React Native useState Render Error : [Too many re-renders.] - react-native

Question

This is my code:
export default function App() {
const [onProcess, setOnProcess] = useState("normal")
var myid = "123"
const [data, setData] = useState([]);
useEffect(() => {
fetch('https://api.npoint.io/0294bea2185268c9ac70')
.then((response) => response.json())
.then((json) => setData(json))
.catch((error) => console.log('ERR :', error))
},[]);
for (let x in data) {
if (data[x].client_id == myid) {
var set = data[x].situation
setOnProcess(set)
console.log(data[x].situation)
break
}
}
const rt_normal = (
<View style={styles.container}>
<Text> This is normal view </Text>
</View>
)
const rt_process = (
<View style={styles.container}>
<Text> This is process view </Text>
</View>
)
if (onProcess == "normal") {
return rt_normal
}
else if (onProcess == "_on_process") {
return rt_process
}
}
The error I got is:
:[Render Error. Too many re-renders. React limits the number of renders to prevent an infinite loop.]
This happens because of setOnProcess(set) code. How can I solve this?

Answer 1

You should remove your for...in loop and refactor to utilise useEffect.
useEffect(() => {
// Get a specific entry where client_id matches myId.
const filteredItem = data.find(item => item.client_id === myId);
// Perform a check as .find() can return undefined.
if(filteredItem.situation) {
setSituation(filteredItem.situation);
}
}, [data]);

Answer 2

Put the for loop inside a useEffect
(Untested) example:
useEffect(() => {
for (let x in data) {
if (data[x].client_id == myid) {
var set = data[x].situation;
setOnProcess(set);
console.log(data[x].situation);
break;
}
}
}, [data]);