I'm trying to send a Json object to a server with android studio, using okhttp3, and my app always crashes when I just try to send the json, when the app says the message was sent. In addition, I need to see in response my own json I created as a confirmation that my Json worked.
public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
OkHttpClient client = new OkHttpClient();
void post(String url, String json) throws IOException {
RequestBody body = RequestBody.create(JSON, json);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
okhttp3.Call call = client.newCall(request);
call.enqueue(new Callback() {
#Override
public void onFailure(okhttp3.Call call, IOException e) {
Log.e("TAG", "Failed sending message!");
Toast.makeText(MainActivity.this,"Failed sending message",Toast.LENGTH_LONG).show();
}
#Override
public void onResponse(okhttp3.Call call, Response response) throws IOException {
Log.d("TAG", "Message sent successfully!");
Log.d("TAG", response.body().string());
Toast.makeText(MainActivity.this,"Message sent successfully!",Toast.LENGTH_LONG).show();
}
});
}
My problem seems to appear in the onResponse and onFaliure functions. Here is the error I get on the variables I put in these functions: http://prntscr.com/i0dhgi
The error appears on all 4 variables, two in onFaliure and two in onResponse
I ran your code on my machine what you need to do is something like that but make sure you have this in you app's build.gradle
compile 'com.android.support:support-annotations:20.0.0' if you are using old android studio version. new versions make project with builtin annotation processor
public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
OkHttpClient client = new OkHttpClient();
void post(String url, String json) throws IOException {
RequestBody body = RequestBody.create(JSON, json);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
okhttp3.Call call = client.newCall(request);
call.enqueue(new Callback() {
#Override
public void onFailure( #NonNull okhttp3.Call call,#NonNull IOException e) {
Log.e("TAG", "Failed sending message!");
//using a toast means updating the UI thread from back thread you have to call Content.runOnUiThread(new Runnable) to sync with the UI thread.
//Toast.makeText(MainActivity.this,"Failed sending message",Toast.LENGTH_LONG).show();
}
#Override
public void onResponse(#NonNull okhttp3.Call call,#NonNull Response response) throws IOException {
Log.d("TAG", "Message sent successfully!");
Log.d("TAG", response.body().string());
//Toast.makeText(MainActivity.this,"Message sent successfully!",Toast.LENGTH_LONG).show();
}
});
}
take a look at the picture I ran the code with dummy values and got to see the logcat clearly saying about thread handling issue!
here is the final solution for you that I made will do the trick
NOTE! you can replace "MainActivity.this" with your local Context
public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
OkHttpClient client = new OkHttpClient();
void post(String url, String json) throws IOException {
RequestBody body = RequestBody.create(JSON, json);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
okhttp3.Call call = client.newCall(request);
call.enqueue(new Callback() {
#Override
public void onFailure( #NonNull okhttp3.Call call,#NonNull IOException e) {
MyActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
//Handle UI here
// Toast anything you like here//
}
});
}
#Override
public void onResponse(#NonNull okhttp3.Call call,#NonNull Response response) throws IOException {
MyActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
//Handle UI here
//happy on Response Toast here
}
});
}
}
});
}
Related
I'm using an asynchronous request (because synchronous doesn't work correctly with this API), the OkHttp3 library. Inside the request, I get a response in the form of JSON. I need to somehow pass values from Json to a class variable. I decided to try it this way, but it doesn't work.
public String sessionId = null;
...
public QRcodeReader() throws Exception {
this.sessionId = null;
}
... // between this code I have 1 function, which reg my number.
// in this func I need to confirm my phone by code in SMS.
public void SmsCode(String Code) // String get from another class
{
SmsJson smsJson = new SmsJson("*phoneNumber*", "*secret_key*", "*os*", Code);
Gson gson = new GsonBuilder().disableHtmlEscaping().create();
RequestBody body = RequestBody.create(
MediaType.parse("application/json"), gson.toJson(smsJson));
Request request = new Request.Builder()
.url("https://irkkt-mobile.nalog.ru:8888/v2/auth/phone/verify")
.addHeader("Host", HOST)
.addHeader("Accept", ACCEPT)
.addHeader("Device-OS", DEVICE_OS)
.addHeader("Device-ID", DEVICE_ID)
.addHeader("clientVersion", CLIENT_VERSION)
.addHeader("Accept-Language", ACCEPT_LANGUAGE)
.addHeader("User-Agent", USER_AGENT)
.post(body)
.build();
httpClient.newCall(request).enqueue(new Callback() {
#Override
public void onResponse(#NonNull Call call, #NonNull Response response) throws IOException {
try (Response responseBody = httpClient.newCall(request).execute()) {
if (!responseBody.isSuccessful())
throw new IOException("Unexpected code " + responseBody);
// Here I try to transfer data from request to class variable. Not Work.
SetSessionId(Objects.requireNonNull(responseBody.body()).string());
System.out.println(Objects.requireNonNull(responseBody.body()).string());
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
});
}
void SetSessionId(String sessionId){
this.sessionId = sessionId;
}
I need to use SessionID further along here:
public String GetTicketID(String QR){
TicketID ticketID = new TicketID(QR);
Gson gson = new GsonBuilder().disableHtmlEscaping().create();
RequestBody body = RequestBody.create(
MediaType.parse("application/json"), gson.toJson(ticketID));
Request request = new Request.Builder()
.url("https://irkkt-mobile.nalog.ru:8888/v2/ticket")
.addHeader("Host", HOST)
.addHeader("Accept", ACCEPT)
.addHeader("Device-OS", DEVICE_OS)
.addHeader("Device-ID", DEVICE_ID)
.addHeader("clientVersion", CLIENT_VERSION)
.addHeader("Accept-Language", ACCEPT_LANGUAGE)
.addHeader("User-Agent", USER_AGENT)
.addHeader("sessionId", sessionId) // Here I get NULL and exception!
.post(body)
.build();
httpClient.newCall(request).enqueue(new Callback() {
#Override
public void onResponse(Call call, Response response) throws IOException {
try (Response responseBody = httpClient.newCall(request).execute()) {
if (!responseBody.isSuccessful())
throw new IOException("Unexpected code " + responseBody);
System.out.println(Objects.requireNonNull(responseBody.body()).string());
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
});
return ""; // Here I need to transfer id to another variable, not did it yet.
}
The problem is that SessionID = Null and the request does not work.
I think I'm doing something wrong, but I can't figure out what. May be it is because async request..
currently working on an Android App and I'm supposed to send JSON data to a server and receive back a response, but the server doesn't recognize the data frame as a JSON type it still shows its content but replies with a 404 code
here's the code I used :
private final OkHttpClient client = new OkHttpClient();
JSONObject jsonObj = new JSONObject();
try{
jsonObj.put("imei",number);
jsonObj.put("longitude", number);
jsonObj.put("latitude", number);
jsonObj.put("speed", number);
jsonObj.put("battery", number);
jsonObj.put("date", date);
jsonObj.put("error", number);
jsonObj.put("acceleroVal", number);
jsonObj.put("apn", string);
} catch (JSONException e) {
e.printStackTrace();
}
String json = jsonObj.toString();
RequestBody.create(json, MediaType.parse("application/json; charset=utf-8"));
RequestBody formBody = new FormBody.Builder()
.build();
Request request = new Request.Builder()
.url("http://xxxx.com:2000/api/xxx")
.put(formBody)
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(#NonNull Call call, #NonNull IOException e) {
e.printStackTrace();
}
#Override
public void onResponse(#NonNull Call call, #NonNull Response response) throws IOException {
if(response.isSuccessful()) {
ResponseBody responseBody = response.body();
}
any help is appreciated, feel free to adjust the code.
I'm using retrofit and I need to upload and image, but I'm getting status code 400.
Here's the code.
This is the interface.
public interface SupportInterface {
//Get request for sending photo in chat
#Multipart
#POST("/api/upload-image")
Call<ResponseBody> getChatPhoto(#Header("Content-Type") String json,
#Header("Authorization") String token,
#Header("Cache-Control") String cache,
#Part("type") String type,
#Part("user_id") String userId,
#Part MultipartBody.Part image_path);
}
I'm using headers + I need to send user_id and type too. So I'm using #Part. I done right yes?
Here's the retrofit in initialization part.
public class ApiClient {
private static ApiClient instance;
OkHttpClient.Builder client = new OkHttpClient.Builder()
.readTimeout(10, TimeUnit.SECONDS)
.connectTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS);
client.addInterceptor(new Interceptor() {
#Override
public Response intercept(#NonNull Chain chain) throws IOException {
Request request = chain.request();
request = request.newBuilder()
.header("Cache-Control", "public, max-age=0")
.build();
return chain.proceed(request);
}
});
supportopApi = new Retrofit.Builder()
.baseUrl(endpoint)
.client(client.build())
.addConverterFactory(GsonConverterFactory.create())
.build()
.create(SupportopApi.class);
}
public Call<ResponseBody> getChatImage(MultipartBody.Part multipartBody) {
return supportopApi.getChatPhoto("application/json", There is my accessToken,
"no-cache", "5", This is userID, multipartBody);
}
}
If I done here something wrong please tell me.
And here's the main part.
public void getChatImage() {
File file = new File("/storage/emulated/0/Download/s-l640.jpg");
RequestBody reqFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);
MultipartBody.Part multiPartFile = MultipartBody.Part.createFormData("image", file.getName(), reqFile);
Call<ResponseBody> chatImageCall = apiClient.getChatImage(multiPartFile);
chatImageCall.enqueue(new Callback<ResponseBody>() {
#Override
public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
if (response.isSuccessful()) {
try {
Log.d(TAG, response.body().string());
} catch (IOException e) {
e.printStackTrace();
}
} else {
Toast.makeText(context, "Response is not successful: " + response.errorBody(), Toast.LENGTH_SHORT).show();
}
}
#Override
public void onFailure(Call<ResponseBody> call, Throwable t) {
Toast.makeText(getActivity(), "An error occurred", Toast.LENGTH_SHORT).show();
}
});
}
I'm getting here bad request 400.
#Header("Content-Type") String json
You declare your content type is JSON but actually you pass to server the multipart (form data)
So I think you're trying to do:
#Header("Accept") String json
(accept JSON from server)
I am trying to remove the HttpClient api from my Android project and to transition to using HttpURLConnection.
In the old API, I made use of HttpRequestExecutor, to change some icon in the notification bar when the app is downloading vs uploading
this.httpclient = new DefaultHttpClient(httpParameters){
#Override
protected HttpRequestExecutor createRequestExecutor() {
return new HttpRequestExecutor(){
#Override
protected HttpResponse doSendRequest(HttpRequest request,
HttpClientConnection conn, HttpContext http_context)
throws IOException, HttpException {
EventsBroadcaster.broadcastConnectionUploading(context);
return super.doSendRequest(request, conn, http_context);
}
#Override
protected HttpResponse doReceiveResponse(
HttpRequest request, HttpClientConnection conn,
HttpContext http_context) throws HttpException,
IOException {
EventsBroadcaster.broadcastConnectionDownloading(context);
return super.doReceiveResponse(request, conn, http_context);
}
};
}
};
How can I do the same with HttpURLConnection?
`OkHttpClient client = new OkHttpClient();
MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "Your Body");
Request request = new Request.Builder()
.url("Your url")
.post(body)
.addHeader("add as many add headers as u want")
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(#NotNull Call call, #NotNull IOException e) {
//What should happen if failed
}
#Override
public void onResponse(#NotNull Call call, #NotNull Response response) throws IOException {
//what should happen if it is successful
}
}); `
I am using OKHttp to perform Post request to server, as follow:
public class NetworkManager {
public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
OkHttpClient client = new OkHttpClient();
String post(String url, JSONObject json) throws IOException {
try {
JSONArray array = json.getJSONArray("d");
RequestBody body = new FormEncodingBuilder()
.add("m", json.getString("m"))
.add("d", array.toString())
.build();
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
Response response = client.newCall(request).execute();
return response.body().string();
} catch (JSONException jsone) {
return "ERROR: " + jsone.getMessage();
}
}
}
and call it with:
NetworkManager manager = new NetworkManager();
String response = manager.post("http://www.example.com/api/", jsonObject);
When I try to run the App, it prompts an error in the logcat:
android.os.NetworkOnMainThreadException
at
android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273)
With reference to other questions in SO, I added this to override the policy:
if (android.os.Build.VERSION.SDK_INT > 9)
{
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
Yet I think this is unhealthy and I would like to put the NetworkManager actions to background. How can I do so?
Since OkHttp supports async way too, so IMO you can refer to the following GET request sample, then apply for your POST request:
OkHttpClient client = new OkHttpClient();
// GET request
Request request = new Request.Builder()
.url("http://google.com")
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Request request, IOException e) {
Log.e(LOG_TAG, e.toString());
}
#Override
public void onResponse(Response response) throws IOException {
Log.w(LOG_TAG, response.body().string());
Log.i(LOG_TAG, response.toString());
}
});
Hope it helps!