钛合金：从另一个控制器调用控制器功能 [英] titanium alloy: calling controller function from another controller

问题描述

使用SDK 3.2.0

Using SDK 3.2.0

我有一个索引控制器，该控制器定义了用于设置Android菜单的功能。
我想从整个应用程序嵌套加载的各种控制器中调用该函数。
代码：

I have a index controller that defines a function to set Android Menus. I want to call that function from a variety of controllers that are nested loaded throughout the App. Code:

//index.js
exports.setMenus = function(enabled) {
        var activity = $.index.getActivity();
        activity.onCreateOptionsMenu = function(e){
           /...
        };
        activity.onPrepareOptionsMenu = function(e) {
           /...
        };
        activity.invalidateOptionsMenu();
}; 
Alloy.Globals.Index = $;

然后，在 home控制器内部 ，我尝试这样做：

Then, way after, inside home controller, I try this:

function startRefresh() {
    //...
    Alloy.Globals.Index.setMenus(true); 
}
$.on('focus', startRefresh);

收到以下错误消息：

[ERROR] :  TiExceptionHandler: (main) [1,40482] - In alloy/controllers/home.js:8,29
[ERROR] :  TiExceptionHandler: (main) [0,40482] - Message: Uncaught TypeError: Obje
ct #<Controller> has no method 'setMenus'
[ERROR] :  TiExceptionHandler: (main) [0,40482] - Source:         Alloy.Globals.Ind
ex.setMenus(true);

我遵循了。我想使用导出，因为调用setMenus的控制器不是索引的子级，而是更深层的嵌套。我的意思是，我试图避免在控制器之间传递参数。

I have followed instructions from this answer. I want to use exports because the controllers calling setMenus are not children of index, they are deeper nested. I mean, I'm trying to avoid passing arguments between controllers.

为什么未导出setMenus？

Why setMenus is not been exported?

工作原理：

//index.js
exports.setMenus = function(enabled) {
        var activity = $.index.getActivity();
        //...
}; 
Alloy.Globals.setMenus = setMenus;

和

//home.js
function startRefresh() {
    //...
    Alloy.Globals.setMenus(true); 
}
$.on('focus', startRefresh);

推荐答案

如果要从多种方法中调用函数控制器，然后您可以在 alloy.js
中编写该函数，例如：

If you want to call a function from a variety of controllers then you can write that function in alloy.js for ex:

Alloy.Globals.someGlobalFunction = function（）{
alert（ Hello）;
};

现在您可以调用该函数，例如 Alloy.Globals.someGlobalFunction（） ;

and now you cal call the function anywhere like Alloy.Globals.someGlobalFunction();

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