public class MainActivity extends Activity {
 private WebView webview;
 private WebSettings wv;
 private ArrayList listimg;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 webview = (WebView)findViewById(R.id.webview);
 listimg = new ArrayList<>();
  wv = webview.getSettings();
  wv.setJavaScriptEnabled(true);
  webview.addJavascriptInterface(new JavascriptInterface(this), "imagelistner");//綁定javasrcipt接口，imagelistner為接口的別名
  webview.loadUrl("http://portal.smu.edu.cn/e/action/ShowInfo2.php?classid=1415&id=63663&tlpid=98");
  webview.setWebViewClient(new WebViewClient(){
  public boolean shouldOverrideUrlLoading(WebView view, String url)
  {
   //點擊webView中的鍵接，依然在此webview中顯示，而不跳轉(zhuǎn)到別的瀏覽器
   webview.loadUrl(url);
   return super.shouldOverrideUrlLoading(view, url);
  }

 @Override
 public void onPageFinished(WebView view, String url) {
  super.onPageFinished(view, url);
  addImageListner();  //當(dāng)頁面加載完成，就調(diào)用我們的addImageListener()函數(shù)
  }
 @Override
 public void onPageStarted(WebView view, String url, Bitmap favicon) {
  super.onPageStarted(view, url, favicon);
  }
 });
 }
 private void addImageListner() {

 //遍歷頁面中所有img的節(jié)點，因為節(jié)點里面的圖片的url即objs[i].src，保存所有圖片的src.
 //為每個圖片設(shè)置點擊事件，objs[i].onclick
 webview.loadUrl("javascript:(function(){" + 
 "var objs = document.getElementsByTagName(\"img\"); " + 
 "for(var i=0;i中
  listimg.add(img);
 }
 @android.webkit.JavascriptInterface //對于targetSdkVersion>=17的，要加這個聲明
 public void openImage(String clickimg)//點擊圖片所調(diào)用到的函數(shù)
 {
 int index = 0;
 for(String url:listimg)
 if(url.equals(clickimg)) index = listimg.indexOf(clickimg);//獲取點擊圖片在整個頁面圖片中的位置
 Intent intent = new Intent();
 Bundle bundle = new Bundle();
 bundle.putStringArrayList("list_image",listimg);
 bundle.putInt("index", index);
 intent.putExtra("bundle", bundle);//將所有圖片的url以及點擊圖片的位置作為參數(shù)傳給啟動的activity
 intent.setClass(context, ViewPagerActivity.class);
 context.startActivity(intent);//啟動ViewPagerActivity,用于顯示圖片
 }
 }
}

public class ViewPagerActivity extends Activity {
 private ViewPager mViewPager;
 private View rootView;
 private PhotoView image;
 private TextView indicator;
 private Bundle bundle;
 ArrayList listimg;
 private int index;
 private int count;

 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_view_pager);
 mViewPager = (HackyViewPager) findViewById(R.id.view_pager);
 setContentView(mViewPager);
 bundle = getIntent().getBundleExtra("bundle");
 listimg = bundle.getStringArrayList("list_image");
 index = bundle.getInt("index");
 count = listimg.size();
 mViewPager.setAdapter(new SamplePagerAdapter());
 mViewPager.setCurrentItem(index);
 }

 class SamplePagerAdapter extends PagerAdapter {
 @Override
 public int getCount() {
  return count;
 }
 @Override
 //此處用到PhotoView、ImageLoader均為第三方類庫的類
 public View instantiateItem(ViewGroup container, int position) {
  rootView = View.inflate(ViewPagerActivity.this, R.layout.viewpager_item, null);
  image = (PhotoView) rootView.findViewById(R.id.photoview);
  indicator = (TextView) rootView.findViewById(R.id.indicator);
  ImageLoader imageloader=ImageLoader.getInstance();
  imageloader.init(ImageLoaderConfiguration.createDefault(ViewPagerActivity.this));
  imageloader.displayImage(listimg.get(position), image);
  CharSequence text = getString(R.string.viewpager_indicator, position+1, count);
  indicator.setText(text);
  container.addView(rootView, LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
  return rootView;
 }
 @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;
 }
 }
}

public class HackyViewPager extends ViewPager {
 private boolean isLocked;
 public HackyViewPager(Context context) {
 super(context);
 isLocked = false;
 }
 public HackyViewPager(Context context, AttributeSet attrs) {
 super(context, attrs);
 isLocked = false;
 }
 @Override
 public boolean onInterceptTouchEvent(MotionEvent ev) {//用于處理Touch事件
 if (!isLocked) {
  try {
  return super.onInterceptTouchEvent(ev);
  } catch (IllegalArgumentException e) {
  e.printStackTrace();
  return false;
  }
 }
 return false;
 }
 @Override
 public boolean onTouchEvent(MotionEvent event) {
 return !isLocked && super.onTouchEvent(event);
 }
}

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