Android 拨号器的简单实现

功能实现：一个EditView 一个拨打按钮，输入号码跳转到拨号界面

界面布局：activity_call.xml

　　//线性垂直布局：一个EditView文本、一个Button按钮
 1 <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:orientation="vertical"
     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=".PhoneActivity" >

     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="请输入电话" />

     <EditText
         android:id="@+id/editText1"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:inputType="phone" />

     <Button
         android:id="@+id/callsumbit"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
         android:text="拨打电话" />

 </LinearLayout>

CallActivity的Create方法

 protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_call);
         Button btn = (Button) findViewById(R.id.callsumbit);
         btn.setOnClickListener(new OnClickListener() {

             @Override
             public void onClick(View v) {
                 EditText etNumber = (EditText) findViewById(R.id.editText1);

                 String number = etNumber.getText().toString();
                 Intent intent = new Intent();
                 intent.setAction(Intent.ACTION_CALL);
                 intent.setData(Uri.parse("tel:" + number));
                 startActivity(intent);
             }
         });
     }

增加拨打电话的权限：AndroidManifest.xml

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

     <uses-sdk
         android:minSdkVersion="8"
         android:targetSdkVersion="18" />
     <uses-permission android:name="android.permission.CALL_PHONE"/>

     <application
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
         <activity
             android:name="com.ccec.callphone.CallActivity"
             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>

 </manifest>

至此可以实现拨号功能。