即使在设置android：layout_width =“ match_parent”时，Horizo​​ntalScrollView的子级也不匹配其父级视图的宽度

Question

I want to display a horizontal list of scrollable buttons at top of the phone screen containing 30 items, for this purpose I am using a HorizontalScrollView with a LinearLayout with "horizontal" orientation as it's child but the linear layout is not taking up the entire phone width even on setting its width as "match-parent". Here's the code :

<HorizontalScrollView
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        android:layout_gravity="center">
        <GridView
            android:id="@+id/gridView_horizontal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:stretchMode="columnWidth" />
    </LinearLayout>
</HorizontalScrollView>

Here is shown in the image that linear layout is not taking up the entire space and LinearLayout is only covering some of the space. Also on changing the size to a fixed size, I noticed that the HorizontalScrollView was actually behaving like a vertical Scroll View only.

NOTE: Also if there is an alternative way to display a horizontal list of buttons with 30 items with numbers from 1 to 30 on it, please suggest it.

Answer 1

为了轻松实现这一点，您可以将Recyclerview与Horizo​​tanl Layout Manager结合使用。

recycler_view.setLayoutManager(new LinearLayoutManager(MainActivity.this, LinearLayoutManager.HORIZONTAL, false));

Answer 2

I don't think you need a HorizontalScrollView with a nested LinearLayout for what you are trying to achieve. It would be a better idea to simply use a horizontal RecyclerView if your button layouts are similar and the functionality of the buttons is similar too. Refer to this answer for help https://stackoverflow.com/a/40584425/9119277