我正在写一个简单的应用程序来跟踪我的手机信号强度较差的时间段。我使用IntentService来实现这一点,它按如下方式监听PhoneStateListener.LISTEN_SIGNAL_STRENGTHS:
public class PoorSignalIntentService extends IntentService {
private TelephonyManager mTelephonyManager;
private PhoneStateListener mPhoneStateListener;
public PoorSignalIntentServi
我正在学习rest api,但不断收到以下错误。为什么?我使用Node JS,Mongo DB和Express。我对此还不熟悉。
代码:
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
//connect to mongoose
mongoose.connect('mongodb://localost/bookstore
我试图在dm中找到消息并通过discord.js编辑它,但我无法执行我的代码:
const User = client.users.cache.get(usrid);
if (!User.dmChannel) return console.log("No messages found.");
// Getting the message by ID
User.dmChannel.messages.fetch(lastmsgid).then(dmMessage
我得到了这个错误: ERROR RangeError: Maximum call stack size exceeded
at ChartElement.update (Chart.js:11474)
at fitBoxes (Chart.js:7127)
at fitBoxes (Chart.js:7145)
at fitBoxes (Chart.js:7145)
at fitBoxes (Chart.js:7145)
at fitBoxes (Chart.js:7145)
at fitBoxes (Chart.js:7145)
尝试使用zebra将状态设置为json,而json是通过在类构造函数中读取csv生成的。
import "./Maps.css";
import * as z from "zebras";
import df3 from "./df3.json"
class Maps extends Component {
constructor() {
super();
const data = z.readCSV(df3);
this.state = data
}
render()
{
console.log(