Android import and export via JSON

1 //Export File2         Private voidExport () {3FilePath =NULL;4  5                 //determine if the SD card exists6                 BooleanHassdcard =environment.getexternalstoragestate (). Equals (7 environment.media_mounted);8                 if(hassdcard) {9  TenFilePath =environment.getexternalstoragedirectory (). toString () One+ File.separator + "Hello.txt"; A   -                         Try { -File =NewFile (Environment.getexternalstoragedirectory (), the"Hello.txt"); -                                 if(File.exists ()) { - File.delete (); -                                 } +FileOutputStream OutStream =Newfileoutputstream (file); -Listnote =Createdata.getlistdata (); +Jsonarray Jsonarray =NewJsonarray (); A                                 Try { at                                          for(inti = 0; I < listnote.size (); i++) { -JSON =NewJsonobject (); -Bug.print ("" +listnote.size ()); -SYSTEM.OUT.PRINTLN ("---->" +listnote.size ()); -Json.put ("Id", Listnote.get (i). GetId ()); -Json.put ("Colorid", Listnote.get (i). Getcolorid ()); inJson.put ("Context", Listnote.get (i). GetContext ()); -Json.put ("Time", Listnote.get (i). GetTime ()); toBug.print (json.getstring ("Colorid")); + Jsonarray.put (JSON); -                                         } theString s =jsonarray.tostring (); * System.out.println (s); $ Outstream.write (S.getbytes ());Panax Notoginseng}Catch(jsonexception e) { - e.printstacktrace (); the   +                                 } AToast.maketext ( This. Owner, "", Toast.length_long). Show (); the outstream.close (); + file.createnewfile (); -   $}Catch(Exception e) { $ e.printstacktrace (); - Bug.print (E.getmessage ()); -                         } the                         //Prompt Box -Alertdialog.builder Builder =NewBuilder ( This. Owner);WuyiBuilder.setmessage ("Export succeeded"); the   -Builder.settitle ("Text file (hello.txt) is output to SD card" + file + "directory"); Wu   -Builder.setpositivebutton ("Confirm",NewOnclicklistener () { About @Override $                                  Public voidOnClick (Dialoginterface Dialog,intwhich) { - Dialog.dismiss (); -                                 } -                         }); A builder.create (). Show (); +                 } the         } -   $   the   the   the         //import File the         Private voidIntroduction () { -                 /* in                    the                  */ the                 Try { About   theFile Urlfile =NewFile (environment.getexternalstoragedirectory () the+ "/hello.txt"); theInputStreamReader ISR =NewInputStreamReader (NewFileInputStream ( +Urlfile), "UTF-8"); -BufferedReader br =NewBufferedReader (ISR); thestr = "";BayiString Mimetypeline =NULL; the   the                          while((Mimetypeline = Br.readline ())! =NULL) { -str = str +Mimetypeline; -   the                         } the System.out.println (str); theJsonobject obj =NULL; theJsonarray Jsonarray =NULL; -   theJsonarray =NewJsonarray (str); the                          for(inti = 0; I < jsonarray.length (); i++) { theobj =Jsonarray.getjsonobject (i);94   theStrid = obj.getstring ("Context"); theTime = obj.getstring ("Time"); theColorid = obj.getstring ("Colorid");98   About System.out.println (Strid); -Createdata.insetdata (NewEntity (Strid, Time, Colorid));101                         }102  103LOG.D ("TAG", str);104}Catch(Exception e) { the  106Toast.maketext ( This. Owner, "Import Failed", Toast.length_long). Show ();107                 }108}

Android import and export via JSON