Take picture and convert to Base64

Question

I use code below to make a picture with camera. Instead of saving I would like to encode it to Base64 and after that pass it to another API as an input. I can't see method, how to modify code to take pictures in Base64 instead of regular files.

public class CameraDemoActivity extends Activity {     int TAKE_PHOTO_CODE = 0;     public static int count = 0;      @Override     public void onCreate(Bundle savedInstanceState)     {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);          final String dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/picFolder/";         File newdir = new File(dir);         newdir.mkdirs();          Button capture = (Button) findViewById(R.id.btnCapture);         capture.setOnClickListener(new View.OnClickListener() {             public void onClick(View v) {                 count++;                 String file = dir+count+".jpg";                 File newfile = new File(file);                 try {                     newfile.createNewFile();                 }                 catch (IOException e)                 {                 }                  Uri outputFileUri = Uri.fromFile(newfile);                  Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                 cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);                  startActivityForResult(cameraIntent, TAKE_PHOTO_CODE);             }         });     }      @Override     protected void onActivityResult(int requestCode, int resultCode, Intent data) {         super.onActivityResult(requestCode, resultCode, data);          if (requestCode == TAKE_PHOTO_CODE && resultCode == RESULT_OK) {             Log.d("CameraDemo", "Pic saved");         }     } } 

I try to use code below to convert an image to Base64.

public static String encodeToBase64(Bitmap image, Bitmap.CompressFormat compressFormat, int quality) {     ByteArrayOutputStream byteArrayOS = new ByteArrayOutputStream();     image.compress(compressFormat, quality, byteArrayOS);     return Base64.encodeToString(byteArrayOS.toByteArray(), Base64.DEFAULT); } 

Above described should be a much more direct and easier way than saving image and after that looking for image to encode it.

Answer 1

Try this:
ImageUri to Bitmap:

 @Override         protected void onActivityResult(int requestCode, int resultCode, Intent data) {             super.onActivityResult(requestCode, resultCode, data);              if (requestCode == TAKE_PHOTO_CODE && resultCode == RESULT_OK) {                 final Uri imageUri = data.getData();                 final InputStream imageStream = getContentResolver().openInputStream(imageUri);                 final Bitmap selectedImage = BitmapFactory.decodeStream(imageStream);                 String encodedImage = encodeImage(selectedImage);             }         } 

Encode Bitmap in base64

   private String encodeImage(Bitmap bm)     {         ByteArrayOutputStream baos = new ByteArrayOutputStream();         bm.compress(Bitmap.CompressFormat.JPEG,100,baos);         byte[] b = baos.toByteArray();         String encImage = Base64.encodeToString(b, Base64.DEFAULT);          return encImage;     } 

Encode from FilePath to base64

 private String encodeImage(String path)     {         File imagefile = new File(path);         FileInputStream fis = null;         try{             fis = new FileInputStream(imagefile);         }catch(FileNotFoundException e){             e.printStackTrace();         }         Bitmap bm = BitmapFactory.decodeStream(fis);         ByteArrayOutputStream baos = new ByteArrayOutputStream();         bm.compress(Bitmap.CompressFormat.JPEG,100,baos);         byte[] b = baos.toByteArray();         String encImage = Base64.encodeToString(b, Base64.DEFAULT);         //Base64.de         return encImage;      } 

output:

Answer 2

I've wrote my code like this :

public class MainActivity extends AppCompatActivity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          Camera mCamera = Camera.open();         mCamera.startPreview();// I don't know why I added that,                                 // but without it doesn't work... :D          mCamera.takePicture(null, null, mPicture);     }      private Camera.PictureCallback mPicture = new Camera.PictureCallback() {          @Override         public void onPictureTaken(byte[] data, Camera camera) {             System.out.println("***************");             System.out.println(Base64.encodeToString(data, Base64.DEFAULT));             System.out.println("***************");         }     }; } 

It works perfectly...