TableLayout crushes button

问题

I'm experiencing a strange issue with a TableLayout next to a Button. This is the XML:

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">   
    <TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/tableLayout1"
        android:stretchColumns="*"              
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1" >    
        <TableRow
                android:id="@+id/tableRow1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" >    
                <TextView
                android:id="@+id/textView1"
                android:text="Column 1" />
                <Button
                    android:id="@+id/button1"
                    android:text="Column 2" />
        </TableRow>
    </TableLayout>
    <Button  
        android:id="@+id/button2"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content" 
        android:layout_weight="1"           
        android:text="Button 2" />                          
</LinearLayout> 

And this is what I get:

This is confusing me. As you can see, both the Button and the TableLayout have a layout_weight of 1. So I'd expect them to have the same width inside the LinearLayout but for some reason, the TableLayout takes up much more space and pushes the button all the way to the right.

How can I have the additional space available in the LinearLayout distributed among the TableLayout and the Button according to the value set in layout_weight please?

Note that I don't want to use a RelativeLayout or ConstraintLayout. I'm specifically looking for a LinearLayout solution.

回答1:

Just add this to your parent. and make width 0dp of both child

android:weightSum="2"

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:weightSum="2">

    <TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/tableLayout1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:stretchColumns="*">

        <TableRow
            android:id="@+id/tableRow1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <TextView
                android:id="@+id/textView1"
                android:text="Column 1" />

            <Button
                android:id="@+id/button1"
                android:text="Column 2" />
        </TableRow>
    </TableLayout>

    <Button
        android:id="@+id/button2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Button 2" />
</LinearLayout> 

回答2:

set android:layout_width="0dp" for both Button and TableLayout

来源：https://stackoverflow.com/questions/51611175/tablelayout-crushes-button