我有一个需要在 Appcelerator Titanium 上开发的 iOS 应用程序中修复的错误。
我一直在使用 customTabBar（在 GitHub 上可用）来创建一个定制的 tabBar，效果很好！
唯一的小问题是它删除了在图标上选项卡并返回到根窗口的选项（就像在 iOS 中适当的原生 tabBar 一样）。
因此，如果我在我的应用程序中向下钻取 3 或 4 个窗口，点击选项卡图标没有任何作用，我必须通过多次点击返回导航到开头。
这是我正在使用的完整 customTabBar.js 脚本：
CustomTabBar = function(settings) {
var tabBarItems = [];
var tabCurrent = 2;
var resetTabs = function() {
for(var i = 0; i < tabBarItems.length; i++) {
// Clear all the images to make sure only
// one is shown as selected
tabBarItems[i].image = tabBarItems[i].backgroundImage;
}
};
var assignClick = function(tabItem) {
tabItem.addEventListener('click', function(e) {
// Just fetching the 'i' variable from the loop
var pos = e.source.pos;
if (tabCurrent == pos) {
// TODO
// Change back to root window, like the native tab action.
// code must go in here
return false;
}
// Switch to the tab associated with the image pressed
settings.tabBar.tabs[pos].active = true;
tabCurrent = pos;
// Reset all the tab images
resetTabs();
// Set the current tab as selected
tabBarItems[pos].image = settings.imagePath + settings.items[pos].selected;
});
};
// Create the container for our tab items
var customTabBar = Ti.UI.createWindow({
height: 48,
backgroundImage:'images/tabbarbackground.png',
bottom: 0
});
for(var i = 0; i < settings.items.length; i++) {
// Go through each item and create an imageView
tabBarItems[i] = Titanium.UI.createImageView({
// background is the default image
backgroundImage: settings.imagePath + settings.items[i].image,
width: settings.width,
height: settings.height,
left: settings.width * i
});
// Pass the item number (used later for changing tabs)
tabBarItems[i].pos = i;
assignClick(tabBarItems[i]);
// Add to the container window
customTabBar.add(tabBarItems[i]);
}
// Display the container and it's items
customTabBar.open();
// Set the first item as current :)
resetTabs();
//tabBarItems[0].image = settings.imagePath + settings.items[0].selected;
tabBarItems[2].image = settings.imagePath + settings.items[2].selected;
return {
hide: function() { customTabBar.hide(); },
show: function() { customTabBar.show(); }
};
};
包含我需要添加的位的函数已被标记，但只是空的。这里是：
var assignClick = function(tabItem) {
tabItem.addEventListener('click', function(e) {
// Just fetching the 'i' variable from the loop
var pos = e.source.pos;
if (tabCurrent == pos) {
// TODO
// Change back to root window, like the native tab action.
// code must go in here
return false;
}
// Switch to the tab associated with the image pressed
settings.tabBar.tabs[pos].active = true;
tabCurrent = pos;
// Reset all the tab images
resetTabs();
// Set the current tab as selected
tabBarItems[pos].image = settings.imagePath + settings.items[pos].selected;
});
};