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  • cordova插件开发

    {//-------------------------------Cordova Plugin 插件开发------------------
    {//1. helloworld
    > cordova create hello
    > cd hello
    > dir /*目录如下
    config.xml: // 配置文件
    hooks目录: //存放自定义cordova命令的脚本文件。每个project命令都可以定义before和after的Hook,比如:before_build、after_build。Hook可以采用任何编程语言来写,Cordova CLI采用的是Node.js,所以一般都是用它来写.
    platforms目录: //各个平台的原生代码工程,不要手动修改,因为在build的时候会被覆盖
    plugins目录: //插件目录(cordova提供的原生API也是以插件的形式提供的)。
    www目录: //源代码目录,.html为应用的入口文件
    */
    在 www目录下创建 hello.html /*并输入下面内容
    <!DOCTYPE HTML>
    <html>
    <head>
    <title>HelloWorld1</title>
    </head>
    <body>
    <h1>Hello World</h1>
    <p>This is a sample Cordova application</p>
    </body>
    </html>
    */
    修改config.xml,把src属性改为hello.html,//修改启动页面为hello.html
    > cordova platform add browser
    > cordova platform add android@6.0 --save
    > cordova build android
    用Android Studio 导入该项目运行
    }

    {//2. "dialogs" 弹出提示框
    > cordova plugin add cordova-plugin-dialogs
    修改 hello.html内容为 /*
    <!DOCTYPE HTML>
    <html>
    <head>
    <script src="cordova.js" type="text/javascript" charset="uft-8"></script> // 加载了核心的Cordova API基本库
    <script type="text/javascript" charset="utf-8">
    function onBodyLoad() {
    document.addEventListener("deviceready", onDeviceReady, false); //注册了deviceready事件的监听器为onDeviceReady函数
    }
    function onDeviceReady() { //当改onDeviceReady被调用时,输出提示信息
    navigator.notification.alert("Cordova API alert Message "); //调用cordova api前需添加其对应的插件例如 dialogs
    }
    </script>
    <titile> use cordova api</title>
    </head>
    <body onload="onBodyLoad()"> //定义了body的 onload事件关联到onBodyLoad处理函数
    <h1>use cordova api</h1>
    <p>use cordova api demo</p>
    </body>
    </html>
    */

    > cordova build android
    用Android Studio 导入该项目运行
    }

    {//3. "device" 获取设备硬件信息
    > cordova plugin add cordova-plugin-device
    修改 hello.html内容为 /*
    <!DOCTYPE HTML>
    <html>
    <head>
    <script src="cordova.js" type="text/javascript" charset="uft-8"></script>
    <script type="text/javascript" charset="utf-8">
    function onBodyLoad() {
    document.addEventListener("deviceready", onDeviceReady, false);
    }
    function onDeviceReady() { //通过device. 的方式获取设备信息
    br = "<br />";
    var element = document.getElementById("appInfo");
    element.innerHTML = 'Cordova Version: ' + device.cordova + br + 'Platform: ' + device.platform + br + 'Model: ' + device.model + br + 'OS Version: ' + device.version;
    }
    </script>
    <titile> use cordova api</title>
    </head>
    <body onload="onBodyLoad()">
    <h1>use cordova api</h1>
    <p>use cordova api device</p>
    <p id="appInfo">Waiting for Cordova Initialization to complete</p> //注意如果前面不添加cordova-plugin-device插件成功,将一直显示该信息
    </body>
    </html>
    */
    > cordova build android
    用Android Studio 导入该项目运行
    }

    {//4. "camera" 实现最简获取camera图片
    > cordova plugin add cordova-plugin-camera
    > cordova plugin add cordova-plugin-console //想看到console.log的信息,必须要安装此插件

    更改config.html /*
    <content src="camera.html" />
    */

    {//---camera.html
    <!DOCTYPE html>
    <!-- test use camera plugin
    -->
    <html>
    <head>
    <meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *">
    <meta name="format-detection" content="telephone=no">
    <meta name="msapplication-tap-highlight" content="no">
    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">
    <link rel="stylesheet"a type="text/css" href="css/index.css">
    <title>test camera plugin</title>
    </head>
    <body>
    <h1>Camera Demo</h1>
    <button id="takeBtn">Take Photo</button>
    <div id="feedback"></div>
    <script type="text/javascript" src="cordova.js"></script>
    <script type="text/javascript" src="js/camera.js"></script>
    </body>
    </html>
    }

    {//---js/camera.js
    var app = {
    // Application Constructor
    initialize: function() {
    this.bindEvents();
    },

    // Bind Event Listeners:
    // Bind any events that are required on startup. Common events are:
    // 'load', 'deviceready', 'offline', and 'online'.
    bindEvents: function() {
    document.addEventListener('deviceready', this.onDeviceReady, false);
    },

    // deviceready Event Handler:
    // The scope of 'this' is the event. In order to call the 'receivedEvent'
    // function, we must explicitly call 'app.receivedEvent(...);'
    onDeviceReady: function() {
    feedback = document.getElementById("feedback");
    feedback.innerHTML = "Ready!";
    app.receivedEvent();
    },

    // Update DOM on a Received Event
    receivedEvent: function() {
    var getPictureButton = document.getElementById("takeBtn");

    getPictureButton.onclick = this.onClickTakeBtn;
    },

    onClickTakeBtn: function() {
    feedback.innerHTML += "<br/> Taking Photo";
    var cameraOptions = {};
    navigator.camera.getPicture(app.cameraSuccess, app.cameraError, cameraOptions);
    },

    cameraSuccess: function(imgData) {
    feedback.innerHTML += "<br/> Received photo";
    feedback.innerHTML += "<br/>" + imgData;
    },

    cameraError: function() {
    feedback.innerHTML = "Get failed";
    }

    };

    app.initialize();
    }

    {//---运行
    > cordova build android
    用Android Studio 导入该项目运行
    }

    }

    {//5. "network" 获取当前网络状态
    > cordova plugin add cordova-plugin-network-information
    {//----network.html
    <!DOCTYPE html>
    <html>
    <head>
    <meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *">
    <meta name="format-detection" content="telephone=no">
    <meta name="msapplication-tap-highlight" content="no">
    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">
    <link rel="stylesheet" type="text/css" href="css/index.css">
    <title>net device info</title>
    </head>
    <body>
    <div class="app">
    <h1>Net Device</h1>
    <div id="deviceready" class="blink">
    <p class="event listening">Connecting to Device</p>
    <p class="event received">Device is Ready</p>
    </div>
    <button id = "networkInfo">INFO 11</button>
    </div>
    <script type="text/javascript" src="cordova.js"></script>
    <script type="text/javascript" src="js/network.js"></script>
    </body>
    </html>
    }

    {//----network.js
    var app = {
    initialize: function() {
    this.bindEvents();
    },

    bindEvents: function() {
    document.addEventListener('deviceready', this.onDeviceReady, false);
    },

    onDeviceReady: function() {
    app.receivedEvent('deviceready');
    },

    receivedEvent: function(id) {
    var parentElement = document.getElementById(id);
    var listeningElement = parentElement.querySelector('.listening');
    var receivedElement = parentElement.querySelector('.received');

    listeningElement.setAttribute('style', 'display:none;');
    receivedElement.setAttribute('style', 'display:block;');

    console.log('Received Event: ' + id);
    }
    };

    app.initialize();

    function load (){
    console.log( 'load start' );
    document.getElementById("networkInfo").addEventListener("click", networkInfo);
    document.addEventListener("offline", onOffline, false);
    document.addEventListener("online", onOnline, false);

    function networkInfo() {
    console.log( 'networkInfo start' );
    var networkState = navigator.connection.type;
    var states = {};

    states[Connection.UNKNOWN] = 'Unknown connection';
    states[Connection.ETHERNET] = 'Ethernet connection';
    states[Connection.WIFI] = 'WiFi connection';
    states[Connection.CELL_2G] = 'Cell 2G connection';
    states[Connection.CELL_3G] = 'Cell 3G connection';
    states[Connection.CELL_4G] = 'Cell 4G connection';
    states[Connection.CELL] = 'Cell generic connection';
    states[Connection.NONE] = 'No network connection';

    alert('Connection type: ' + states[networkState]);
    }

    function onOffline() {
    console.log( 'offline' );
    alert('You are now offline!');
    }

    function onOnline() {
    console.log( 'online' );
    alert('You are now online!');
    }


    }
    window.addEventListener('load',load,false);
    }

    }

    {//6. "geolocation" 地理定位
    > cordova plugin add cordova-plugin-geolocation

    //----geolocation.html
    <button id = "getPosition">CURRENT POSITION</button>
    <button id = "watchPosition">WATCH POSITION</button>
    {//----geolocation.js
    function load (){
    console.log( 'load start' );
    document.getElementById("getPosition").addEventListener("click", getPosition);
    document.getElementById("watchPosition").addEventListener("click", watchPosition);

    function getPosition() {

    var options = {
    enableHighAccuracy: true,
    maximumAge: 3600000
    }

    var watchID = navigator.geolocation.getCurrentPosition(onSuccess, onError, options);

    function onSuccess(position) {

    alert('Latitude: ' + position.coords.latitude + ' ' +
    'Longitude: ' + position.coords.longitude + ' ' +
    'Altitude: ' + position.coords.altitude + ' ' +
    'Accuracy: ' + position.coords.accuracy + ' ' +
    'Altitude Accuracy: ' + position.coords.altitudeAccuracy + ' ' +
    'Heading: ' + position.coords.heading + ' ' +
    'Speed: ' + position.coords.speed + ' ' +
    'Timestamp: ' + position.timestamp + ' ');
    };

    function onError(error) {
    alert('code: ' + error.code + ' ' + 'message: ' + error.message + ' ');
    }
    }

    function watchPosition() {

    var options = {
    maximumAge: 3600000,
    timeout: 3000,
    enableHighAccuracy: true,
    }

    var watchID = navigator.geolocation.watchPosition(onSuccess, onError, options);

    function onSuccess(position) {

    alert('Latitude: ' + position.coords.latitude + ' ' +
    'Longitude: ' + position.coords.longitude + ' ' +
    'Altitude: ' + position.coords.altitude + ' ' +
    'Accuracy: ' + position.coords.accuracy + ' ' +
    'Altitude Accuracy: ' + position.coords.altitudeAccuracy + ' ' +
    'Heading: ' + position.coords.heading + ' ' +
    'Speed: ' + position.coords.speed + ' ' +
    'Timestamp: ' + position.timestamp + ' ');
    };

    function onError(error) {
    alert('code: ' + error.code + ' ' +'message: ' + error.message + ' ');
    }

    }


    }
    window.addEventListener('load',load,false);
    }

    }

    {//7. "motion" 加速度传感器
    >sudo cordova plugin add cordova-plugin-device-motion

    {//----motion.html
    <button id = "getAcceleration">GET ACCELERATION</button>
    <button id = "watchAcceleration">WATCH ACCELERATION</button>
    }

    {//----motion.js
    function load (){
    console.log( 'load start' );

    document.getElementById("getAcceleration").addEventListener("click", getAcceleration);
    document.getElementById("watchAcceleration").addEventListener("click", watchAcceleration);
    function getAcceleration(){
    navigator.accelerometer.getCurrentAcceleration(accelerometerSuccess, accelerometerError);

    function accelerometerSuccess(acceleration) {
    alert('Acceleration X: ' + acceleration.x + ' ' +
    'Acceleration Y: ' + acceleration.y + ' ' +
    'Acceleration Z: ' + acceleration.z + ' ' +
    'Timestamp: ' + acceleration.timestamp + ' ');
    };

    function accelerometerError() {
    alert('onError!');
    };

    }

    function watchAcceleration(){

    var accelerometerOptions = {
    frequency: 3000
    }

    var watchID = navigator.accelerometer.watchAcceleration(accelerometerSuccess, accelerometerError, accelerometerOptions);

    function accelerometerSuccess(acceleration) {
    alert('Acceleration X: ' + acceleration.x + ' ' +
    'Acceleration Y: ' + acceleration.y + ' ' +
    'Acceleration Z: ' + acceleration.z + ' ' +
    'Timestamp: ' + acceleration.timestamp + ' ');

    setTimeout(function() {
    navigator.accelerometer.clearWatch(watchID);
    }, 10000);

    };

    function accelerometerError() {
    alert('onError!');
    };

    }


    }
    window.addEventListener('load',load,false);
    }
    }
    }

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  • 原文地址:https://www.cnblogs.com/iriliguo/p/6476105.html
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