How to post an image to server in android - http-post

Question

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?

Answer 1

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);
}
});
}
});
}

Answer 2

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