Android 布局权重 [英] Android Layout Weight

问题描述

我是 Android 开发的新手，我有一个关于在线性布局中设置权重的问题.

I am new to Android development and I have a question about setting weight in a linear layout.

我正在尝试使用两个自定义按钮和一个自定义编辑文本创建一行.编辑文本应该只占用与其内容一样多的空间，两个按钮应该水平扩展以填充行中的其余可用空间.像这样...

I am trying to create a row with two custom buttons and a custom edit text. The edit text should only take up as much room as its content, and the two buttons should expand horizontally to fill the rest of the available space in the row. Like this...

| [#Button++#] [#Button--#] [et] |

经过多次尝试，这是我能得到的最接近我想要的东西，尽管它看起来过于复杂.

After several attempts this is the closest I can get to what I want, even though it seems overly complicated.

| [Button] [Button] [###ET###] |

<小时>

<LinearLayout 
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center_horizontal|center_vertical"
    android:layout_weight="1"
    >

    <LinearLayout 
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center_horizontal|center_vertical"
        >
        <RelativeLayout 
            android:id="@+id/btn_plus_container" 
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content"
            >
            <ImageButton 
                android:layout_height="wrap_content"
                android:layout_width="fill_parent" 
                android:id="@+id/btn_plus" 
                android:background="@drawable/btn"
                android:layout_centerInParent="true"
                ></ImageButton>
            <TextView 
                android:textColor="#FAFAF4"
                android:id="@+id/tv_dice_plus" 
                android:text="@string/tv_plus" 
                android:layout_width="wrap_content" 
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                ></TextView>
        </RelativeLayout>
    </LinearLayout>
    <LinearLayout 
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center_horizontal|center_vertical"
        >
        <RelativeLayout 
            android:id="@+id/btn_minus_container" 
            android:layout_width="fill_parent" 
            android:layout_height="wrap_content"
            >
            <ImageButton 
                android:layout_height="wrap_content"
                android:layout_width="fill_parent" 
                android:id="@+id/btn_minus" 
                android:background="@drawable/btn"
                android:layout_centerInParent="true"
                ></ImageButton>
            <TextView 
                android:textColor="#FAFAF4"
                android:id="@+id/btn_minus" 
                android:text="@string/tv_minus" 
                android:layout_width="wrap_content" 
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                ></TextView>
        </RelativeLayout>
    </LinearLayout>
    <LinearLayout 
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center_horizontal|center_vertical"
        >
        <EditText 
            android:textColor="#FAFAF4"
            android:text="@string/et_output" 
            android:id="@+id/et_output" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"
            android:inputType="number"
            android:selectAllOnFocus="true" 
            android:minWidth="50sp"         
            android:maxWidth="50sp"
            android:background="@drawable/tv_black_background3"
            android:textColorHighlight="#c30505"
            ></EditText>
    </LinearLayout>
</LinearLayout>

据我所知，为保持按钮的线性布局设置 [android:layout_weight="2"] 应该使它们比编辑文本占用更多的空间，但对我来说却相反，使它们的大小都减半.

As I understand setting [android:layout_weight="2"] for the linear layouts holding the buttons should make them take up more room than the edit text, but it does the opposite for me, making them both half the size.

| [Btn] [Btn] [#####et#####] |

我尝试了很多不同的组合，我什至记不起它们，但没有一个奏效.

I have tried so many different combinations I can't even remember them, and none have worked.

推荐答案

它不起作用，因为您使用 fill_parent 作为宽度.当总和大于 LinearLayout 时，权重用于分配剩余的空白空间或带走空间.将您的宽度设置为 0dip 即可.

It doesn't work because you are using fill_parent as the width. The weight is used to distribute the remaining empty space or take away space when the total sum is larger than the LinearLayout. Set your widths to 0dip instead and it will work.

这篇关于Android 布局权重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！