Android Button setOnClickListener 设计 [英] Android Button setOnClickListener Design

问题描述

我正在构建一个 Android 应用程序.我注意到我在每个类中都创建了许多与此类似的代码重复:

I am building an Android Application. I've noticed that I am creating many repetitions of code similar to this in each of my classes:

Button buttonX = (Button)findViewById(R.id.buttonXName);
// Register the onClick listener with the implementation above
buttonX.setOnClickListener(new OnClickListener() {
    public void onClick(View v)
    {
        //DO SOMETHING! {RUN SOME FUNCTION ... DO CHECKS... ETC}
    } 
});

我现在有 15 个按钮，这让我的代码变得丑陋.有没有人有关于如何将所有这些代码转换为更有效的内容的课程或一些示例，以便我可以:

I now have fifteen buttons and this is making my code ugly. Does anyone have a class or some examples on how I can turn all these codes into something more efficient, so I can:

1. 创建按钮对象{Button buttonX (Button)findViewById(R.id.buttonXName);}
2. 设置监听器{buttonX.setOnClickListener(new OnClickListener()}
3. 判断是否被点击{public void onClick(View v)}
4. 然后为每个按钮运行特定的代码?

如果有人知道的话，我会很感激.

If anyone knows anything, I'd appreciate it.

推荐答案

如果您的目标是 1.6 或更高版本，您可以使用 android:onClick xml 属性 删除一些重复的代码.请参阅这篇博文罗曼盖伊.

If you're targeting 1.6 or later, you can use the android:onClick xml attribute to remove some of the repetitive code. See this blog post by Romain Guy.

<Button 
   android:height="wrap_content"
   android:width="wrap_content"
   android:onClick="myClickHandler" />

在 Java 类中，使用以下代码行:

And in the Java class, use these below lines of code:

class MyActivity extends Activity {
    public void myClickHandler(View target) {
        // Do stuff
    }
}

这篇关于Android Button setOnClickListener 设计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！