PhotoActivity.java

package com.ccxt.whl.gushi;

import java.util.ArrayList;
import java.util.List;

import com.ccxt.whl.R;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RelativeLayout;


public class PhotoActivity extends Activity {

	private ArrayList<View> listViews = null;
	private ViewPager pager;
	private MyPageAdapter adapter;

	public static List<Bitmap> bitmap = new ArrayList<Bitmap>();

	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.gushi_activity_photo);

		pager = (ViewPager) findViewById(R.id.viewpager);
		pager.setOnPageChangeListener(pageChangeListener);
		for (int i = 0; i < bitmap.size(); i++) {
			initListViews(bitmap.get(i));//
		}

		adapter = new MyPageAdapter(listViews);// 构造adapter
		pager.setAdapter(adapter);// 设置适配器
		Intent intent = getIntent();
		int id = intent.getIntExtra("ID", 0);
		pager.setCurrentItem(id);
	}

	private void initListViews(Bitmap bm) {
		if (listViews == null)
			listViews = new ArrayList<View>();
		ImageView img = new ImageView(this);// 构造textView对象
		img.setBackgroundColor(0xff000000);
		img.setImageBitmap(bm);
		img.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
				LayoutParams.FILL_PARENT));
		listViews.add(img);// 添加view
	}

	private OnPageChangeListener pageChangeListener = new OnPageChangeListener() {

		public void onPageSelected(int arg0) {// 页面选择响应函数
		// count = arg0;
		}

		public void onPageScrolled(int arg0, float arg1, int arg2) {// 滑动中。。。

		}

		public void onPageScrollStateChanged(int arg0) {// 滑动状态改变

		}
	};

	class MyPageAdapter extends PagerAdapter {

		private ArrayList<View> listViews;// content

		private int size;// 页数

		public MyPageAdapter(ArrayList<View> listViews) {// 构造函数
															// 初始化viewpager的时候给的一个页面
			this.listViews = listViews;
			size = listViews == null ? 0 : listViews.size();
		}

		public void setListViews(ArrayList<View> listViews) {// 自己写的一个方法用来添加数据
			this.listViews = listViews;
			size = listViews == null ? 0 : listViews.size();
		}

		public int getCount() {// 返回数量
			return size;
		}

		public int getItemPosition(Object object) {
			return POSITION_NONE;
		}

		public void destroyItem(View arg0, int arg1, Object arg2) {// 销毁view对象
			((ViewPager) arg0).removeView(listViews.get(arg1 % size));
		}

		public void finishUpdate(View arg0) {
		}

		public Object instantiateItem(View arg0, int arg1) {// 返回view对象
			try {
				((ViewPager) arg0).addView(listViews.get(arg1 % size), 0);

			} catch (Exception e) {
			}
			return listViews.get(arg1 % size);
		}

		public boolean isViewFromObject(View arg0, Object arg1) {
			return arg0 == arg1;
		}

	}
}