protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.intro);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
Button btnStart = (Button) findViewById(R.id.Button01);
btnStart.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
setContentView(R.layout.activity_main);
}
});
}
}

public void closebutton(View view)
{
GridLayout grid = (GridLayout)findViewById(R.id.grid);
grid.setVisibility(View.INVISIBLE);
}

메인이 actiivity_main에 suerfaceview 깔고 그 위에다 gridlayout써서 버튼 이벤트하고 싶은데 어떻게 하냐

버튼 누르면 숨기고싶은데