Android Graphics Data JSON parsing, PowerWord daily an API call

PowerWord development of the free API http://open.iciba.com/dsapi/

Data format is

{"Sid": "737", "TTS": "Http:\/\/news.iciba.com\/admin\/tts\/2013-12-11.mp3", "Content": "I don ' t want us to be together Because we have to,i want us to is together because we want to. "," note ":" \u6211\u4e0d\u5e0c\u671b\u6211\u4eec\u56e0\u4e3a\ U201c\u4e0d\u5f97\u4e0d\u201d\u800c\u5728\u4e00\u8d77\uff0c\u6211\u5e0c\u671b\u6211\u4eec\u662f\u56e0\u4e3a\ U60f3\u5728\u4e00\u8d77\u800c\u5728\u4e00\u8d77\u3002 "," translation ":" \u611f\[email protected]\u7a0b\ U5f88\u591a\u8981\u79d2\u8650\u6570\u5b66 \u6295\u7a3f\u3002\u8bcd\u9738\u5c0f\u7f16\uff0c\u8fd9\u53e5\u8bdd\ U6765\u81ea\u300a\u51b0\u6cb3\u4e16\u7eaa2\u300b\uff0c\u662f\u4e00\u4e2a\u7cfb\u5217\u7684\u52a8\u753b\u7535\ u5f71\uff0c\u975e\u5e38\u641e\u7b11\uff0c\u4f60\u770b\u8fc7\u5417\uff1f "," Picture ":" http:\/\/cdn.iciba.com\/ News\/word\/2013-12-11.jpg "," Picture2 ":" Http:\/\/cdn.iciba.com\/news\/word\/big_2013-12-11b.jpg "," caption ":" \ U8bcd\u9738\u6bcf\u65e5\u4e00\u53e5 "," Dateline ":" 2013-12-11 "," S_PV ":" 8693 "," SP_PV ":" 2090 "," tags ": [{" id ":" 9 "," Name: "\U7231\U60C5"},{"id": "+", "name": "\u7535\u5f71\u7ecf\u5178"}], "fenxiang_img": "http:\/\/cdn.iciba.com\/web\/ News\/longweibo\/imag\/2013-12-11.jpg "}

JSON field explanation

The JSON field explains {' Sid ': ' #每日一句ID ' TTS ': ' #音频地址 ' content ': ' #英文内容 ' note ': ' #中文内容 ' translation ': ' #词霸小编 ' picture ': ' #图片地址 ' Picture2 ': ' #大图片地址 ' caption ': ' #标题 ' Dateline ': ' #时间 ' S_PV ': ' #浏览数 ' SP_PV ': ' #语音评测浏览数 ' tags ': ' #相关标签 ' fenxiang_img ': ' #合成图片, suggested to share the micro-blog}

The effect of the final implementation

Specifically, use Asyntask to access the network asynchronously:

classLoadextendsAsynctask<string, String, string> { PublicString url = "http://open.iciba.com/dsapi/";        ProgressDialog Pdlg;        String jsonstr = ""; Jsonobject JSON =NULL; @OverrideprotectedString Doinbackground (String ... params) {//TODO auto-generated Method Stub            Try{Defaulthttpclient httpClient =NewDefaulthttpclient (); HttpPost HttpPost =NewHttpPost (URL);                HttpResponse HttpResponse = Httpclient.execute (HttpPost);                Httpentity httpentity = httpresponse.getentity ();                InputStream is = Httpentity.getcontent (); BufferedReader reader =NewBufferedReader (NewInputStreamReader (IS, "UTF-8")); StringBuilder SB =NewStringBuilder (); String line =NULL; while(line = Reader.readline ())! =NULL) {Sb.append (line + "\ n");                } is.close ();                Jsonstr = Sb.tostring (); JSON =NewJsonobject (Jsonstr.tostring ());                Engstr = json.getstring ("content");                Chistr = json.getstring ("note");                Imagurl = json.getstring ("picture");                Timestr = json.getstring ("Dateline");                Fromstr = json.getstring ("translation"); Jsonarray array = Json.getjsonarray ("tags"); for(intI=0;i<array.length (); i++) {Jsonobject tag = (jsonobject) array.get (i);                 Tagstr + = tag.getstring ("name") + ","; }            }Catch(Exception e)            {E.printstacktrace (); }return NULL; } @Overrideprotected voidOnPostExecute (String result) {//TODO auto-generated Method Stub            Super. OnPostExecute (Result);            Pdlg.dismiss ();            Imageloader.displayimage (Imagurl,imageview);            Eng.settext ("+engstr");            Chi.settext ("+chistr");            Tag.settext (TAGSTR);            Time.settext (TIMESTR);        From.settext ("+fromstr"); } @Overrideprotected voidOnPreExecute () {//TODO auto-generated Method Stub            Super. OnPreExecute (); Pdlg =NewProgressDialog (context); Pdlg.setcancelable (false);            Pdlg.setmessage ("Loading");        Pdlg.show (); }    }

Use a picture processing tool class, Imageloader, mainly used to parse the image through the URL, processing the size of the picture, as a file cache image.

 Public classImageloader {memorycache memorycache=NewMemoryCache (); Filecache Filecache;PrivateMap<imageview, String> Imageviews=collections.synchronizedmap (NewWeakhashmap<imageview, string> ()); Executorservice Executorservice; PublicImageloader (Context context) {filecache=NewFilecache (context);    Executorservice=executors.newfixedthreadpool (5); }Final intstub_id = R.drawable.drug_trans; Public voidDisplayImage (String URL, ImageView ImageView) {imageviews.put (ImageView, URL); Bitmap bitmap=memorycache.get (URL);if(bitmap!=NULL) Imageview.setimagebitmap (bitmap);Else{Queuephoto (URL, imageView);        Imageview.setimageresource (stub_id); }    }Private voidQueuephoto (String URL, ImageView ImageView) {phototoload p=NewPhototoload (URL, imageView); Executorservice.submit (NewPhotosloader (p)); }PrivateBitmap getbitmap (String url) {File f=filecache.getfile (URL);//From SD CacheBitmap B = DecodeFile (f);if(b!=NULL)returnb//From Web        Try{Bitmap bitmap=NULL; URL IMAGEURL =NewURL (URL);            HttpURLConnection conn = (httpurlconnection) imageurl.openconnection ();            Conn.setconnecttimeout (30000);            Conn.setreadtimeout (30000); Conn.setinstancefollowredirects (true);            InputStream Is=conn.getinputstream (); OutputStream OS =NewFileOutputStream (f);            Utils.copystream (is, OS);            Os.close (); Bitmap = DecodeFile (f);returnBitmap }Catch(Exception ex) {Ex.printstacktrace ();return NULL; }    }//decodes image and scales it to reduce memory consumption    PrivateBitmap DecodeFile (File f) {Try{//decode Image sizeBitmapfactory.options o =NewBitmapfactory.options (); O.injustdecodebounds =true; Bitmapfactory.decodestream (NewFileInputStream (f),NULL, O);//Find the correct scale value. It should be the power of 2.            Final intrequired_size=70;intWidth_tmp=o.outwidth, Height_tmp=o.outheight;intscale=1; while(true){if(Width_tmp/1.5<required_size | | height_tmp/1.5<required_size) Break;                width_tmp/=1.5;                height_tmp/=1.5;            scale*=1.5; }//decode with InsamplesizeBitmapfactory.options O2 =NewBitmapfactory.options (); O2.insamplesize=scale;returnBitmapfactory.decodestream (NewFileInputStream (f),NULL, O2); }Catch(FileNotFoundException e) {}return NULL; }//Task for the queue    Private classPhototoload { PublicString URL; PublicImageView ImageView; PublicPhototoload (String u, ImageView i) {url=u;        Imageview=i; }    }classPhotosloaderImplementsRunnable {phototoload phototoload; Photosloader (Phototoload phototoload) { This. phototoload=phototoload; } @Override Public voidRun () {if(imageviewreused (Phototoload))return;            Bitmap Bmp=getbitmap (Phototoload.url); Memorycache.put (Phototoload.url, BMP);if(imageviewreused (Phototoload))return; Bitmapdisplayer bd=NewBitmapdisplayer (BMP, Phototoload);            Activity a= (activity) photoToLoad.imageView.getContext ();        A.runonuithread (BD); }    }Booleanimageviewreused (Phototoload phototoload) {String tag=imageviews.get (Phototoload.imageview);if(tag==NULL|| !tag.equals (Phototoload.url))return true;return false; }//used to display bitmap in the UI thread    classBitmapdisplayerImplementsRunnable {Bitmap Bitmap; Phototoload Phototoload; PublicBitmapdisplayer (Bitmap B, Phototoload p) {bitmap=b;phototoload=p;} Public voidRun () {if(imageviewreused (Phototoload))return;if(bitmap!=NULL) PhotoToLoad.imageView.setImageBitmap (bitmap);ElsePhotoToLoad.imageView.setImageResource (stub_id); }    } Public voidClearCache () {memorycache.clear ();    Filecache.clear (); }}

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