Android ボタン表示アプリ

package jp.allabout.android;

import android.app.Activity;
import android.os.Bundle;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.view.ViewGroup.LayoutParams;

public class MyAndy extends Activity
{
    /** Called with the activity is first created. */
    @Override
    public void onCreate(Bundle icicle)
    {
        super.onCreate(icicle);

        Button button = new Button(this);
        button.setText("Button");
        setContentView(button, new LayoutParams(LayoutParams.WRAP_CONTENT,
          LayoutParams.WRAP_CONTENT));
    }
}