实例教程一：电话拨号器

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/mobile" />

<EditText
android:id="@+id/edtPhoneNumber"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/call"
android:id="@+id/btnCall" />

</LinearLayout>

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

<string name="hello">Hello World, PhoneCallActivity!</string>
<string name="app_name">电话拨号器</string>
<string name="mobile">请输入手机号码</string>
<string name="call">拨打此号码</string>

</resources>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.phone.call"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />

<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".PhoneCallActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

<uses-permission android:name="android.permission.CALL_PHONE"/>

</manifest>