如何设置在code RelativeLayout的布局PARAMS不在XML [英] How to set RelativeLayout layout params in code not in xml

问题描述

例如我想补充3按钮在屏幕上的一个对准左一居中，最后一个右对齐

For example I want to add 3 button on screen one align left, one align center, last one align right

我如何设置他们在code的布局，而不是在XML？

How can I set their layout in code, not in XML?

推荐答案

只是一个基本的例子：

RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);
Button button1;
button1.setLayoutParams(params);

params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.RIGHT_OF, button1.getId());
Button button2;
button2.setLayoutParams(params);

正如你所看到的，这是你必须做的：

As you can see, this is what you have to do:

1. 创建一个 RelativeLayout.LayoutParams 对象。
2. 使用 addRule（INT）或 addRule（INT，INT）来设置的规则。第一种方法用于添加不需要值的规则。
3. 设置的参数的视图（在这种情况下，每个按钮）。

1. Create a RelativeLayout.LayoutParams object.
2. Use addRule(int) or addRule(int, int) to set the rules. The first method is used to add rules that don't require values.
3. Set the parameters to the view (in this case, to each button).

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