Androidノート(3)ボタンにイベントを追加

1.パラメータ内のOnClickListenerを直接newする

Button button1=(Button) findViewById(R.id.button1);// 
    button1.setOnClickListener(new OnClickListener(){
            @Override
            //findViewById View 
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(FirstActivity.this, "haha", Toast.LENGTH_SHORT).show();
            }
        });

2.複数buttonが1つのListenerを共有する

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.first_layout);
        Button button1 = (Button) findViewById(R.id.button1);
        Button button2 = (Button) findViewById(R.id.button2);
        button1.setOnClickListener(new mylistener());
        button2.setOnClickListener(new mylistener());
        }
        // 
        public class mylistener implements OnClickListener{
        public void onClick(View v){
        switch(v.getId()){
        case R.id.button1:Toast.makeText(FirstActivity.this, "button1", Toast.LENGTH_SHORT).show();
        break;
        case R.id.button2:Toast.makeText(FirstActivity.this, "button2", Toast.LENGTH_SHORT).show();
        break;
        }
        }
        }