Saving and Reading Bitmaps Images from Internal memory in Android

Question

What I want to do  is to save an image to the internal memory of the phone  Not The SD Card    How can I do it   I have got the image directly from the camera to the image view in my app its all working fine   Now what I want is to save this image from Image View to the Internal memory of my android device and also access it when required   Can anyone please guide me how to do this   I am a little new to android so please  I would appreciate if I can have a detailed procedure

User · Answer

mutiple image retrieve  File folPath   new File getIntent   getStringExtra  quot folder path quot      File   imagep   folPath listFiles      for  int i   0  i  lt  imagep length   i           imageModelList add new ImageModel imagep i  getAbsolutePath    Uri parse imagep i  getAbsolutePath           imagesAdapter notifyDataSetChanged

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Use the below code to save the image to internal directory   private String saveToInternalStorage Bitmap bitmapImage           ContextWrapper cw   new ContextWrapper getApplicationContext                 path to  data data yourapp app data imageDir         File directory   cw getDir  imageDir   Context MODE PRIVATE              Create imageDir         File mypath new File directory  profile jpg             FileOutputStream fos   null          try                          fos   new FileOutputStream mypath             Use the compress method on the BitMap object to write image to the OutputStream             bitmapImage compress Bitmap CompressFormat PNG  100  fos             catch  Exception e                  e printStackTrace              finally               try                 fos close                  catch  IOException e                  e printStackTrace                                     return directory getAbsolutePath            Explanation     1 The Directory will be created with the given name  Javadocs is for to tell where exactly it will create the directory   2 You will have to give the image name by which you want to save it   To Read the file from internal memory  Use below code   private void loadImageFromStorage String path         try           File f new File path   profile jpg            Bitmap b   BitmapFactory decodeStream new FileInputStream f                ImageView img  ImageView findViewById R id imgPicker           img setImageBitmap b              catch  FileNotFoundException e                 e printStackTrace

User · Answer

Came across this question today and this is how I do it  Just call this function with the required parameters public void saveImage Context context  Bitmap bitmap  String name  String extension       name   name    quot   quot    extension      FileOutputStream fileOutputStream      try           fileOutputStream   context openFileOutput name  Context MODE PRIVATE           bitmap compress Bitmap CompressFormat JPEG  90  fileOutputStream           fileOutputStream close          catch  Exception e            e printStackTrace             Similarly  for reading the same  use this public Bitmap loadImageBitmap Context context String name String extension       name   name    quot   quot    extension     FileInputStream fileInputStream     Bitmap bitmap   null      try          fileInputStream   context openFileInput name           bitmap   BitmapFactory decodeStream fileInputStream           fileInputStream close          catch Exception e            e printStackTrace               return bitmap

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if you want to follow Android 10 practices to write in storage  check here and if you only want the images to be app specific  here for example if you want to store an image just to be used by your app  viewModelScope launch Dispatchers IO                getApplication lt Application gt    openFileOutput filename  Context MODE PRIVATE  use                   bitmap compress Bitmap CompressFormat PNG  50  it                           getApplication is a method to give you context for ViewModel and it s part of AndroidViewModel later if you want to read it  viewModelScope launch Dispatchers IO                val savedBitmap   BitmapFactory decodeStream                  getApplication lt App gt    openFileInput filename  readBytes   inputStream

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For Kotlin users  I created a ImageStorageManager class which will handle save  get and delete actions for images easily   class ImageStorageManager       companion object           fun saveToInternalStorage context  Context  bitmapImage  Bitmap  imageFileName  String   String               context openFileOutput imageFileName  Context MODE PRIVATE  use   fos - gt                  bitmapImage compress Bitmap CompressFormat PNG  25  fos                            return context filesDir absolutePath                    fun getImageFromInternalStorage context  Context  imageFileName  String   Bitmap                val directory   context filesDir             val file   File directory  imageFileName              return BitmapFactory decodeStream FileInputStream file                      fun deleteImageFromInternalStorage context  Context  imageFileName  String   Boolean               val dir   context filesDir             val file   File dir  imageFileName              return file delete                       Read more here

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Created by Ilya Gazman on 3 6 2016      public class ImageSaver        private String directoryName    images       private String fileName    image png       private Context context      private boolean external       public ImageSaver Context context            this context   context             public ImageSaver setFileName String fileName            this fileName   fileName          return this             public ImageSaver setExternal boolean external            this external   external          return this             public ImageSaver setDirectoryName String directoryName            this directoryName   directoryName          return this             public void save Bitmap bitmapImage            FileOutputStream fileOutputStream   null          try               fileOutputStream   new FileOutputStream createFile                 bitmapImage compress Bitmap CompressFormat PNG  100  fileOutputStream             catch  Exception e                e printStackTrace              finally               try                   if  fileOutputStream    null                        fileOutputStream close                                    catch  IOException e                    e printStackTrace                                        NonNull     private File createFile             File directory          if external               directory   getAlbumStorageDir directoryName                     else               directory   context getDir directoryName  Context MODE PRIVATE                     if  directory exists    amp  amp   directory mkdirs                 Log e  ImageSaver   Error creating directory     directory                      return new File directory  fileName              private File getAlbumStorageDir String albumName            return new File Environment getExternalStoragePublicDirectory                  Environment DIRECTORY PICTURES   albumName              public static boolean isExternalStorageWritable             String state   Environment getExternalStorageState            return Environment MEDIA MOUNTED equals state              public static boolean isExternalStorageReadable             String state   Environment getExternalStorageState            return Environment MEDIA MOUNTED equals state                     Environment MEDIA MOUNTED READ ONLY equals state              public Bitmap load             FileInputStream inputStream   null          try               inputStream   new FileInputStream createFile                 return BitmapFactory decodeStream inputStream             catch  Exception e                e printStackTrace              finally               try                   if  inputStream    null                        inputStream close                                    catch  IOException e                    e printStackTrace                                    return null            Usage   To save   new ImageSaver context           setFileName  myImage png            setDirectoryName  images            save bitmap    To load   Bitmap bitmap   new ImageSaver context           setFileName  myImage png            setDirectoryName  images            load       Edit   Added ImageSaver setExternal boolean  to support saving to external storage based on googles example

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public static String saveImage String folderName  String imageName  RelativeLayout layoutCollage            String selectedOutputPath               if  isSDCARDMounted                  File mediaStorageDir   new File                      Environment getExternalStoragePublicDirectory Environment DIRECTORY PICTURES   folderName                  Create a storage directory if it does not exist             if   mediaStorageDir exists                      if   mediaStorageDir mkdirs                          Log d  PhotoEditorSDK    Failed to create directory                                                   Create a media file name             selectedOutputPath   mediaStorageDir getPath     File separator   imageName              Log d  PhotoEditorSDK    selected camera path     selectedOutputPath               File file   new File selectedOutputPath               try                   FileOutputStream out   new FileOutputStream file                   if  layoutCollage    null                        layoutCollage setDrawingCacheEnabled true                       layoutCollage getDrawingCache   compress Bitmap CompressFormat JPEG  80  out                                     out flush                    out close                  catch  Exception e                    e printStackTrace                                    return selectedOutputPath           private static boolean isSDCARDMounted             String status   Environment getExternalStorageState            return status equals Environment MEDIA MOUNTED

User · Answer

Make sure to use WEBP as your media format to save more space with same quality  fun saveImage context  Context  bitmap  Bitmap  name  String   String           context openFileOutput name  Context MODE PRIVATE  use   fos - gt              bitmap compress Bitmap CompressFormat WEBP  25  fos                return context filesDir absolutePath

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