ImageDialog.java

package com.partynetwork.iparty.app.ui;

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

import uk.co.senab.photoview.PhotoView;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.LayoutParams;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ImageView;
import android.widget.TextView;

import com.baidu.mobstat.StatService;
import com.partynetwork.iparty.R;
import com.partynetwork.iparty.app.common.BitmapManager;

/**
 * 
 * com.dongcemedia.iparty.ichoose.IchooseImageDetailsActivity
 * 
 * @author 沈跃双 Create at 2013-11-26 下午4:01:52
 */
public class ImageDialog extends Activity implements OnPageChangeListener,
		OnClickListener {

	public static final String IMAGE_ARRAY = "imageArray";
	public static final String IMAGE_POSITION = "imagePosition";

	private ViewPager viewPager;
	private TextView pagePosition;
	private ImageView backBtn;
	/**
	 * 当前ishare的所有图片数组
	 */
	private List<String> photoList = new ArrayList<String>();
	/**
	 * 当前显示第几张图片
	 */
	private int photoPosition;
	private BitmapManager bitmapManager;

	/**
	 * 
	 * 覆盖方法
	 * 
	 * @see android.app.Activity#onCreate(android.os.Bundle)
	 */
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		// 设置窗体无标题 全屏
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.image_dialog);
		initView();
		initData();
	}

	private void initView() {
		Resources resource = this.getResources();
		String pkgName = this.getPackageName();
		viewPager = (ViewPager) findViewById(resource.getIdentifier(
				"view_pager", "id", pkgName));
		pagePosition = (TextView) findViewById(resource.getIdentifier(
				"page_tv", "id", pkgName));
		pagePosition.setVisibility(View.GONE);
		backBtn = (ImageView) findViewById(resource.getIdentifier("back_iv",
				"id", pkgName));
		backBtn.setOnClickListener(this);
	}

	/**
	 * 初始化数据
	 */
	private void initData() {
		bitmapManager = new BitmapManager();
		Intent intent = getIntent();
		// 获取图片数组
		photoList = intent.getStringArrayListExtra(IMAGE_ARRAY);
		photoPosition = intent.getIntExtra(IMAGE_POSITION, 0);
		viewPager.setAdapter(new SamplePagerAdapter());
		viewPager.setCurrentItem(photoPosition);
		viewPager.setOnPageChangeListener(this);
		viewPager.setEnabled(false);
		// 设定当前的页数和总页数
		onPageSelected(photoPosition);
	}

	/**
	 * 按钮监听事件
	 * 
	 * @param view
	 */
	public void onClick(View view) {
		switch (view.getId()) {
		case R.id.back_iv:
			// 返回按钮
			finish();
			break;
		default:
			break;
		}
	}

	public void onPageScrollStateChanged(int arg0) {

	}

	public void onPageScrolled(int arg0, float arg1, int arg2) {

	}

	/**
	 * 照片切换的选中效果 覆盖方法
	 * 
	 * @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageSelected(int)
	 */
	public void onPageSelected(int currentPage) {
		// 每当页数发生改变时重新设定一遍当前的页数和总页数
		pagePosition.setText("第" + (currentPage + 1) + "张(共" + photoList.size()
				+ "张)");
	}

	class SamplePagerAdapter extends PagerAdapter {

		public SamplePagerAdapter() {
		}

		@Override
		public int getCount() {
			return photoList.size();
		}

		@Override
		public View instantiateItem(ViewGroup container, int position) {
			PhotoView photoView = new PhotoView(container.getContext());
			String url = photoList.get(position);
			bitmapManager.loadBitmap(url, photoView);
			// Now just add PhotoView to ViewPager and return it
			container.addView(photoView, LayoutParams.MATCH_PARENT,
					LayoutParams.MATCH_PARENT);

			return photoView;
		}

		@Override
		public void destroyItem(ViewGroup container, int position, Object object) {
			container.removeView((View) object);
		}

		@Override
		public boolean isViewFromObject(View view, Object object) {
			return view == object;
		}

	}

	@Override
	protected void onResume() {
		StatService.onResume(this);
		super.onResume();
	}

	@Override
	protected void onPause() {
		StatService.onPause(this);
		super.onPause();
	}

}