我在iphone钛App中传递变量时遇到问题。下面是我的AppTabGroup.js文件。有一个名为'grantEntrance'的事件监听器。当这被触发时,我需要将变量event.name和event.email传递给所有新选项卡。出于某种原因,这对我不起作用。我最终得到了未定义的错误。我想我的问题是如何设置全局变量?与event.name一样,它会显示在应用程序的任何位置。
function AppTabGroup() {
//declare module dependencies
var AppWindow = require('ui/AppWindow');
var OverviewWindow = require('ui/OverviewWindow');
var LeadWindow = require('ui/LeadWindow');
var CaseWindow = require('ui/CaseWindow');
var ResourcesWindow = require('ui/ResourcesWindow');
//create module instance
var self = Ti.UI.createTabGroup();
//create app tabs
var win1 = new OverviewWindow(L('Login')),
win2 = new CaseWindow(L('Cases'));
win3 = new LeadWindow(L('Leads'));
win4 = new ResourcesWindow(L('Resources'));
var tab1 = Ti.UI.createTab({
title: L('Login'),
icon: '/images/KS_nav_ui.png',
window: win1
});
win1.containingTab = tab1;
var tab2 = Ti.UI.createTab({
title: L('Cases'),
icon: '/images/KS_nav_views.png',
window: win2
});
win2.containingTab = tab2;
var tab3 = Ti.UI.createTab({
title: L('Leads'),
icon: '/images/KS_nav_views.png',
window: win3
});
win3.containingTab = tab3;
var tab4 = Ti.UI.createTab({
title: L('Resources'),
icon: '/images/KS_nav_mashup.png',
window: win4
});
win4.containingTab = tab4;
//Load Initial Login tab
self.addTab(tab1);
//If Login is successful then the below even will fire and the other tabs will be loaded
Ti.App.addEventListener('grantEntrance', function(event)
{
win2.name = event.name;
win2.email = event.email;
self.addTab(tab2);
self.addTab(tab3);
self.addTab(tab4);
self.removeTab(tab1);
});
return self;
};
module.exports = AppTabGroup;
以下是我的CaseWindow.js标签
function AppWindow(title) {
var Main = Ti.UI.createWindow({
title:title,
backgroundColor:'white'
});
//Closed Case Button
var ccButton = Titanium.UI.createButtonBar({
labels:['Closed'],
backgroundColor:'#336699'
});
Main.setLeftNavButton(ccButton);
//New Case Button
var ncButton = Titanium.UI.createButtonBar({
labels:['New Case'],
backgroundColor:'#336699'
});
Main.setRightNavButton(ncButton);
ncButton.addEventListener('click', function() {
//containingTab attribute must be set by parent tab group on
//the window for this work
Main.containingTab.open(Ti.UI.createWindow({
title: L('newCaseWindow'),
backgroundColor: 'white'
}));
});
var msg = Titanium.UI.createLabel({
text:"Your Name is " + win.name,
//text:"You have successfully logged in. Upon logging in we sent back your email address and your name. You can pass all kinds of data simply by creating objects on your window.\n\nYour email is:\n" + email + "\n\nyour name is:\n" + name,
top:10,
left:10,
width:300,
height:'auto'
});
Main.add(msg);
return Main;
};
module.exports = AppWindow;
答案 0 :(得分:2)
app.js文件中定义的变量应该可以在所有其他JS文件中使用。您应该为这些全局变量创建命名空间,以确保它们不会干扰任何其他变量。
这是一个如何做到这一点的例子。在app.js中:
var MyGlobalVars = {
email: null,
name: null
};
然后,您可以通过引用来从应用程序的任何位置获取和设置这些值:
MyGlobalVars.email = 'me@gmail.com';
alert('My email is: '+MyGlobalVars.email);
但是,这些值不会存储在您应用的执行之间。如果您停止应用程序并再次启动它,那么这些变量将会丢失,直到您再次设置它们为止。如果您希望存储信息以便在应用程序重新启动后再次访问它们,可以使用Ti.App.Properties来存储它们。
这里有关于存储信息的不同方式的信息:
https://wiki.appcelerator.org/display/guides/Working+with+Local+Data+Sources