安卓第四周作业
<?xml version=
"1.0"
encoding=
"utf-8"
?>
<RelativeLayout 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"
>
<Button
android:id=
"@+id/a1"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_centerInParent=
"true"
android:background=
"#FF7F24"
/>
<Button
android:id=
"@+id/a2"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_above=
"@id/a1"
android:layout_alignRight=
"@+id/a1"
android:background=
"#BF3EFF"
/>
<Button
android:id=
"@+id/a3"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_below=
"@id/a1"
android:layout_alignRight=
"@+id/a1"
android:background=
"#B8860B"
/>
<Button
android:id=
"@+id/a4"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_above=
"@id/a1"
android:layout_toLeftOf=
"@+id/a1"
android:background=
"#969696"
/>
<Button
android:id=
"@+id/a5"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_above=
"@id/a1"
android:layout_toRightOf=
"@+id/a1"
android:background=
"#7CFC00"
/>
<Button
android:id=
"@+id/a6"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_below=
"@id/a1"
android:layout_toLeftOf=
"@+id/a1"
android:background=
"#303030"
/>
<Button
android:id=
"@+id/a7"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_below=
"@id/a1"
android:layout_toRightOf=
"@+id/a1"
android:background=
"#0000FF"
/>
<Button
android:id=
"@+id/a8"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_toLeftOf=
"@id/a1"
android:layout_alignBottom=
"@+id/a1"
android:background=
"#A0522D"
/>
<Button
android:id=
"@+id/a9"
android:layout_width=
"100dp"
android:layout_height=
"100dp"
android:layout_toRightOf=
"@id/a1"
android:layout_alignBottom=
"@+id/a1"
android:background=
"#CD00CD"
/>
</RelativeLayout>