android之listview

时间：2023-03-10 07:13:29
android之listview

首先建立res/layout/data_list.xml；

代码如下：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="horizontal"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent" >

    <ImageView

        android:id="@+id/pic"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:padding="3px"/>

    <LinearLayout

        xmlns:android="http://schemas.android.com/apk/res/android"

        android:orientation="vertical"

        android:layout_width="200px"

        android:layout_height="wrap_content"

        android:gravity="left">

        <TextView

            android:id="@+id/title"

            android:padding="3px"

            android:textSize="20px"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"/>

        <TextView

            android:id="@+id/author"

            android:padding="3px"

            android:textSize="15px"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"/>

    </LinearLayout>

    <LinearLayout

        xmlns:android="http://schemas.android.com/apk/res/android"

        android:orientation="vertical"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:gravity="left">

        <TextView

            android:id="@+id/type"

            android:padding="3px"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"/>

        <ImageView

            android:id="@+id/score"

            android:padding="3px"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"/>

    </LinearLayout>

</LinearLayout>

　　然后编写res/layout/activity_main.xml；

代码如下：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent" >

	<TextView

	    android:layout_width="fill_parent"

	    android:layout_height="wrap_content"

	    android:textSize="25px"

	    android:gravity="center_horizontal"

	    android:text="西北农林科技大学视频列表"/>

	<ListView

	    android:id="@+id/datalist"

	    android:layout_width="fill_parent"

	    android:layout_height="wrap_content"/>

</LinearLayout>

　　最后定义MainActivity类；

代码如下：

package com.example.myporject;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import android.os.Bundle;

import android.app.Activity;

import android.text.method.HideReturnsTransformationMethod;

import android.text.method.PasswordTransformationMethod;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.View.OnFocusChangeListener;

import android.view.View.OnLongClickListener;

import android.view.ViewGroup;

import android.view.WindowManager;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;

import android.widget.DatePicker;

import android.widget.DatePicker.OnDateChangedListener;

import android.widget.EditText;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.SeekBar;

import android.widget.SimpleAdapter;

import android.widget.Spinner;

import android.widget.TextView;

import android.widget.TimePicker;

import android.widget.TimePicker.OnTimeChangedListener;

public class MainActivity extends Activity {

	private int[] pic = new int[]{

			R.drawable.pic1,R.drawable.pic2,

			R.drawable.pic3,R.drawable.pic4

	};

	private String data[][] = new String[][]{

			{"编号1","白彩荣"},{"编号2","曹琦"},

			{"编号3","曾德星"},{"编号","李海涛"}

	};

	private List<Map<String,String>> list = new ArrayList<Map<String,String>>();

	private ListView datalist;

	private SimpleAdapter simpleAdapter = null;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        this.datalist = (ListView)super.findViewById(R.id.datalist);

        for(int x = 0;x<this.data.length;x++){

        	Map<String,String> map = new HashMap<String,String>();

        	map.put("pic", String.valueOf(this.pic[x]));

        	map.put("title", this.data[x][0]);

        	map.put("author", this.data[x][1]);

        	map.put("type", "免费");

        	map.put("score", String.valueOf(R.drawable.star));

        	this.list.add(map);

        }

        this.simpleAdapter = new SimpleAdapter(this,this.list,R.layout.data_list,new String[]{"pic","title","author","type","score"},new int[]{R.id.pic,R.id.title,R.id.author,R.id.type,R.id.score});

        this.datalist.setAdapter(this.simpleAdapter);

    }

}

　　注：需要在res/drawable文件中添加相应图片。

相应效果：

android之listview

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