Apps Android Retrofit: Unable to upload image to server. Uploads 0 kb image when using file_put_contents
- By AKA001
- Android Development
- 0 Replies
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.
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
$res = mysqli_query($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.
.
