Android Button サイズの設定 コード
import android.widget.LinearLayout;
~
LinearLayout.LayoutParams buttonLayoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
~
final ImageButton button1 = (ImageButton) findViewById(R.id.button1);
button1.setScaleType(ImageButton.ScaleType.FIT_XY);
int buttonWidth = (int)(100);
int buttonHeight = (int)(100);
buttonLayoutParams = new LinearLayout.LayoutParams(buttonWidth, buttonHeight);
button1.setLayoutParams(buttonLayoutParams);