Android GridLayout 水平居中

Android GridLayout center horizontally

提问by Tomasz

I'm trying to create a GridLayout with 2 columns which will be centered.

我正在尝试创建一个带有 2 列居中的 GridLayout。

My avtual design is:

我的实际设计是：

<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:custom="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    custom:rowCount="4"
    custom:columnCount="2"
    android:orientation="horizontal">
    <TimeTableKeeper.Tile
        android:layout_width="75dp"
        android:layout_height="75dp"
        android:gravity="top|left"
        android:background="#00FF00"
        custom:color="green"
        custom:layout_row="0"
        custom:layout_column="0" />
    <TimeTableKeeper.Tile
        android:layout_width="75dp"
        android:gravity="top|left"
        android:layout_height="75dp"
        android:background="#00FF00"
        custom:color="blue"
        custom:layout_row="0"
        custom:layout_column="1" />
</GridLayout>

And it looks like:

它看起来像：

And I would like to have this buttons in the center and perfectly with spacing between them.

我想把这个按钮放在中间，并且它们之间有完美的间距。

Is it possible?

是否可以？

--EDIT:

- 编辑：

I have also tried putting it into LinearLayout, without results:

我也试过把它放到 LinearLayout 中，没有结果：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical">
    <GridLayout xmlns:custom="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        custom:rowCount="4"
        custom:columnCount="2"
        android:orientation="horizontal"
        android:gravity="center"
        android:layout_gravity="center">
        <TimeTableKeeper.Tile
            android:layout_width="75dp"
            android:layout_height="75dp"
            android:background="#00FF00"
            custom:color="green"
            custom:layout_row="0"
            custom:layout_column="0" />
        <TimeTableKeeper.Tile
            android:layout_width="75dp"
            android:layout_height="75dp"
            android:background="#00FF00"
            custom:color="blue"
            custom:layout_row="0"
            custom:layout_column="1" />
    </GridLayout>
</LinearLayout>

回答by razz

Make the grid wrap around its content horizontally with layout_width="wrap_content"and set it's layout_gravityto center:

使网格水平环绕其内容layout_width="wrap_content"并将其设置layout_gravity为center：

<GridLayout
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    // ......
    >

回答by njzk2

From GridLayout documentation:

从GridLayout 文档：

GridLayout's distribution of excess space is based on priority rather than weight.

GridLayout 对多余空间的分配是基于优先级而不是权重。

(...)

（……）

To make a column stretch, make sure all of the components inside it define a gravity.

要使柱拉伸，请确保其中的所有组件都定义了重力。

So apparently you need to set the layout_gravityto android:layout_gravity="top|center"(I have not tested this, but from the documentation it should be along these lines.)

所以显然你需要设置layout_gravity为android:layout_gravity="top|center"（我没有测试过这个，但从文档中它应该是沿着这些路线的。）

回答by Jazib

You're almost there. I think this will do the job:

您快到了。我认为这将完成这项工作：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<GridLayout

    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    custom:rowCount="4"
    custom:columnCount="2"

    android:layout_gravity="center_horizontal"
    android:orientation="horizontal">
    <TimeTableKeeper.Tile
        android:layout_width="75dp"
        android:layout_height="75dp"
        android:background="#00FF00"
        custom:color="green"
        custom:layout_row="0"
        custom:layout_column="0" />
    <TimeTableKeeper.Tile
        android:layout_width="75dp"
        android:layout_height="75dp"
        android:background="#00FF00"
        custom:color="blue"
        custom:layout_row="0"
        custom:layout_column="1" />
</GridLayout>
</FrameLayout>

回答by Big Disgrace

The code in below solved my problem.

下面的代码解决了我的问题。

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

 <GridLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:layout_centerHorizontal="true"
    android:layout_margin="30dp"
    android:columnCount="3"
    android:rowCount="4"
    android:useDefaultMargins="true">

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

     <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>


 </GridLayout>

 </RelativeLayout>

回答by Li Xang

copy this example for calculator layout =)

复制此示例用于计算器布局 =)

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    >
    <!-- android:useDefaultMargins="true" (OPTIONAL) -->
    <GridLayout
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:useDefaultMargins="true" 
        >
        <Button
            android:layout_column="0"
            android:layout_row="0"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="/"/>
        <Button
            android:layout_column="1"
            android:layout_row="0"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="1"/>
        <Button
            android:layout_column="2"
            android:layout_row="0"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="2"/>
        <Button
            android:layout_column="3"
            android:layout_row="0"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="3"/>
        <Button
            android:layout_column="0"
            android:layout_row="1"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="*"/>
        <Button
            android:layout_column="1"
            android:layout_row="1"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="4"/>
        <Button
            android:layout_column="2"
            android:layout_row="1"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="5"/>
        <Button
            android:layout_column="3"
            android:layout_row="1"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="6"/>
        <Button
            android:layout_column="0"
            android:layout_row="2"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="-"/>
        <Button
            android:layout_column="1"
            android:layout_row="2"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="7"/>
        <Button
            android:layout_column="2"
            android:layout_row="2"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="8"/>
        <Button
            android:layout_column="3"
            android:layout_row="2"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="9"/>
        <Button
            android:layout_column="0"
            android:layout_row="3"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="+"/>
        <Button
            android:layout_column="1"
            android:layout_row="3"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="0"/>
        <Button
            android:layout_column="2"
            android:layout_row="3"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="00"/>
        <Button
            android:layout_column="3"
            android:layout_row="3"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:text="="/>

    </GridLayout>


</LinearLayout>