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HttpURLConnection with JSON on Android 9, API 28 [duplicate]

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2

This question already has an answer here:

• 
  How to allow all Network connection types HTTP and HTTPS in Android (9) Pie?
  
  6 answers
  
  

I'm trying to use HttpURLConnection in Android 9, API 28. It works on Android 8.0.0, API 26, but not on API 28.

 JSONObject jsonObject = new JSONObject();
 jsonObject.accumulate("name", name);
 String json = jsonObject.toString();

 URL url = new URL("http://website_link");
 HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
 urlConnection.setDoOutput(true);
 urlConnection.setRequestMethod("POST");
 urlConnection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");

 OutputStream os = urlConnection.getOutputStream();
 os.write(json.getBytes("UTF-8"));
 os.close();

 InputStream inputStream = new BufferedInputStream(urlConnection.getInputStream());
 BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, Charset.forName("utf-8")), 8);
 String line;
 json = "";

 while ((line = reader.readLine()) != null) 
 json += line;
 

 inputStream.close();

 jsonObject = new JSONObject(json);

 inputStream.close();
 urlConnection.disconnect();

 ...

I tried to use Log.d to see what code is not executed and I saw that it stops on OutputStream os = urlConnection.getOutputStream();

Do you know where is the problem?

java android json httpurlconnection

share|improve this question

asked Mar 27 at 21:20

user3566569user3566569

4411 silver badge77 bronze badges

marked as duplicate by Michał Ziober, tir38, gdlmx, Matteo Baldi, Mạnh Quyết Nguyễn Mar 28 at 10:22

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  How is this "not working"? Crash? Unexpected behavior?
  
  – tir38
  Mar 28 at 2:21
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  As I wrote it stops on OutputStream os = urlConnection.getOutputStream();. That part is not executed and nothing happens, app doesn't crash, just that part is not executed.
  
  – user3566569
  Mar 28 at 13:09
  

  
  
  
  

add a comment | 

2

This question already has an answer here:

• 
  How to allow all Network connection types HTTP and HTTPS in Android (9) Pie?
  
  6 answers
  
  

I'm trying to use HttpURLConnection in Android 9, API 28. It works on Android 8.0.0, API 26, but not on API 28.

 JSONObject jsonObject = new JSONObject();
 jsonObject.accumulate("name", name);
 String json = jsonObject.toString();

 URL url = new URL("http://website_link");
 HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
 urlConnection.setDoOutput(true);
 urlConnection.setRequestMethod("POST");
 urlConnection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");

 OutputStream os = urlConnection.getOutputStream();
 os.write(json.getBytes("UTF-8"));
 os.close();

 InputStream inputStream = new BufferedInputStream(urlConnection.getInputStream());
 BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, Charset.forName("utf-8")), 8);
 String line;
 json = "";

 while ((line = reader.readLine()) != null) 
 json += line;
 

 inputStream.close();

 jsonObject = new JSONObject(json);

 inputStream.close();
 urlConnection.disconnect();

 ...

I tried to use Log.d to see what code is not executed and I saw that it stops on OutputStream os = urlConnection.getOutputStream();

Do you know where is the problem?

java android json httpurlconnection

share|improve this question

asked Mar 27 at 21:20

user3566569user3566569

4411 silver badge77 bronze badges

marked as duplicate by Michał Ziober, tir38, gdlmx, Matteo Baldi, Mạnh Quyết Nguyễn Mar 28 at 10:22

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  How is this "not working"? Crash? Unexpected behavior?
  
  – tir38
  Mar 28 at 2:21
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  As I wrote it stops on OutputStream os = urlConnection.getOutputStream();. That part is not executed and nothing happens, app doesn't crash, just that part is not executed.
  
  – user3566569
  Mar 28 at 13:09
  

  
  
  
  

add a comment | 

This question already has an answer here:

• 
  How to allow all Network connection types HTTP and HTTPS in Android (9) Pie?
  
  6 answers
  
  

I'm trying to use HttpURLConnection in Android 9, API 28. It works on Android 8.0.0, API 26, but not on API 28.

 JSONObject jsonObject = new JSONObject();
 jsonObject.accumulate("name", name);
 String json = jsonObject.toString();

 URL url = new URL("http://website_link");
 HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
 urlConnection.setDoOutput(true);
 urlConnection.setRequestMethod("POST");
 urlConnection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");

 OutputStream os = urlConnection.getOutputStream();
 os.write(json.getBytes("UTF-8"));
 os.close();

 InputStream inputStream = new BufferedInputStream(urlConnection.getInputStream());
 BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, Charset.forName("utf-8")), 8);
 String line;
 json = "";

 while ((line = reader.readLine()) != null) 
 json += line;
 

 inputStream.close();

 jsonObject = new JSONObject(json);

 inputStream.close();
 urlConnection.disconnect();

 ...

I tried to use Log.d to see what code is not executed and I saw that it stops on OutputStream os = urlConnection.getOutputStream();

Do you know where is the problem?

java android json httpurlconnection

share|improve this question

asked Mar 27 at 21:20

user3566569user3566569

4411 silver badge77 bronze badges

 JSONObject jsonObject = new JSONObject();
 jsonObject.accumulate("name", name);
 String json = jsonObject.toString();

 URL url = new URL("http://website_link");
 HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
 urlConnection.setDoOutput(true);
 urlConnection.setRequestMethod("POST");
 urlConnection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");

 OutputStream os = urlConnection.getOutputStream();
 os.write(json.getBytes("UTF-8"));
 os.close();

 InputStream inputStream = new BufferedInputStream(urlConnection.getInputStream());
 BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, Charset.forName("utf-8")), 8);
 String line;
 json = "";

 while ((line = reader.readLine()) != null) 
 json += line;
 

 inputStream.close();

 jsonObject = new JSONObject(json);

 inputStream.close();
 urlConnection.disconnect();

 ...

java android json httpurlconnection

java android json httpurlconnection

share|improve this question

asked Mar 27 at 21:20

user3566569user3566569

4411 silver badge77 bronze badges

share|improve this question

asked Mar 27 at 21:20

user3566569user3566569

4411 silver badge77 bronze badges

asked Mar 27 at 21:20

user3566569user3566569

4411 silver badge77 bronze badges

asked Mar 27 at 21:20

user3566569user3566569

4411 silver badge77 bronze badges

2 Answers
2

active

oldest

votes

1

Try this add Manifest.xml

cleartextTrafficPermitted="true"

it look like this
How to allow all Network connection types HTTP and HTTPS in Android (9) Pie?

share|improve this answer

edited Jul 5 at 11:52

answered Mar 27 at 21:43

Hasan KucukHasan Kucuk

51711 gold badge44 silver badges2020 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you, I added android:usesCleartextTraffic="true" in application tag inside AndroidManifest.xml and it works!
  
  – user3566569
  Mar 27 at 22:04
  

  
  
  
  

add a comment | 

0

This is because of Apache HTTP client depreciation ,
So add the below line in
tag.

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

share|improve this answer

answered Mar 27 at 22:15

Saurav KumarSaurav Kumar

13677 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried to add that tag and it didn't worked. Solution by Hasan Kucuk to add cleartextTrafficPermitted="true" worked.
  
  – user3566569
  Mar 27 at 22:20
  

  
  
  
  

add a comment | 

1

Try this add Manifest.xml

cleartextTrafficPermitted="true"

it look like this
How to allow all Network connection types HTTP and HTTPS in Android (9) Pie?

share|improve this answer

edited Jul 5 at 11:52

answered Mar 27 at 21:43

Hasan KucukHasan Kucuk

51711 gold badge44 silver badges2020 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you, I added android:usesCleartextTraffic="true" in application tag inside AndroidManifest.xml and it works!
  
  – user3566569
  Mar 27 at 22:04
  

  
  
  
  

add a comment | 

1

Try this add Manifest.xml

cleartextTrafficPermitted="true"

it look like this
How to allow all Network connection types HTTP and HTTPS in Android (9) Pie?

share|improve this answer

edited Jul 5 at 11:52

answered Mar 27 at 21:43

Hasan KucukHasan Kucuk

51711 gold badge44 silver badges2020 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you, I added android:usesCleartextTraffic="true" in application tag inside AndroidManifest.xml and it works!
  
  – user3566569
  Mar 27 at 22:04
  

  
  
  
  

add a comment | 

Try this add Manifest.xml

cleartextTrafficPermitted="true"

it look like this
How to allow all Network connection types HTTP and HTTPS in Android (9) Pie?

share|improve this answer

edited Jul 5 at 11:52

answered Mar 27 at 21:43

Hasan KucukHasan Kucuk

51711 gold badge44 silver badges2020 bronze badges

cleartextTrafficPermitted="true"

share|improve this answer

edited Jul 5 at 11:52

answered Mar 27 at 21:43

Hasan KucukHasan Kucuk

51711 gold badge44 silver badges2020 bronze badges

answered Mar 27 at 21:43

Hasan KucukHasan Kucuk

51711 gold badge44 silver badges2020 bronze badges

answered Mar 27 at 21:43

Hasan KucukHasan Kucuk

51711 gold badge44 silver badges2020 bronze badges

0

This is because of Apache HTTP client depreciation ,
So add the below line in
tag.

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

share|improve this answer

answered Mar 27 at 22:15

Saurav KumarSaurav Kumar

13677 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried to add that tag and it didn't worked. Solution by Hasan Kucuk to add cleartextTrafficPermitted="true" worked.
  
  – user3566569
  Mar 27 at 22:20
  

  
  
  
  

add a comment | 

0

This is because of Apache HTTP client depreciation ,
So add the below line in
tag.

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

share|improve this answer

answered Mar 27 at 22:15

Saurav KumarSaurav Kumar

13677 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried to add that tag and it didn't worked. Solution by Hasan Kucuk to add cleartextTrafficPermitted="true" worked.
  
  – user3566569
  Mar 27 at 22:20
  

  
  
  
  

add a comment | 

This is because of Apache HTTP client depreciation ,
So add the below line in
tag.

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

share|improve this answer

answered Mar 27 at 22:15

Saurav KumarSaurav Kumar

13677 bronze badges

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

share|improve this answer

answered Mar 27 at 22:15

Saurav KumarSaurav Kumar

13677 bronze badges

answered Mar 27 at 22:15

Saurav KumarSaurav Kumar

13677 bronze badges

answered Mar 27 at 22:15

Saurav KumarSaurav Kumar

13677 bronze badges