Android HorizontalScrollView 水平滑动 listview 上动态添加图片
最近遇到了个 在listview展示广告的需要动态添加图片
如图:
使用了 horizontalScrollView 在listview上进行添加
java代码:
package com.baozi.bzhorizontalscrollview;import java.util.ArrayList;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.text.TextUtils;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.widget.ArrayAdapter;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ListView;public class MainActivity extends Activity { private ListView lv; private View headerView; private LinearLayout header_ll; ArrayList<String> arrayList = new ArrayList<String>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lv = (ListView) findViewById(R.id.lv); headerView = LayoutInflater.from(this).inflate( R.layout.item_home_header, null); header_ll = (LinearLayout) headerView.findViewById(R.id.header_ll); for (int i = 0; i < 10; i++) { View coupon_home_ad_item = LayoutInflater.from(this).inflate( R.layout.home_item, null); ImageView icon = (ImageView) coupon_home_ad_item .findViewById(R.id.coupon_ad_iv);// 拿个这行的icon 就可以设置图片 final String href = "http://www.blog.csdn.net/aaawqqq"; if (!TextUtils.isEmpty(href)) { coupon_home_ad_item.setOnClickListener(new OnClickListener() {// 每个item的点击事件加在这里 @Override public void onClick(View v) { Uri uri = Uri.parse(href); Intent intent = new Intent(Intent.ACTION_VIEW, uri); startActivity(intent); } }); } header_ll.addView(coupon_home_ad_item); } lv.addHeaderView(headerView);// 通过listview的addHeaderView方法 将header添加到 // listview里面 // listview的测试数据 for (int i = 0; i < 20; i++) { arrayList.add(i + " ------------- " + System.currentTimeMillis()); } ArrayAdapter adapter = new ArrayAdapter(this, R.layout.item, R.id.textView1, arrayList); lv.setAdapter(adapter); }}
xml代码:
activity_main.xml
<RelativeLayout 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:background="#f4f4f4" 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.baozi.bzhorizontalscrollview.MainActivity" > <ListView android:id="@+id/lv" android:layout_width="fill_parent" android:layout_height="fill_parent" > </ListView></RelativeLayout>
item_home_header.xml
<?xml version="1.0" encoding="UTF-8"?><HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:ptr="http://schemas.android.com/apk/res-auto" android:id="@+id/coupon_home_ad_hv" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:scrollbars="none" > <LinearLayout android:id="@+id/header_ll" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="15dp" android:background="#dddddd" android:orientation="horizontal" > </LinearLayout></HorizontalScrollView>
home_item.xml
<?xml version="1.0" encoding="UTF-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:ptr="http://schemas.android.com/apk/res-auto" android:id="@+id/coupon_home_ad_ll" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:layout_marginLeft="5dp" android:layout_marginRight="5dp" android:layout_marginTop="10dp" android:gravity="center" android:orientation="horizontal" > <ImageView android:id="@+id/coupon_ad_iv" android:layout_width="120dp" android:layout_height="90dp" android:layout_margin="4dp" android:background="@drawable/ic_launcher" android:scaleType="centerCrop" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="点我" android:textColor="#000000" android:textSize="20sp" /> <View android:layout_width="1dp" android:layout_height="90dp" android:background="#000000" /></FrameLayout>
步骤:
首先加载 header
headerView = LayoutInflater.from(this).inflate(R.layout.item_home_header,null);
header_ll = (LinearLayout) headerView.findViewById(R.id.header_ll);
获取header里面的 LinearLayout
将服务器获取的imageview 通过for循环 add 到header上的linearlayout
添加点击事件等
不足之处请大家指正 谢谢