【发布时间】：2017-01-15 16:14:30
【问题描述】：
我在 PhoneGap/Cordova App 中使用“randdusing/cordova-plugin-bluetoothle”插件来创建蓝牙应用程序。我正在使用插件的GitHub page 上给出的一个简单示例。但我没有列出任何设备，但收到一条消息Scanning for devices (will continue to scan until you select a device)...
下面是我正在使用的代码
document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
bluetoothle.initialize({
request: true,
statusReceiver: false
}, initializeSuccess, handleError);
}
function initializeSuccess(result) {
if (result.status === "enabled") {
log("Bluetooth is enabled.");
log(result);
} else {
document.getElementById("start-scan").disabled = true;
log("Bluetooth is not enabled:", "status");
log(result, "status");
}
}
function handleError(error) {
var msg;
if (error.error && error.message) {
var errorItems = [];
if (error.service) {
errorItems.push("service: " + (uuids[error.service] || error.service));
}
if (error.characteristic) {
errorItems.push("characteristic: " + (uuids[error.characteristic] || error.characteristic));
}
msg = "Error on " + error.error + ": " + error.message + (errorItems.length && (" (" + errorItems.join(", ") + ")"));
} else {
msg = error;
}
log(msg, "error");
if (error.error === "read" && error.service && error.characteristic) {
reportValue(error.service, error.characteristic, "Error: " + error.message);
}
}
var foundDevices = [];
function startScan() {
log("Starting scan for devices...", "status");
document.getElementById("devices").innerHTML = "";
document.getElementById("services").innerHTML = "";
document.getElementById("output").innerHTML = "";
if (window.cordova.platformId === "windows") {
bluetoothle.retrieveConnected(retrieveConnectedSuccess, handleError, {});
} else {
bluetoothle.startScan(startScanSuccess, handleError, {
services: []
});
}
}
function startScanSuccess(result) {
log("startScanSuccess(" + result.status + ")");
if (result.status === "scanStarted") {
log("Scanning for devices (will continue to scan until you select a device)...", "status");
} else if (result.status === "scanResult") {
if (!foundDevices.some(function (device) {
return device.address === result.address;
})) {
log('FOUND DEVICE:');
log(result);
foundDevices.push(result);
addDevice(result.name, result.address);
}
}
}
function retrieveConnectedSuccess(result) {
log("retrieveConnectedSuccess()");
log(result);
result.forEach(function (device) {
addDevice(device.name, device.address);
});
}
function addDevice(name, address) {
var button = document.createElement("button");
button.style.width = "100%";
button.style.padding = "10px";
button.style.fontSize = "16px";
button.textContent = name + ": " + address;
button.addEventListener("click", function () {
document.getElementById("services").innerHTML = "";
connect(address);
});
document.getElementById("devices").appendChild(button);
}
function log(msg, level) {
level = level || "log";
if (typeof msg === "object") {
msg = JSON.stringify(msg, null, " ");
}
console.log(msg);
if (level === "status" || level === "error") {
var msgDiv = document.createElement("div");
msgDiv.textContent = msg;
if (level === "error") {
msgDiv.style.color = "red";
}
msgDiv.style.padding = "5px 0";
msgDiv.style.borderBottom = "rgb(192,192,192) solid 1px";
document.getElementById("output").appendChild(msgDiv);
}
}
这是我在 Cordova 的第一个蓝牙 LE 项目。请帮助我，并通过良好的文档推荐任何其他比这更好的插件。
谢谢。
【问题讨论】：
标签： android ios cordova bluetooth