Write, read, and copy pictures of the android. txt file

TXT file write:

1 Private voidSave () {2FileOutputStream fos =NULL;3String state = Environment.getexternalstoragestate ();//SD Status4         if(State.equals (environment.media_mounted)) {//determine if the SD card is available5File root =environment.getexternalstoragedirectory ();6File Targedir =NewFile (Root, Super.getpackagename ());//We're going to write the file accordingly under Activity .7 8             if(!targedir.exists ()) {//determine if a directory exists9Targedir.mkdir ();//CreateTen             } One             //String newfile=file.tostring () + "/" + "user.txt"; A             //IO Operation -             //Flow -             Try { the                 //in parentheses is the path -FOS =NewFileOutputStream (NewFile (Targedir,"Userinfo.txt"));//output Stream -String content =name; -                 /* + * for (int i=0;i<content.length (); i++) { - * Fos.write (Content.charat (i));//byte output} +                  */ A                 byte[] data =content.getbytes (); at fos.write (data); -  -}Catch(FileNotFoundException e) { -                 //TODO auto-generated Catch block - e.printstacktrace (); -}Catch(IOException e) { in                 //IO exception is thrown by input and output - e.printstacktrace (); to}finally { +                 //Open the stream and you need to close it -                 Try { the fos.close (); *}Catch(IOException e) { $                     //TODO auto-generated Catch blockPanax Notoginseng e.printstacktrace (); -                 } the             } +  A         } the}

TXT file read:

1 Private voidRead () {2FileInputStream FIS =NULL;3String State =environment.getexternalstoragestate ();4         if(State.equals (environment.media_mounted)) {5File root =environment.getexternalstoragedirectory ();6File File =NewFile (Root, super.getpackagename () +"/userinfo.txt");7             if(File.exists ()) {8                 Try {9FIS =Newfileinputstream (file);Ten                     intLen =0; OneStringBuilder Builder =NewStringBuilder (); A                     byte[] buffer =New byte[1024x768]; -  -                      while(len = fis.read (buffer))! =-1) { theBuilder.append (NewString (Buffer,0, Len)); -                         //builder.append (buffer);//garbled -                     } -                     /* + * while ((Len=fis.read ())!=-1) {builder.append ((char) len);} -                      */ + Toast.maketext (Getapplicationcontext (), builder.tostring (), A toast.length_short). Show (); at Text2.settext (builder.tostring ()); -  -}Catch(FileNotFoundException e) { -                     //TODO auto-generated Catch block - e.printstacktrace (); -LOG.I ("Read", E.getmessage ()); in}Catch(IOException e) { -                     //TODO auto-generated Catch block to e.printstacktrace (); +}finally { -                     Try { the fis.close (); *}Catch(IOException e) { $                         //TODO auto-generated Catch blockPanax Notoginseng e.printstacktrace (); -                     } the                 } +             } A         } the}

copy of Picture:

Create an image folder under the Assets folder and put a picture in it.

1 Private voidcopy () {2FileOutputStream output =NULL;3InputStream Source =NULL;4String State =environment.getexternalstoragestate ();5         if(State.equals (environment.media_mounted)) {6             //inputstream=super.getresources (). Openrawresource (R.drawable.ic_launcher);7 8             Try {9Assetmanager Manager =super.getassets ();TenSource = Manager.open ("Image/ic_launcher.png"); OneFile target =NewFile ( AEnvironment.getexternalstoragedirectory () +"/" -+ super.getpackagename () +"/mycopyimg.png"); -Output =NewFileOutputStream (target); the  -                 intLen =0; -                 byte[] buffer =New byte[1024x768]; -                  while(len = source.read (buffer))! =-1) { +Output.write (Buffer,0, Len); -                 } +}Catch(IOException e) { A                 //TODO auto-generated Catch block at e.printstacktrace (); -LOG.I ("111", E.getmessage ()); -}finally { -                 Try { - source.close (); - output.close (); in}Catch(IOException e) { -                     //TODO auto-generated Catch block to e.printstacktrace (); +                 } -             } the         } *}

Write, read, and copy pictures of the android. txt file