gridview

http://mobile.51cto.com/android-259861.htm

实现第一点好办，添加一个标志位boolean bl来控制按钮的Enable状态，实现第二点就是将View.onClickListener添加到List列表中

1、MyAdapter.java继承自BaseAdapter

public class MyAdapter extends BaseAdapter{
        private Context context;
    private List<Map<String,Object>> list;
    private LayoutInflater mInflater;
    public MyAdapter(Context context,List<Map<String,Object>> list){
        this.context=context;
        this.list=list;
        mInflater=LayoutInflater.from(this.context);
    }
    public int getCount() {
        // TODO Auto-generated method stub
        if(list!=null)
            return list.size();
        else
            return 0;
    }
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        if(list!=null)
            return list.get(position);
        else
            return null;
    }
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }
    @SuppressWarnings("unused")
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub        ViewHolder holder=null;
        if(holder==null){
            holder=new ViewHolder();
            convertView=mInflater.inflate(R.layout.gridview_item, null);
            holder.ib=(ImageButton)convertView.findViewById(R.id.ib);
            convertView.setTag(holder);
        }else{
            holder=(ViewHolder)convertView.getTag();
        }
        //绑定点击事件
        holder.ib.setOnClickListener((OnClickListener) list.get(position).get("listen"));
        //通过标志位控制按钮的Enable
        if(Boolean.parseBoolean(list.get(position).get("bl").toString()))
            holder.ib.setEnabled(true);
        else
            holder.ib.setEnabled(false);
        holder.ib.setImageResource(Integer.parseInt(list.get(position).get("icon").toString()));
       return convertView;
    }
    public final class ViewHolder{
        public ImageButton ib;
    }
}

2、绑定数据源

public class Main extends Activity {
    /** Called when the activity is first created. */
    private GridView gvtest;
    private List<Map<String,Object>> list;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
                findView();
    }
        /*
     * 定义一个标志位bl控制按钮的Enable,同时为了让每个按钮都绑定自有的点击事件提前在数据源中间各自的事件实现
     */
    private void findView(){
        gvtest=(GridView)findViewById(R.id.gvtest);
        list=new ArrayList<Map<String,Object>>();
        Map<String,Object> map;
        map=new HashMap<String,Object>();
        map.put("bl", true);
        map.put("icon", R.drawable.menu_home_dis);
        View.OnClickListener abenClick=new View.OnClickListener() {
                        public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(Main.this, "You click home menu", Toast.LENGTH_SHORT).show();
            }
        };
        map.put("listen", abenClick);
        list.add(map);
        map=new HashMap<String,Object>();
        map.put("bl", true);
        map.put("icon", R.drawable.menu_backward_dis);
        View.OnClickListener beanClick=new View.OnClickListener() {
                        public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(Main.this, "You click back menu", Toast.LENGTH_SHORT).show();
            }
        };
        map.put("listen", beanClick);
        list.add(map);
        map=new HashMap<String,Object>();
        map.put("bl", false);
        map.put("icon", R.drawable.menu_forward_dis);
        View.OnClickListener weiboClick=new View.OnClickListener() {
                        public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(Main.this, "You click forward menu", Toast.LENGTH_SHORT).show();
            }
        };
        map.put("listen", weiboClick);
        list.add(map);
                MyAdapter adapter=new MyAdapter(this, list);
        gvtest.setAdapter(adapter);
    }
}

3、gridview_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:orientation="vertical"
 android:gravity="center">
      <ImageButton android:id="@+id/ib"
         android:layout_width="60dip"
 android:layout_height="60dip">
</ImageButton>
</LinearLayout>

4、Main.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="fill_parent"
    >
<GridView android:id="@+id/gvtest"
     android:layout_width="fill_parent"
 android:layout_height="wrap_content"
    android:numColumns="3"
 android:stretchMode="columnWidth"
    android:gravity="center"
 android:layout_gravity="center_horizontal">
</GridView>
</LinearLayout>