Android之Gallery使用例子

package com.example.galleryex02;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageView;public class MainActivity extends Activity {  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    setTitle("电影海报");    Gallery gallery = (Gallery) findViewById(R.id.gallery1);    MyGalleryAdapter galAdapter = new MyGalleryAdapter(this);    gallery.setAdapter(galAdapter);  }  public class MyGalleryAdapter extends BaseAdapter {     Context context;    Integer[] posterID = { R.drawable.mov11, R.drawable.mov12,        R.drawable.mov13, R.drawable.mov14, R.drawable.mov15,        R.drawable.mov16, R.drawable.mov17, R.drawable.mov18,        R.drawable.mov19, R.drawable.mov20 };    public MyGalleryAdapter(Context c) {      context = c;    }    public int getCount() {      // TODO Auto-generated method stub      return posterID.length;    }    public Object getItem(int arg0) {      // TODO Auto-generated method stub      return null;    }    public long getItemId(int position) {      // TODO Auto-generated method stub      return 0;    }    public View getView(int position, View convertView, ViewGroup parent) {      ImageView imageview = new ImageView(context);      imageview.setLayoutParams(new Gallery.LayoutParams(100, 150));       //设置image大小      imageview.setScaleType(ImageView.ScaleType.FIT_CENTER);       imageview.setPadding(5, 5, 5, 5);      imageview.setImageResource(posterID[position]);      final int pos = position;      //点击galley的image的时候      imageview.setOnTouchListener(new View.OnTouchListener() {        public boolean onTouch(View v, MotionEvent event) {          ImageView ivPoster = (ImageView) findViewById(R.id.ivPoster);          ivPoster.setScaleType(ImageView.ScaleType.FIT_CENTER);          ivPoster.setImageResource(posterID[pos]);          return false;        }      });      return imageview;    }  }}