Android之画廊点击内容显示

package com.example.Gallery;
 
import com.example.Gallery.R;
 
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
 
public class MainActivity extends Activity {
    /** Called when the activity is first created. */
    private Gallery gallery;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gallery = (Gallery)findViewById(R.id.gallery);
        //设置图片适配器
        gallery.setAdapter(new ImageAdapter(this));      
        //设置监听器
        gallery.setOnItemClickListener(new OnItemClickListener() {
          public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
            Toast.makeText(MainActivity.this, "点击了第"+(arg2+1)+"张图片", Toast.LENGTH_LONG).show();
            }
        });
    }
}
 
class ImageAdapter extends BaseAdapter{
    private Context context;
    //图片源数组
    private Integer[] imageInteger={
            R.drawable.item1,R.drawable.item2,R.drawable.item3,R.drawable.item4,
            R.drawable.item5,R.drawable.item6,R.drawable.item7,R.drawable.item8,
            R.drawable.item9,R.drawable.item10,R.drawable.item11,R.drawable.item12,
            R.drawable.item13,R.drawable.item14,R.drawable.item15};
    public ImageAdapter(Context c){
        context = c;
    }
    @Override
     
    public int getCount() {
        return imageInteger.length;
    }
    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return position;
    }
    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView = new ImageView(context);
        imageView.setImageResource(imageInteger[position]);
        imageView.setBackgroundColor(0xFF000000);
        imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
        imageView.setLayoutParams(new Gallery.LayoutParams(136, 88));
        return imageView;
    }
    }

　　

效果执行图：