如何在Android布局中实现Button的自动宽度 [英] How to achieve automatic width of Button in Android layout

问题描述

我有一些垂直列出的按钮，我需要所有按钮都具有相同的宽度，而且还要在其中显示所有文本.

I have a few Button listed vertically and I need all of them to have the same width, but also to display all text inside.

基本上，我都需要宽度作为最大宽度的包装宽度.

Basically I need width for all of them as a wrapped width of the largest one.

希望我解释得很好.

现在...我已经有一种布局可以在我的三星Galaxy S2(4.1.2)上使用，但是在朋友的电话上-三星GT-N7100(note2)和android 4.4.2-它无法正常工作-有些文本不会显示在按钮中.

Now... I already have one layout that is working on my Samsung Galaxy S2 (4.1.2), but on friend's phone - Samsung GT-N7100 (note2) and android 4.4.2 - it is not working - some text is not displayed in the Button.

这是我的布局:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:text="word"
        android:layout_width="wrap_content"
        android:layout_height="48dp"
        android:textSize="30sp"
        android:gravity="center"
        android:layout_centerHorizontal="true"
        android:id="@+id/word"/>

    <TextView
        android:text="14/36\nM: 1"
        android:layout_width="fill_parent"
        android:layout_height="80dp"
        android:id="@+id/score"
        android:layout_toRightOf="@+id/word"
        android:gravity="right|center"
        android:paddingRight="10dp"/>

    <LinearLayout
        android:layout_centerInParent="true"
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/adapter">

        <Button
            android:text="1"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:id="@+id/opt1"/>

        <Button
            android:text="2"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:id="@+id/opt2" />

        <Button
            android:text="3"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:id="@+id/opt3" />

        <Button
            android:text="4"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:id="@+id/opt4" />

        <Button
            android:text="5"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:id="@+id/opt5" />
    </LinearLayout>

    <Button
        android:text="Next"
        android:layout_width="match_parent"
        android:layout_height="48dp"
        android:layout_alignParentBottom="true"
        android:id="@+id/next"/>

</RelativeLayout>

推荐答案

我仅使用XML(无代码)来完成此操作-对于两个TextView.但是同样的技术也应该适用于任意数量的按钮.

I have done this using XML only (no code) - for two TextViews. But the same technique should work for arbitrary number of buttons as well.

• 假设我们有两个TextViews A和B.
• 将每个TextView包裹在LinearLayout(内部仅包含一个元素)中-La和Lb.
• 将每个TextView(A，B)的宽度设置为'wrap_content'，将背景设置为透明
• 将LinearLayouts(La，Lb)宽度设置为"match_parent"，将背景设置为所需的任何颜色/形状
• 将La和Lb包裹在另一个Vertical LinearLayout容器L中，将L的宽度/高度设置为"wrap_content"，将高度设置为"wrap_content"
• 在每个TextView的LinearLayout(La，Lb)上设置填充以使其看起来不错
• 在(La，Lb)上设置边距以创建间距
• 应该这样做.
  注意:请确保每个TextView的背景颜色/形状是通过单个布局容器的背景设置的，而不是通过TextView本身设置的.

• Say we have two TextViews A and B.
• Wrap each TextView in a LinearLayout (with only one element inside) - La and Lb.
• Set each TextView (A,B) width to 'wrap_content', set background transparent
• Set the LinearLayouts (La,Lb) widths to 'match_parent', set background to whatever color/shape you want
• Wrap La and Lb inside another Vertical LinearLayout container L, set the width/height of L to be 'wrap_content', height to 'wrap_content'
• set padding on each TextView's LinearLayout (La, Lb) to make it look good
• set margins on (La, Lb) to create spacing
• That should do it.
  Note: Make sure the background color/shape for each TextView is set via its background of individual layout container and not on the TextView itself.

我知道这个问题是3年前提出的-但是我认为在其他地方，仅涉及XML的解决方案也存在相同/相似的问题.因此希望这对以后的人有所帮助.

I know this question was asked 3 years ago - but I think I saw same/similar questions elsewhere for a solution that involves XML only. So hope this helps someone in the future.

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