Android Data loading and JSON parsing--original version

1. Create an entity class to download data from

class MyData    {        String imagepath;        String title;        desc;        publicdesc)        {            super();            this.imagepath = imagepath;            this.title = title;            this.descdesc;        }    }

2. Asynctask data loading and JSON parsing class

   class fileasynctask extends asynctask<String, Void, String> {@OverrideprotectedString Doinbackground (String ... params) {InputStream is =NULL; Bytearraybuffer Bytearraybuffer =NewBytearraybuffer (4000);Try{URL url =NewURL (params[0]); URLConnection openconnection = Url.openconnection ();//Set the time when the connection timed outOpenconnection.setconnecttimeout ( the);//Data read time-outOpenconnection.setreadtimeout ( the); is = Openconnection.getinputstream ();byte[] buffer =New byte[1024x768];intLen while(-1! = (len = is.read (buffer))) {Bytearraybuffer.append (buffer,0, Len); }            }Catch(Malformedurlexception e)            {E.printstacktrace (); }Catch(IOException e) {//TODO auto-generated catch blockRunonuithread (NewRunnable () { Public voidRun () {//Set the control when loading the exception, usually showing the progress bar}                   });            E.printstacktrace (); }finally{if(Is! =NULL)                {Try{Is.close (); }Catch(IOException e) {//TODO auto-generated catch blockE.printstacktrace (); }}} String res =NewString (Bytearraybuffer.tobytearray (),0, Bytearraybuffer.length ());returnRes }//Parse Jsonarray data@Overrideprotected voidOnPostExecute (String result) {Try{Jsonarray Jsonarray =NewJsonarray (result); for(inti =0; I < jsonarray.length ();                    i++) {Jsonobject jsonobject = Jsonarray.getjsonobject (i); String ImagePath = jsonobject.getstring ("ImagePath"); String title = Jsonobject.getstring ("title"); Stringdesc= Jsonobject.getstring ("desc"); MyData MyData =NewMyData (ImagePath, title,desc); Datalist.add (MyData);//Add Data} myadapter.notifydatasetchanged ();//Notification adapter data changes}Catch(Jsonexception e) {//TODO auto-generated catch blockE.printstacktrace (); }Super. OnPostExecute (Result); }    }

3. Call

privatenew ArrayList<MainActivity.MyData>();//声明全局变量dataList new FileAsyncTask();        fileAsyncTask.execute("http://192.168.56.1:8080/service.txt");

Android Data loading and JSON parsing--original version