<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <!-- 设置圆角 -->

    <corners android:radius="5dip"/>

    <!-- 设置渐变色 -->

    <gradient android:startColor="@android:color/white"

        android:endColor="@android:color/holo_blue_bright"/>

    <!-- 设置边框颜色和宽度 -->

    <stroke android:width="1dp"

        android:color="@android:color/black"

        />

</shape>

<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="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" >

    <EditText

        android:layout_width="match_parent"

        android:gravity="center|right"

        android:layout_height="60dp"

        android:id="@+id/et_input"

        android:background="@drawable/writebg"

        android:editable="false"

        />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.thinker.caculatordemo"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="14"

        android:targetSdkVersion="18" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.thinker.caculatordemo.MainActivity"

            android:label="@string/app_name"

            <!-- 设置页面的主题背景 -->

            android:theme="@android:style/Theme.Black.NoTitleBar"

            >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>