android - RelativeLayout 或 TableLayout Android 3 按钮

Question

我想做一些简单的事情，1 列中的 3 个按钮，响应式，就像在屏幕上一样。

我应该像在我的代码中那样在 RelativeLayout 上创建它，还是 TableLayout 更好？

如何将 RelativeLayout 链接到顶部和底部，以确保最后一个按钮永远不会超出屏幕底部？

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:showIn="@layout/activity_main"
tools:context=".MainActivity"
android:background="@color/green"
>
<ImageButton
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="NAGRAJ"
    android:id="@+id/nagraj"
    android:src="@drawable/button_sos"
    android:scaleType="fitStart"
    android:layout_alignParentTop="true"
    android:adjustViewBounds="true"
    android:background="@null"
    android:layout_marginBottom="25px"
    android:tag="nagraj"
    />

<ImageButton
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="112"
    android:id="@+id/zadzwon"
    android:layout_below="@+id/nagraj"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:src="@drawable/button_112"
    android:scaleType="fitStart"
    android:background="@null"
    android:adjustViewBounds="true"
    android:layout_marginBottom="25px"/>

<ImageButton
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="ZDJECIE"
    android:id="@+id/foto"
    android:layout_below="@+id/zadzwon"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:src="@drawable/button_foto"
    android:scaleType="fitStart"
    android:background="@null"
    android:adjustViewBounds="true"
    /> 
</RelativeLayout>

Answer 1

像这样同时使用 RelativeLayout 和 LinearLayout

RelativeLayout

   LinearLayout (orientation:vertical && weightsum = 3)

      ImageView (weightsum = 1)

      ImageView (weightsum = 1)

      ImageView (weightsum = 1)

   LinearLayout

   Button (align to the bot of the above LinearLayout and android:layout_alignParentBottom="true")

RelativeLayout