Android 仿微信朋友圈查看

项目要做一个类似于这样的功能，就做了。 项目下载地址：http://download.csdn.net/detail/u014608640/9917626

一，看下效果:

二.activity类

public class MainActivity extends Activity {

	/** Item数据实体集合 */
	private ArrayList<ItemEntity> itemEntities;
	/** ListView对象 */
	private ListView listview;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		listview = (ListView) findViewById(R.id.listview);
		initData();
		listview.setAdapter(new ListItemAdapter(this, itemEntities));
	}

	/**
	 * 初始化数据
	 */
	private void initData() {
		itemEntities = new ArrayList<ItemEntity>();
		// 1.无图片
		ItemEntity entity1 = new ItemEntity(//
				"http://img.my.csdn.net/uploads/201410/19/1413698871_3655.jpg", "张三", "今天天气不错...", null);
		itemEntities.add(entity1);
		// 2.1张图片
		ArrayList<String> urls_1 = new ArrayList<String>();
		urls_1.add("http://img.my.csdn.net/uploads/201410/19/1413698883_5877.jpg");
		ItemEntity entity2 = new ItemEntity(//
				"http://img.my.csdn.net/uploads/201410/19/1413698865_3560.jpg", "李四", "今天雾霾呢...", urls_1);
		itemEntities.add(entity2);
		// 3.3张图片
		ArrayList<String> urls_2 = new ArrayList<String>();
		urls_2.add("http://img.my.csdn.net/uploads/201410/19/1413698867_8323.jpg");
		urls_2.add("http://img.my.csdn.net/uploads/201410/19/1413698883_5877.jpg");
		urls_2.add("http://img.my.csdn.net/uploads/201410/19/1413698837_5654.jpg");
		ItemEntity entity3 = new ItemEntity(//
				"http://img.my.csdn.net/uploads/201410/19/1413698837_5654.jpg", "王五", "今天好大的太阳...", urls_2);
		itemEntities.add(entity3);
		// 4.6张图片
		ArrayList<String> urls_3 = new ArrayList<String>();
		urls_3.add("http://img.my.csdn.net/uploads/201410/19/1413698837_7507.jpg");
		urls_3.add("http://img.my.csdn.net/uploads/201410/19/1413698865_3560.jpg");
		urls_3.add("http://img.my.csdn.net/uploads/201410/19/1413698867_8323.jpg");
		urls_3.add("http://img.my.csdn.net/uploads/201410/19/1413698837_5654.jpg");
		urls_3.add("http://img.my.csdn.net/uploads/201410/19/1413698883_5877.jpg");
		urls_3.add("http://img.my.csdn.net/uploads/201410/19/1413698839_2302.jpg");
		ItemEntity entity4 = new ItemEntity(//
				"http://img.my.csdn.net/uploads/201410/19/1413698883_5877.jpg", "赵六", "今天下雨了...", urls_3);
		itemEntities.add(entity4);
	}

三.适配器

public class ListItemAdapter extends BaseAdapter {

	private Context mContext;
	private ArrayList<ItemEntity> items;

	public ListItemAdapter(Context ctx, ArrayList<ItemEntity> items) {
		this.mContext = ctx;
		this.items = items;
	}

	@Override
	public int getCount() {
		return items == null ? 0 : items.size();
	}

	@Override
	public Object getItem(int position) {
		return items.get(position);
	}

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

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHolder holder;
		if (convertView == null) {
			holder = new ViewHolder();
			convertView = View.inflate(mContext, R.layout.item_list, null);
			holder.iv_avatar = (ImageView) convertView.findViewById(R.id.iv_avatar);
			holder.tv_title = (TextView) convertView.findViewById(R.id.tv_title);
			holder.tv_content = (TextView) convertView.findViewById(R.id.tv_content);
			holder.gridview = (NoScrollGridView) convertView.findViewById(R.id.gridview);
			convertView.setTag(holder);
		} else {
			holder = (ViewHolder) convertView.getTag();
		}
		ItemEntity itemEntity = items.get(position);
		holder.tv_title.setText(itemEntity.getTitle());
		holder.tv_content.setText(itemEntity.getContent());
		// 使用ImageLoader加载网络图片
		DisplayImageOptions options = new DisplayImageOptions.Builder()//
				.showImageOnLoading(R.drawable.ic_launcher) // 加载中显示的默认图片
				.showImageOnFail(R.drawable.ic_launcher) // 设置加载失败的默认图片
				.cacheInMemory(true) // 内存缓存
				.cacheOnDisk(true) // sdcard缓存
				.bitmapConfig(Config.RGB_565)// 设置最低配置
				.build();//
		ImageLoader.getInstance().displayImage(itemEntity.getAvatar(), holder.iv_avatar, options);
		final ArrayList<String> imageUrls = itemEntity.getImageUrls();
		if (imageUrls == null || imageUrls.size() == 0) { // 没有图片资源就隐藏GridView
			holder.gridview.setVisibility(View.GONE);
		} else {
			holder.gridview.setAdapter(new NoScrollGridAdapter(mContext, imageUrls));
		}
		// 点击回帖九宫格，查看大图
		holder.gridview.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
				// TODO Auto-generated method stub
				imageBrower(position, imageUrls);
			}
		});
		return convertView;
	}

	/**
	 * 打开图片查看器
	 *
	 * @param position
	 * @param urls2
	 */
	protected void imageBrower(int position, ArrayList<String> urls2) {
		Intent intent = new Intent(mContext, ImagePagerActivity.class);
		// 图片url,为了演示这里使用常量，一般从数据库中或网络中获取
		intent.putExtra(ImagePagerActivity.EXTRA_IMAGE_URLS, urls2);
		intent.putExtra(ImagePagerActivity.EXTRA_IMAGE_INDEX, position);
		mContext.startActivity(intent);
	}

	/**
	 * listview组件复用，防止“卡顿”
	 *
	 * @author Administrator
	 *
	 */
	class ViewHolder {
		private ImageView iv_avatar;
		private TextView tv_title;
		private TextView tv_content;
		private NoScrollGridView gridview;
	}

四:gv适配器

public class NoScrollGridAdapter extends BaseAdapter {

	/** 上下文 */
	private Context ctx;
	/** 图片Url集合 */
	private ArrayList<String> imageUrls;

	public NoScrollGridAdapter(Context ctx, ArrayList<String> urls) {
		this.ctx = ctx;
		this.imageUrls = urls;
	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return imageUrls == null ? 0 : imageUrls.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return imageUrls.get(position);
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		View view = View.inflate(ctx, R.layout.item_gridview, null);
		ImageView imageView = (ImageView) view.findViewById(R.id.iv_image);
		DisplayImageOptions options = new DisplayImageOptions.Builder()//
				.cacheInMemory(true)//
				.cacheOnDisk(true)//
				.bitmapConfig(Config.RGB_565)//
				.build();
		ImageLoader.getInstance().displayImage(imageUrls.get(position), imageView, options);
		return view;
	}

}

五:图片查看器

/**
 * 图片查看器
 */
public class ImagePagerActivity extends FragmentActivity {
	private static final String STATE_POSITION = "STATE_POSITION";
	public static final String EXTRA_IMAGE_INDEX = "image_index";
	public static final String EXTRA_IMAGE_URLS = "image_urls";

	private HackyViewPager mPager;
	private int pagerPosition;
	private TextView indicator;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.image_detail_pager);

		pagerPosition = getIntent().getIntExtra(EXTRA_IMAGE_INDEX, 0);
		ArrayList<String> urls = getIntent().getStringArrayListExtra(EXTRA_IMAGE_URLS);

		mPager = (HackyViewPager) findViewById(R.id.pager);
		ImagePagerAdapter mAdapter = new ImagePagerAdapter(getSupportFragmentManager(), urls);
		mPager.setAdapter(mAdapter);
		indicator = (TextView) findViewById(R.id.indicator);

		CharSequence text = getString(R.string.viewpager_indicator, 1, mPager.getAdapter().getCount());
		indicator.setText(text);
		// 更新下标
		mPager.setOnPageChangeListener(new OnPageChangeListener() {

			@Override
			public void onPageScrollStateChanged(int arg0) {
			}

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

			@Override
			public void onPageSelected(int arg0) {
				CharSequence text = getString(R.string.viewpager_indicator, arg0 + 1, mPager.getAdapter().getCount());
				indicator.setText(text);
			}

		});
		if (savedInstanceState != null) {
			pagerPosition = savedInstanceState.getInt(STATE_POSITION);
		}

		mPager.setCurrentItem(pagerPosition);
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
		outState.putInt(STATE_POSITION, mPager.getCurrentItem());
	}

	private class ImagePagerAdapter extends FragmentStatePagerAdapter {

		public ArrayList<String> fileList;

		public ImagePagerAdapter(FragmentManager fm, ArrayList<String> fileList) {
			super(fm);
			this.fileList = fileList;
		}

		@Override
		public int getCount() {
			return fileList == null ? 0 : fileList.size();
		}

		@Override
		public Fragment getItem(int position) {
			String url = fileList.get(position);
			return ImageDetailFragment.newInstance(url);
		}

	}