How to delete a file from SD card

Question

I am creating a file to send as an attachment to an email  Now I want to delete the image after sending the email  Is there a way to delete the file   I have tried myFile delete    but it didn t delete the file     I m using this code for Android  so the programming language is Java using the usual Android ways to access the SD card  I am deleting the file in the onActivityResult method  when an Intent is returned to the screen after sending an email

User · Answer

private boolean deleteFromExternalStorage File file                            String fileName     Music                            String myPath  Environment getExternalStorageDirectory   getAbsolutePath     fileName                           file   new File myPath                           System out println  fullPath -     myPath                               if  file exists    amp  amp  file canRead                                      System out println   Test -                                     file delete                                    return false     File exists                                                           System out println   Test2 -                                 return true     File not exists

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Also you have to give permission if you are using  1 6 SDK  uses-permission android name  android permission WRITE EXTERNAL STORAGE    in AndroidManifest xml file

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Android Context has the following method   public abstract boolean deleteFile  String name    I believe this will do what you want with the right App premissions as listed above

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Sorry  There is a mistake in my code before because of the site validation    String myFile     Name Folder File jpg      String myPath   Environment getExternalStorageDirectory   myFile     File f   new File myPath   Boolean deleted   f delete      I think is clear     First you must to know your file location  Second    Environment getExternalStorageDirectory   is a method who gets your app directory  Lastly the class File who handle your file

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This works for me   Delete image from Gallery   File file   new File photoPath   file delete     context sendBroadcast new Intent Intent ACTION MEDIA SCANNER SCAN FILE  Uri fromFile new File photoPath

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You can delete a file as follow   File file   new File  your sdcard path is here which you want to delete    file delete    if  file exists       file getCanonicalFile   delete      if  file exists         deleteFile file getName

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Change for Android 4 4   Apps are not allowed to write  delete  modify      to external storage except to their package-specific directories   As Android documentation states       Apps must not be allowed to write to secondary external storage   devices  except in their package-specific directories as allowed by   synthesized permissions     However nasty workaround exists  see code below   Tested on Samsung Galaxy S4  but this fix does t work on all devices  Also I wouldn   t count on this workaround being available in future versions of Android   There is a great article explaining  4 4   external storage permissions change   You can read more about workaround here  Workaround source code is from this site   public class MediaFileFunctions         TargetApi Build VERSION CODES HONEYCOMB      public static boolean deleteViaContentProvider Context context  String fullname                Uri uri getFileUri context fullname           if  uri  null                    return false                 try                    ContentResolver resolver context getContentResolver                  change type to image  otherwise nothing will be deleted           ContentValues contentValues   new ContentValues              int media type   1            contentValues put  media type   media type             resolver update uri  contentValues  null  null              return resolver delete uri  null  null   gt  0                  catch  Throwable e                     return false                      TargetApi Build VERSION CODES HONEYCOMB     private static Uri getFileUri Context context  String fullname                 Note  check outside this class whether the OS version is  gt   11        Uri uri   null         Cursor cursor   null         ContentResolver contentResolver   null         try                   contentResolver context getContentResolver              if  contentResolver    null              return null            uri MediaStore Files getContentUri  external              String   projection   new String 2             projection 0      id             projection 1      data             String selection     data              this avoids SQL injection           String   selectionParams   new String 1             selectionParams 0    fullname            String sortOrder     id             cursor contentResolver query uri  projection  selection  selectionParams  sortOrder              if  cursor  null                           try                                if  cursor getCount    gt  0     file present                                         cursor moveToFirst                       int dataColumn cursor getColumnIndex   data                       String s   cursor getString dataColumn                      if   s equals fullname                         return null                     int idColumn   cursor getColumnIndex   id                       long id   cursor getLong idColumn                      uri  MediaStore Files getContentUri  external  id                                     else    file isn t in the media database                                         ContentValues contentValues new ContentValues                       contentValues put   data  fullname                      uri   MediaStore Files getContentUri  external                       uri   contentResolver insert uri contentValues                                                 catch  Throwable e                                 uri   null                             finally                               cursor close                                             catch  Throwable e                     uri null                  return uri

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I had a similar issue with an application running on 4 4  What I did was sort of a hack   I renamed the files and ignored them in my application   ie    File sdcard   Environment getExternalStorageDirectory                    File from   new File sdcard   ecatAgent   fileV                   File to   new File sdcard   ecatAgent    Delete                    from renameTo to

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File file   new File selectedFilePath   boolean deleted   file delete      where selectedFilePath is the path of the file you want to delete - for example       sdcard YourCustomDirectory ExampleFile mp3

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public static boolean deleteDirectory File path           TODO Auto-generated method stub     if  path exists               File   files   path listFiles            for int i 0  i lt files length  i                  if files i  isDirectory                      deleteDirectory files i                              else                   files i  delete                                      return path delete          This Code will Help you   And In Android Manifest You have to get Permission to make modification      lt uses-permission android name  android permission WRITE EXTERNAL STORAGE   gt

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This worked for me   String myFile     Name Folder File jpg      String my Path   Environment getExternalStorageDirectory   myFile     File f   new File my Path   Boolean deleted   f delete

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Recursively delete all children of the file      public static void DeleteRecursive File fileOrDirectory        if  fileOrDirectory isDirectory              for  File child   fileOrDirectory listFiles                  DeleteRecursive child                        fileOrDirectory delete

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File filedel   new File   storage sdcard0 Baahubali mp3    boolean deleted1   filedel delete      Or  Try This   String del   storage sdcard0 Baahubali mp3   File filedel2   new File del   boolean deleted1   filedel2 delete

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Try this   File file   new File FilePath   FileUtils deleteDirectory file     from Apache Commons

[android] How to delete a file from SD card?

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