in android

如何在Android Studio的GridLayout中使按钮分布于整个网格,主要使用以下几个属性:

app:layout_columnWeight=”1″
app:layout_rowWeight=”1″
app:layout_gravity=”fill”

部分XML代码如下:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <androidx.gridlayout.widget.GridLayout
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <Button
            android:id="@+id/hello"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="buttonTapped"
            android:text="Hello"
            app:layout_column="0"
            app:layout_columnWeight="1"
            app:layout_rowWeight="1"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_gravity="fill"
            app:layout_row="0" />
...以下省略

效果图如下:

Gridlayout

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