How to Parse Json Boolean Value

How to parse JSON boolean value?

A boolean is not an integer; 1 and 0 are not boolean values in Java. You'll need to convert them explicitly:

boolean multipleContacts = (1 == jsonObject.getInt("MultipleContacts"));

or serialize the ints as booleans from the start.

Parsing JSON - Can't get boolean value from JsonObject

The reason that is breaking your code is that you are calling the wrong method...

Do

success = root.get("success").getAsBoolean();

instead of

success = root.getAsJsonObject("success").getAsBoolean();

Example:

public static void main(String[] args) {
    String result = "{\"success\": false, \"message\": \"some string\", \"data\": []}";
    JsonObject root = new JsonParser().parse(result).getAsJsonObject();
    boolean success = root.get("success").getAsBoolean();
    }

How to take int from json and parse it as bool in dart?

Try this,

class Abc extends Model {
  bool playful;

  Abc({this.playful}) : super(id);

  Abc.fromJson(Map<String, dynamic> json) : this(playful: json['playful'] == 1);

  Map<String, dynamic> toJson() {
    final data = <String, dynamic>{};
    data['playful'] = this.playful ? 1 : 0;
    return data;
  }
}

Parsing JSON Boolean value in Inno Setup?

There's no TJsonBool in the JsonParser library. There's:

TJsonWord = (JWUnknown, JWTrue, JWFalse, JWNull);

Use something like this and compare TheWord with JWTrue/JWFalse.

function FindJsonWord(
  Output: TJsonParserOutput; Parent: TJsonObject; Key: TJsonString;
  var TheWord: TJsonWord): Boolean;
var
  JsonValue: TJsonValue;
begin
  Result :=
    FindJsonValue(Output, Parent, Key, JsonValue) and
    (JsonValue.Kind = JVKWord);

  if Result then
  begin    
    TheWord := Output.Words[JsonValue.Index]; 
  end;
end;

Reading JSON boolean value

There is no need to make it so complex. Json also gives us a option to do it in a easy way.i.e., opt (optString(), optBoolean(), optJsonArray()) instead of get (getString(), getBoolean(), getJsonArray()). What this opt does is, it will check whether the given key is present in your json string or not. If the json string has the key it will return the value otherwise it will null (or) false for Boolean by default no Json exception will occurs. This will reduce unnecessary if condition's.In your case, you have checked whether the "teamLead" Boolean object exists or not, which can be easily achieved as shown below.

m.setTeamLead(teamObject.optBoolean("teamLead", false));

If you want to check the Boolean value using if condition, you can do it in the following way.

if (m.getTeamLead()) {
//True
} else {
//False
}

Hope this helps.

How to parse a boolean from a JSON response in React

I might be misunderstanding the question, but react uses JSX which is JavaScript and XML so JSON is native in ReactJS.

https://codepen.io/jeremu/pen/MVGdWP

const myJson = {
  awaiting_status: false,
  batch: 1,
  email_exists: true,
  receipts: ["test1", "test2"]
};

function EmailMessage(props) {
  return myJson && myJson.email_exists
    ? 'Yes, yes it does.'
    : 'No. Check back later';
}

function App() {
  return (
    <div>
      <h1>Does Email Exist?</h1>
      <EmailMessage />
    </div>
  );
}

ReactDOM.render(<App />, document.getElementById('root'));

Will return ... Yes, yes it does

Can/should boolean values be passed in json with quotes?

Short answer, yes that is the proper way to send the JSON. You should not be placing anything other than a string inside of quotes.

Long answer,

It depends on the data type. For the Key, yes you have to use quotes but only for strings. Also, you can use single quotes if you want to place a quotation mark inside of it. (or use escape)

' 

for instance,
vs

"

As for your bool value, if you want it to convert straight into a bool, than you do not need to include the quotes. Same for integers and double values.

But if you want to pass it as a string, than you will need to put it inside of quotes.

Generally, these types of questions are asked when you discuss what types of systems will be accepting your data.

It's generally much easier to use strings everywhere, but it's also extremely inefficient and results in your recipient needing to cast them if they want to do arithmetic with an int for instance, but it's passed as a string.

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