Android RelativeLayout-如何定位? [英] Android RelativeLayout -- how to position?

问题描述

我想要这样的布局:

I want a Layout like this:

但是我的代码不起作用.我无法实现此版式，并且我不知道到目前为止所做的事情有什么问题.

But my code doesn't work. I can't achieve this Layout, and I don't know what is wrong with what I've done so far.

这是我到目前为止所拥有的-layout_gravity可以吗?还是需要在RelativeLayout中设置它?

Here's what I have so far -- Is the layout_gravity OK? Or does it need to be set it in the RelativeLayout?

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

    <RelativeLayout     
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical">

        <TextView
            android:id="@+id/topText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="20dip"
            android:layout_gravity="top" />

        <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/centerLayout"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:orientation="horizontal"
            android:layout_below="@id/topText">     

            <ImageButton
                android:id="@+id/lektionBackButton"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"

                android:src="@drawable/back"
                android:layout_gravity="left"/>  
            <ImageView
                android:id="@+id/centerImage"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:cropToPadding="true"
                android:layout_gravity="center"/>
            <ImageButton 
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/lektionForwardButton"
                android:src="@drawable/forward"
                android:layout_gravity="right"/>        
         </LinearLayout>    

         <TextView
            android:id="@+id/bottomText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="20dip"
            android:layout_below="@id/centerLayout"
            android:layout_gravity="bottom" />
    </RelativeLayout>
</RelativeLayout>

推荐答案

您完全不需要使用重力或内部的LinearLayout.而是在子级上使用layout_alignParentTop，layout_alignParentLeft，layout_alignParentRight，layout_alignParentBottom，layout_centerInParent和layout_centerVertical.

You don't need to use gravity or the inner LinearLayout at all for this. Instead use layout_alignParentTop, layout_alignParentLeft, layout_alignParentRight, layout_alignParentBottom, layout_centerInParent and layout_centerVertical on the children.

阅读 RelativeLayout教程可能对您很有用..

It might be useful for you to go through the RelativeLayout tutorial.

这篇关于Android RelativeLayout-如何定位?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！