Phonegap没有互联网警报弹出问题 [英] Phonegap no internet alert pop up issue

问题描述

我在网上搜索，我得到这个脚本，当应用程序打开时告诉连接类型。

I search on the web and i get this script when tells the connection type when an app opens.

<script type="text/javascript" src="cordova-2.5.0.js"></script>
<script type="text/javascript" charset="utf-8">

// Wait for PhoneGap to load
// 
document.addEventListener("deviceready", onDeviceReady, false);

// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
    checkConnection();
}

function checkConnection() {
    var networkState = navigator.network.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.NONE]     = 'No network connection';

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

</script>

但是我想要的是当没有互联网时显示警报，所以我发现一个脚本它有一个条件语句，但它无法工作

But what i wanted it to do is show the alert when there is no internet so i found a script which had a conditional statement but it failed to work

var networkState = navigator.network.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.NONE]     = 'No network connection';

if ((states[networkState]) == states[Connection.NONE])
{
alert("Please check your internet connectivity and try again"); 
}

请有人告诉我出路，

<form id="loginform" name="loginform" method="POST" action="http://mysite/login.php">

推荐答案

[] 值到字符串，我使用 true / false ，并且知道 NONE code> UNKOWN 都是没有连接的指示符，我这样设置：

Instead of assigning the states[] values to strings, I use true/false and knowing that NONE and UNKOWN are both indicators of no connection I set like this:

    states[Connection.UNKNOWN]  = false;
    states[Connection.ETHERNET] = true;
    states[Connection.WIFI]     = true;
    states[Connection.CELL_2G]  = true;
    states[Connection.CELL_3G]  = true;
    states[Connection.CELL_4G]  = true;
    states[Connection.CELL]     = true;
    states[Connection.NONE]     = false;

然后您可以：

if (states[networkState] === false) {
    //do something
 }

这篇关于Phonegap没有互联网警报弹出问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！