<?xml version="1.0" encoding="utf-8"?>
<resources>
  <string name="tip">输入号码</string>
  <string name="bottonname">拨打</string>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical" android:layout_width="fill_parent"
  android:layout_height="fill_parent"> <!-- 线性布局 -->
  <TextView android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/tip" />
  <EditText android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:id="@+id/phonenumber"/>  <!-- 显示一个文本框 id为phonenumber-->
  <Button android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/bottonname"
    android:id="@+id/botton"
    />  <!-- 显示一个按钮 -->
</LinearLayout>

/* AUTO-GENERATED FILE. DO NOT MODIFY.
 *
 * This class was automatically generated by the
 * aapt tool from the resource data it found. It
 * should not be modified by hand.
 */
package org.lxh.phone;
public final class R {
  public static final class attr {
  }
  public static final class drawable {
    public static final int icon=0x7f020000;
  }
  public static final class id {
    public static final int botton=0x7f050001;
    public static final int phonenumber=0x7f050000;
  }
  public static final class layout {
    public static final int main=0x7f030000;
  }
  public static final class string {
    public static final int app_name=0x7f040003;
    public static final int bottonname=0x7f040001;
    public static final int hello=0x7f040002;
    public static final int tip=0x7f040000;
  }
}

package org.lxh.phone;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class PhoneActivity extends Activity {
   private EditText edit;
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    edit=(EditText)this.findViewById(R.id.phonenumber);  //通过id取得文本输入框
    Button but=(Button)this.findViewById(R.id.botton);  //通过id取得按钮
    but.setOnClickListener(new MyListener()); //给按钮添加监听器
  }
  public final class MyListener implements View.OnClickListener{  //自定义的监听器
    public void onClick(View v) {
      //实例化一个意图（动作），用来拨打电话
      Intent intent=new Intent("android.intent.action.CALL",Uri.parse("tel:"+edit.getText().toString()));
      startActivity(intent); //封装一个意图
    }
  }
}

package org.lxh.activity;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class CallPhoneActivity extends Activity {
  private EditText edittext;
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    //取得输入框和按钮
    edittext=(EditText)this.findViewById(R.id.phonenum);
    Button but=(Button)this.findViewById(R.id.button);
    but.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        String number=edittext.getText().toString();
        //封装一个意图，用来拨打电话
        Intent intent=new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+number));
        startActivity(intent);
      }
    });
  }
}

<activity android:name="OutgoingCallBroadcaster"
    android:permission="android.permission.CALL_PHONE"
    android:theme="@android:style/Theme.NoDisplay"
    android:configChanges="orientation|keyboardHidden">
  <!-- CALL action intent filters, for the various ways
    of initiating an outgoing call. -->
  <intent-filter>
    <action android:name="android.intent.action.CALL" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:scheme="tel" />
  </intent-filter>
  <intent-filter>
    <action android:name="android.intent.action.CALL" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:scheme="voicemail" />
  </intent-filter>
  <intent-filter>
    <action android:name="android.intent.action.CALL" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:mimeType="vnd.android.cursor.item/phone" />
    <data android:mimeType="vnd.android.cursor.item/phone_v2" />
    <data android:mimeType="vnd.android.cursor.item/person" />
  </intent-filter>
</activity>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="org.lxh.phone"
   android:versionCode="1"
   android:versionName="1.0">
  <application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".PhoneActivity"
         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-sdk android:minSdkVersion="7" />
  <uses-permission android:name="android.permission.CALL_PHONE"/>
</manifest>

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <string name="hello">Hello World, PhoneActivity!</string>
  <string name="app_name">我的手机拨号器</string>
</resources>