最近一直在高仿微信、高仿微信，今天小编再给大家分享一个仿微信发朋友圈浏览图片的效果....

好了，先看一下效果吧： 
 

下面就来说一下具体怎么实现的：

实现思路

1.首先我们要获取数据源，数据源就是我们的每条说说（包括姓名、标题、图片数组） 
2.自定义适配器（ListView嵌套着GridView） 
3.图片点击浏览图片（Fragment+ViewPager）

具体实现

1.初始化数据源，设置适配器，看一下代码：

public class MyActivity extends Activity {
    /*图片显示列表*/
    private ListView listView;    
    /*图片URL数组*/
    private List<ContentBean> contentBeans;    
    /*说说适配器*/
    private MyAdapter adapter;    
    
    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {        
    super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        initData();
        initViews();
    }    
    
    /**
     * 初始化数据
     * by Hankkin at:2015-11-22 23:21:28
     */
    private void initData(){
        contentBeans = new ArrayList<ContentBean>();
        ArrayList<String> imgUrls1 = new ArrayList<String>();
        imgUrls1.add;
        ContentBean cb1 = new ContentBean(1,"java","Sun Microsystems",imgUrls1);
        contentBeans.add(cb1);

        ArrayList<String> imgUrls2 = new ArrayList<String>();
        imgUrls2.add;
        imgUrls2.add;
        imgUrls2.add;
        ContentBean cb2 = new ContentBean(2,"OC","Stepstone",imgUrls2);
        contentBeans.add(cb2);

        ArrayList<String> imgUrls3 = new ArrayList<String>();
        imgUrls3.add;
        imgUrls3.add;
        imgUrls3.add;
        imgUrls3.add;
        imgUrls3.add;
        imgUrls3.add;
        imgUrls3.add;
        imgUrls3.add;
        imgUrls3.add;
        ContentBean cb3 = new ContentBean(3,"python","Guido van Rossum",imgUrls3);
        contentBeans.add(cb3);
    }    
    
    /**
     * 初始化组件
     * by Hankkin at:2015-11-22 23:21:44
     */
    private void initViews(){
        listView = (ListView) findViewById(R.id.lv_my);
        adapter = new MyAdapter(MyActivity.this,contentBeans);
        listView.setAdapter(adapter);
    }
}

这里面的图片是我上传到七牛的网络图片，加载图片是用ImageLoader,下面也有具体的ImageLoader配置。 

2.看一下适配器内容 

在说说列表适配器中去设置图片的适配器，图片的GridView是重写了一个不能滑动的GridView，重写一下OnMeasure();

public class MyAdapter extends BaseAdapter {

    private Context context;    
    private List<ContentBean> data;    
    
    public MyAdapter(Context context, List<ContentBean> data) {        
    this.context = context;        
    this.data = data;
    }    
    
    @Override
    public int getCount() {        
    return data.size();
    }    
    
    @Override
    public Object getItem(int i) {        
    return data.get(i);
    }    
    
    @Override
    public long getItemId(int i) {        
    return i;
    }    
    
    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        ViewHolder holder;        
        if (view == null) {
            holder = new ViewHolder();
            view = View.inflate(context, R.layout.item, null);
            holder.gridView = (NoScrollGridView) view.findViewById(R.id.gridview);
            holder.tvName = (TextView) view.findViewById(R.id.tv_name);
            holder.tvTitle = (TextView) view.findViewById(R.id.tv_title);
            view.setTag(holder);
        } else {
            holder = (ViewHolder) view.getTag();
        }        
        
        final ContentBean bean = data.get(i);

        holder.tvName.setText(bean.getName());
        holder.tvTitle.setText(bean.getTitle());        
        
        if (data != null && data.size() > 0) {
            holder.gridView.setAdapter(new ImageGridAdapter(context, bean.getImgUrls()));
        }        
        /**
         * 图片列表点击事件
         */
        holder.gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {            
        @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                Intent intent = new Intent(context, ImagePagerActivity.class);
                intent.putExtra(ImagePagerActivity.EXTRA_IMAGE_URLS, (Serializable) bean.getImgUrls());
                intent.putExtra(ImagePagerActivity.EXTRA_IMAGE_INDEX, i);
                context.startActivity(intent);
            }
        });        
        
        return view;
    }

    class ViewHolder {
        TextView tvName, tvTitle;
        NoScrollGridView gridView;
    }
}

3.然后就是图片浏览，这个网上也有好多的Demo，也有详细的讲解，直接拽过来用就可以了，下面的图片数量是监听setOnPageChangeListener（）来改变下面

的图片索引值

/**
 * 图片查看器
 * Created by Hankkin on 15/11/22.
 */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);
        }

    }
}

图片Fragment的详细界面，里面有长按点击事件，和图片加载的状态

package com.hankkin.WeiXinLookImgsDemo.activty;

import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.Toast;

import com.hankkin.WeiXinLookImgsDemo.R;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.FailReason;
import com.nostra13.universalimageloader.core.listener.SimpleImageLoadingListener;
import com.others.PhotoViewAttacher;

/**
 * 单张图片显示Fragment
 * Created by Hankkin on 15/11/22.
 */
 
 public class ImageDetailFragment extends Fragment {
    private String mImageUrl;    
    private ImageView mImageView;    
    private ProgressBar progressBar;    
    private PhotoViewAttacher mAttacher;    
    
    public static ImageDetailFragment newInstance(String imageUrl) {        
    final ImageDetailFragment f = new ImageDetailFragment();        
    
    final Bundle args = new Bundle();
        args.putString("url", imageUrl);
        f.setArguments(args);        
        return f;
    }    
    
    @Override
    public void onCreate(Bundle savedInstanceState) {        
    super.onCreate(savedInstanceState);
        mImageUrl = getArguments() != null ? getArguments().getString("url") : null;
    }   
     
     @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        
    final View v = inflater.inflate(R.layout.image_detail_fragment, container, false);
        mImageView = (ImageView) v.findViewById(R.id.image);
        
       mAttacher = new PhotoViewAttacher(mImageView);

        mAttacher.setOnPhotoTapListener(new PhotoViewAttacher.OnPhotoTapListener() {            
        
        @Override
            public void onPhotoTap(View arg0, float arg1, float arg2) {
                getActivity().finish();
            }
        });
        
        mAttacher.setOnLongClickListener(new View.OnLongClickListener() {            
        
        @Override
            public boolean onLongClick(View view) {
                Toast.makeText(getActivity().getApplicationContext(),"保存",Toast.LENGTH_SHORT).show();                
                return false;
            }
        });
        progressBar = (ProgressBar) v.findViewById(R.id.loading);        
        return v;
    }    
    
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {        
    super.onActivityCreated(savedInstanceState);

        ImageLoader.getInstance().displayImage(mImageUrl, mImageView, new SimpleImageLoadingListener() {            
        
        @Override
            public void onLoadingStarted(String imageUri, View view) {
                progressBar.setVisibility(View.VISIBLE);
            }           
             
             @Override
            public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
                String message = null;                
                switch (failReason.getType()) {                
                case IO_ERROR:
                    message = "下载错误";                    
                    break;                
                    case DECODING_ERROR:
                    message = "图片无法显示";                    
                    break;                
                    case NETWORK_DENIED:
                    message = "网络有问题，无法下载";                    
                    break;                
                    case OUT_OF_MEMORY:
                    message = "图片太大无法显示";                    
                    break;                
                    case UNKNOWN:
                    message = "未知的错误";                    
                    break;
                }
                Toast.makeText(getActivity(), message, Toast.LENGTH_SHORT).show();
                progressBar.setVisibility(View.GONE);
            }            
            
            @Override
            public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
                progressBar.setVisibility(View.GONE);
                mAttacher.update();
            }
        });
    }
}

忘了ImageLoader的初始化工作了，给大家加上吧，我写到Application里了

private MyApplication context;    

@Override
    public void onCreate() {        
    super.onCreate();
        context = this;
        initImageLoader(context);
    }    
    
    /**
     * 初始化Imageloader
     * by Hankkin at:2015-11-22 23:20:29
     * @param context
     */
    
    public static void initImageLoader(Context context){
        DisplayImageOptions options = new DisplayImageOptions.Builder()
                .showImageOnLoading(R.drawable.ic_launcher)
                .showImageOnFail(R.drawable.ic_launcher)
                .resetViewBeforeLoading(false)  // default
                .delayBeforeLoading(0)
                .cacheInMemory(true) // default
                .cacheOnDisk(true) // default
                .considerExifParams(true) // default
                .imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2) // default
                .bitmapConfig(Bitmap.Config.ARGB_8888) // default
                .displayer(new SimpleBitmapDisplayer()) // default
                .handler(new Handler()) // default
                .build();
        File picPath = new File(Environment.getExternalStorageDirectory().getPath() + File.separator + "weixinlookimgdemo" + File.separator + "files");

        ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context)
                .memoryCacheExtraOptions(480, 800) // default = device screen dimensions
                .diskCacheExtraOptions(480, 800, null)
                .threadPoolSize(3) // default
                .threadPriority(Thread.NORM_PRIORITY - 1) // default
                .tasksProcessingOrder(QueueProcessingType.FIFO) // default
                .denyCacheImageMultipleSizesInMemory()
                .memoryCache(new LruMemoryCache(2 * 1024 * 1024))
                .memoryCacheSize(2 * 1024 * 1024)
                .memoryCacheSizePercentage(13) // default
                .diskCache(new UnlimitedDiscCache(picPath)) // default
                .diskCacheSize(50 * 1024 * 1024)
                .diskCacheFileCount(1000)
                .diskCacheFileNameGenerator(new HashCodeFileNameGenerator()) // default
                .imageDownloader(new BaseImageDownloader(context)) // default
                .imageDecoder(new BaseImageDecoder(true)) // default
                .defaultDisplayImageOptions(options) // default
                .writeDebugLogs()
                .build();        
                // Initialize ImageLoader with configuration.
        ImageLoader.getInstance().init(config);
    }

这个效果就很容易实现了，揣摩别人的APP很容易，但是我们要试着去实现别人的APP，生命在于折腾，折腾吧，亲们….. 

最后把源码上传到了Github上，宝贝们，star吧