SoFunction
Updated on 2025-04-10

Learn Android small sample program from scratch


<RelativeLayout xmlns:andro
    xmlns:tools="/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/GreenBtn"
        android:layout_alignParentTop="true"
        android:layout_alignRight="@+id/BlueBtn"
        android:layout_marginTop="17dp"
        android:text="@string/ShowWordText"
        android:textStyle="bold" />

    <Button
        android:
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/showWord"
        android:layout_marginLeft="22dp"
        android:layout_marginTop="28dp"
        android:gravity="left|center_vertical|center_horizontal"
        android:text="@string/GreenBtnText" />

    <Button
        android:
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/YellowBtn"
        android:layout_alignBottom="@+id/YellowBtn"
        android:layout_toRightOf="@+id/YellowBtn"
        android:gravity="left|center_vertical|center_horizontal"
        android:text="@string/BlueBtnText" />

    <Button
        android:
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/GreenBtn"
        android:layout_alignBottom="@+id/GreenBtn"
        android:layout_toRightOf="@+id/GreenBtn"
        android:gravity="left|center_vertical|center_horizontal"
        android:text="@string/YellowBtnText" />

</RelativeLayout>