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Android 横向列表GridView 实现横向滚动

时间:2014-12-05 18:51:36      阅读:348      评论:0      收藏:0      [点我收藏+]

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Android 横向列表实现,可左右滑动,如下图

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1.主界面布局代码:activity_main.xml

a.包裹HorizontalScrollView控件是GirdView横向滚动的基本条件
b.GirdView外包裹LinearLayout是java代码中参数设置的必要条件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <HorizontalScrollView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp" >

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:layout_margin="10dp" >

            <GridView
                android:id="@+id/grid"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:gravity="center"
                android:numColumns="auto_fit"
                android:stretchMode="spacingWidthUniform" >
            </GridView>
        </LinearLayout>
    </HorizontalScrollView>

</LinearLayout>

2.主界面GridView列表子项布局文件:list_item.xml

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

    <ImageView
        android:id="@+id/ItemImage"
        android:layout_width="80.0dip"
        android:layout_height="80.0dip"
        android:layout_gravity="center_horizontal"
        android:src="@drawable/china" >
    </ImageView>

    <TextView
        android:id="@+id/tvCity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Title"
        android:textColor="#000000" >
    </TextView>

    <TextView
        android:id="@+id/tvCode"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Info"
        android:textColor="#000000" >
    </TextView>

</LinearLayout>

3.java实现代码:MainActivity.java

package com.example.horizontallistview;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

/***
 * 
 * @author ymw
 * @summary 博客地址欢迎访问: http://www.cnblogs.com/_ymw
 */
public class MainActivity extends Activity {

    List<CityItem> cityList;
    RelativeLayout itmel;
    GridView gridView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        LayoutInflater layoutInflater = (LayoutInflater) this
                .getSystemService("layout_inflater");
        gridView = (GridView) findViewById(R.id.grid);
        setData();
        setGridView();
    }
    /**设置数据*/
    private void setData() {
        cityList = new ArrayList<CityItem>();
        CityItem item = new CityItem();
        item.setCityName("深圳");
        item.setCityCode("0755");
        cityList.add(item);
        item = new CityItem();
        item.setCityName("上海");
        item.setCityCode("021");
        cityList.add(item);
        item = new CityItem();
        item.setCityName("广州");
        item.setCityCode("020");
        cityList.add(item);
        item = new CityItem();
        item.setCityName("北京");
        item.setCityCode("010");
        cityList.add(item);
        item = new CityItem();
        item.setCityName("武汉");
        item.setCityCode("027");
        cityList.add(item);
        item = new CityItem();
        item.setCityName("孝感");
        item.setCityCode("0712");
        cityList.add(item);
        cityList.addAll(cityList);
    }
    
/**设置GirdView参数,绑定数据*/
private void setGridView() { int size = cityList.size(); int length = 100; DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); float density = dm.density; int gridviewWidth = (int) (size * (length + 4) * density); int itemWidth = (int) (length * density); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams( gridviewWidth, LinearLayout.LayoutParams.FILL_PARENT); gridView.setLayoutParams(params); // 设置GirdView布局参数,横向布局的关键 gridView.setColumnWidth(itemWidth); // 设置列表项宽 gridView.setHorizontalSpacing(5); // 设置列表项水平间距 gridView.setStretchMode(GridView.NO_STRETCH); gridView.setNumColumns(size); // 设置列数量=列表集合数 GridViewAdapter adapter = new GridViewAdapter(getApplicationContext(), cityList); gridView.setAdapter(adapter); }
/**GirdView 数据适配器*/
public class GridViewAdapter extends BaseAdapter { Context context; List<CityItem> list; public GridViewAdapter(Context _context, List<CityItem> _list) { this.list = _list; this.context = _context; }
@Override
public int getCount() { return list.size(); } @Override public Object getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { LayoutInflater layoutInflater = LayoutInflater.from(context); convertView = layoutInflater.inflate(R.layout.list_item, null); TextView tvCity = (TextView) convertView.findViewById(R.id.tvCity); TextView tvCode = (TextView) convertView.findViewById(R.id.tvCode); CityItem city = list.get(position); tvCity.setText(city.getCityName()); tvCode.setText(city.getCityCode()); return convertView; } } public class CityItem { private String cityName; private String cityCode; public String getCityName() { return cityName; } public void setCityName(String cityName) { this.cityName = cityName; } public String getCityCode() { return cityCode; } public void setCityCode(String cityCode) { this.cityCode = cityCode; } } }

 

4.项目代码如下链接:

http://files.cnblogs.com/_ymw/HorizontalListView_%E5%8D%9A%E5%AE%A2%E9%99%84%E4%BB%B6.rar

 

Android 横向列表GridView 实现横向滚动

标签:android   style   blog   http   io   ar   color   os   sp   

原文地址:http://www.cnblogs.com/_ymw/p/4147163.html

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