如何调用Button ellement的另一个activity / class onClick（）中定义的方法？ [英] How to call a method defined in another activity/class onClick() of a Button ellement?

问题描述

我正在使用Android Studio（最低API为15 ）进行主要活动的布局，并在其上定义了一些XML按钮。

I am working on the Layout of my main activity with Android Studio (lowest API is 15), and have defined a few XML Buttons on it.

该程序的想法是通过添加，显示和清除一组按钮来编辑单词列表。 （有一个EditText用于添加，但这对于问题并不重要）。但是考虑到高内聚的想法，我已经定义了这个列表以及在另一个普通类中操作它的方法，这个类称为WordList（仍然扩展了Activity ），所以当试图调用按钮的onClick属性时，它找不到它们。

The idea of the program is to edit a list of words by adding to, displaying, and clearing it with a set of buttons. (There is an EditText for adding, but that's not important for the question). But with the idea of high cohesion in mind, I have defined this list and the methods that manipulate it in another plain class called WordList (which still extends Activity), and so when trying to invoke the onClick property of a button, it cannot find them.

android:onClick="addWord"

'MainActivity'中缺少方法'addWord'或签名错误...

Method 'addWord' is missing in 'MainActivity' or has incorrect signature...

有没有办法制作布局或单个元素点（或获取其数据上下文 ）来自另一个类，还是反对Android的整个结构，我应该把它放在原来的活动中？

Is there a way to make the layout, or the individual element point (or get its data context) from another class, or is that against the whole structure of Android and I should just put it in its original activity?

推荐答案

您是否使用该方法的正确签名？

Are you using the correct signature for the method?

使用 onClick 属性的方法定义必须满足以下要求：

Methods defines using the onClick attribute must meet the following requirements:

• 必须公开


• 必须具有无效返回值


• 必须将View对象作为参数（这是被点击的视图）

喜欢

public void addWord(View view) {
    //your action
}

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