How can I generate a POJO file for this JSON response for auto-deserialization? - android

I get a JSON response like this from a server:
{
"name_1": [
{
"id": 1,
"type": 1,
"value": "25"
},
{
"id": 2,
"type": 2,
"value": "25"
}
],
"name_2": [
{
"id": 3,
"type": 1,
"value": "25"
},
{
"id": 6,
"type": 4,
"value": "25"
},
{
"id": 7,
"type": 4,
"value": "25"
}
],
"name_3": [
{
"id": 8,
"type": 1,
"value": "25"
}
]
}
How can I generate a POJO file for this in order to use it for auto-deserializing with retrofit?
I tried www.jsonschema2pojo.org, but it wants to create a new class for each JSON object, which is a list (name_1, name_2, name_3), but the count of "name_X" arrays could be different, as well as ther names.
So how can I create a POJO java class for auto-deserializing with GsonConverterFactory in retrofit?
Thanks! :)


You can use Map<String,List<YourObject>> where YourObject contains the id, type and value.
So, response should be :
public class YourObject {
public Map<String, NameDetail> nameDetail;
}
public class NameDetail {
public int id;
public int type;
public String value;
}
And your service with retrofit should return :
Call<YourObject> getStuff();


Your JSON structure is wrong. You should have something like this in order to get list of names:
{
"names" : [
{
"name": "name_1",
"values": [
{
"id": 1,
"type": 1,
"value": "25"
},
{
"id": 2,
"type": 2,
"value": "25"
}
]
},
{
"name": "name_2",
"values": [
{
"id": 3,
"type": 1,
"value": "25"
},
{
"id": 6,
"type": 4,
"value": "25"
},
{
"id": 7,
"type": 4,
"value": "25"
}
]
},
{
"name": "name_3",
"values": [
{
"id": 8,
"type": 1,
"value": "25"
}
]
}
]}
Or if you can't affect server-side then use HashMap<String,List<T>> like Skizo-ozᴉʞS said but it would be the best to change the structure.

Related

Retrofit Android API Get without nested array

This is my first android project (I'm a php developer) but i'm struggling to see how to take this example which uses a nested structure under data for the json array whereas my data is not double nested like this example.
The excample code I am trying to modify is from here https://github.com/datanapps/RetrofitKotlin and the key differences in the json are todo with the nesting.
Original
{
"page": 1,
"per_page": 6,
"total": 12,
"total_pages": 2,
"data": [
{
"id": 1,
"email": "george.bluth#reqres.in",
"first_name": "George",
"last_name": "Bluth",
"avatar": "https://reqres.in/img/faces/1-image.jpg"
},
{
"id": 2,
"email": "james.smith#reqres.in",
"first_name": "James",
"last_name": "Smith",
"avatar": "https://reqres.in/img/faces/1-image.jpg"
}
]
}
whereas mine is simply
[
{
"_id": "62f4cb4e131d9d00046a1b9c",
"device": "AndroidAPS-DexcomG6",
"date": 1660209967000,
"dateString": "2022-08-11T09:26:07.000Z",
"isValid": true,
"sgv": 133,
"direction": "Flat",
"type": "sgv",
"created_at": "2022-08-11T09:26:38.326Z",
"mills": 1660209998326
},
{
"_id": "62f4cb4e131d9d00046a1b9c",
"device": "AndroidAPS-DexcomG6",
"date": 1660209967000,
"dateString": "2022-08-11T09:26:07.000Z",
"isValid": true,
"sgv": 133,
"direction": "Flat",
"type": "sgv",
"created_at": "2022-08-11T09:26:38.326Z",
"mills": 1660209998326
}
]
Specifically I want to query the SGV values, direction and date
Thanks

You "return type" of "method" in Retrofit "interface" will be:
List<MyModel>
And MyModel:
data class MyModel(val _id:String, val device:String,...)

How to flatten polymorphic lists with Moshi deserialization

I'm trying to flatten the following Json
[
{
"type": 1,
"field": ""
},
{
"type": 2,
"field": "",
"other_field": ""
},
{
"type": 3,
"field": "",
"list_field": [
{
"type": 4,
"some_field": ""
},
{
"type": 4,
"some_field": ""
}
]
}
]
what I'd like to obtain is the following structure:
[
{
"type": 1,
"field": ""
},
{
"type": 2,
"field": "",
"other_field": ""
},
{
"type": 3,
"field": ""
},
{
"type": 4,
"some_field": ""
},
{
"type": 4,
"some_field": ""
}
]
Since all the items inherit from the same parent class I tried both PolymorphicJsonAdapterFactory and a custom JsonAdapter.Factory but without success.
Is there a way to do that in Moshi?

ObjectBox - DBException coming due to UID mismatching

I am using Objectbox as an ORM in my application and getting dbexception due to mismatching UID, when I added some extra properties in one of my entity. As I went through the documentation where it is mentioned that if we add or remove properties in your entities objectbox will take care of the changes. But it's not happening in my case. Please have a look at my log stash, entities and default.json once and let me know what could be the possible solution to resolve this issue.
ObjectBox version: v1.2.0
Logs
Caused by: io.objectbox.exception.DbException: Incoming entity ID 8:7509306813647547019 does not match existing UID 8172185837942255744
at io.objectbox.BoxStore.nativeCreate(Native Method)
at io.objectbox.BoxStore.<init>(BoxStore.java:187)
at io.objectbox.BoxStoreBuilder.build(BoxStoreBuilder.java:259)
at com.letsdogether.dogether.dagger.module.ObjectModule.<init>(ObjectModule.java:34)
at com.letsdogether.dogether.newDogetherHome.DogetherApplication.loadObjectsComponent(DogetherApplication.java:104)
at com.letsdogether.dogether.newDogetherHome.DogetherApplication.onCreate(DogetherApplication.java:79)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1018)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4969)
at android.app.ActivityThread.-wrap1(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1559)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5750)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
Entities
Previously my entity looks like this:
#Entity
public class BookingItem {
private long id;
#Id(assignable = true)
private long priority;
private String date;
private String formattedAddress;
private String orderId;
private String type;
private String title;
private int seatCount;
private String pricePerPerson;
private String time;
private String day;
private String redirectUrl;
private String status;
private long experienceId;
private String shareableUrl;
private ToOne<Image> image;
private ToOne<FeedElement> feedElementToOne;
}
and my default.json looks like this:
{
"_note1": "KEEP THIS FILE! Check it into a version control system (VCS) like git.",
"_note2": "ObjectBox manages crucial IDs for your object model. See docs for details.",
"_note3": "If you have VCS merge conflicts, you must resolve them according to ObjectBox docs.",
"entities": [
{
"id": "1:4340630284304338974",
"lastPropertyId": "8:4962045346664663063",
"name": "BaseExperience",
"properties": [
{
"id": "1:647607068638902600",
"name": "id"
},
{
"id": "2:2702040841419862055",
"name": "actualId"
},
{
"id": "3:3033280429430892352",
"name": "avgRating"
},
{
"id": "4:7218439493883955972",
"name": "customerReviewsCount"
},
{
"id": "5:80984715122814807",
"name": "pricePerPerson"
},
{
"id": "6:3883498391107289246",
"name": "title"
},
{
"id": "7:8998466498535731699",
"indexId": "1:1765637542740785127",
"name": "videoId"
},
{
"id": "8:4962045346664663063",
"indexId": "2:2040540235098101863",
"name": "feedToOneId"
}
],
"relations": []
},
{
"id": "2:7267925106594307597",
"lastPropertyId": "17:4933883640820962465",
"name": "BookingItem",
"properties": [
{
"id": "1:2843152350771579539",
"name": "id"
},
{
"id": "2:3864807135625693365",
"name": "priority"
},
{
"id": "3:2811475968058126998",
"name": "date"
},
{
"id": "4:5994267266359962076",
"name": "formattedAddress"
},
{
"id": "5:8101006061974386478",
"name": "orderId"
},
{
"id": "6:5927620191588993112",
"name": "type"
},
{
"id": "7:6885331133485554648",
"name": "title"
},
{
"id": "8:1499199287986398172",
"name": "seatCount"
},
{
"id": "9:2504021269483806060",
"name": "pricePerPerson"
},
{
"id": "10:7281235595111103399",
"name": "time"
},
{
"id": "11:6617722497399396474",
"name": "day"
},
{
"id": "12:2473985422221126897",
"name": "redirectUrl"
},
{
"id": "13:2904830306792476987",
"name": "status"
},
{
"id": "14:2181195403266779204",
"name": "experienceId"
},
{
"id": "15:3018070061889416768",
"name": "shareableUrl"
},
{
"id": "16:6444561946554419063",
"indexId": "3:1705820361334358507",
"name": "imageId"
},
{
"id": "17:4933883640820962465",
"indexId": "4:3744949801364672550",
"name": "feedElementToOneId"
}
],
"relations": []
},
{
"id": "3:160108942376228999",
"lastPropertyId": "6:8550232341754154098",
"name": "Feed",
"properties": [
{
"id": "1:1692860121377933562",
"name": "id"
},
{
"id": "2:8854384643059958161",
"name": "type"
},
{
"id": "3:7664556112391884481",
"name": "title"
},
{
"id": "4:5817245497381540954",
"name": "seeAll"
},
{
"id": "5:2317329177962315800",
"name": "feedType"
},
{
"id": "6:8550232341754154098",
"indexId": "5:680938987943440350",
"name": "feedElementToOneId"
}
],
"relations": []
},
{
"id": "4:7537217652864317597",
"lastPropertyId": "3:6112954104554042430",
"name": "FeedElement",
"properties": [
{
"id": "1:4926947771749822767",
"name": "id"
},
{
"id": "2:8131453946945993591",
"name": "nextUrl"
},
{
"id": "3:6112954104554042430",
"name": "feedElementType"
}
],
"relations": []
},
{
"id": "5:2348793681892920669",
"lastPropertyId": "8:7488175383318173729",
"name": "Image",
"properties": [
{
"id": "1:638964174063060815",
"name": "actualId"
},
{
"id": "2:4967935003726444020",
"name": "color"
},
{
"id": "3:1353497332618194831",
"name": "id"
},
{
"id": "4:2887915135519113362",
"name": "url"
},
{
"id": "5:8827023004110736151",
"name": "url1080"
},
{
"id": "6:1795038216616196366",
"name": "url160"
},
{
"id": "7:5076768945024929823",
"name": "url360"
},
{
"id": "8:7488175383318173729",
"indexId": "6:4968485658423571275",
"name": "baseExperienceId"
}
],
"relations": []
},
{
"id": "6:2806463549017646468",
"lastPropertyId": "7:1664725566577873631",
"name": "Location",
"properties": [
{
"id": "1:151476474888340297",
"name": "id"
},
{
"id": "2:6138069029925290631",
"name": "city"
},
{
"id": "3:8096792582877437443",
"name": "formattedAddress"
},
{
"id": "4:8477355478574191642",
"name": "mapImgUrl"
},
{
"id": "5:5250680748074469313",
"name": "redirectUrl"
},
{
"id": "6:5264044175718414745",
"name": "lat"
},
{
"id": "7:1664725566577873631",
"name": "lng"
}
],
"relations": []
},
{
"id": "7:1386266048121100599",
"lastPropertyId": "19:3626459003273476368",
"name": "User",
"properties": [
{
"id": "1:7194535953200583315",
"name": "id"
},
{
"id": "2:5880155672016170214",
"name": "age"
},
{
"id": "3:7058496909689094561",
"name": "bio"
},
{
"id": "4:7069552521054985458",
"name": "dob"
},
{
"id": "5:2017478464009051869",
"name": "education"
},
{
"id": "6:7411668424835907052",
"name": "email"
},
{
"id": "7:3598420919065748818",
"name": "fullName"
},
{
"id": "8:55256390599336845",
"name": "gender"
},
{
"id": "10:4287083418016851024",
"name": "numberVerified"
},
{
"id": "11:7486368292287445046",
"name": "phoneNumber"
},
{
"id": "12:332314590071314536",
"name": "shareableUrl"
},
{
"id": "13:3581159011829058253",
"name": "showTutorial"
},
{
"id": "14:45244862441869123",
"name": "username"
},
{
"id": "15:80719230754500568",
"name": "verified"
},
{
"id": "16:8347557177943880481",
"name": "work"
},
{
"id": "17:8060185784410064574",
"indexId": "7:3086777593508744479",
"name": "locationRelationId"
},
{
"id": "18:7093446540087310685",
"indexId": "8:4392926741093129871",
"name": "profilePictureRelationId"
},
{
"id": "19:3626459003273476368",
"name": "host"
}
],
"relations": []
},
{
"id": "8:8172185837942255744",
"lastPropertyId": "4:2905712751785391104",
"name": "Video",
"properties": [
{
"id": "1:4230636119749821279",
"name": "id"
},
{
"id": "2:7059360054054181511",
"name": "nightMode"
},
{
"id": "3:7865268851517989166",
"name": "thumbnailUrl"
},
{
"id": "4:2905712751785391104",
"name": "url"
}
],
"relations": []
}
],
"lastEntityId": "8:8172185837942255744",
"lastIndexId": "8:4392926741093129871",
"lastRelationId": "0:0",
"lastSequenceId": "0:0",
"modelVersion": 4,
"modelVersionParserMinimum": 4,
"retiredEntityUids": [],
"retiredIndexUids": [],
"retiredPropertyUids": [
5678282376830830494
],
"retiredRelationUids": [],
"version": 1
}
Now after adding two new properties to my entity:
#Entity
public class BookingItem {
//region Variables
private long id;
#Id(assignable = true)
private long priority;
private String date;
private String formattedAddress;
private String orderId;
private String type;
private String title;
private int seatCount;
private String pricePerPerson;
private String totalTax; // 1st new propery
private String totalAmount; // 2nd new property
private String time;
private String day;
private String redirectUrl;
private String status;
private long experienceId;
private String shareableUrl;
private ToOne<Image> image;
private ToOne<FeedElement> feedElementToOne;
//endregion
}
and my default.json file:
{
"_note1": "KEEP THIS FILE! Check it into a version control system (VCS) like git.",
"_note2": "ObjectBox manages crucial IDs for your object model. See docs for details.",
"_note3": "If you have VCS merge conflicts, you must resolve them according to ObjectBox docs.",
"entities": [
{
"id": "1:797065206246794980",
"lastPropertyId": "6:5238604438383493820",
"name": "Feed",
"properties": [
{
"id": "1:4778143127430396941",
"name": "id"
},
{
"id": "2:2758756424257447876",
"name": "type"
},
{
"id": "3:8593664445454711775",
"name": "title"
},
{
"id": "4:3260484052954017714",
"name": "seeAll"
},
{
"id": "5:5439051893044673734",
"name": "feedType"
},
{
"id": "6:5238604438383493820",
"indexId": "1:9094671316112178979",
"name": "feedElementToOneId"
}
],
"relations": []
},
{
"id": "2:6365001579184770311",
"lastPropertyId": "8:4101477603790778141",
"name": "BaseExperience",
"properties": [
{
"id": "1:22769140630409817",
"name": "id"
},
{
"id": "2:9018492547283474382",
"name": "actualId"
},
{
"id": "3:7038610176041110296",
"name": "avgRating"
},
{
"id": "4:6685630808795149304",
"name": "customerReviewsCount"
},
{
"id": "5:700371560430014226",
"name": "pricePerPerson"
},
{
"id": "6:5016151397612468696",
"name": "title"
},
{
"id": "7:1936717642548225179",
"indexId": "2:1430584179264421000",
"name": "videoId"
},
{
"id": "8:4101477603790778141",
"indexId": "3:2605016395080192788",
"name": "feedToOneId"
}
],
"relations": []
},
{
"id": "3:6907123400855664498",
"lastPropertyId": "7:2458659011456972963",
"name": "Location",
"properties": [
{
"id": "1:7686305118064424277",
"name": "id"
},
{
"id": "2:2382662573706119095",
"name": "city"
},
{
"id": "3:6622007474920998885",
"name": "formattedAddress"
},
{
"id": "4:4372387463973357662",
"name": "mapImgUrl"
},
{
"id": "5:4242635850865049170",
"name": "redirectUrl"
},
{
"id": "6:6362649356171979743",
"name": "lat"
},
{
"id": "7:2458659011456972963",
"name": "lng"
}
],
"relations": []
},
{
"id": "4:1653889744595737127",
"lastPropertyId": "4:1222058476100793989",
"name": "Video",
"properties": [
{
"id": "1:8884142329290866772",
"name": "id"
},
{
"id": "2:9063641434858436120",
"name": "nightMode"
},
{
"id": "3:6750530027777030938",
"name": "thumbnailUrl"
},
{
"id": "4:1222058476100793989",
"name": "url"
}
],
"relations": []
},
{
"id": "5:2328616238996484251",
"lastPropertyId": "18:8914368039716260545",
"name": "User",
"properties": [
{
"id": "1:8699946482619760537",
"name": "id"
},
{
"id": "2:4839102804066560980",
"name": "age"
},
{
"id": "3:4125992685805831147",
"name": "bio"
},
{
"id": "4:1279509102068824378",
"name": "dob"
},
{
"id": "5:2555427309043212840",
"name": "education"
},
{
"id": "6:5872521230199756193",
"name": "email"
},
{
"id": "7:3289121993356321",
"name": "fullName"
},
{
"id": "8:568408267657413444",
"name": "gender"
},
{
"id": "9:5476542265369423309",
"name": "host"
},
{
"id": "10:7787973054527294793",
"name": "numberVerified"
},
{
"id": "11:7196291790521558535",
"name": "phoneNumber"
},
{
"id": "12:1859664059288662356",
"name": "shareableUrl"
},
{
"id": "13:4056506903853763516",
"name": "showTutorial"
},
{
"id": "14:5747800400884843324",
"name": "username"
},
{
"id": "15:3715522420100243828",
"name": "verified"
},
{
"id": "16:3996139181248738872",
"name": "work"
},
{
"id": "17:3912614163504861034",
"indexId": "4:724013235730952653",
"name": "locationRelationId"
},
{
"id": "18:8914368039716260545",
"indexId": "5:9128231055610190580",
"name": "profilePictureRelationId"
}
],
"relations": []
},
{
"id": "6:162879391314678826",
"lastPropertyId": "19:5998558359424914894",
"name": "BookingItem",
"properties": [
{
"id": "1:7685664473128076565",
"name": "id"
},
{
"id": "2:4691963051617887607",
"name": "priority"
},
{
"id": "3:4751608989851978419",
"name": "date"
},
{
"id": "4:4298668252649681543",
"name": "formattedAddress"
},
{
"id": "5:3557896982175720249",
"name": "orderId"
},
{
"id": "6:5444396912371992185",
"name": "type"
},
{
"id": "7:6350566628717896888",
"name": "title"
},
{
"id": "8:5815948248926709539",
"name": "seatCount"
},
{
"id": "9:1347517584208111506",
"name": "pricePerPerson"
},
{
"id": "10:161182016726729049",
"name": "totalTax"
},
{
"id": "11:2603677420345643342",
"name": "totalAmount"
},
{
"id": "12:6964519603978301018",
"name": "time"
},
{
"id": "13:6563743671015329186",
"name": "day"
},
{
"id": "14:5252213579952934956",
"name": "redirectUrl"
},
{
"id": "15:213202584538548112",
"name": "status"
},
{
"id": "16:2664627056996276806",
"name": "experienceId"
},
{
"id": "17:5051545379861430992",
"name": "shareableUrl"
},
{
"id": "18:4513563003576451503",
"indexId": "6:4794120774209056940",
"name": "imageId"
},
{
"id": "19:5998558359424914894",
"indexId": "7:2963448740658161805",
"name": "feedElementToOneId"
}
],
"relations": []
},
{
"id": "7:6072605387056962258",
"lastPropertyId": "8:620926858576597520",
"name": "Image",
"properties": [
{
"id": "1:4722495423798219248",
"name": "actualId"
},
{
"id": "2:5785809790036589091",
"name": "color"
},
{
"id": "3:898405045397421733",
"name": "id"
},
{
"id": "4:5442888368829266995",
"name": "url"
},
{
"id": "5:3501485434468197765",
"name": "url1080"
},
{
"id": "6:1316954607651171513",
"name": "url160"
},
{
"id": "7:2942445530687114413",
"name": "url360"
},
{
"id": "8:620926858576597520",
"indexId": "8:7864085141767381960",
"name": "baseExperienceId"
}
],
"relations": []
},
{
"id": "8:7509306813647547019",
"lastPropertyId": "3:6958687385472305063",
"name": "FeedElement",
"properties": [
{
"id": "1:3560464698535580090",
"name": "id"
},
{
"id": "2:7436822921002379968",
"name": "nextUrl"
},
{
"id": "3:6958687385472305063",
"name": "feedElementType"
}
],
"relations": []
}
],
"lastEntityId": "8:7509306813647547019",
"lastIndexId": "8:7864085141767381960",
"lastRelationId": "0:0",
"lastSequenceId": "0:0",
"modelVersion": 4,
"modelVersionParserMinimum": 4,
"retiredEntityUids": [],
"retiredIndexUids": [],
"retiredPropertyUids": [],
"retiredRelationUids": [],
"version": 1
}

In case you deleted the app/objectbox-models/default.json and uninstalled the app from your android device but the issue still prevails check your manifest file for android:allowBackup="true" and change it to false. Then repeat the steps again.
This cost me an hour of my life, hope it helps.
Source: The Nuke Option

Here's the solution as stated in the GitHub issue:
The IDs of the two versions in your project are totally off: https://www.diffchecker.com/PF3UlSM7
Please revert to the old "default.json" file and rebuild. There should only be little differences in this file on updates.

Yep. You probably changed your object structure after it created once.
The easiest option to solve it:
Like you said, If it possible you need to remove the default.json file (that build automatically while you build your project). and in the next build it will create again.
I recommend you to read about Resolving Meta Model Conflicts in objectbox documentation.

My issue is resolved and the issue actually is that I deleted my old default.json file by mistake which i didn't have to, which eventually led to regenerate the ids of all the entities and caused me a mismatching UID exception. Thanks to Markus Junginger.

JSON API relationships with moshi

I'm having this response JSON that theorically follows the JSON API specs. I'm trying to parse with the moshi-jsonapi library but I don't know how to parse the some_objects relationship. In the SomeType class I have a member HasMany<SomeObject> someObjects and the class SomeObject is annotated in a proper way:
#JsonApi(type = "some_objects")
public class SomeObject extends Resource {
//....
}
But, after doing the parsing, I'm getting the someObjects member as null. Anyone knows why?
The JSON is that one:
"links": {
"self": "someurl/params"
},
"data": [
{
"type": "some_type",
"id": "12345",
"attributes": {
"attr1": 1,
"attr2": 2,
"attr3": 3
},
"relationships": {
"some_objects": {
"data": [
{
"type": "some_objects",
"id": "1"
},
{
"type": "some_objects",
"id": "2"
}
]
}
}
}
],
"included": [
{
"type": "some_objects",
"id": "1",
"attributes": {
"id": "1",
"parentId": "1"
},
"relationships": {
"subobjects": {
"data": [
{
"type": "subobjects",
"id": "2"
}
]
}
}
{
"type": "subobjects",
"id": "2",
"attributes": {
"metadata": {
"code": "AA"
},
"id": "2",
"parentId": "1"
}
}
],
"meta": {
"total": 1,
"totalCount": 1,
"correction": []
}
}

The only problem was the name of the member, after changing someObjects by 'some_objects' it worked like a charm.

skipping null values when parsing json in android?

I am parsing json object from facebook.
In my facebook json object, there are string keys inside key array "data".
My Code as follows,
"data": [
{
"id": "100001211447563_300696056647440",
"from": {
"name": "Seho Lee",
"id": "100001211447563"
},
"story": "Seho Lee is now using Facebook in English (US).",
"story_tags": {
"0": [
{
"id": 100001211447563,
"name": "Seho Lee",
"offset": 0,
"length": 8
}
]
},
"type": "status",
"created_time": "2012-01-19T09:13:04+0000",
"updated_time": "2012-01-19T09:13:04+0000",
"comments": {
"count": 0
}
},
{
"id": "100001211447563_298802933503419",
"from": {
"name": "Seho Lee",
"id": "100001211447563"
},
"story": "Seho Lee started using Graph API Explorer.",
"story_tags": {
"23": [
{
"id": 145634995501895,
"name": "Graph API Explorer",
"offset": 23,
"length": 18
}
],
"0": [
{
"id": 100001211447563,
"name": "Seho Lee",
"offset": 0,
"length": 8
}
]
},
"picture": "http://photos-a.ak.fbcdn.net/photos-ak-snc1/v43/11/145634995501895/app_1_145634995501895_4870.gif",
"link": "http://developers.facebook.com/tools/explorer/",
"caption": "A tool to help you browse objects within the Facebook Graph API, manage permissions, obtain access tokens and generally learn how it all works.",
"actions": [
{
"name": "Comment",
"link": "http://www.facebook.com/100001211447563/posts/298802933503419"
},
{
"name": "Like",
"link": "http://www.facebook.com/100001211447563/posts/298802933503419"
}
],
"type": "link",
"created_time": "2012-01-16T09:47:57+0000",
"updated_time": "2012-01-16T09:47:57+0000",
"comments": {
"count": 0
}
},
{
"id": "100001211447563_298789650171414",
"from": {
"name": "Seho Lee",
"id": "100001211447563"
},
"story": "Seho Lee likes myFBCovers.com.",
"story_tags": {
"15": [
{
"id": 160901873998019,
"name": "myFBCovers.com",
"offset": 15,
"length": 14
}
],
"0": [
{
"id": 100001211447563,
"name": "Seho Lee",
"offset": 0,
"length": 8
}
]
},
"type": "status",
"created_time": "2012-01-16T08:57:33+0000",
"updated_time": "2012-01-16T08:57:33+0000",
"comments": {
"count": 0
}
}
when I parsing this json object, String key "likes" is sometimes exist and sometimes do not exist in "data" jsonArray. So when I parsing JsonString "likes", sometimes I gets JSONException since I am parsing null value. Is there any way to skipping "null" json value?
Please help me regarding this.

if try catch it, next processes will be skipped.
you can check by isNull("name") method.

Edit: this is to check key. since you mentioned key exists sometimes. did you mean the value?
use JSONObjects method has(key)
data = (JSONObject) new JSONTokener(jsonObjRecv.toString()).nextValue();
if data.has("like"){
...
}
to check whether the value is null check with isNull("name")

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