Android WebView Long Press to identify the image, using zxing to identify whether the image is a two-dimensional code

The main implementation of the Webwiew Onlongclick () method, using

Hittestresult htr = Gethittestresult (); // get the clicked content

Judging whether the click is a picture, its main code is:

    
 @Overridepublic boolean Onlongclick (View v) {//Long press Event Listener (Note: You need to implement the Longclickcallback interface and pass in the object) final Hittestresult htr = Gethittestresult ();//Gets the clicked content if (htr.gettype () = = hittestresult.image_type| | htr.gettype () = = hittestresult.image_anchor_type| | Htr.gettype () = = Hittestresult.src_image_anchor_type) {//Determine the type of the hit as Picture if (Mcallback!=null) { Mcallback.onlongclickcallback (Htr.getextra ());}} return false;} 
 If you decide it is a picture, you can use zxing to identify whether it is a two-dimensional code image: 

  @Override public    void Onlongclickcallback (final String imgurl) {        imgurl=imgurl;        Get to the picture address and do the appropriate processing for the        new Thread () {public            void run () {                decodeimage (imgurl);                Handler.sendemptymessage (0);}            ;        }. Start ();        ShowDialog ();    }

  First we convert the link address of the image to a picture:   

    
/** * Base address get network picture * @param surl Image Address * @return * @throws IOException */Public            Static Bitmap Getbitmap (String surl) {try {URL url = new URL (surl);            HttpURLConnection conn = (httpurlconnection) url.openconnection ();            Conn.setconnecttimeout (5000);            Conn.setrequestmethod ("GET");                if (conn.getresponsecode () = =) {InputStream InputStream = Conn.getinputstream ();                Bitmap Bitmap = Bitmapfactory.decodestream (InputStream);            return bitmap;        }} catch (Exception e) {e.printstacktrace ();    } return null; 
 after the link has been transferred out of the picture in the recognition image is a two-dimensional code map: 

    
/** * determine if the QR code * @param surl Image Address * @return */Private Boolean decodeimage (Str        ing surl) {result = Decodeimage.handleqrcodeformbitmap (Getbitmap (sURL));        if (result = = null) {ISQR = false;        }else {ISQR = true;    } return ISQR; 
 
 If a picture of a two-dimensional code is sent handle to update adapter to display the QR code in the identification chart 

@SuppressLint ("Handlerleak")    private Handler Handler = new Handler () {public        void Handlemessage (Message msg) { C4/>if (Msg.what = = 0) {                if (ISQR) {                    Adapter.add ("Two-dimensional code in the identification chart");                }                Adapter.notifydatasetchanged ();            }        };    };
If you click Save picture, use Asnytask thread to save the image to Local:

 /*** * Function: Save picture with thread * * @author WANGYP * */Private class SaveImage extends Asynctask<string, Voi             D, string> {@Override protected string Doinbackground (String ... params) {string result = "";                try {String sdcard;                if (fileutils.sdisexists ()) {sdcard = Environment.getexternalstoragedirectory (). GetAbsolutePath ();                }else{Sdcard=getfilesdir (). GetAbsolutePath ();                } File File = new file (sdcard + "/download");                if (!file.exists ()) {file.mkdirs ();                } file = new file (sdcard + "/download/" + New Date (). GetTime () + ". jpg");                InputStream inputstream = null;                URL url = new URL (imgurl);                HttpURLConnection conn = (httpurlconnection) url.openconnection ();                Conn.setrequestmethod ("GET"); Conn.setconnEcttimeout (20000);                if (conn.getresponsecode () = =) {InputStream = Conn.getinputstream ();                } byte[] buffer = new byte[4096];                int len = 0;                FileOutputStream OutStream = new FileOutputStream (file);                while (len = inputstream.read (buffer))! =-1) {outstream.write (buffer, 0, Len);                } outstream.close ();            result = "Picture saved to:" + File.getabsolutepath (); } catch (Exception e) {result = "Save failed!            "+ e.getlocalizedmessage ();        } return result; } @Override protected void OnPostExecute (String result) {Toast.maketext (h5activity.this,result,to Ast.        Length_short). Show (); }    }

If the user clicks on the identification QR code, the identified QR code link opens the browser:

Intent Intent = new Intent (Intent.action_view); Intent.setdata (Uri.parse (result.tostring ())); StartActivity (Intent); Closedialog ();

Android WebView Long Press to identify the image, using zxing to identify whether the image is a two-dimensional code