android - 如何在 Android 中以编程方式更改按钮大小？

Question

我正在创建按钮并以编程方式将它们添加到 LinearLayout。但是，我正在努力更改按钮大小。在下面的代码中，无论我在 deleteBtn.setWidth(num) 和 deleteBtn.setHeight(num) 中输入什么数字，都没有任何变化。

private void populateHorizontalLayouts(CustomMessageEvent event) {
    // Need to remove all views each time an user adds a number
    // so that the same number is not rendered multiple times.

    nameAndNumbersLayout.removeAllViews();

    //displayedNamesAndNumbers.add(event.getCustomMessage());
    for(int i =0; i < displayedNamesAndNumbers.size(); i++){
        String displayedNumberAndName = displayedNamesAndNumbers.get(i);

        LinearLayout horizontalLayout = new LinearLayout(view.getContext());
        horizontalLayout.setOrientation(LinearLayout.HORIZONTAL);
        horizontalLayout.setId(i);

        Button deleteBtn = new Button(view.getContext());
        deleteBtn.setId(i);
        deleteBtn.setText("Delete");
        deleteBtn.setWidth(5);
        deleteBtn.setHeight(5);

        TextView nameAndNumView = new TextView(view.getContext());
        nameAndNumView.setId(i);
        nameAndNumView.setText(displayedNumberAndName);

        horizontalLayout.addView(deleteBtn);
        horizontalLayout.addView(nameAndNumView);

        nameAndNumbersLayout.addView(horizontalLayout);
    }
}

我应该写些什么才能使按钮大小发生变化？

Answer 1

您应该应用包含您的Button 的LinearLayout 的LayoutParams。

deleteBtn.setLayoutParams(new LinearLayout.LayoutParams(5, 5));