项目背景
想在VUE中使用蓝牙功能，百度了好久也尝试了好多都没法实现。
概念讲价
如果要在浏览器中使用蓝牙，去搜索关键字【navigator.bluetooth】，搜索后发现这根本不是想要的结果。
解决方法
去搜索关键字【uniapp+bluetooth+vue】，这里的vue只是在uniapp中开发的语法，并不是传统的前端开发VUE。因为uniapp有好几种开发的语法。所以结果就是只能用uniapp开发一个网页的软件，然后打包成android的APP和IOS的APP。
uniapp开发的工具是【HBuilder】，现在最新的是【HBuilder X】。
操作教程
1、下载HBuilder X
// 官网下载地址
https://www.dcloud.io/hbuilderx.html2、新建蓝牙项目
3、选择蓝牙模版项目
4、项目结构
它这个模版的项目是html5的，所以直接使用真机运行就行。然后就能看到效果了。真实的开发中我们是使用uniapp打包的apk，也就是uni-app+vue架构的项目。
5、common.js
(function(w){
// 空函数
function shield(){
return false;
}
document.addEventListener('touchstart', shield, false);//取消浏览器的所有事件，使得active的样式在手机上正常生效
document.oncontextmenu=shield;//屏蔽选择函数
// H5 plus事件处理
var ws=null,as='pop-in';
function plusReady(){
ws=plus.webview.currentWebview();
plus.key.addEventListener('backbutton', function(){
back();
},false);
}
if(w.plus){
plusReady();
}else{
document.addEventListener('plusready', plusReady, false);
}
// DOMContentLoaded事件处理
document.addEventListener('DOMContentLoaded', function(){
gInit();
document.body.onselectstart=shield;
},false);
// 返回
w.back=function(hide){
if(w.plus){
ws||(ws=plus.webview.currentWebview());
(hide||ws.preate)?ws.hide('auto'):ws.close('auto');
}else if(history.length>1){
history.back();
}else{
w.close();
}
};
// 处理点击事件
var openw=null;
/**
* 打开新窗口
* @param {URIString} id : 要打开页面url
* @param {String} t : 页面标题名称
* @param {JSON} ws : Webview窗口属性
*/
w.clicked=function(id, t, ws){
if(openw){//避免多次打开同一个页面
return null;
}
if(w.plus){
ws=ws||{};
ws.scrollIndicator||(ws.scrollIndicator='none');
ws.scalable||(ws.scalable=false);
ws.backButtonAutoControl||(ws.backButtonAutoControl='close');
ws.titleNView=ws.titleNView||{autoBackButton:true};
ws.titleNView.backgroundColor = '#D74B28';
ws.titleNView.titleColor = '#CCCCCC';
ws.doc&&(ws.titleNView.buttons=ws.titleNView.buttons||[],ws.titleNView.buttons.push({fontSrc:'_www/helloh5.ttf',text:'\ue301',fontSize:'20px',onclick:'javascript:openDoc()'}));
t&&(ws.titleNView.titleText=t);
openw = plus.webview.create(id, id, ws);
openw.addEventListener('loaded', function(){
openw.show(as);
}, false);
openw.addEventListener('close', function(){
openw=null;
}, false);
return openw;
}else{
w.open(id);
}
return null;
};
/**
* 创建新窗口（无原始标题栏），
* @param {URIString} id : 要打开页面url
* @param {JSON} ws : Webview窗口属性
*/
w.createWithoutTitle=function(id, ws){
if(openw){//避免多次打开同一个页面
return null;
}
if(w.plus){
ws=ws||{};
ws.scrollIndicator||(ws.scrollIndicator='none');
ws.scalable||(ws.scalable=false);
ws.backButtonAutoControl||(ws.backButtonAutoControl='close');
openw = plus.webview.create(id, id, ws);
openw.addEventListener('close', function(){
openw=null;
}, false);
return openw;
}else{
w.open(id);
}
return null;
};
/**
* 打开文档页面
* @param {URIString} c : 要打开页面url
*/
w.openDoc=function(c){
plus.webview.create(c, 'document', {
titleNView:{
autoBackButton:true,
backgroundColor:'#D74B28',
titleColor:'#CCCCCC'
},
backButtonAutoControl:'close',
scalable:false
}).show('pop-in');
};
/**
* 兼容提示
*/
w.compatibleConfirm=function(){
plus.nativeUI.confirm('本OS原生层面不提供该控件，需使用mui框架实现类似效果。请点击“确定”下载Hello mui示例',function(e){
if(0==e.index){
plus.runtime.openURL("http://www.dcloud.io/hellomui/");
}
},"",["确定","取消"]);
}
// 通用元素对象
var _dout_=null;
w.gInit=function(){
_dout_=document.getElementById("output");
};
// 清空输出内容
w.outClean=function(){
_dout_.innerText="";
_dout_.scrollTop=0;//在iOS8存在不滚动的现象
};
// 输出内容
w.outSet=function(s){
console.log(s);
_dout_.innerText=s+"\n";
(0==_dout_.scrollTop)&&(_dout_.scrollTop=1);//在iOS8存在不滚动的现象
};
// 输出行内容
w.outLine=function(s){
console.log(s);
_dout_.innerText+=s+"\n";
(0==_dout_.scrollTop)&&(_dout_.scrollTop=1);//在iOS8存在不滚动的现象
};
// 格式化时长字符串，格式为"HH:MM:SS"
w.timeToStr=function(ts){
if(isNaN(ts)){
return "--:--:--";
}
var h=parseInt(ts/3600);
var m=parseInt((ts%3600)/60);
var s=parseInt(ts%60);
return (ultZeroize(h)+":"+ultZeroize(m)+":"+ultZeroize(s));
};
// 格式化日期时间字符串，格式为"YYYY-MM-DD HH:MM:SS"
w.dateToStr=function(d){
return (d.getFullYear()+"-"+ultZeroize(d.getMonth()+1)+"-"+ultZeroize(d.getDate())+" "+ultZeroize(d.getHours())+":"+ultZeroize(d.getMinutes())+":"+ultZeroize(d.getSeconds()));
};
/**
* zeroize value with length(default is 2).
* @param {Object} v
* @param {Number} l
* @return {String}
*/
w.ultZeroize=function(v,l){
var z="";
l=l||2;
v=String(v);
for(var i=0;i<l-v.length;i++){
z+="0";
}
return z+v;
};
})(window);
// fast click
;(function () {
'use strict';
/**
* @preserve FastClick: polyfill to remove click delays on browsers with touch UIs.
*
* @codingstandard ftlabs-jsv2
* @copyright The Financial Times Limited [All Rights Reserved]
* @license MIT License (see LICENSE.txt)
*/
/*jslint browser:true, node:true*/
/*global define, Event, Node*/
/**
* Instantiate fast-clicking listeners on the specified layer.
*
* @constructor
* @param {Element} layer The layer to listen on
* @param {Object} [options={}] The options to override the defaults
*/
function FastClick(layer, options) {
var oldOnClick;
options = options || {};
/**
* Whether a click is currently being tracked.
*
* @type boolean
*/
this.trackingClick = false;
/**
* Timestamp for when click tracking started.
*
* @type number
*/
this.trackingClickStart = 0;
/**
* The element being tracked for a click.
*
* @type EventTarget
*/
this.targetElement = null;
/**
* X-coordinate of touch start event.
*
* @type number
*/
this.touchStartX = 0;
/**
* Y-coordinate of touch start event.
*
* @type number
*/
this.touchStartY = 0;
/**
* ID of the last touch, retrieved from Touch.identifier.
*
* @type number
*/
this.lastTouchIdentifier = 0;
/**
* Touchmove boundary, beyond which a click will be cancelled.
*
* @type number
*/
this.touchBoundary = options.touchBoundary || 10;
/**
* The FastClick layer.
*
* @type Element
*/
this.layer = layer;
/**
* The minimum time between tap(touchstart and touchend) events
*
* @type number
*/
this.tapDelay = options.tapDelay || 200;
/**
* The maximum time for a tap
*
* @type number
*/
this.tapTimeout = options.tapTimeout || 700;
if (FastClick.notNeeded(layer)) {
return;
}
// Some old versions of Android don't have Function.prototype.bind
function bind(method, context) {
return function() { return method.apply(context, arguments); };
}
var methods = ['onMouse', 'onClick', 'onTouchStart', 'onTouchMove', 'onTouchEnd', 'onTouchCancel'];
var context = this;
for (var i = 0, l = methods.length; i < l; i++) {
context[methods[i]] = bind(context[methods[i]], context);
}
// Set up event handlers as required
if (deviceIsAndroid) {
layer.addEventListener('mouseover', this.onMouse, true);
layer.addEventListener('mousedown', this.onMouse, true);
layer.addEventListener('mouseup', this.onMouse, true);
}
layer.addEventListener('click', this.onClick, true);
layer.addEventListener('touchstart', this.onTouchStart, false);
layer.addEventListener('touchmove', this.onTouchMove, false);
layer.addEventListener('touchend', this.onTouchEnd, false);
layer.addEventListener('touchcancel', this.onTouchCancel, false);
// Hack is required for browsers that don't support Event#stopImmediatePropagation (e.g. Android 2)
// which is how FastClick normally stops click events bubbling to callbacks registered on the FastClick
// layer when they are cancelled.
if (!Event.prototype.stopImmediatePropagation) {
layer.removeEventListener = function(type, callback, capture) {
var rmv = Node.prototype.removeEventListener;
if (type === 'click') {
rmv.call(layer, type, callback.hijacked || callback, capture);
} else {
rmv.call(layer, type, callback, capture);
}
};
layer.addEventListener = function(type, callback, capture) {
var adv = Node.prototype.addEventListener;
if (type === 'click') {
adv.call(layer, type, callback.hijacked || (callback.hijacked = function(event) {
if (!event.propagationStopped) {
callback(event);
}
}), capture);
} else {
adv.call(layer, type, callback, capture);
}
};
}
// If a handler is already declared in the element's onclick attribute, it will be fired before
// FastClick's onClick handler. Fix this by pulling out the user-defined handler function and
// adding it as listener.
if (typeof layer.onclick === 'function') {
// Android browser on at least 3.2 requires a new reference to the function in layer.onclick
// - the old one won't work if passed to addEventListener directly.
oldOnClick = layer.onclick;
layer.addEventListener('click', function(event) {
oldOnClick(event);
}, false);
layer.onclick = null;
}
}
/**
* Windows Phone 8.1 fakes user agent string to look like Android and iPhone.
*
* @type boolean
*/
var deviceIsWindowsPhone = navigator.userAgent.indexOf("Windows Phone") >= 0;
/**
* Android requires exceptions.
*
* @type boolean
*/
var deviceIsAndroid = navigator.userAgent.indexOf('Android') > 0 && !deviceIsWindowsPhone;
/**
* iOS requires exceptions.
*
* @type boolean
*/
var deviceIsIOS = /iP(ad|hone|od)/.test(navigator.userAgent) && !deviceIsWindowsPhone;
/**
* iOS 4 requires an exception for select elements.
*
* @type boolean
*/
var deviceIsIOS4 = deviceIsIOS && (/OS 4_\d(_\d)?/).test(navigator.userAgent);
/**
* iOS 6.0-7.* requires the target element to be manually derived
*
* @type boolean
*/
var deviceIsIOSWithBadTarget = deviceIsIOS && (/OS [6-7]_\d/).test(navigator.userAgent);
/**
* BlackBerry requires exceptions.
*
* @type boolean
*/
var deviceIsBlackBerry10 = navigator.userAgent.indexOf('BB10') > 0;
/**
* Determine whether a given element requires a native click.
*
* @param {EventTarget|Element} target Target DOM element
* @returns {boolean} Returns true if the element needs a native click
*/
FastClick.prototype.needsClick = function(target) {
switch (target.nodeName.toLowerCase()) {
// Don't send a synthetic click to disabled inputs (issue #62)
case 'button':
case 'select':
case 'textarea':
if (target.disabled) {
return true;
}
break;
case 'input':
// File inputs need real clicks on iOS 6 due to a browser bug (issue #68)
if ((deviceIsIOS && target.type === 'file') || target.disabled) {
return true;
}
break;
case 'label':
case 'iframe': // iOS8 homescreen apps can prevent events bubbling into frames
case 'video':
return true;
}
return (/\bneedsclick\b/).test(target.className);
};
/**
* Determine whether a given element requires a call to focus to simulate click into element.
*
* @param {EventTarget|Element} target Target DOM element
* @returns {boolean} Returns true if the element requires a call to focus to simulate native click.
*/
FastClick.prototype.needsFocus = function(target) {
switch (target.nodeName.toLowerCase()) {
case 'textarea':
return true;
case 'select':
return !deviceIsAndroid;
case 'input':
switch (target.type) {
case 'button':
case 'checkbox':
case 'file':
case 'image':
case 'radio':
case 'submit':
return false;
}
// No point in attempting to focus disabled inputs
return !target.disabled && !target.readOnly;
default:
return (/\bneedsfocus\b/).test(target.className);
}
};
/**
* Send a click event to the specified element.
*
* @param {EventTarget|Element} targetElement
* @param {Event} event
*/
FastClick.prototype.sendClick = function(targetElement, event) {
var clickEvent, touch;
// On some Android devices activeElement needs to be blurred otherwise the synthetic click will have no effect (#24)
if (document.activeElement && document.activeElement !== targetElement) {
document.activeElement.blur();
}
touch = event.changedTouches[0];
// Synthesise a click event, with an extra attribute so it can be tracked
clickEvent = document.createEvent('MouseEvents');
clickEvent.initMouseEvent(this.determineEventType(targetElement), true, true, window, 1, touch.screenX, touch.screenY, touch.clientX, touch.clientY, false, false, false, false, 0, null);
clickEvent.forwardedTouchEvent = true;
targetElement.dispatchEvent(clickEvent);
};
FastClick.prototype.determineEventType = function(targetElement) {
//Issue #159: Android Chrome Select Box does not open with a synthetic click event
if (deviceIsAndroid && targetElement.tagName.toLowerCase() === 'select') {
return 'mousedown';
}
return 'click';
};
/**
* @param {EventTarget|Element} targetElement
*/
FastClick.prototype.focus = function(targetElement) {
var length;
// Issue #160: on iOS 7, some input elements (e.g. date datetime month) throw a vague TypeError on setSelectionRange. These elements don't have an integer value for the selectionStart and selectionEnd properties, but unfortunately that can't be used for detection because accessing the properties also throws a TypeError. Just check the type instead. Filed as Apple bug #15122724.
if (deviceIsIOS && targetElement.setSelectionRange && targetElement.type.indexOf('date') !== 0 && targetElement.type !== 'time' && targetElement.type !== 'month') {
length = targetElement.value.length;
targetElement.setSelectionRange(length, length);
} else {
targetElement.focus();
}
};
/**
* Check whether the given target element is a child of a scrollable layer and if so, set a flag on it.
*
* @param {EventTarget|Element} targetElement
*/
FastClick.prototype.updateScrollParent = function(targetElement) {
var scrollParent, parentElement;
scrollParent = targetElement.fastClickScrollParent;
// Attempt to discover whether the target element is contained within a scrollable layer. Re-check if the
// target element was moved to another parent.
if (!scrollParent || !scrollParent.contains(targetElement)) {
parentElement = targetElement;
do {
if (parentElement.scrollHeight > parentElement.offsetHeight) {
scrollParent = parentElement;
targetElement.fastClickScrollParent = parentElement;
break;
}
parentElement = parentElement.parentElement;
} while (parentElement);
}
// Always update the scroll top tracker if possible.
if (scrollParent) {
scrollParent.fastClickLastScrollTop = scrollParent.scrollTop;
}
};
/**
* @param {EventTarget} targetElement
* @returns {Element|EventTarget}
*/
FastClick.prototype.getTargetElementFromEventTarget = function(eventTarget) {
// On some older browsers (notably Safari on iOS 4.1 - see issue #56) the event target may be a text node.
if (eventTarget.nodeType === Node.TEXT_NODE) {
return eventTarget.parentNode;
}
return eventTarget;
};
/**
* On touch start, record the position and scroll offset.
*
* @param {Event} event
* @returns {boolean}
*/
FastClick.prototype.onTouchStart = function(event) {
var targetElement, touch, selection;
// Ignore multiple touches, otherwise pinch-to-zoom is prevented if both fingers are on the FastClick element (issue #111).
if (event.targetTouches.length > 1) {
return true;
}
targetElement = this.getTargetElementFromEventTarget(event.target);
touch = event.targetTouches[0];
if (deviceIsIOS) {
// Only trusted events will deselect text on iOS (issue #49)
selection = window.getSelection();
if (selection.rangeCount && !selection.isCollapsed) {
return true;
}
if (!deviceIsIOS4) {
// Weird things happen on iOS when an alert or confirm dialog is opened from a click event callback (issue #23):
// when the user next taps anywhere else on the page, new touchstart and touchend events are dispatched
// with the same identifier as the touch event that previously triggered the click that triggered the alert.
// Sadly, there is an issue on iOS 4 that causes some normal touch events to have the same identifier as an
// immediately preceeding touch event (issue #52), so this fix is unavailable on that platform.
// Issue 120: touch.identifier is 0 when Chrome dev tools 'Emulate touch events' is set with an iOS device UA string,
// which causes all touch events to be ignored. As this block only applies to iOS, and iOS identifiers are always long,
// random integers, it's safe to to continue if the identifier is 0 here.
if (touch.identifier && touch.identifier === this.lastTouchIdentifier) {
event.preventDefault();
return false;
}
this.lastTouchIdentifier = touch.identifier;
// If the target element is a child of a scrollable layer (using -webkit-overflow-scrolling: touch) and:
// 1) the user does a fling scroll on the scrollable layer
// 2) the user stops the fling scroll with another tap
// then the event.target of the last 'touchend' event will be the element that was under the user's finger
// when the fling scroll was started, causing FastClick to send a click event to that layer - unless a check
// is made to ensure that a parent layer was not scrolled before sending a synthetic click (issue #42).
this.updateScrollParent(targetElement);
}
}
this.trackingClick = true;
this.trackingClickStart = event.timeStamp;
this.targetElement = targetElement;
this.touchStartX = touch.pageX;
this.touchStartY = touch.pageY;
// Prevent phantom clicks on fast double-tap (issue #36)
if ((event.timeStamp - this.lastClickTime) < this.tapDelay) {
event.preventDefault();
}
return true;
};
/**
* Based on a touchmove event object, check whether the touch has moved past a boundary since it started.
*
* @param {Event} event
* @returns {boolean}
*/
FastClick.prototype.touchHasMoved = function(event) {
var touch = event.changedTouches[0], boundary = this.touchBoundary;
if (Math.abs(touch.pageX - this.touchStartX) > boundary || Math.abs(touch.pageY - this.touchStartY) > boundary) {
return true;
}
return false;
};
/**
* Update the last position.
*
* @param {Event} event
* @returns {boolean}
*/
FastClick.prototype.onTouchMove = function(event) {
if (!this.trackingClick) {
return true;
}
// If the touch has moved, cancel the click tracking
if (this.targetElement !== this.getTargetElementFromEventTarget(event.target) || this.touchHasMoved(event)) {
this.trackingClick = false;
this.targetElement = null;
}
return true;
};
/**
* Attempt to find the labelled control for the given label element.
*
* @param {EventTarget|HTMLLabelElement} labelElement
* @returns {Element|null}
*/
FastClick.prototype.findControl = function(labelElement) {
// Fast path for newer browsers supporting the HTML5 control attribute
if (labelElement.control !== undefined) {
return labelElement.control;
}
// All browsers under test that support touch events also support the HTML5 htmlFor attribute
if (labelElement.htmlFor) {
return document.getElementById(labelElement.htmlFor);
}
// If no for attribute exists, attempt to retrieve the first labellable descendant element
// the list of which is defined here: http://www.w3.org/TR/html5/forms.html#category-label
return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea');
};
/**
* On touch end, determine whether to send a click event at once.
*
* @param {Event} event
* @returns {boolean}
*/
FastClick.prototype.onTouchEnd = function(event) {
var forElement, trackingClickStart, targetTagName, scrollParent, touch, targetElement = this.targetElement;
if (!this.trackingClick) {
return true;
}
// Prevent phantom clicks on fast double-tap (issue #36)
if ((event.timeStamp - this.lastClickTime) < this.tapDelay) {
this.cancelNextClick = true;
return true;
}
if ((event.timeStamp - this.trackingClickStart) > this.tapTimeout) {
return true;
}
// Reset to prevent wrong click cancel on input (issue #156).
this.cancelNextClick = false;
this.lastClickTime = event.timeStamp;
trackingClickStart = this.trackingClickStart;
this.trackingClick = false;
this.trackingClickStart = 0;
// On some iOS devices, the targetElement supplied with the event is invalid if the layer
// is performing a transition or scroll, and has to be re-detected manually. Note that
// for this to function correctly, it must be called *after* the event target is checked!
// See issue #57; also filed as rdar://13048589 .
if (deviceIsIOSWithBadTarget) {
touch = event.changedTouches[0];
// In certain cases arguments of elementFromPoint can be negative, so prevent setting targetElement to null
targetElement = document.elementFromPoint(touch.pageX - window.pageXOffset, touch.pageY - window.pageYOffset) || targetElement;
targetElement.fastClickScrollParent = this.targetElement.fastClickScrollParent;
}
targetTagName = targetElement.tagName.toLowerCase();
if (targetTagName === 'label') {
forElement = this.findControl(targetElement);
if (forElement) {
this.focus(targetElement);
if (deviceIsAndroid) {
return false;
}
targetElement = forElement;
}
} else if (this.needsFocus(targetElement)) {
// Case 1: If the touch started a while ago (best guess is 100ms based on tests for issue #36) then focus will be triggered anyway. Return early and unset the target element reference so that the subsequent click will be allowed through.
// Case 2: Without this exception for input elements tapped when the document is contained in an iframe, then any inputted text won't be visible even though the value attribute is updated as the user types (issue #37).
if ((event.timeStamp - trackingClickStart) > 100 || (deviceIsIOS && window.top !== window && targetTagName === 'input')) {
this.targetElement = null;
return false;
}
this.focus(targetElement);
this.sendClick(targetElement, event);
// Select elements need the event to go through on iOS 4, otherwise the selector menu won't open.
// Also this breaks opening selects when VoiceOver is active on iOS6, iOS7 (and possibly others)
if (!deviceIsIOS || targetTagName !== 'select') {
this.targetElement = null;
event.preventDefault();
}
return false;
}
if (deviceIsIOS && !deviceIsIOS4) {
// Don't send a synthetic click event if the target element is contained within a parent layer that was scrolled
// and this tap is being used to stop the scrolling (usually initiated by a fling - issue #42).
scrollParent = targetElement.fastClickScrollParent;
if (scrollParent && scrollParent.fastClickLastScrollTop !== scrollParent.scrollTop) {
return true;
}
}
// Prevent the actual click from going though - unless the target node is marked as requiring
// real clicks or if it is in the whitelist in which case only non-programmatic clicks are permitted.
if (!this.needsClick(targetElement)) {
event.preventDefault();
this.sendClick(targetElement, event);
}
return false;
};
/**
* On touch cancel, stop tracking the click.
*
* @returns {void}
*/
FastClick.prototype.onTouchCancel = function() {
this.trackingClick = false;
this.targetElement = null;
};
/**
* Determine mouse events which should be permitted.
*
* @param {Event} event
* @returns {boolean}
*/
FastClick.prototype.onMouse = function(event) {
// If a target element was never set (because a touch event was never fired) allow the event
if (!this.targetElement) {
return true;
}
if (event.forwardedTouchEvent) {
return true;
}
// Programmatically generated events targeting a specific element should be permitted
if (!event.cancelable) {
return true;
}
// Derive and check the target element to see whether the mouse event needs to be permitted;
// unless explicitly enabled, prevent non-touch click events from triggering actions,
// to prevent ghost/doubleclicks.
if (!this.needsClick(this.targetElement) || this.cancelNextClick) {
// Prevent any user-added listeners declared on FastClick element from being fired.
if (event.stopImmediatePropagation) {
event.stopImmediatePropagation();
} else {
// Part of the hack for browsers that don't support Event#stopImmediatePropagation (e.g. Android 2)
event.propagationStopped = true;
}
// Cancel the event
event.stopPropagation();
event.preventDefault();
return false;
}
// If the mouse event is permitted, return true for the action to go through.
return true;
};
/**
* On actual clicks, determine whether this is a touch-generated click, a click action occurring
* naturally after a delay after a touch (which needs to be cancelled to avoid duplication), or
* an actual click which should be permitted.
*
* @param {Event} event
* @returns {boolean}
*/
FastClick.prototype.onClick = function(event) {
var permitted;
// It's possible for another FastClick-like library delivered with third-party code to fire a click event before FastClick does (issue #44). In that case, set the click-tracking flag back to false and return early. This will cause onTouchEnd to return early.
if (this.trackingClick) {
this.targetElement = null;
this.trackingClick = false;
return true;
}
// Very odd behaviour on iOS (issue #18): if a submit element is present inside a form and the user hits enter in the iOS simulator or clicks the Go button on the pop-up OS keyboard the a kind of 'fake' click event will be triggered with the submit-type input element as the target.
if (event.target.type === 'submit' && event.detail === 0) {
return true;
}
permitted = this.onMouse(event);
// Only unset targetElement if the click is not permitted. This will ensure that the check for !targetElement in onMouse fails and the browser's click doesn't go through.
if (!permitted) {
this.targetElement = null;
}
// If clicks are permitted, return true for the action to go through.
return permitted;
};
/**
* Remove all FastClick's event listeners.
*
* @returns {void}
*/
FastClick.prototype.destroy = function() {
var layer = this.layer;
if (deviceIsAndroid) {
layer.removeEventListener('mouseover', this.onMouse, true);
layer.removeEventListener('mousedown', this.onMouse, true);
layer.removeEventListener('mouseup', this.onMouse, true);
}
layer.removeEventListener('click', this.onClick, true);
layer.removeEventListener('touchstart', this.onTouchStart, false);
layer.removeEventListener('touchmove', this.onTouchMove, false);
layer.removeEventListener('touchend', this.onTouchEnd, false);
layer.removeEventListener('touchcancel', this.onTouchCancel, false);
};
/**
* Check whether FastClick is needed.
*
* @param {Element} layer The layer to listen on
*/
FastClick.notNeeded = function(layer) {
var metaViewport;
var chromeVersion;
var blackberryVersion;
var firefoxVersion;
// Devices that don't support touch don't need FastClick
if (typeof window.ontouchstart === 'undefined') {
return true;
}
// Chrome version - zero for other browsers
chromeVersion = +(/Chrome\/([0-9]+)/.exec(navigator.userAgent) || [,0])[1];
if (chromeVersion) {
if (deviceIsAndroid) {
metaViewport = document.querySelector('meta[name=viewport]');
if (metaViewport) {
// Chrome on Android with user-scalable="no" doesn't need FastClick (issue #89)
if (metaViewport.content.indexOf('user-scalable=no') !== -1) {
return true;
}
// Chrome 32 and above with width=device-width or less don't need FastClick
if (chromeVersion > 31 && document.documentElement.scrollWidth <= window.outerWidth) {
return true;
}
}
// Chrome desktop doesn't need FastClick (issue #15)
} else {
return true;
}
}
if (deviceIsBlackBerry10) {
blackberryVersion = navigator.userAgent.match(/Version\/([0-9]*)\.([0-9]*)/);
// BlackBerry 10.3+ does not require Fastclick library.
// https://github.com/ftlabs/fastclick/issues/251
if (blackberryVersion[1] >= 10 && blackberryVersion[2] >= 3) {
metaViewport = document.querySelector('meta[name=viewport]');
if (metaViewport) {
// user-scalable=no eliminates click delay.
if (metaViewport.content.indexOf('user-scalable=no') !== -1) {
return true;
}
// width=device-width (or less than device-width) eliminates click delay.
if (document.documentElement.scrollWidth <= window.outerWidth) {
return true;
}
}
}
}
// IE10 with -ms-touch-action: none or manipulation, which disables double-tap-to-zoom (issue #97)
if (layer.style.msTouchAction === 'none' || layer.style.touchAction === 'manipulation') {
return true;
}
// Firefox version - zero for other browsers
firefoxVersion = +(/Firefox\/([0-9]+)/.exec(navigator.userAgent) || [,0])[1];
if (firefoxVersion >= 27) {
// Firefox 27+ does not have tap delay if the content is not zoomable - https://bugzilla.mozilla.org/show_bug.cgi?id=922896
metaViewport = document.querySelector('meta[name=viewport]');
if (metaViewport && (metaViewport.content.indexOf('user-scalable=no') !== -1 || document.documentElement.scrollWidth <= window.outerWidth)) {
return true;
}
}
// IE11: prefixed -ms-touch-action is no longer supported and it's recomended to use non-prefixed version
// http://msdn.microsoft.com/en-us/library/windows/apps/Hh767313.aspx
if (layer.style.touchAction === 'none' || layer.style.touchAction === 'manipulation') {
return true;
}
return false;
};
/**
* Factory method for creating a FastClick object
*
* @param {Element} layer The layer to listen on
* @param {Object} [options={}] The options to override the defaults
*/
FastClick.attach = function(layer, options) {
return new FastClick(layer, options);
};
if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {
// AMD. Register as an anonymous module.
define(function() {
return FastClick;
});
} else if (typeof module !== 'undefined' && module.exports) {
module.exports = FastClick.attach;
module.exports.FastClick = FastClick;
} else {
window.FastClick = FastClick;
}
document.addEventListener('DOMContentLoaded', function() {
FastClick.attach(document.body);
}, false);
}());
6、index.html
把这个js复制到自己的项目中，然后在自己的index.html文件中引用，如下所示。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<script>
var coverSupport = 'CSS' in window && typeof CSS.supports === 'function' && (CSS.supports('top: env(a)') ||
CSS.supports('top: constant(a)'))
document.write(
'<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0' +
(coverSupport ? ', viewport-fit=cover' : '') + '" />')
</script>
<script type="text/javascript" src="static/assets/js/common.js"></script>
<title></title>
<!--preload-links-->
<!--app-context-->
</head>
<body>
<div id="app"><!--app-html--></div>
<script type="module" src="/main.js"></script>
</body>
</html>
7、bluetooth.html
所有实现的方法都在这里，自己参考着写一写。
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
<meta name="HandheldFriendly" content="true"/>
<meta name="MobileOptimized" content="320"/>
<title>Hello H5+</title>
<script type="text/javascript" src="../js/common.js"></script>
<script type="text/javascript">
var bds = []; // 可连接设备列表
var deviceId = null, bconnect = false;
var bss = []; // 连接设备服务列表
var serviceId = null;
var bscs = []; // 连接设备服务对应的特征值列表
var characteristicId = null;
var bscws = []; // 可写特征值列表
var wcharacteristicId = null;
// 重设数据
function resetDevices(d,s){
d||(bds=[],deviceId=null,document.getElementById('deivce').value='');
s||(bss=[],serviceId=null,document.getElementById('service').value='');
bscs=[],bscws=[],characteristicId=null,wcharacteristicId=null,document.getElementById('characteristic').value='',document.getElementById('wcharacteristic').value='';
}
// 页面初始化操作
document.addEventListener('plusready', function(e){
// 监听蓝牙适配器状态变化
plus.bluetooth.onBluetoothAdapterStateChange(function(e){
outLine('onBluetoothAdapterStateChange: '+JSON.stringify(e));
});
// 监听搜索到新设备
plus.bluetooth.onBluetoothDeviceFound(function(e){
var devices = e.devices;
outLine('onBluetoothDeviceFound: '+devices.length);
for(var i in devices){
outLine(JSON.stringify(devices[i]));
var device = devices[i];
if(device.deviceId/*&&device.name&&device.name.length>0&&device.name!='null'*/){
bds.push(device);
}
}
if(!bconnect && bds.length>0){ // 默认选择最后一个
var n = bds[bds.length-1].name;
if(!n || n.length<=0){
n = bds[bds.length-1].deviceId;
}
document.getElementById('deivce').value = n;
deviceId = bds[bds.length-1].deviceId;
}
});
// 监听低功耗蓝牙设备连接状态变化
plus.bluetooth.onBLEConnectionStateChange(function(e){
outLine('onBLEConnectionStateChange: '+JSON.stringify(e));
if(deviceId == e.deviceId){ // 更新连接状态
bconnect = e.connected;
}
});
// 监听低功耗蓝牙设备的特征值变化
plus.bluetooth.onBLECharacteristicValueChange(function(e){
outLine('onBLECharacteristicValueChange: '+JSON.stringify(e));
var value = buffer2hex(e.value);
outLine('value(hex) = '+value);
if(characteristicId == e.characteristicId){
// 更新到页面显示
document.getElementById('readvalue').value = value;
}else if(wcharacteristicId == e.characteristicId){
plus.nativeUI.toast(value);
}
});
}, false);
function buffer2hex(value){
var t='';
if(value){
var v=new Uint8Array(value);
for(var i in v){
t += '0x'+v[i].toString(16)+' ';
}
}else{
t='无效值';
}
return t;
}
// 打开蓝牙
function openBluetooth(){
outSet('打开蓝牙适配器：');
plus.bluetooth.openBluetoothAdapter({
success: function(e){
outLine('打开成功!');
},
fail: function(e){
outLine('打开失败! '+JSON.stringify(e));
}
});
}
// 开始搜索蓝牙设备
function startDiscovery(){
outSet('开始搜索蓝牙设备：');
resetDevices();
plus.bluetooth.startBluetoothDevicesDiscovery({
success: function(e){
outLine('开始搜索成功!');
},
fail: function(e){
outLine('开始搜索失败! '+JSON.stringify(e));
}
});
}
// 停止搜索蓝牙设备
function stopDiscovery(){
outSet('停止搜索蓝牙设备：');
plus.bluetooth.stopBluetoothDevicesDiscovery({
success: function(e){
outLine('停止搜索成功!');
},
fail: function(e){
outLine('停止搜索失败! '+JSON.stringify(e));
}
});
}
// 选择蓝牙设备
function selectDevice(){
if(bds.length <= 0){
plus.nativeUI.toast('未搜索到有效蓝牙设备!');
return;
}
var bts=[];
for(var i in bds){
var t = bds[i].name;
if(!t || t.length<=0){
t = bds[i].deviceId;
}
bts.push({title:t});
}
plus.nativeUI.actionSheet({title:"选择蓝牙设备",cancel:"取消",buttons:bts}, function(e){
if(e.index>0){
document.getElementById('deivce').value = bds[e.index-1].name;
deviceId = bds[e.index-1].deviceId;
outLine('选择了"'+bds[e.index-1].name+'"');
}
});
}
// 连接蓝牙设备
function connectDevice(){
if(!deviceId){
plus.nativeUI.toast('未选择设备!');
return;
}
outSet('连接设备: '+deviceId);
plus.bluetooth.createBLEConnection({
deviceId: deviceId,
success: function(e){
outLine('连接成功!');
},
fail: function(e){
outLine('连接失败! '+JSON.stringify(e));
}
});
}
// 获取设备服务
function getServices(){
if(!deviceId){
plus.nativeUI.toast('未选择设备!');
return;
}
if(!bconnect){
plus.nativeUI.toast('未连接蓝牙设备!');
return;
}
resetDevices(true);
outSet('获取蓝牙设备服务:');
plus.bluetooth.getBLEDeviceServices({
deviceId: deviceId,
success: function(e){
var services = e.services;
outLine('获取服务成功! '+services.length);
if(services.length>0){
for(var i in services){
bss.push(services[i]);
outLine(JSON.stringify(services[i]));
}
if(bss.length>0){ // 默认选择最后一个服务
document.getElementById('service').value = serviceId = bss[bss.length-1].uuid;
}
}else{
outLine('获取服务列表为空?');
}
},
fail: function(e){
outLine('获取服务失败! '+JSON.stringify(e));
}
});
}
// 选择服务
function selectService(){
if(bss.length <= 0){
plus.nativeUI.toast('未获取到有效蓝牙服务!');
return;
}
var bts=[];
for(var i in bss){
bts.push({title:bss[i].uuid});
}
plus.nativeUI.actionSheet({title:"选择服务",cancel:"取消",buttons:bts}, function(e){
if(e.index>0){
document.getElementById('service').value = serviceId = bss[e.index-1].uuid;
outLine('选择了服务: "'+serviceId+'"');
}
});
}
// 获取服务的特征值
function getCharacteristics(){
if(!deviceId){
plus.nativeUI.toast('未选择设备!');
return;
}
if(!bconnect){
plus.nativeUI.toast('未连接蓝牙设备!');
return;
}
if(!serviceId){
plus.nativeUI.toast('未选择服务!');
return;
}
resetDevices(true, true);
outSet('获取蓝牙设备指定服务的特征值:');
plus.bluetooth.getBLEDeviceCharacteristics({
deviceId: deviceId,
serviceId: serviceId,
success: function(e){
var characteristics = e.characteristics;
outLine('获取特征值成功! '+characteristics.length);
if(characteristics.length>0){
for(var i in characteristics){
var characteristic = characteristics[i];
outLine(JSON.stringify(characteristic));
if(characteristic.properties){
if(characteristic.properties.read){
bscs.push(characteristics[i]);
}
if(characteristic.properties.write){
bscws.push(characteristics[i]);
if(characteristic.properties.notify||characteristic.properties.indicate){
plus.bluetooth.notifyBLECharacteristicValueChange({ //监听数据变化
deviceId: deviceId,
serviceId: serviceId,
characteristicId: characteristic.uuid,
success: function(e){
outLine('notifyBLECharacteristicValueChange '+characteristic.uuid+' success.');
},
fail: function(e){
outLine('notifyBLECharacteristicValueChange '+characteristic.uuid+' failed! '+JSON.stringify(e));
}
});
}
}
}
}
if(bscs.length>0){ // 默认选择最后特征值
document.getElementById('characteristic').value = characteristicId = bscs[bscs.length-1].uuid;
}
if(bscws.length>0){ // 默认选择最后一个可写特征值
document.getElementById('wcharacteristic').value = wcharacteristicId = bscws[bscws.length-1].uuid;
}
}else{
outLine('获取特征值列表为空?');
}
},
fail: function(e){
outLine('获取特征值失败! '+JSON.stringify(e));
}
});
}
// 选择特征值(读取)
function selectCharacteristic(){
if(bscs.length <= 0){
plus.nativeUI.toast('未获取到有效可读特征值!');
return;
}
var bts=[];
for(var i in bscs){
bts.push({title:bscs[i].uuid});
}
plus.nativeUI.actionSheet({title:'选择特征值',cancel:'取消',buttons:bts}, function(e){
if(e.index>0){
document.getElementById('characteristic').value = characteristicId = bscs[e.index-1].uuid;
outLine('选择了特征值: "'+characteristicId+'"');
}
});
}
// 读取特征值数据
function readValue(){
if(!deviceId){
plus.nativeUI.toast('未选择设备!');
return;
}
if(!bconnect){
plus.nativeUI.toast('未连接蓝牙设备!');
return;
}
if(!serviceId){
plus.nativeUI.toast('未选择服务!');
return;
}
if(!characteristicId){
plus.nativeUI.toast('未选择读取的特征值!');
return;
}
outSet('读取蓝牙设备的特征值数据: ');
plus.bluetooth.readBLECharacteristicValue({
deviceId: deviceId,
serviceId: serviceId,
characteristicId: characteristicId,
success: function(e){
outLine('读取数据成功!');
},
fail: function(e){
outLine('读取数据失败! '+JSON.stringify(e));
}
});
}
// 选择特征值(写入)
function selectwCharacteristic(){
if(bscws.length <= 0){
plus.nativeUI.toast('未获取到有效可写特征值!');
return;
}
var bts=[];
for(var i in bscws){
bts.push({title:bscws[i].uuid});
}
plus.nativeUI.actionSheet({title:'选择特征值',cancel:'取消',buttons:bts}, function(e){
if(e.index>0){
document.getElementById('wcharacteristic').value = wcharacteristicId = bscws[e.index-1].uuid;
outLine('选择了特征值: "'+wcharacteristicId+'"');
}
});
}
// 写入特征值数据
function writeValue(){
if(!deviceId){
plus.nativeUI.toast('未选择设备!');
return;
}
if(!bconnect){
plus.nativeUI.toast('未连接蓝牙设备!');
return;
}
if(!serviceId){
plus.nativeUI.toast('未选择服务!');
return;
}
if(!wcharacteristicId){
plus.nativeUI.toast('未选择写入的特征值!');
return;
}
var value = document.getElementById('writevalue').value;
if(!value || value==''){
plus.nativeUI.toast('请输入需要写入的数据');
document.getElementById('writevalue').focus();
return;
}
// 转换为ArrayBuffer写入蓝牙
str2ArrayBuffer(value, function(buffer){
outSet('写入蓝牙设备的特征值数据: ');
plus.bluetooth.writeBLECharacteristicValue({
deviceId: deviceId,
serviceId: serviceId,
characteristicId: wcharacteristicId,
value: buffer,
success: function(e){
outLine('写入数据成功!');
},
fail: function(e){
outLine('写入数据失败! '+JSON.stringify(e));
}
});
});
}
function str2ArrayBuffer(s,f) {
var b = new Blob([s],{type:'text/plain'});
var r = new FileReader();
r.readAsArrayBuffer(b);
r.onload = function(){if(f)f.call(null,r.result)}
}
// 断开蓝牙设备
function disconnectDevice(){
if(!deviceId){
plus.nativeUI.toast('未选择设备!');
return;
}
resetDevices(true);
outSet('断开蓝牙设备连接：');
plus.bluetooth.closeBLEConnection({
deviceId: deviceId,
success: function(e){
outLine('断开连接成功!');
},
fail: function(e){
outLine('断开连接失败! '+JSON.stringify(e));
}
});
}
// 关闭蓝牙
function closeBluetooth(){
outSet('关闭蓝牙适配器：');
resetDevices();
plus.bluetooth.closeBluetoothAdapter({
success: function(e){
outLine('关闭成功!');
bconnect = false;
},
fail: function(e){
outLine('关闭失败! '+JSON.stringify(e));
}
});
}
</script>
<link rel="stylesheet" href="../css/common.css" type="text/css" charset="utf-8"/>
</head>
<body>
<br/>
<div class="button" onclick="openBluetooth()">初始化蓝牙模块</div>
<div class="button" onclick="startDiscovery()">开始搜索蓝牙设备</div>
<div class="button" onclick="stopDiscovery()">停止搜索蓝牙设备</div>
设备：<input id="deivce" type="text" disabled="disabled"></input>
<a href="#" onclick="selectDevice()">选择设备</a>
<div class="button" onclick="connectDevice()">连接蓝牙设备</div>
<div class="button" onclick="getServices()">获取设备服务</div>
服务：<input id="service" type="text" disabled="disabled"></input>
<a href="#" onclick="selectService()">选择服务</a>
<div class="button" onclick="getCharacteristics()">获取服务的特征值</div>
读取特征值：<input id="characteristic" type="text" disabled="disabled"></input>
<a href="#" onclick="selectCharacteristic()">选择</a>
<div class="button" onclick="readValue()">读取特征值数据</div>
读取数据：<input id="readvalue" type="text" disabled="disabled" style="width:60%"></input>
<hr/>
<br/>
写入特征值：<input id="wcharacteristic" type="text" disabled="disabled"></input>
<a href="#" onclick="selectwCharacteristic()">选择</a>
<div class="button" onclick="writeValue()">写入特征值数据</div>
写入数据：<input id="writevalue" type="text" style="width:60%;-webkit-user-select:text" value="test"></input>
<div class="button" onclick="disconnectDevice()">断开蓝牙设备</div>
<div class="button" onclick="closeBluetooth()">关闭蓝牙模块</div>
<div id="outpos"/>
<div id="output">
Bluetooth用于管理蓝牙设备，搜索附近蓝牙设备、连接实现数据通信等。
</div>
</body>
</html>8、权限勾选
上面说过了，它的html5的模版是可以直接运行的，不存在打包。然后我们开发APP，需要本地离线打包，然后注意在manifest.json勾选蓝牙。
9、离线打包
// 打包教程
https://blog.csdn.net/renkai721/article/details/139068540打包的时候记得把HBuilder-HelloUniApp\app\libs\Bluetooth-release.aar的这个文件复制到HBuilder-Integrate-AS\simpleDemo\libs文件夹下面。
