DataAdapter.java

package com.android.pc.ioc.a.demo;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import android.widget.Toast;

import com.wash.activity.R;

public class DataAdapter extends BaseAdapter {
	Context mContext;
	int count = 0;

	public DataAdapter(Context context) {
		mContext = context;
	}

	@Override
	public int getCount() {
		return count;
	}

	public void setCount(){
		count = 20;
	}
	
	@Override
	public Object getItem(int position) {
		return position;
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		if (convertView == null) {
			convertView = View.inflate(mContext, R.layout.grid_item, null);
		}
		
		System.out.println("刷新与否:"+position);
		
		TextView tv=(TextView)convertView.findViewById(R.id.tv);
		tv.setText("text"+position);
		tv.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Toast.makeText(mContext, ((TextView)v).getText(), Toast.LENGTH_SHORT).show();
			}
		});
		return convertView;
	}
	
	@Override
	public void notifyDataSetChanged() {
	    super.notifyDataSetChanged();
	    System.out.println("刷新");
	}
}