Android按钮onclick覆盖

Question

我想创建一个CustomButton具有预定义的onClick.事实上,我的目标是做同样的工作

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

有没有办法将其嵌入Listener从Button继承的CustomButton对象？我想要的是CustomButton在我的布局XML文件中创建一个,而不必在我的活动中提到这个按钮,这将给出:

main.xml中:

<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.

Answer 1

你真的很亲密:

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
    }

}