java - 以编程方式为 Android 按钮添加边距

Question

我有这两个按钮，我想动态添加到可能的布局中。

Button settingsButton = new Button(this);
settingsButton.setText("Settings");
View view = findViewById(R.id.content_frame);
int width = view.getWidth() / 5;
int height = view.getHeight() / 5;
settingsButton.setLayoutParams(new LinearLayout.LayoutParams(Math.max(width, height), Math.min(width, height)));
((ViewGroup) view).addView(settingsButton);

Button entryButton = new Button(this);
entryButton.setText("add Entry");
entryButton.setLayoutParams(new LinearLayout.LayoutParams(Math.max(width, height), Math.min(width, height)));

((ViewGroup) view).addView(entryButton);

现在为了使按钮不会出现在彼此之上，我尝试给第二个按钮留出边距，例如:

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(Math.max(width, height), Math.min(width, height));
params.setMargins(Math.max(width, height), 0, 0, 0);

然后或者

((ViewGroup) view).addView(entryButton, params);

或

entryButton.setLayoutParams(params);
((ViewGroup) view).addView(entryButton);

两者都没有改变任何东西。有任何想法吗？ 谢谢!

Answer 1

你可能必须使用

ViewGroup.MarginLayoutParams.setMargins

做这样的事情就可以了:

LinearLayout linearLayout = new LinearLayout(this);
linearLayout.setOrientation(LinearLayout.HORIZONTAL);

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
     LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);

layoutParams.setMargins(10, 10, 10, 10);

Button button = new Button(getActivity());
button.setText("My Button");
linearLayout.addView(button, layoutParams);