show hidden files android

troublesome.But Google has provided us with a dedicated access to internal storage api:getfilesdir () Create a file where the user saves the user name and password //file file = new file ("Data/data/com.demo.storage/info.txt"); Getfilesdir returns a file object whose path is: data/data/com.demo.storage/files File File = new file (Getfilesdir (), "Info.txt") ;The path to the Getfiledir is under the

(). setParameter (CoreConnectionPNames. CONNECTION_TIMEOUT, 5000); HttpP Ost httpPost = new HttpPost (url); httpPost. setEntity (entity); try {HttpResponse httpResponse = httpClient.exe cute (httpPost); if (httpResponse. getStatusLine (). getStatusCode () = HttpStatus. SC _ OK) {return "File Uploaded successfully";} catch (ClientProtocolException e) {e. printStackTrace ();} catch (ConnectTimeoutException e) {e. printStackTrace ();} catch (Exception e) {e. printStackTrace ();} finally {if (http

How to Use SharedPreference to save files for Android storage Learning In the last two sections, we used text files to store user information, which is obviously vulnerable. At the same time, it is difficult to manage the content in the file. Today, we learn to use SharedPreference to save. SharedPreference stores scattered data. We still use the example in the s

two different ways:First, the window interface operation1. Open DDMS page2. Open the File Explorer page, if not, at window---Show View-->file Explorer3, generally in mnt--sdcard4. In SDcard, click on the destination folder where you want to put the file, such as mp3 folder5, click on the folder, on the right side of the File Explorer page, there are two icons, one is pull, one is Push,pull will be mp3 inside the file pulled out, push is the outside, s

);BufferedReader br = new BufferedReader (new InputStreamReader (FIS));String result = Br.readline ();Toast.maketext (Mainactivity.this,ResultToast.length_long). Show ();} catch (Exception e) {TODO auto-generated Catch blockE.printstacktrace ();Toast.maketext (Mainactivity.this,"Failed to read file",Toast.length_long). Show ();}}Write file:public void Writeinfo (view view) {File File = new file ("/data/data

=NewStringBuffer (); while(ch = is. read ())! =-1) {b.append (Char) ch); } /*Show Response on dialog*/ShowDialog (activity,true, UploadFile,"Upload Successful"+b.tostring (). Trim ()); } Catch(Exception e) {showDialog (activity,false, UploadFile,"Upload failed"+e); }finally { /*Close DataOutputStream*/ if(ds!=NULL){ Try{ds.close (); } Catch(IOException e) {e.printstacktrace (); } }

entire application, and the application destroys it to destroy fileservice service = new Fileservice ( Getapplicationcontext ()); try { //To determine if the sdcard exists, and can read and write,//environment.getexternalstoragestate () Gets the current state://environment.media_ Mounted represents the state of SDcard: Presence Sdcardif (Environment.getexternalstoragestate (). Equals (environment.media_mounted)) { Service.savetosdcard (filename, content); Call the Save () method to save

savedinstancestate) {//TODO auto-generated Method Stub Super. OnCreate (savedinstancestate); Setcontentview (R.layout.activity_main); Et_username= (EditText) This. Findviewbyid (R.id.et_username); Et_pwd= (EditText) This. Findviewbyid (R.ID.ET_PWD); Cb_checked= (CheckBox) This. Findviewbyid (r.id.cb_checked); Bt_login= (Button) This. Findviewbyid (R.id.bt_login); Bt_login.setonclicklistener ( This); Map This); if(Map! =NULL) {Et_username.settext (Map.get ("Username")); Et_pwd.sett

) {b.append ((char) ch),}/* Displays response in Dialog/ShowDialog (activity,true,uploadfile, "Upload succeeded "+ b.tostring (). Trim ()); catch (Exception e) {ShowdiAlog (Activity,false,uploadfile, "upload failure" + e); }finally {/* close DataOutputStream/if (ds!=null) {try {ds.close ();} catch (IOException e) {e.printstacktrace ();}} if (Is!= null) {try {is.close ();} catch (IOException e) {e.printstacktrace ()}} if (con!= null) {Con.disconnect ();}} /*