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最新推荐文章于 2024-11-15 16:21:22 发布

原创最新推荐文章于 2024-11-15 16:21:22 发布 · 294 阅读

CC 4.0 BY-SA版权

本文介绍了一个使用Android开发的简易应用，该应用通过ListView显示预设的联系人信息，包括名字和联系电话。

package com.example.userinterface;

import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class ListViewActivity  extends ActionBarActivity {
	
	ListView listView;
	TextView showinfo;
	String[] titles = {"赵1","钱2","张3","李4","王五"};
	String[] texts = {"1111","2222","3333","4444","5555"};
	int buf = R.drawable.ic_launcher;
	int[] resIds = {buf,buf,buf,buf,buf};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.listview);
        
        listView = (ListView)findViewById(R.id.list);
        showinfo = (TextView)findViewById(R.id.list_t1);
        
        listView.setAdapter(new MyAdapter(titles,texts,resIds));
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				// TODO 自动生成的方法存根
				TextView title = (TextView)view.findViewById(R.id.itemTitle);
				String info = "单击联系人是："+ title.getText();
				TextView text = (TextView)view.findViewById(R.id.itemText);
				info = info + "\n联系电话："+ text.getText();
				showinfo.setText(info);
			}
		});

    }
    
    class MyAdapter extends BaseAdapter{
    	
    	String[] itemTitles;
    	String[] itemTexts;
    	int[] itemImageRes;
    	
    	public MyAdapter (String[] itemTitles,String[] itemTexts, int[] itemImageRes){
    		this.itemTitles = itemTitles;
    		this.itemTexts = itemTexts;
    		this.itemImageRes = itemImageRes;
    	}

		@Override
		public int getCount() {
			// TODO 自动生成的方法存根
			return itemTitles.length;
		}

		@Override
		public Object getItem(int position) {
			// TODO 自动生成的方法存根
			return itemTitles[position];
		}

		@Override
		public long getItemId(int position) {
			// TODO 自动生成的方法存根
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			// TODO 自动生成的方法存根
			if(convertView == null){
				LayoutInflater inflater = (LayoutInflater)ListViewActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
				View itemView = inflater.inflate(R.layout.list_item, null);
				TextView title = (TextView)itemView.findViewById(R.id.itemTitle);
				title.setText(itemTitles[position]);
				TextView text = (TextView)itemView.findViewById(R.id.itemText);
				text.setText(itemTexts[position]);
				ImageView image = (ImageView)itemView.findViewById(R.id.itemImage);
				image.setImageResource(itemImageRes[position]);
				return itemView;
			}else{
				TextView title = (TextView)convertView.findViewById(R.id.itemTitle);
				title.setText(itemTitles[position]);
				TextView text = (TextView)convertView.findViewById(R.id.itemText);
				text.setText(itemTexts[position]);
				ImageView image = (ImageView)convertView.findViewById(R.id.itemImage);
				image.setImageResource(itemImageRes[position]);
				return convertView;
			}
		}
    	
    }
    
}

haiyou

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    
    <TextView 
        android:id="@+id/list_t1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:text="单击联系人"
        android:background="#aabbaa"
        android:padding="10dip"/>
    <ListView 
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/list_t1">
        
    </ListView>
    

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" 
    android:paddingLeft="10dip">
    
    <ImageView 
        android:id="@+id/itemImage"
        android:layout_width="wrap_content"
        android:layout_height="match_parent" />
    
    <TextView 
        android:id="@+id/itemTitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="name"
        android:textSize="24dip"
        android:layout_toRightOf="@id/itemImage"/>
    
    <TextView 
        android:id="@+id/itemText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="电话"
        android:layout_toRightOf="@id/itemImage"
        android:layout_below="@id/itemTitle"/>    

</RelativeLayout>