1. Yes; it s defined between the braces.
2. Yes, except that it s an interface, not a class.
3. Yes.
4. You cannot add class-level annotations.
   @Override is a method-level annotation, which works fine.

基本上,这套法典构成了一种由汇编者为你所欲知的类别,因此,你需要全心全意地关注其命名。 这一班级将安装“OnClickListener”接口,并按接口要求,控制Click(View)方法的实施。

因此,你的狙击手可以这样作:

class OnClickListenerThingy01 implements OnClickListener { // name is invented from the top of my head and corresponds actual name manging in no way
    @Override
    public void onClick(View view) {
        mTts.speak(words.getText().toString(), TextToSpeech.QUEUE_ADD, null);
    }
}
speakBtn.setOnClickListener(new OnClickListenerThingy01());

The @Override annotation is not place on the category se - which has no declaration in You code the annotation can be supplemented, being codificationer- produced - but on the methods.

The @Override annotation is used to mark overrides (how surprising) and method implementations. Its main use is to generate a compiler error if the signature of the overridden method changes, but you fail to update the overriding declaration accordingly, so that you won t get really surprised when you overrides fail to work, because, say, what was overridden was renamed.

如果在接口实施方面,如果你忘记全面实施接口,汇编者将产生错误,因此“Override”可能看起来是多余的,但并非多余。 事实上,在您的法典中,不依赖的方法(例如,从接口中删除方法声明)赢得了一定停留,这是一件很 n的事情。

虽然必须指出的是,像Eclipse这样的民主选举学会很可能使这些关切无效,因为所提供的辅助工具足以避免这种实地工作。 任何途径,@Override,在使用时,在你的方法上都很 n。

在这里,为改写你的幻灯,使其更加清晰地“到”:

class MyOuterClass {
    private class MyOnClickListener implements OnClickListener {
        @Override
        public void onClick(View view) {
            mTts.speak(words.getText().toString(), TextToSpeech.QUEUE_ADD, null);
        }
    }

    // later (inside some method)...
        speakBtn.setOnClickListener(new MyOnClickListener());
}

• The inner class is defined right after new OnClickListener().

在该守则中,有人想说,奥克罗赖斯特(Lstener)是名副其实的。 如同你所认为,类别定义也放在方括号内。

• OnClickListener is a super class from which the inner class is derived.

否

• The (anonymous) inner class has only one member function: OnClick().

情况并非如此。 它可以拥有更多的成员职能。

• What is @Override inside the definition of the inner class? If this is an annotation, then I am confused as this answer states that anonymous inner classes cannot be annotated.

rel=“nofollow”> 超过用于对方法进行实时错误核对。 您可使用匿名内部班级方法说明。