Android使用Gridview单行横向滚动显示

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>

 
 

package com.example.scrollgridview;

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

public class MainActivity extends Activity {

 private GridView gridview;
 private int imgs[]={R.drawable.remote_tv_0,
   R.drawable.remote_tv_1,R.drawable.remote_tv_2,
   R.drawable.remote_tv_3,R.drawable.remote_tv_4,
   R.drawable.remote_tv_5,R.drawable.remote_tv_6,
   R.drawable.remote_tv_7,R.drawable.remote_tv_8,
   R.drawable.remote_tv_9};
 private GridviewAdapter adapter;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  gridview = (GridView)findViewById(R.id.test_gridview);
  adapter = new GridviewAdapter();

  DisplayMetrics dm = new DisplayMetrics();
  getWindowManager().getDefaultDisplay().getMetrics(dm);
  float density = dm.density;
  int size = imgs.length;//要显示数据的个数
  //gridview的layout_widht,要比每个item的宽度多出2个像素，解决不能完全显示item的问题
  int allWidth = (int) (82 * size * density);
  //int allWidth = (int) ((width / 3 ) * size + (size-1)*3);//也可以这样使用，item的总的width加上horizontalspacing
  int itemWidth = (int) (80 * density);//每个item宽度
  LinearLayout.LayoutParams params = new   
  LinearLayout.LayoutParams(allWidth,LinearLayout.LayoutParams.MATCH_PARENT);
  gridview.setLayoutParams(params);
  gridview.setColumnWidth(itemWidth);
  gridview.setHorizontalSpacing(3);
  gridview.setStretchMode(GridView.NO_STRETCH);
  gridview.setNumColumns(size);

  gridview.setAdapter(adapter);
  adapter.setindex(0);
  adapter.notifyDataSetChanged();

  gridview.setOnItemClickListener(new OnItemClickListener() {

   @Override
   public void onItemClick(AdapterView<&＃63;> parent, View view,
     int position, long id) {
    // TODO Auto-generated method stub
    adapter.setindex(position);
    adapter.notifyDataSetChanged();
   }
  });
 }

 class GridviewAdapter extends BaseAdapter{
  private int index = 0;
  @Override
  public int getCount() {
   // TODO Auto-generated method stub
   return imgs.length;
  }

  @Override
  public Object getItem(int position) {
   // TODO Auto-generated method stub
   return imgs[position];
  }

  @Override
  public long getItemId(int position) {
   // TODO Auto-generated method stub
   return position;
  }

  public void setindex(int index){
   this.index = index;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
   // TODO Auto-generated method stub
   LayoutInflater mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
   ViewHolder viewHolder;
   if (cOnvertView== null) {
    cOnvertView= mInflater.inflate(R.layout.gridview_itme, null);
    viewHolder = new ViewHolder();
    viewHolder.img = (ImageView)convertView.findViewById(R.id.item_img);
    viewHolder.text = (TextView)convertView.findViewById(R.id.item_text);
    convertView.setTag(viewHolder);
   }else{
    viewHolder = (ViewHolder)convertView.getTag();
   }
   if(this.index == position){
    convertView.setBackgroundResource(R.drawable.list_item_bg_focus);
   }
   else{
    convertView.setBackgroundResource(R.drawable.list_item_bg);
   }
   viewHolder.img.setImageResource(imgs[position]);
   viewHolder.text.setText(position+"");
   return convertView;
  }

  class ViewHolder{
   ImageView img;
   TextView text;
  }
 }

}