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
}
}); `
Related
I'm trying to add a header to a simple okhttp (Get) request. How do I add the HttpHeader properly? Can I debug to ensure that my Header is actually sent to the server?
Request request = new Request.Builder()
.url("URL")
.build();
OkHttpClient okHttpClient = new OkHttpClient.Builder()
.addInterceptor(new Interceptor() {
#Override
public okhttp3.Response intercept(Chain chain) throws IOException {
Request originalRequest = chain.request();
Request newRequest = originalRequest.newBuilder()
.addHeader("Header", "123")
.build();
return chain.proceed(newRequest);
}
})
.build();
okHttpClient.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
}
I've looked for basic simple examples but they are with Retrofit, GSON, Interfaces, or in Kotlin. Need to understand it codewise.
You can use by method addHeader send chain as param and add headers.
Request getRequest = chain.request();
Request.Builder requestBuilder = getRequest.newBuilder()
.addHeader("Header", "123");
Request request = requestBuilder.build();
return chain.proceed(request);
You can also visit and look at the answers link1 and link2.
Here is the all-request Structure you can use.
OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
httpClient.addInterceptor(new Interceptor() {
#Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request original = chain.request();
Request request = original.newBuilder()
.method(original.method(), original.body())
.build();
return chain.proceed(request);
}
};
OkHttpClient client = httpClient.build();
Request request = new Request.Builder()
.url("URL")
.addHeader("Header", "123")
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
Log.d("OKHTTP3", e.getMessage());
// You get this failure
runOnUiThread(() -> {
});
}
#Override
public void onResponse(Call call, Response response) throws IOException {
try {
final String _body = response.body().string();
Log.d("OKHTTP3", _body);
runOnUiThread(() -> {
});
} catch (InterruptedIOException e) {
runOnUiThread(() -> {
// Or this exception depending when timeout is reached
});
}
}
});
To check your request and to add headers, you can use interceptors.
To add headers, (copied from gist):
OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
httpClient.addInterceptor(new Interceptor() {
#Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request original = chain.request();
Request request = original.newBuilder()
.header("User-Agent", "Your-App-Name")
.header("Accept", "application/vnd.yourapi.v1.full+json")
.method(original.method(), original.body())
.build();
return chain.proceed(request);
}
}
OkHttpClient client = httpClient.build();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(API_BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.client(client)
.build();
To see your headers, you can use sample example provided here:
class LoggingInterceptor implements Interceptor {
#Override public Response intercept(Interceptor.Chain chain) throws IOException {
Request request = chain.request();
long t1 = System.nanoTime();
logger.info(String.format("Sending request %s on %s%n%s",
request.url(), chain.connection(), request.headers()));
Response response = chain.proceed(request);
long t2 = System.nanoTime();
logger.info(String.format("Received response for %s in %.1fms%n%s",
response.request().url(), (t2 - t1) / 1e6d, response.headers()));
return response;
}
}
Use addHeader() to add headers. header() sets the already added header name to the value.
Request newRequest = originalRequest.newBuilder()
.addHeader("Header", "123")
.build();
And to verify it's working correctly, you can use HttpLoggingInterceptor to log your network requests.
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
}
});
}
}
});
}
I am sending multiple images using OkHTTP. Since all the requests are asynchronous, I cannot run my final call until all the requests are done. How can I achieve this in OkHTTP?
I need to run my RunFinalRequest() after all the images have been sent. What I tried is, I put the my RunFinalRequest() on OnResponse() but it sometimes doesn't go through even though there is a response. Is there a better way to do it?
Here is my code:
public void SendALL(){
OkHttpClient client = new OkHttpClient();
client.dispatcher().setMaxRequestsPerHost(50);
final MediaType MEDIA_TYPE = MediaType.parse("image/png");
for (int i = 0; i < images.size(); i++){
File sourceFile = new File(images.get(i).getImageURI());
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("image", sourceFile.getName(), RequestBody.create(MEDIA_TYPE, sourceFile))
.addFormDataPart("name", images.get(i).getJobID())
.build();
Request request = new Request.Builder()
.url("xxxxxxxxxxx")
.post(requestBody)
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
}
#Override
public void onResponse(Call call, Response response) throws IOException {
}
});
}
if(signatures.size() > 0){
File sourceFile = new File(Uri.parse(signatures.get(0).getImageURI()).toString());
String newJobID = signatures.get(0).getJobID().concat("-signature");
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("image", sourceFile.getName(), RequestBody.create(MEDIA_TYPE, sourceFile))
.addFormDataPart("name", newJobID)
.build();
Request request = new Request.Builder()
.url("XXXXXXXXXXX")
.post(requestBody)
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
}
#Override
public void onResponse(Call call, Response response) throws IOException {
}
});
}
RunFinalRequest();
You may try following mechanism:
private int uploadedImageCount;
...
public void sendAll() {
uploadedImageCount = 0;
OkHttpClient client = new OkHttpClient();
client.dispatcher().setMaxRequestsPerHost(50);
MediaType MEDIA_TYPE = MediaType.parse("image/png");
for (int i = 0; i < images.size(); i++) {
File sourceFile = new File(images.get(i).getImageURI());
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("image", sourceFile.getName(), RequestBody.create(MEDIA_TYPE, sourceFile))
.addFormDataPart("name", images.get(i).getJobID())
.build();
Request request = new Request.Builder()
.url("xxxxxxxxxxx")
.post(requestBody)
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
onImageUploadFailed();
}
#Override
public void onResponse(Call call, Response response) throws IOException {
if (response.isSuccessful()) {
onImageUploaded();
} else {
onImageUploadFailed();
}
}
});
}
if (signatures.size() > 0) {
File sourceFile = new File(Uri.parse(signatures.get(0).getImageURI()).toString());
String newJobID = signatures.get(0).getJobID().concat("-signature");
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("image", sourceFile.getName(), RequestBody.create(MEDIA_TYPE, sourceFile))
.addFormDataPart("name", newJobID)
.build();
Request request = new Request.Builder()
.url("XXXXXXXXXXX")
.post(requestBody)
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
}
#Override
public void onResponse(Call call, Response response) throws IOException {
}
});
}
}
public void onImageUploaded() {
uploadedImageCount++;
if (uploadedImageCount == images.size()) {
runFinalRequest();
}
}
public void onImageUploadFailed() {
// Handle failure case. You may detect failed image and try to resend
}
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!
I have an http url:
HttpUrl httpurl = new HttpUrl.Builder()
.scheme("https")
.host("www.google.com")
.addPathSegment("search")
.addQueryParameter("q", "polar bears")
.build();
How do I use that with a request? That is, how do I send a request to the url constructed by httpurl?
Use Request.Builder#url(HttpUrl):
Request r = new Request.Builder()
.url(httpurl).build();
Then follow here.
Try this:
Request request = new Request.Builder()
.method(method, requestBody)
.url(httpurl)
.addHeader(headerName, headerValue);
.build();
OkHttpClient client = new OkHttpClient();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Request request, IOException e) {
}
#Override
public void onResponse(Response response) throws IOException {
}
});