SimpleAdapter和Baseadapter填充listActivity-android學習之旅（）

標籤：android

簡介

SimpleAdapter的功能是能夠為AbsListView提供複雜的資料，需要構造ListView

程式碼範例

package peng.liu.testview;import android.app.Activity;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.SimpleAdapter;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;public class MainActivity extends Activity {    ListView myList = null;    String[] names = new String[]{            "hello","world", "hello","world"    };    String[] desc = new String[]{            "java","c#","python","swift"    };    private int[] imageIds = new int[]{R.drawable.ic_launcher,R.drawable.ic_launcher,            R.drawable.ic_launcher,R.drawable.ic_launcher};    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        List<Map<String,Object>> listItems = new ArrayList<Map<String, Object>>();        for (int i = 0;i<names.length;i++){            Map<String,Object> map = new HashMap<String, Object>();            map.put("header",imageIds[i]);            map.put("name",names[i]);            map.put("desc",desc[i]);            listItems.add(map);        }        SimpleAdapter adapter = new SimpleAdapter(this,listItems,R.layout.simple_item,new String[]{                "name","desc","header"        },new int[]{R.id.name,R.id.desc,R.id.header});        myList = (ListView) findViewById(R.id.myList);        myList.setAdapter(adapter);    }}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:paddingBottom="@dimen/activity_vertical_margin"    tools:context=".MainActivity"    android:orientation="vertical">    <ImageView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:paddingLeft="10dp"        android:id="@+id/header"/>    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:orientation="vertical">        <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:paddingLeft="10dp"        android:textSize="20dp"        android:background="#f0f"        android:id="@+id/name"/>        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:paddingLeft="10dp"            android:textSize="14dp"            android:id="@+id/desc"/>        </LinearLayout></LinearLayout>

監聽事件

有兩種方式：
1.OnItemClickListener（）
2.OnItemSelectorListener（）
這兩種方式都是基於AdapterView提供的。

BaseAdapter簡介

使用BaseAdapter可以獲得對Adapter的控制權，建立多少個清單項目以及每個清單項目的組件都可以在繼承的複寫方法裡面定義。

廢話不多說，程式碼範例

package peng.liu.testview;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.ArrayAdapter;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.SimpleAdapter;import android.widget.TextView;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        BaseAdapter adapter = new BaseAdapter() {            @Override            public int getCount() {                return 40;            }            @Override            public Object getItem(int i) {                return null;            }            @Override            public long getItemId(int i) {                return i;            }            @Override            public View getView(int i, View view, ViewGroup viewGroup) {                LinearLayout line = new LinearLayout(MainActivity.this);                line.setOrientation(LinearLayout.VERTICAL);                ImageView image = new ImageView(MainActivity.this);                image.setImageResource(R.drawable.ic_launcher);                TextView text = new TextView(MainActivity.this);                text.setTextSize(20);                text.setTextColor(Color.RED);                text.setText("第"+i+"個");                line.addView(image);                line.addView(text);                return line;            }        };        ListView myList = (ListView) findViewById(R.id.myList);        myList.setAdapter(adapter);    }}

SimpleAdapter和Baseadapter填充listActivity-android學習之旅（）