androdi 之GridVeiw 使用

来源：互联网发布：知乎酒店惊魂编辑：程序博客网时间：2024/05/22 02:11

定义主Activity

package com.gird;

import java.util.ArrayList;
import java.util.HashMap;

import com.gird.GridAdapter.ViewHolder;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class main extends Activity {

GridView gridview;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  gridview =(GridView)this.findViewById(R.id.gridView1);
  ArrayList<HashMap<String, Object>> list=iniRes();
  /*this上下文
   * 要显示的数据
   * 定义的布局
   * ArrayList<HashMap<String 中的keys 一一对应布局中的id
   *
   */
//  SimpleAdapter adapter=new SimpleAdapter(this, list, R.layout.grid_item,
//    new String[]{"image","text"}, new int[]{R.id.ItemImage,R.id.ItemText});
  GridAdapter adapter =new GridAdapter(this);
  gridview.setAdapter(adapter);
  gridview.setOnItemClickListener(new MyOnItemClickListener());

}
private ArrayList<HashMap<String, Object>> iniRes()
{
  ArrayList<HashMap<String, Object>> list=new ArrayList<HashMap<String,Object>>();
  for(int i=0;i<13;i++)
  {
   HashMap< String, Object> map=new HashMap<String, Object>();
   if(i==0)
   {
    map.put("image", R.drawable.g11);
    map.put("text", this.getResources().getString(R.string.gridview1));
   }
   else if(i==1)
   {
    map.put("image", R.drawable.g12);
    map.put("text", this.getResources().getString(R.string.gridview2));
   }
   else if(i==2)
   {
    map.put("image", R.drawable.g13);
    map.put("text", this.getResources().getString(R.string.gridview3));
   }
   else if(i==3)
   {
    map.put("image", R.drawable.g14);
    map.put("text", this.getResources().getString(R.string.gridview4));
   }
   else if(i==4)
   {
    map.put("image", R.drawable.g15);
    map.put("text", this.getResources().getString(R.string.gridview5));
   }
   else if(i==5)
   {
    map.put("image", R.drawable.g16);
    map.put("text", this.getResources().getString(R.string.gridview6));
   }
   else if(i==6)
   {
    map.put("image", R.drawable.g17);
    map.put("text", this.getResources().getString(R.string.gridview7));
   }
   else if(i==7)
   {
    map.put("image", R.drawable.g18);
    map.put("text", this.getResources().getString(R.string.gridview8));
   }
   else if(i==8)
   {
    map.put("image", R.drawable.g19);
    map.put("text", this.getResources().getString(R.string.gridview9));
   }
   else if(i==9)
   {
    map.put("image", R.drawable.btn_check_off_selected);
    map.put("text", "九宫格10");
   }
   else if(i==10)
   {
    map.put("image", R.drawable.btn_check_on_pressed);
    map.put("text", "九宫格11");
   }
   else if(i==11)
   {
    map.put("image", R.drawable.btn_circle_pressed);
    map.put("text", "九宫格12");
   }
   else if(i==12)
   {
    map.put("image", R.drawable.btn_close_pressed);
    map.put("text", "九宫格13");
   }
   list.add(map);
  }
  return list;
}

class MyOnItemClickListener implements OnItemClickListener
{

  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position,
    long id) {
            Log.i("JNIMsg", "position:"+position+" id "+id);
            //SimpleAdapter 系统适配器
//   HashMap<String, Object> item=(HashMap<String, Object>) parent.getItemAtPosition(position);
//   if(item.get("text").equals(main.this.getResources().getString(R.string.gridview1)))
//   {
//    Toast.makeText(main.this, getResources().getString(R.string.gridview1), 0).show();
//   }
          //GridAdapter 自己定义适配器
            ViewHolder vHollder = (ViewHolder)view.getTag(); //得到自定义Layout
            if(vHollder.txtview.getText().toString().equals(main.this.getResources().getString(R.string.gridview1)))
            {
            Toast.makeText(main.this, getResources().getString(R.string.gridview1), 0).show();
            }
  }

}

自己定的适配器,

package com.gird;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class GridAdapter extends BaseAdapter {
LayoutInflater Layout;
Context context;
int imgIDS[];
String strIDS[];
public GridAdapter(Context context) {
  Layout= LayoutInflater.from(context);    //得到布局
  this.context=context;
  strIDS=new String[]{context.getResources().getString(R.string.gridview1),context.getResources().getString(R.string.gridview2),context.getResources().getString(R.string.gridview3)};
  imgIDS=new int[]{R.drawable.g11,R.drawable.g12,R.drawable.g13,R.drawable.g14,R.drawable.g15,R.drawable.g16,R.drawable.g17
    ,R.drawable.g18,R.drawable.g19};
}
@Override
public int getCount() {
  // TODO Auto-generated method stub
  return strIDS.length;
}

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

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
  // TODO Auto-generated method stub
  ViewHolder viewHolder;
  if(convertView==null)
  {//绑定组件
   viewHolder = new ViewHolder();
   View V=Layout.inflate(R.layout.grid_item, null);   //引用自定义布局
   viewHolder.imageView=(ImageView)V.findViewById(R.id.ItemImage);
   viewHolder.txtview=(TextView)V.findViewById(R.id.ItemText);
   V.setTag(viewHolder);
   convertView = V;
  }
  else
  {
   viewHolder = (ViewHolder)convertView.getTag();//得到绑定组件
  }
  if(position<imgIDS.length)
  {
   viewHolder.imageView.setImageResource(imgIDS[position]);
   viewHolder.txtview.setText(strIDS[position]);
  }
  return convertView;
}
class ViewHolder
{
  ImageView imageView;
  TextView txtview;
}
}

GridView布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="90dp"
android:layout_height="wrap_content"
>
   <ImageView
               android:layout_height="wrap_content"
               android:id="@+id/ItemImage"
               android:layout_width="wrap_content"
               android:layout_centerHorizontal="true">
         </ImageView>
         <TextView
               android:layout_width="wrap_content"
               android:layout_below="@+id/ItemImage"
               android:layout_height="wrap_content"
               android:text="TextView01"
               android:layout_centerHorizontal="true"
               android:id="@+id/ItemText">
         </TextView>

</RelativeLayout>

主要布局

<?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="@drawable/bg">