How to Save JSON in String variable using JAVA In Android?

Question

i am newbie in android Here is JSON defined, i need to manually store this JSON in String variable using JAVA in Android.I am getting diffculty to do this.here is the code i have tried but its not correct.

 String jsonObject = "{


        {
                      "id": 22,
                      "menu_id": 1,
                      "field_type_id": 1,
                      "c4w_code": "1234",
                      "field_label": "Customer No",
                      "field_values": "",
                      "date_Created": "2012-09-16 05:11:23",
                      "date_modified": "2013-11-20 10:33:23",
                      "is_required": 0,
                      "is_static": 1,
                      "field_order": 1
        },
        {
                      "id": 23,
                      "menu_id": 1,
                      "field_type_id": 1,
                      "c4w_code": "1234",
                      "field_label": "Company Name",
                      "field_values": "",
                      "date_Created": "2012-09-16 05:11:56",
                      "date_modified": "2013-11-20 10:33:23",
                      "is_required": 1,
                      "is_static": 1,
                      "field_order": 3
        }

}";

i need to store it either in String or in JSONObject so that i can move a head to work with this. after adding code :

MenuFields menuFieldInstance[];// an array of bean Class
Gson gson = new Gson();
 String jsonObjectString ="{\n\n\n {\n \"id\": 22,\n \"menu_id\": 1,\n \"field_type_id\": 1,\n \"c4w_code\": \"1234\",\n \"field_label\": \"Customer No\",\n \"field_values\": \"\",\n \"date_Created\": \"2012-09-16 05:11:23\",\n \"date_modified\": \"2013-11-20 10:33:23\",\n \"is_required\": 0,\n \"is_static\": 1,\n \"field_order\": 1\n },\n {\n \"id\": 23,\n \"menu_id\": 1,\n \"field_type_id\": 1,\n \"c4w_code\": \"1234\",\n \"field_label\": \"Company Name\",\n \"field_values\": \"\",\n \"date_Created\": \"2012-09-16 05:11:56\",\n \"date_modified\": \"2013-11-20 10:33:23\",\n \"is_required\": 1,\n \"is_static\": 1,\n \"field_order\": 3\n }\n\n}";
     @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        context = this;
                menuFieldInstance = gson.fromJson(jsonObjectString,MenuFields[].class);
           for(int i=0;i<jsonObjectString.length();i++)
           {
               Log.i("menuField Instance ",""+menuFieldInstance[i].getId());
           }
        }

i am getting this logCat:

12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): 12-30 22:56:47.745: E/AndroidRuntime(2238): FATAL EXCEPTION: AsyncTask #3 java.lang.RuntimeException: An error occured while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:299) at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273) at java.util.concurrent.FutureTask.setException(FutureTask.java:124) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307) at java.util.concurrent.FutureTask.run(FutureTask.java:137) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) at java.lang.Thread.run(Thread.java:856) Caused by: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 at com.google.gson.Gson.fromJson(Gson.java:815) at com.google.gson.Gson.fromJson(Gson.java:768) at com.google.gson.Gson.fromJson(Gson.java:717) at com.google.gson.Gson.fromJson(Gson.java:689) at com.survey.management.activity.MainActivity$RequestForCustomerMenuFields.getCustomerMenuFieldsData(MainActivity.java:480) at com.survey.management.activity.MainActivity$RequestForCustomerMenuFields.doInBackground(MainActivity.java:456) at com.survey.management.activity.MainActivity$RequestForCustomerMenuFields.doInBackground(MainActivity.java:1) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) ... 5 more Caused by: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 at com.google.gson.stream.JsonReader.beginArray(JsonReader.java:338) at com.google.gson.internal.bind.ArrayTypeAdapter.read(ArrayTypeAdapter.java:70) at com.google.gson.Gson.fromJson(Gson.java:803) ... 13 more

can someone please guide me any tutorial so that i can store json in string or in jsonObject — nida, Dec 30 '13 at 06:25
First of all, it's not a valid JSON, try it at http://json.parser.online.fr/ — giampaolo, Dec 30 '13 at 06:26
Read at http://stackoverflow.com/questions/3559063/how-to-enter-quotes-in-a-string — Pankaj Kumar, Dec 30 '13 at 06:28
read your error: "Expected BEGIN_ARRAY but was BEGIN_OBJECT". Then read json specs: http://json.org — njzk2, Oct 24 '16 at 18:51

score 10 · Accepted Answer · edited Oct 24 '16 at 18:50

10

You need to replace all your (double quotes) " to \" to compile the String object in java.

Use the below string:

String jsonObject ="{\n\n\n {\n \"id\": 22,\n\"menu_id\": 1,\n \"field_type_id\": 1,\n\"c4w_code\": \"1234\",\n\"field_label\": \"Customer No\",\n\"field_values\": \"\",\n\"date_Created\": \"2012-09-16 05:11:23\",\n\"date_modified\": \"2013-11-20 10:33:23\",\n\"is_required\":0,\n\"is_static\": 1,\n\"field_order\": 1\n},\n{\n\"id\":23,\n\"menu_id\": 1,\n\"field_type_id\": 1,\n\"c4w_code\": \"1234\",\n\"field_label\": \"Company Name\",\n\"field_values\": \"\",\n\"date_Created\": \"2012-09-16 05:11:56\",\n\"date_modified\": \"2013-11-20 10:33:23\",\n\"is_required\": 1,\n\"is_static\": 1,\n\"field_order\": 3\n}\n\n}";

edited Oct 24 '16 at 18:50

09Q71AO534

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answered Dec 30 '13 at 06:26

Kailash Dabhi

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i am getting this exception when trying to put it in my Bean Array Class : 12-30 22:56:47.745: E/AndroidRuntime(2238): Caused by: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 12-30 22:56:47.745: E/AndroidRuntime(2238): at com.google.gson.Gson.fromJson(Gson.java:815) the code i have added in edit please see this. – nida Dec 30 '13 at 07:11
remove first and last bracket i.e'{' and replace it by '[' – Kailash Dabhi Dec 30 '13 at 08:11
And put the json in one single line. – julianm Apr 03 '18 at 15:21

score 1 · Answer 2 · edited Oct 21 '16 at 07:06

1

Worked like a charm!!!

String jsonObject="{   {\"Filter\": \"No\",\"Data Type\": \"Aggregated\", \"Key-Fields\": \"Application IP, Client IP, Protocol, Application Port, Client Port\",\"Metric-fields\": \"Bandwidth, Packets\", \"Filter\":\"Enable\"   } }";

edited Oct 21 '16 at 07:06

09Q71AO534

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13
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answered Oct 21 '16 at 04:53

Abhishek Bhardwaj

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score 0 · Answer 3 · answered Dec 30 '13 at 06:26

0

replace all your doublequote (") with (\") and it will work.

answered Dec 30 '13 at 06:26

Adhikari Bishwash

2,770
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How to Save JSON in String variable using JAVA In Android?

3 Answers3