如何在android的相对布局的底部锚定按钮 [英] How to anchor a button at the bottom of a relative layout in android

问题描述

我是新的android系统的布局结构，我用填充按钮的底部和底部之间有一个小一点的建筑，在底部的一个按钮（居中HORIZ为好）活动负责的可视屏幕。

I'm new to the layout structure in android and I'm tasked with building an activity that has a button at the bottom (centered horiz as well) with a small bit of padding between the bottom of the button and the bottom of the visible screen.

目前的挑战是如何做到这一点的相对布局，使之锚定到同一个点，无论屏幕尺寸

The challenge is how to do this in relative layout and make it anchor to the same spot regardless of screen size

如果任何人都可以点我在正确的方向，这将是伟大的！

If anyone can point me in the right direction that would be great!

推荐答案

借助开发文档有一些样品布局和 API演示项目是伟大的。

The dev docs have some sample layouts and the API Demos project is great too.

布局下面会把底部按钮，但要记住当你添加更多的控制到相对布局，他们将不得不互相尊重。像layout_above此按钮或把这个按钮结束，并确保它具有像Android这样一个属性：layout_below =id_of_other_bottommost_controll

The layout below will put the button at the bottom, but remember as you add more controls to a relative layout they will have to respect each other. like layout_above this button or put this button at the end and make sure it has an attribute like android:layout_below="id_of_other_bottommost_controll"

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent" 
            android:layout_height="fill_parent" >

<Button 
        android:layout_height="wrap_content" android:layout_width="fill_parent" 
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="10dp"
        android:text="button"
        android:layout_centerHorizontal="true"/>
</RelativeLayout>

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