如何以编程方式更改网格布局的背景？

Question

public class TwoplayerActivity extends AppCompatActivity {
GridLayout gridLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
     ---
    gridlayout= (GridLayout)findViewById(R.id.gridLayout);
    gridLayout.setBackgroundResource(R.drawable.boards2);
    }
}  

这不起作用。我认为这适用于其他布局。

Answer 1

尝试：

gridLayout.setBackground(getResources().getDrawable(R.drawable.boards2));

但它也应与.setBackgroundResource(...)一起使用。