Android按钮onclick覆盖 | Android按钮onclick覆盖

本文介绍了Android按钮onclick覆盖的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想创建一个具有预定义onClick的CustomButton.实际上，我的对象将完成与

I would like to create a CustomButton which has a predefined onClick.In fact, my object would do the same job than

CustomButton mButton = getViewById(..);
mButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
  show_something()
}

是否可以将Listener嵌入到从Button继承的CustomButton对象中?我想要的是在布局XML文件中创建一个CustomButton，而不必在我的活动中提及此按钮，这样可以:

Is there a way to embed the Listener into the CustomButton object that inherits from Button ?What I would like is to create a CustomButton in my layout XML file, and not having to mention this button in my activity, which would give:

main.xml:

<LinearLayout xmlns:"...">
     <com.mypackage.view.CustomButton
         (attributes)/>
</LinearLayout>

CustomButton.java:

class CustomButton extends Button implements... {

@Override
OnClick (or something like that, that's the core of my question, what to put here)
}

myActivity.java

public class myActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    }
}

非常感谢.

推荐答案

您真的很亲密:

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class CustomButton extends Button implements OnClickListener{

    public CustomButton(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    public CustomButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public CustomButton(Context context) {
        super(context);
        init();
    }

    private void init(){
        setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        // Do something
    }

}

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