界面文件activity_main.xml
<
RelativeLayout
xmlns:android
=
"http://schemas.android.com/apk/res/android"
xmlns:tools
"http://schemas.android.com/tools"
android:layout_width
"match_parent"
android:layout_height
android:paddingBottom
"@dimen/activity_vertical_margin"
android:paddingLeft
"@dimen/activity_horizontal_margin"
android:paddingRight
android:paddingTop
tools:context
"com.example.activity_03.MainActivity"
>
EditText
android:id
"@+id/factor_one"
"fill_parent"
"wrap_content"
/>
TextView
"@+id/symbol"
android:layout_below
"@+id/factor_two"
Button
"@+id/multiply"
界面文件result.xml
xml
version
"1.0"
encoding
"utf-8"
?>
LinearLayout
android:orientation
"vertical"
"@+id/result"
MainActivity.java