How to add header in new Onesignal React-native - react-native

Question

Error: {"errors": ["Please include a case-sensitive header of Authorization: Basic <YOUR-REST-API-KEY-HERE> with a valid REST API key."], "reference": ["https://documentation.onesignal.com/docs/accounts-and-keys#section-keys-ids"]}
I tried as below but error as given above
sendNotification = async (data) => {
const { userId } = await OneSignal.getDeviceState();
const notificationObj = {
contents: { en: "Message Body" },
include_player_ids: [userId],
Authorization: "Basic APIKEY",
headings: { en: 'You have new notification' },
android_channel_id: 'id',
template_id: 'id',
buttons: [{ "id": "open_flat", "text": "OPEN HOSTING", "icon": "ic_menu_share" }],
include_external_user_ids: ["13245-123455"],
};
const jsonString = JSON.stringify(notificationObj);
OneSignal.postNotification(jsonString, (success) => {
console.log("Success:", success);
}, (error) => {
console.log("Error:", error);
});
};
//Sending demo
useEffect(() => {
sendNotification()
})
I am getting the error :
Error: {"errors": ["Please include a case-sensitive header of Authorization: Basic with a valid REST API key."], "reference": ["https://documentation.onesignal.com/docs/accounts-and-keys#section-keys-ids"]}
Few months i tried to send notification with fetch with contenttype and Auth header

Answer 1

You need to replace APIKEY with your actual API key, e.g. your API key is "MY_API_KEY123456", then the header should be Authorization: "Basic MY_API_KEY123456"

Answer 2

FOR ANY ONE HAS THIS ERROR
let headers = {
'Content-Type': 'application/json; charset=utf-8',
Authorization: `Basic '<API-KEY-HERE>'`,
};
let endpoint = 'https://onesignal.com/api/v1/notifications';
let params = {
method: 'POST',
headers: headers,
body: JSON.stringify({
app_id: 'App Id',
include_external_user_ids: [{'userid'},{'userid2'}], --> Optional
headings: { en: 'DATA'},
contents: { en: 'DATA'},
buttons: [{ "id": 'id', "text": 'OPEN', "icon": "ic_baseline_open_in_new_24" }], --> OPTIONAL
data: 'Extra data as json'
}),
};
fetch(endpoint, params).then(res => { console.log('sucess NotiButton') }).catch(error => console.log('error' + error));