"); theMap.put ("Content", "Introduction to Food 8"); the lm.add (map); the  +map=NewHashmap<string, object>(); -Map.put ("img", r.drawable.f9); theMap.put ("name", "Gourmet 9");BayiMap.put ("Content", "Introduction to Food 9"); the lm.add (map); the  -map=NewHashmap<string, object>(); -Map.put ("img", R.DRAWABLE.F10); theMap.put ("name", "Gourmet 10"); theMap.put ("Content", "Introduction to Food 10"); the lm.add (map); the  -         //Array of array key theString [] strings={"img", "name", "content"}; the         int[] ids={r.id.iv_2,r.id.tv_7,r.id.tv_8}; the 94         //2. Create Simpleadapter theSimpleadapter simpleadapter=NewSimpleadapter ( This, the lm,r.layout.simple_adapter,strings,ids); the 98 Lv_2.setadapter (simpleadapter); About     } -}

Activity.java

View (views)--listview Simpleadapter