Android Retrofit: Unable to upload image to server. Uploads 0 kb image when using file_put_contents

[aka001]

Hi,

I am trying to use retrofit to upload an image from the android device to mysql database and server. Below is the java code that I am using for uploading the image:

private void uploadImage() {


Bitmap fullSizeBitmap = BitmapFactory.decodeFile(pathToFile);
Bitmap reducedBitmap = ImageResizer.reduceBitmapSize(fullSizeBitmap,240000);
File reducedFile = getBitmapfile(reducedBitmap);


MultipartBody.Part parts = null;



Retrofit retrofit = NetworkClient.getRetrofit();
UploadAPIs uploadAPIs = retrofit.create(UploadAPIs.class);
RequestBody requestBody = RequestBody.create(MediaType.parse("image/*"), reducedFile);


parts = MultipartBody.Part.createFormData("newimage", reducedFile.getName(),requestBody);

// RequestBody someData = RequestBody.create(MediaType.parse("text/plain"),"This is a new image");

Call call = uploadAPIs.uploadImage(parts);


call.enqueue(new Callback() {
@override
public void onResponse(Call call, retrofit2.Response response) {

Toast.makeText(Bottom_up.this, "uploaded image", Toast.LENGTH_SHORT).show();
}

@override
public void onFailure(Call call, Throwable t) {
Toast.makeText(Bottom_up.this, "upload image error", Toast.LENGTH_SHORT).show();

}
});

}
//image upload to server and reduce size
private File getBitmapfile(Bitmap reducedBitmap) {
File file = new File(Environment.getExternalStorageDirectory() + File.separator + "reduced_file");
//"reduced_file");

ByteArrayOutputStream byteArrayOutputStream=new ByteArrayOutputStream();
reducedBitmap.compress(Bitmap.CompressFormat.JPEG,40,byteArrayOutputStream);
byte[] imgbytes=byteArrayOutputStream.toByteArray();
try {
file.createNewFile();
FileOutputStream fos = new FileOutputStream(file);
fos.write(imgbytes);
fos.flush();
fos.close();
return file;
} catch (Exception e) {
e.printStackTrace();
}
return file;
}



The pathtofile in the above function is coming from the below:

private void dispatchPictureTakenAction() {
Intent takePic = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePic.resolveActivity(getPackageManager())!=null) {

photoFile = createPhotoFile();

if (photoFile != null) {
//path to file in below variable
pathToFile = photoFile.getAbsolutePath();
Uri photoURI = FileProvider.getUriForFile(Bottom_up.this,"com.android.cameraandroid.fileprovider",photoFile);
takePic.putExtra(MediaStore.EXTRA_OUTPUT,photoURI);

startActivityForResult(takePic, 1);

}

}
}

private File createPhotoFile() {
String name = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File storageDir = getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
File image =null;
try {
image = File.createTempFile(name,".jpg", storageDir);
} catch (IOException e) {
Log.d("myLog","Exception: " + e.toString());
}
return image;

}

Below is the api client code:

public class NetworkClient {

private static Retrofit retrofit;
private static String BASE_URL = "http://192.168.2.13/Dashboard/";

public static Retrofit getRetrofit() {
OkHttpClient okHttpClient = new OkHttpClient.Builder().build();

if (retrofit == null) {
retrofit = new Retrofit.Builder().baseUrl(BASE_URL).
addConverterFactory(GsonConverterFactory.create()).
client(okHttpClient).
build();
}
return retrofit;

}

}

Below is the API interface code (insert is the server side PHP script):
public interface UploadAPIs {
@Multipart
@POST ("insert")
Call<RequestBody> uploadImage(@Part MultipartBody.Part reducedFile);

}

Now, in the PHP script I have tried the following:

1. Use file_put_contents (it uploads a blank image i.e. 0 kb image on the server):
$image = $_POST["newimage"];
$sql ="SELECT id FROM

ORDER BY id ASC";

$res = mysqli_query($connect,$sql);
$id = 0;

while($row = mysqli_fetch_array($res)){
$id = $row['id'];
}

$upload_paths = "Photo/$id.jpg";
file_put_contents($upload_paths,$image);

2. Use move_uploaded_file (it throws an error for undefined index for newimage and errors the upload. It seems like the key value for newimage is not being sent to the php script):
$image = $_FILES["newimage"];

if (move_uploaded_file($image, $upload_paths))

{
echo “Successfully uploaded $image.";

}
else
{
echo "Error uploading THIS $image.";
}

Can anyone please let me know what I could be missing or doing incorrect in the above code?

Appreciate your help in advance.

 

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