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Android ListView自定义Item

2018年02月18日 ⁄ 综合 ⁄ 共 4307字 ⁄ 字号 评论关闭

先上效果图:

大概的解决思路是:

1、新建个ListView的自营一Item;

2、根据Item需要变化的内容建立个对象;

3、在新建个Adapter继承BaseAdapter

4、操作新建Adapter的getView方法

5、listview.setAdapter(myAdapter);

LisViewItem  的自定义界面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="60dip"
        android:background="@drawable/app_item_bg"
        android:gravity="center_vertical"
        android:orientation="horizontal" >

        <ImageView
            android:id="@+id/item3_apkiv"
            android:layout_width="50dip"
            android:layout_height="50dip"
            android:layout_marginLeft="10dip"
            android:background="@drawable/test_icon" />

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dip"
            android:layout_weight="1"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/item3_apkname"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="应用程序名字"
                android:textColor="@android:color/black"
                android:textSize="18dip" />

            <TextView
                android:id="@+id/item3_apkinfo"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dip"
                android:text="应用程序信息"
                android:textSize="14dip" />
        </LinearLayout>

        <Button
            android:id="@+id/item3_dlbtn"
            android:layout_width="60dip"
            android:layout_height="30dip"
            android:layout_marginRight="10dip"
            android:background="@drawable/dlbtn_selector"
            android:text="安装" />
    </LinearLayout>

    <TextView
        android:id="@+id/item3_apkdes"
        android:layout_width="fill_parent"
        android:layout_height="30dip"
        android:layout_marginLeft="5dip"
        android:layout_marginRight="5dip"
        android:gravity="center_vertical"
        android:text="应用程序描述"
        android:textSize="14dip" />

</LinearLayout>

新建Model对象

package com.example.listviewdemo;

public class MyModel {

	private String name;
	private String des;
	private String info;

	public MyModel() {
		// TODO Auto-generated constructor stub
	}
	
	public MyModel(String name, String des, String info) {
		this.name = name;
		this.des = des;
		this.info = info;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getDes() {
		return des;
	}

	public void setDes(String des) {
		this.des = des;
	}

	public String getInfo() {
		return info;
	}

	public void setInfo(String info) {
		this.info = info;
	}

}

新建Adapter

package com.example.listviewdemo;

import java.util.ArrayList;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class MyAdapter extends BaseAdapter {

	ArrayList<MyModel> models;
	LayoutInflater inflater;

	public MyAdapter(Context context, ArrayList<MyModel> models) {
		this.models = models;
		inflater = LayoutInflater.from(context);
	}

	@Override
	public int getCount() {
		return models.size();
	}

	@Override
	public Object getItem(int arg0) {
		return models.get(arg0);
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		MyModel singleModel = models.get(position);
		ViewHolder holder;
		if (convertView == null) {
			holder = new ViewHolder();
			convertView = inflater.inflate(R.layout.lv_item, null);
			holder.name_tv = (TextView) convertView.findViewById(R.id.item3_apkname);
			holder.des_tv = (TextView) convertView.findViewById(R.id.item3_apkdes);
			holder.info_tv = (TextView) convertView.findViewById(R.id.item3_apkinfo);
			convertView.setTag(holder);
		} else {
			holder = (ViewHolder) convertView.getTag();
		}
		holder.name_tv.setText(singleModel.getName());
		holder.des_tv.setText(singleModel.getDes());
		holder.info_tv.setText(singleModel.getInfo());
		return convertView;
	}

	class ViewHolder {
		TextView name_tv;
		TextView des_tv;
		TextView info_tv;
	}

}

绑定适配器

package com.example.listviewdemo;

import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

	private ListView lv;
	private MyAdapter myAdapter;
	private ArrayList<MyModel> models;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		models = new ArrayList<MyModel>();
		getData();
		lv = (ListView) findViewById(R.id.lv);
		myAdapter = new MyAdapter(this, models);
		lv.setAdapter(myAdapter);
	}

	private void getData() {
		models.clear();
		for (int i = 0; i < 10; i++) {
			MyModel singleModel = new MyModel();
			singleModel.setName("测试程序");
			singleModel.setInfo("50w用户");
			singleModel.setDes("这是一个神奇的应用!");
			models.add(singleModel);
		}
	}
}

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