如何以编程方式设置layout_gravity? [英] How to set layout_gravity programmatically?

问题描述

我的问题很简单

如何以编程方式设置我的按钮layout_gravity?

How to set my buttons layout_gravity programmatically?

我在互联网上找到了这个，但是它只是抛出了一个Nullpointer异常:

I found this on internet, but it simply throws me a Nullpointer exception:

 Button MyButton = new Button(this);

    LinearLayout.LayoutParams  lllp=(LinearLayout.LayoutParams)MyButton.getLayoutParams();
    lllp.gravity=Gravity.RIGHT;
    MyButton.setLayoutParams(lllp); 


    MyLinearLayout.addView(MyButton);

有解决方案吗?

推荐答案

Java

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
params.weight = 1.0f;
params.gravity = Gravity.TOP;

button.setLayoutParams(params);

科特琳

val params = LinearLayout.LayoutParams(
    LinearLayout.LayoutParams.WRAP_CONTENT,
    LinearLayout.LayoutParams.WRAP_CONTENT
).apply {
    weight = 1.0f
    gravity = Gravity.TOP
}

有关重力值以及如何设置重力的信息，请检查重力

For gravity values and how to set gravity check Gravity.

基本上，应该根据父级选择LayoutParams.可以是RelativeLayout，LinearLayout等...

Basically, you should choose the LayoutParams depending on the parent. It can be RelativeLayout, LinearLayout etc...

这篇关于如何以编程方式设置layout_gravity?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！