[英]push new object into flatlist data array
我正在嘗試制作一個聊天應用程序,我有一個 flatlist,我的 flatlist 數據來自 apis,我要將我的新消息推送到這個 flatlist 並使用新數據顯示我的組件。 但問題是我的列表數據沒有改變,也沒有顯示我的新消息,有人可以幫助我嗎?
useEffect(() => {
chatHistoryData()
}, [])
let chatHistoryData = async () => {
try {
setLoading(true);
setError(false);
let res = await axios.get(`https://call.darmankade.com/report/${reserveHash}`);
if (res && res.data) {
let filterChatData = res.data.filter((x: any) => x.type != 4);
console.log("chat data: ", filterChatData)
setChatData(filterChatData);
setLoading(false);
setError(false);
}
} catch (error) {
console.log('loading consult history failed: ', error);
setLoading(false);
setError(true);
}
}
我的 flatlist 和 textinput 組件
<FlatList
ref={chatList}
data={chatData}
keyExtractor={(item: any) => item.index}
onContentSizeChange={() => chatList.current.scrollToEnd()}
ListFooterComponent={() => { return <View style={{ height: verticalScale(20) }} /> }}
renderItem={(data: any) => {
return <MessageBody
patientSide={data.item.side == consultSides.Patient}
doctorSide={data.item.side == consultSides.Doctor}
textMsg={data.item.type == 1}
hasImage={data.item.type == 3}
hasVoice={data.item.type == 2}
content={data.item.content}
messageTime={data.item.date.slice(11, 16)}
/>
}}
/>
<MessageInput
inputValue={messageTxt}
inputOnchangeText={setMessageTxt}
startRecording={sendMessage}
/>
我的發送按鈕
let sendMessage = useCallback(() => {
let newChatData = [...chatData]
newChatData.push({
connectionId: "9f5dssd_qGJUYhHMDRnm05g5yw",
content: "salam niloo",
date: "2020-10-31T12:55:03.076",
side: consultSides.Doctor,
type: consultMessages.text,
userAgent: null
})
setChatData(newChatData)
}, [messageTxt])
您可以執行以下操作,而不是使用.push
,
let sendMessage = useCallback(() => {
let newChatData = [...chatData, {
connectionId: "9f5dssd_qGJUYhHMDRnm05g5yw",
content: "salam niloo",
date: "2020-10-31T12:55:03.076",
side: consultSides.Doctor,
type: consultMessages.text,
userAgent: null
}];
setChatData(newChatData)
}, [messageTxt])
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