How do I upload an image to the Server? Both MultiPArtEntity and MultiPartEntityBuilder classes are deprecated in API level 23. Can we do this using HTTPUrlConnection or volley?
2 Answers
I suggest that you use OkHttp. More details about it you can find at the following:
OkHttp - An HTTP & SPDY client for Android and Java applications
Please refer to my basic sample code that uploads a PNG file from drawable folder to remote web service. Hope this helps!
... mTextView = (TextView) findViewById(R.id.textView); mHandler = new Handler(Looper.getMainLooper()); ... Drawable drawable = getResources().getDrawable(R.drawable.ic_launcher); if (drawable != null) { Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap(); ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 0, stream); final byte[] bitmapdata = stream.toByteArray(); OkHttpClient client = new OkHttpClient(); RequestBody requestBody = new MultipartBuilder() .type(MultipartBuilder.FORM) .addPart( Headers.of("Content-Disposition", "form-data; name=\"file\"; filename=\"ic_launcher.png\""), RequestBody.create(MEDIA_TYPE_PNG, bitmapdata)) .build(); final Request request = new Request.Builder() .url("http://myserver/api/files") .post(requestBody) .build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(final Request request, final IOException e) { Log.e(LOG_TAG, e.toString()); mHandler.post(new Runnable() { @Override public void run() { Toast.makeText(mContext, e.toString(), Toast.LENGTH_SHORT).show(); mTextView.setText(e.toString()); } }); } @Override public void onResponse(Response response) throws IOException { final String message = response.toString(); Log.i(LOG_TAG, message); mHandler.post(new Runnable() { @Override public void run() { Toast.makeText(mContext, message, Toast.LENGTH_SHORT).show(); mTextView.setText(message); } }); } }); } 
Comments
Hello totally above answer is correct and accepted but here is the another solution the easiest way ever for posting image to the server:-
Using rest api from andoid spring framework in your android project just create new custom interface as below :-
@Rest(rootUrl ="BASE_URL", converters = {ByteArrayHttpMessageConverter.class, FormHttpMessageConverter.class, StringHttpMessageConverter.class}) public interface CustomRest extends RestClientErrorHandling { @Post("YourPostfixforUrl") String _postImage(MultiValueMap<String, Object> multiValueMap); }
Create your own RestErrorHandler using below code:-
@EBean public class CustomRestErrorHandler implements RestErrorHandler { @Override public void onRestClientExceptionThrown(NestedRuntimeException e) { Log.e("NestedRuntimeException ", "NestedRuntimeException :- " + e.toString()); } } On Your activity call bellow code :-
@AfterInject public void afterInject() { MultiValueMap<String, Object> ObjectMultiValueMap = new LinkedMultiValueMap<>(); ObjectMultiValueMap.add("yourImageKey", new FileSystemResource(new File("yourFilePath"))); doInBackground(myrest, ObjectMultiValueMap); } @Background public void doInBackground(Myrest myrest, MultiValueMap<String, Object> multiValueMap) { myrest.setRestErrorHandler(myErrorHandler); } Your Gradle will look like below:-
def AAVersion = '3.3.2' dependencies { compile fileTree(include: ['*.jar'], dir: 'libs') apt "org.androidannotations:androidannotations:$AAVersion" compile "org.androidannotations:androidannotations-api:$AAVersion" compile 'org.springframework.android:spring-android-core:1.0.1.RELEASE' compile 'org.springframework.android:spring-android-rest-template:1.0.1.RELEASE'} NOTE:- Your activity Must be @Eactivity
--> I Guess androidannotation+rest is the best time saver and sincerely optimizing the code snippets! Thanks
