如何在HorizontalScrollView中正确显示LinearLayout中的按钮？

// 创建LinearLayout
LinearLayout linearLayout = new LinearLayout(context);
linearLayout.setOrientation(LinearLayout.HORIZONTAL);

// 创建按钮并添加到LinearLayout中
Button button1 = new Button(context);
button1.setText("按钮1");
linearLayout.addView(button1);

Button button2 = new Button(context);
button2.setText("按钮2");
linearLayout.addView(button2);

Button button3 = new Button(context);
button3.setText("按钮3");
linearLayout.addView(button3);

// 创建HorizontalScrollView并将LinearLayout作为子视图添加进去
HorizontalScrollView scrollView = new HorizontalScrollView(context);
scrollView.addView(linearLayout);

// 将HorizontalScrollView添加到布局中
parentLayout.addView(scrollView);