SimpleAdapter和Baseadapter填充listActivity-android学习之旅()
来源:互联网 发布:品茗软件多少钱一套 编辑:程序博客网 时间:2024/05/01 05:28
简介
SimpleAdapter的功能是能够为AbsListView提供复杂的数据,需要构造ListView
代码示例
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>
监听事件
有两种方式:
1.OnItemClickListener()
2.OnItemSelectorListener()
这两种方式都是基于AdapterView提供的。
BaseAdapter简介
使用BaseAdapter可以获得对Adapter的控制权,创建多少个列表项以及每个列表项的组件都可以在继承的复写方法里面定义。
废话不多说,代码示例
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+"个"); line.addView(image); line.addView(text); return line; } }; ListView myList = (ListView) findViewById(R.id.myList); myList.setAdapter(adapter); }}
0 0
- SimpleAdapter和Baseadapter填充listActivity-android学习之旅()
- android 适配器simpleadapter和baseadapter
- android---------ArrayAdapter、SimpleAdapter和BaseAdapter
- android-----ArrayAdapter、SimpleAdapter和BaseAdapter
- Android之基于BaseAdapter和SimpleAdapter的GridView
- Android适配器之ArrayAdapter、SimpleAdapter和BaseAdapter的简单用法
- ListActivity和SimpleAdapter
- Android学习笔记---(自己实现SimpleAdapter)BaseAdapter
- Android:ListActivity之学习
- Android之ListView使用方法-ArrayAdapter-SimpleAdapter-BaseAdapter
- Android中SimpleAdapter,ArrayAdapter和BaseAdapter详解
- Android中SimpleAdapter,ArrayAdapter和BaseAdapter小记
- Android中SimpleAdapter,ArrayAdapter和BaseAdapter详解
- Android中SimpleAdapter,ArrayAdapter和BaseAdapter
- Android列表视图ListView和ListActivity-android学习之旅(二十四)
- android中的适配器(ArrayAdapter,SimpleAdapter,BaseAdapter)
- BaseAdapter(和SimpleAdapter)的使用
- SimpleAdapter和BaseAdapter
- The Professional Programmer
- 河南哪治自闭症
- bash将执行结果保存为变量
- 网络连接
- Put Everything Under Version Control
- SimpleAdapter和Baseadapter填充listActivity-android学习之旅()
- 实现iOS应用图标右上角数字badge number提醒
- 河南哪儿治疗自闭症专业
- S5PV210友善smart tiny 210板子led测试程序 test程序不能再板子运行
- 沙箱中的间谍——可行的 JavaScript 高速缓存区攻击
- proc * 11g PCC-S-02015 错误解决方案
- iOS中的排序笔记
- Chisel实验笔记(一)
- 简单工厂类