Android GridView 横向滚动一行显示

Android GridView 横向滚动一行显示  

2012-06-07 21:58:36|  分类： Android |字号 订阅

都知道gridview和listview是android比较重要的数据组件，

接到一个横向显示数据的任务，头大半天，最后只能用gridview试试了。呵呵，费了N多脑细胞，搞定。

下面有源码下载

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布局文件main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:background="#FFFFFF"
 android:gravity="center">
 <TextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="向右滑动"
  android:textColor="#000000"
  android:textSize="20dip"/>
 <HorizontalScrollView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:background="#CCCCCC">
  <LinearLayout
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
    android:orientation="horizontal">
   <GridView
    android:id="@+id/gridView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />
  </LinearLayout>
 </HorizontalScrollView>
</LinearLayout>

类文件MainActivity.java

package com.test;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout.LayoutParams;
public class MainActivity extends Activity {
 private GridView gridView;
 private List<Item> itemList;
 private MyListAdapter adapter;
 private ItemClickEvent listener;
 private MyHandler handler;
 
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
  setContentView(R.layout.main);
  gridView = (GridView) findViewById(R.id.gridView);
  handler = new MyHandler();
  new Thread() {
   public void run() {
    itemList = new ArrayList<Item>();
    for(int i=0;i<10;i++){
     Item item = new Item("北极熊生存如履薄冰" + i,"如果我们从现在开始就采取措施降低气温" + i);
     itemList.add(item);
    }
    Message msg = Message.obtain();
    msg.what = 1;
    handler.sendMessage(msg);
   }
  }.start();
 }
 
 private class MyHandler extends Handler{
  public void handleMessage(Message msg) {
   switch (msg.what) {
   case 1:
    if ((itemList == null) || (itemList.size() == 0)) {
     return;
    } else {
     LayoutParams params = new LayoutParams(itemList.size() * (420 + 6), LayoutParams.WRAP_CONTENT);
     gridView.setLayoutParams(params);
     gridView.setColumnWidth(420);
     gridView.setHorizontalSpacing(6);
     gridView.setStretchMode(GridView.NO_STRETCH);
     gridView.setNumColumns(itemList.size());
     
     adapter = new MyListAdapter(MainActivity.this);
     listener = new ItemClickEvent();
     gridView.setAdapter(adapter);
     gridView.setOnItemClickListener(listener);
    }
    break;
   }
  }
 }
 
 private class MyListAdapter extends BaseAdapter {
  private final String TAG = "MyListAdapter";
  private LayoutInflater mInflater;
  private final Context context;
  public MyListAdapter(Context context) {
   this.context = context;
   mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  }
  public int getCount() {
   return itemList.size();
  }
  public Object getItem(int position) {
   return itemList.get(position);
  }
  public long getItemId(int position) {
   return position;
  }
  public View getView(int position, View convertView, ViewGroup parent) {
   Item item = itemList.get(position);
   CellHolder cellHolder;
   if (convertView == null) {
    cellHolder = new CellHolder();
    convertView = mInflater.inflate(R.layout.item, null);
    cellHolder.ivIcon = (ImageView) convertView.findViewById(R.id.ivIcon);
    cellHolder.tvTitle = (TextView) convertView.findViewById(R.id.tvTitle);
    cellHolder.tvContent = (TextView) convertView.findViewById(R.id.tvContent);
    convertView.setTag(cellHolder);
   }else{
    cellHolder = (CellHolder) convertView.getTag();
   }
   cellHolder.ivIcon.setImageResource(R.drawable.bear);
   cellHolder.tvTitle.setText(item.getTitle());
   cellHolder.tvContent.setText(item.getContent());
   return convertView;
  }
 }
 
 private class CellHolder{
  ImageView ivIcon;
  TextView tvTitle;
  TextView tvContent;
 }
 
 private class ItemClickEvent implements OnItemClickListener{
  public void onItemClick(AdapterView<?> parent, View view, int position,
    long id) {
   
  }
  
 }
}

Item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android=" http://schemas.android.com/apk/res/android"
 android:orientation="horizontal"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:padding="10dip"
 android:background="#FFFFFF">
 <ImageView
  android:id="@+id/ivIcon"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:src="@drawable/icon"
  android:layout_marginRight="10dip"/>
 <LinearLayout
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  >
  <TextView
   android:id="@+id/tvTitle"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="标题标题标题标题标题"
   android:textColor="#000000"
   android:textSize="20dip"
   android:textStyle="bold"/> 
  <TextView
   android:id="@+id/tvContent"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="内容内容内容内容内容内容内容"
   android:textColor="#000000"/> 
 </LinearLayout> 
</LinearLayout>

源码下载 http://dl.vmall.com/c02ba4uulz

转载于:https://my.oschina.net/janson2013/blog/145434