Androidのイベントリスナ…

gistfile1.java

package com.example.listener;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // findViewById(R.id.button1).setOnClickListener("onButton1Click"); とか
        // findViewById(R.id.button1).setOnClickListener("onButton1Click", this);
        // とかが全イベントで標準でできればいいような…
        setOnClickListener(findViewById(R.id.button1), "onButton1Click");
    }

    public void onButton1Click(View v) {
        Toast.makeText(this, "Hello !", Toast.LENGTH_LONG).show();
    }

    public void setOnClickListener(final View view, final String handlerName) {
        view.setOnClickListener(new OnClickListener() {
            private Method handler;

            public void onClick(View v) {
                if (handler == null)
                    try {
                        handler = view.getContext().getClass()
                                .getMethod(handlerName, View.class);
                    } catch (NoSuchMethodException e) {
                        // throw ...
                        return;
                    }

                try {
                    handler.invoke(view.getContext(), view);
                } catch (IllegalArgumentException e) {
                    // throw ...
                } catch (IllegalAccessException e) {
                    // throw ...
                } catch (InvocationTargetException e) {
                    // throw ...
                }
            }
        });
    }
}