listView的多条目加载（类似头条新闻之类的）

package com.example.listview的多条目加载;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

private ListView lv;

private static final int TYPE_O=0;

private static final int TYPE_1=1;

// private MyBaseAdapter adapter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

lv= (ListView) findViewById(R.id.listview);

// adapter=new MyBaseAdapter();

lv.setAdapter(new MyBaseAdapter());

}

class MyBaseAdapter extends BaseAdapter{

@Override

public int getCount() {

return 20;

}

@Override

public Object getItem(int i) {

return null;

}

@Override

public long getItemId(int i) {

return 0;

}

@Override

public int getItemViewType(int position) {

if(position%2==0){

return TYPE_O;

}else{

return TYPE_1;

}

}

@Override

public int getViewTypeCount() {

return 2;

}

@Override

public View getView(int i, View view, ViewGroup viewGroup) {

int type=getItemViewType(i);

ViewHolder holder=null;

ViewHolder2 holder2=null;

switch (type){

case 1: {

if (view == null) {

holder=new ViewHolder();

view = View.inflate(MainActivity.this, R.layout.item01, null);

holder.ivIcon01 = (ImageView) view.findViewById(R.id.ivIcon01);

holder.tvContent01 = (TextView) view.findViewById(R.id.tvContent);

view.setTag(holder);

} else {

holder = (ViewHolder) view.getTag();

}

}

break;

case 0:{

if(view==null){

holder2=new ViewHolder2();

view=View.inflate(MainActivity.this,R.layout.item02,null);

holder2.ivIcon02= (ImageView) view.findViewById(R.id.ivIcon02);

holder2.tvContent02= (TextView) view.findViewById(R.id.tvContent02);

view.setTag(holder2);

}else{

holder2= (ViewHolder2) view.getTag();

}

}

break;

}

switch (type){

case 0:

{

holder2.tvContent02.setText("左字右图");

}

break;

case 1:

{

holder.tvContent01.setText("左图右字");

}

break;

}

return view;

}

class ViewHolder{

ImageView ivIcon01;

TextView tvContent01;

}

class ViewHolder2{

ImageView ivIcon02;

TextView tvContent02;

}

}

  

下面是一些布局，listview

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"    android:layout_width="match_parent" android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.listview05.MainActivity">    <ListView        android:id="@+id/listview"        android:layout_width="match_parent"        android:layout_height="wrap_content"></ListView></RelativeLayout>

item01

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="horizontal"    android:layout_width="match_parent"    android:layout_height="match_parent"><ImageView    android:id="@+id/ivIcon01"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:src="@mipmap/ic_launcher"    />    <TextView        android:id="@+id/tvContent"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="00000000000"        /></LinearLayout>

item02

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="horizontal"    android:layout_width="match_parent"    android:layout_height="match_parent">    <TextView        android:id="@+id/tvContent02"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="000000000"        />    <ImageView        android:id="@+id/ivIcon02"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@mipmap/ic_launcher"        /></LinearLayout>