Android开发仿微信发朋友圈浏览图片效果实例代码

先看一下效果吧：

public class MyActivity extends Activity {  /*图片显示列表*/  private ListView listView;  /*图片URL数组*/  private List 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   */  private void initData(){    contentBeans = new ArrayList();    ArrayList imgUrls1 = new ArrayList();    imgUrls1.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    ContentBean cb1 = new ContentBean(1,"java","Sun Microsystems",imgUrls1);    contentBeans.add(cb1);    ArrayList imgUrls2 = new ArrayList();    imgUrls2.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls2.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls2.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    ContentBean cb2 = new ContentBean(2,"OC","Stepstone",imgUrls2);    contentBeans.add(cb2);    ArrayList imgUrls3 = new ArrayList();    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    imgUrls3.add("http://7xojuc.com1.z0.glb.clouddn.com/110H2E40-6.jpg?attname=&e=1448288962&token=KDsCqUAWz3P-YT6In6oPnT56Eh2cig4zgQd12SJ_:AlTjfYD9SBFOdB4jmmZuKXAMOp8");    ContentBean cb3 = new ContentBean(3,"python","Guido van Rossum",imgUrls3);    contentBeans.add(cb3);  }  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 data;  public MyAdapter(Context context, List 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 */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 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 fileList;    public ImagePagerAdapter(FragmentManager fm, ArrayList 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 */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);  }

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