Android Open Source - WebViewImageSaveSample Web View Fragment

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Back to project page WebViewImageSaveSample.

License

The source code is released under:

CC0 1.0 Universal Statement of Purpose The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent...

Java Source Code

package org.kuropen.webviewimagesavesample;
// w w w . j a v a2  s .  co m
import java.io.File;
import java.net.URL;
import android.annotation.SuppressLint;
import android.app.DownloadManager;
import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebView.HitTestResult;
import android.widget.Toast;

/**
 * WebView??????????Fragment
 */
public class WebViewFragment extends Fragment implements OnLongClickListener {

  private WebView mWebView;

  @SuppressLint("SetJavaScriptEnabled") @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_main, container,
        false);

    mWebView = (WebView) rootView.findViewById(R.id.mainWebView);
    
    WebSettings w = mWebView.getSettings();
    w.setJavaScriptEnabled(true);
    w.setLoadsImagesAutomatically(true);
    w.setUseWideViewPort(true);
    w.setJavaScriptCanOpenWindowsAutomatically(true);

    w.setSaveFormData(true);
    w.setLoadWithOverviewMode(true);
    // w.setPageCacheCapacity();

    // WebView inside Browser doesn't want initial focus to be set.
    w.setNeedInitialFocus(false);
    // Browser does not support multiple windows
    w.setSupportMultipleWindows(false);

    // HTML5 API flags
    w.setAppCacheEnabled(true);
    w.setDatabaseEnabled(true);
    w.setDomStorageEnabled(true);
    w.setGeolocationEnabled(true);

    // HTML5 configuration parameters.
    w.setAppCacheEnabled(true);
    w.setDatabaseEnabled(true);
    w.setDomStorageEnabled(true);
    w.setGeolocationEnabled(true);

    w.setCacheMode(WebSettings.LOAD_DEFAULT);

    // ?????????????
    mWebView.setVerticalScrollbarOverlay(true);
    mWebView.setHorizontalScrollBarEnabled(false);
    
    mWebView.setOnLongClickListener(this);

    mWebView.loadUrl("http://divnil.com/wallpaper/iphone6plus/");
    
    return rootView;
  }

  @Override
  public boolean onLongClick(View v) {
    WebView webView = (WebView) v;
    HitTestResult hr = webView.getHitTestResult();
    
    //??????????????????????????
    int type = hr.getType();
    if (type == HitTestResult.IMAGE_TYPE || type == HitTestResult.SRC_IMAGE_ANCHOR_TYPE) {
      //?????????????????Extra?????????????????URL???????
      String imageUrl = hr.getExtra();
      
      // http??????????????URL????????????????????????????????????????
      if (!imageUrl.startsWith("http")) {
        return false;
      }
      
      // ???????????????????????????????????????????????????????????????
      
      // ??????????
      File file = new File(getActivity().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS), getFilenameFromURL(imageUrl));
      
      DownloadManager downloadManager = (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE);
      DownloadManager.Request request = new DownloadManager.Request(Uri.parse(imageUrl));
      request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI);
      request.setDestinationUri(Uri.fromFile(file));
      request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
      downloadManager.enqueue(request);
      
      Toast.makeText(getActivity(), "??????????????????", Toast.LENGTH_LONG).show();
      return true;
    }
    
    return false;
  }
  
  protected String getFilenameFromURL(URL url) {
    return getFilenameFromURL(url.getFile());
  }
  
  protected String getFilenameFromURL(String url) {
    String[] p = url.split("/");
    String s = p[p.length - 1];
    if (s.indexOf("?") > -1) {
      return s.substring(0, s.indexOf("?"));
    }
    return s;
  }

}

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