Tomar una foto con la cámara y enviarla al servidor en bytearray
Estoy trabajando en una aplicación de Andorid en la que me gustaría que el usuario tomara una foto y luego para guardarla la estoy enviando al servidor. Ahora, estoy enviando la imagen como una matriz de bytes al servidor. Cuando intento guardar la matriz de bytes en un archivo como archivo PNG y luego intento abrir el archivo, el visor de imágenes se queja de que PNG tiene errores y no se puede mostrar. El tamaño del archivo PNG era 122Kb.
Cuando intenté usar la biblioteca Scalr para cambiar el tamaño de la imagen, dice que la fuente de la imagen no puede ser nula. Guardar directamente la matriz de bytes está causando un PNG corrupto. ¿Cómo debo convertir y enviar el archivo correctamente al servidor, para que no haya errores? Aquí está el código para la cámara que estoy usando y enviándolo.
public class AddPhotoForUser extends DrawerLoader {
private static final int CAMERA_PIC_REQUEST = 22;
Button BtnSelectImage;
private ImageView ImgPhoto;
private static volatile Bitmap photo;
private static volatile ByteArrayOutputStream stream = new ByteArrayOutputStream();
final PersonServiceImpl personService = new PersonServiceImpl();
private String[] navMenuTitles;
private TypedArray navMenuIcons;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.upload_user_photo);
navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
navMenuIcons = getResources()
.obtainTypedArray(R.array.nav_drawer_icons);
set(navMenuTitles, navMenuIcons);
Button uploadImageButton = (Button) findViewById(R.id.uploadUserImageButton);
uploadImageButton.setVisibility(View.INVISIBLE);
ImgPhoto = (ImageView) findViewById(R.id.userPhotoImageView);
BtnSelectImage = (Button) findViewById(R.id.userPhotoButtonSelect);
BtnSelectImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
try {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Couldn't load photo", Toast.LENGTH_LONG).show();
}
}
});
uploadImageButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!(v == null)) {
uploadImage();
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Intent intent = new Intent(AddPhotoForUser.this, RestaurantList.class);
startActivity(intent);
finish();
}
}
});
}
@Override
public void onBackPressed() {
Intent intent = new Intent(AddPhotoForUser.this, Login.class);
startActivity(intent);
finish();
}
@Override
public void onActivityResult(final int requestCode, int resultCode, Intent data) {
try {
switch (requestCode) {
case CAMERA_PIC_REQUEST:
if (resultCode == RESULT_OK) {
try {
photo = (Bitmap) data.getExtras().get("data");
if (!(photo == null)) {
ImgPhoto.setImageBitmap(photo);
Button uploadImageButton = (Button) findViewById(R.id.uploadUserImageButton);
uploadImageButton.setVisibility(View.VISIBLE);
}
} catch (Exception e) {
Toast.makeText(this, "Couldn't load photo", Toast.LENGTH_LONG).show();
}
}
break;
default:
break;
}
} catch (Exception e) {
e.printStackTrace();
}
}
private void uploadImage() {
if (!(photo == null)) {
photo.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
personService.addUserProfilePhoto(byteArray);
}
}
}
Aquí está el código del lado del servidor para guardar la imagen en el disco:
@Override
public Boolean updateProfilePhoto(byte[] photo) {
Person person = getCurrentlyAuthenticatedPerson();
try{
InputStream in = new ByteArrayInputStream(photo);
BufferedImage image = ImageIO.read(in);
image = Scalr.resize(image, Scalr.Method.QUALITY, 100, 100);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(image, "png", baos);
baos.flush();
File file = new File(userImagePath);
if (file.exists() && file.isDirectory()) {
OutputStream outputStream = new FileOutputStream(new File(userImagePath + person.getUserId()+".png"));
outputStream.write(baos.toByteArray());
outputStream.close();
} else {
File file1 = new File(userImagePath+person.getUserId()+".png");
if (file1.exists()) {
try {
OutputStream outputStream = new FileOutputStream(file1);
outputStream.write(baos.toByteArray());
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
} else {
boolean result = file1.createNewFile();
System.out.println("Result of file1 creation is "+result);
OutputStream outputStream = new FileOutputStream(file1);
outputStream.write(baos.toByteArray());
outputStream.close();
}
}
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
Si no uso la biblioteca Scalr, no hay errores, pero es un archivo corrupto. Aquí está el registro de errores de Scalr:
java.lang.IllegalArgumentException: src cannot be null
at org.imgscalr.Scalr.resize(Scalr.java:1564)
at org.imgscalr.Scalr.resize(Scalr.java:1415)
at com.journaldev.spring.service.PersonServiceImpl.updateProfilePhoto(PersonServiceImpl.java:84)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy51.updateProfilePhoto(Unknown Source)
at com.journaldev.spring.Controller.PersonController.addProfilePhotoForUser(PersonController.java:100)
Se agradece cualquier ayuda. Muchas gracias. :-)
Código actualizado
public class AddPhotoForUser extends DrawerLoader {
Button BtnSelectImage;
private ImageView ImgPhoto;
private static volatile ByteArrayOutputStream stream = new ByteArrayOutputStream();
final PersonServiceImpl personService = new PersonServiceImpl();
private String[] navMenuTitles;
private TypedArray navMenuIcons;
private static final int CAMERA_PHOTO = 111;
private Uri imageToUploadUri;
Bitmap reducedSizeBitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.upload_user_photo);
navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
navMenuIcons = getResources()
.obtainTypedArray(R.array.nav_drawer_icons);
set(navMenuTitles, navMenuIcons);
Button uploadImageButton = (Button) findViewById(R.id.uploadUserImageButton);
uploadImageButton.setVisibility(View.INVISIBLE);
ImgPhoto = (ImageView) findViewById(R.id.userPhotoImageView);
BtnSelectImage = (Button) findViewById(R.id.userPhotoButtonSelect);
BtnSelectImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
try {
captureCameraImage();
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Couldn't load photo", Toast.LENGTH_LONG).show();
}
}
});
uploadImageButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!(v == null)) {
uploadImage();
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Intent intent = new Intent(AddPhotoForUser.this, RestaurantList.class);
startActivity(intent);
finish();
}
}
});
}
private Bitmap getBitmap(String path) {
Uri uri = Uri.fromFile(new File(path));
InputStream in = null;
try {
final int IMAGE_MAX_SIZE = 12000000; // 12MP
in = getContentResolver().openInputStream(uri);
// Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(in, null, o);
in.close();
int scale = 1;
while ((o.outWidth * o.outHeight) * (1 / Math.pow(scale, 2)) >
IMAGE_MAX_SIZE) {
scale++;
}
Log.d("", "scale = " + scale + ", orig-width: " + o.outWidth + ", orig-height: " + o.outHeight);
Bitmap b = null;
in = getContentResolver().openInputStream(uri);
if (scale > 1) {
scale--;
// scale to max possible inSampleSize that still yields an image
// larger than target
o = new BitmapFactory.Options();
o.inSampleSize = scale;
b = BitmapFactory.decodeStream(in, null, o);
// resize to desired dimensions
int height = b.getHeight();
int width = b.getWidth();
Log.d("", "1th scale operation dimenions - width: " + width + ", height: " + height);
double y = Math.sqrt(IMAGE_MAX_SIZE
/ (((double) width) / height));
double x = (y / height) * width;
Bitmap scaledBitmap = Bitmap.createScaledBitmap(b, (int) x,
(int) y, true);
b.recycle();
b = scaledBitmap;
System.gc();
} else {
b = BitmapFactory.decodeStream(in);
}
in.close();
Log.d("", "bitmap size - width: " + b.getWidth() + ", height: " +
b.getHeight());
return b;
} catch (IOException e) {
Log.e("", e.getMessage(), e);
return null;
}
}
private void captureCameraImage() {
Intent chooserIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File f = new File(Environment.getExternalStorageDirectory(), "POST_IMAGE.jpg");
chooserIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
imageToUploadUri = Uri.fromFile(f);
startActivityForResult(chooserIntent, CAMERA_PHOTO);
}
@Override
public void onBackPressed() {
Intent intent = new Intent(AddPhotoForUser.this, Login.class);
startActivity(intent);
finish();
}
@Override
protected void onActivityResult(final int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_PHOTO && resultCode == Activity.RESULT_OK) {
if(imageToUploadUri != null){
Uri selectedImage = imageToUploadUri;
getContentResolver().notifyChange(selectedImage, null);
reducedSizeBitmap = getBitmap(imageToUploadUri.getPath());
if(reducedSizeBitmap != null){
ImgPhoto.setImageBitmap(reducedSizeBitmap);
Button uploadImageButton = (Button) findViewById(R.id.uploadUserImageButton);
uploadImageButton.setVisibility(View.VISIBLE);
}else{
Toast.makeText(this,"Error while capturing Image",Toast.LENGTH_LONG).show();
}
}else{
Toast.makeText(this,"Error while capturing Image",Toast.LENGTH_LONG).show();
}
}
}
private void uploadImage() {
if(!(reducedSizeBitmap == null)){
reducedSizeBitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
this.personService.addUserProfilePhoto(byteArray);
}
}
}
