Android UI

 Android UI

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新建一个Android项目

将程序界面对应布局文件：activity_mian.xml

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<?xml version="1.0" encoding="utf-8"?><LinearLayout 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:background="@android:color/darker_gray" android:orientation="vertical" tools:context=".MainActivity" > <RelativeLayout style="@style/h_wrap_content" android:layout_marginTop="10dp"> <TextView style="@style/tv_style" android:layout_alignParentLeft="true" android:layout_marginLeft="10dp" android:drawableTop="@drawable/clound" android:text="@string/_cloud" /> <TextView style="@style/tv_style" android:layout_alignParentRight="true" android:layout_marginRight="10dp" android:drawableTop="@drawable/bluetooth" android:text="@string/_bluetooth" /> </RelativeLayout> <RelativeLayout style="@style/h_wrap_content" android:layout_marginTop="10dp"> <TextView style="@style/tv_style" android:layout_alignParentLeft="true" android:layout_marginLeft="10dp" android:drawableTop="@drawable/gesture" android:text="@string/_gesture" /> <TextView style="@style/tv_style" android:layout_alignParentRight="true" android:layout_marginRight="10dp" android:drawableTop="@drawable/gps" android:text="@string/_gps" /> </RelativeLayout> <RelativeLayout style="@style/h_wrap_content" android:layout_marginTop="10dp"> <TextView style="@style/tv_style" android:layout_alignParentLeft="true" android:layout_marginLeft="10dp" android:drawableTop="@drawable/info" android:text="@string/_system_info" /> <TextView style="@style/tv_style" android:layout_alignParentRight="true" android:layout_marginRight="10dp" android:drawableTop="@drawable/internet" android:text="@string/_internet" /> </RelativeLayout> <RelativeLayout style="@style/h_wrap_content" android:layout_marginTop="10dp"> <TextView style="@style/tv_style" android:layout_alignParentLeft="true" android:layout_marginLeft="10dp" android:drawableTop="@drawable/language" android:text="@string/_language" /> <TextView style="@style/tv_style" android:layout_alignParentRight="true" android:layout_marginRight="10dp" android:drawableTop="@drawable/notifycation" android:text="@string/_set_notifycation" /> </RelativeLayout>

</LinearLayout>

编写布局文件时，相同控件之间的外边距和宽高都是固定的。会产生大量重复代码，为防止代码冗余将相同代码抽取为样式，放在values下的styles.xml文件中。▼

<style name="h_wrap_content">
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">wrap_content</item>
</style>
<!-- 宽高都 match——parent -->
<style name="tv_style">
<item name="android:layout_width">145dp</item>
<item name="android:layout_height">100dp</item>
<item name="android:gravity">center</item>
<item name="android:paddingTop">8dp</item>
<item name="android:paddingBottom">8dp</item>
<item name="android:drawablePadding">5dp</item>
<item name="android:background">@android:color/white</item>
</style>
</resources>

在project-app-src下新建文件夹分别命名为：values-zh-rCN,values-en-rUS在相应的文件夹下建立string.xml

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

<resources><string name="app_name">手机信息页面</string><string name="menu_settings">设置</string><string name="hello_world">你好，世界!</string><string name="_cloud">云通信</string><string name="_bluetooth">蓝牙</string><string name="_gesture">自定义手势</string><string name="_gps">定位</string><string name="_system_info">系统信息</string><string name="_internet">网络</string><string name="_language">语言设置</string><string name="_set_notifycation">通知栏设置</string></resources>

values-en-rUS文件夹下的string.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">phoneInfo</string>
<string name="menu_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string name="_cloud">Cloud</string>
<string name="_bluetooth">Bluetooth</string>
<string name="_gesture">Gesture</string>
<string name="_gps">Gps</string>
<string name="_system_info">SystemInfo</string>
<string name="_internet">Internet</string>
<string name="_language">Language</string>
<string name="_set_notifycation">Notifycation</string>
</resources>

MainActivity.Java中与界面交互的逻辑

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public class MainActivity extends Activity {

@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}}

导包结束编程运行虚拟机

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