[TelephonyManager] 자기 단말의 전화번호 가져오기

<?xml version="1.0" encoding="utf-8"?>   <!-- main.xml --> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     > <TextView    android:id="@+id/mainTextView"     android:layout_width="fill_parent"      android:layout_height="wrap_content"      /> </LinearLayout>

<?xml version="1.0" encoding="utf-8"?> <!-- AndroidManifest.xml -->   <manifest xmlns:android="http://schemas.android.com/apk/res/android"       package="lee.android.GetPhoneNumber"       android:versionCode="1"       android:versionName="1.0">     <application android:icon="@drawable/icon" android:label="@string/app_name">         <activity android:name=".GetPhoneNumberActivity"                   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="8" />  <uses-permission android:name="android.permission.READ_PHONE_STATE"/> </manifest>

// GetPhoneNumberActivity.java   package lee.android.GetPhoneNumber; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.telephony.TelephonyManager; import android.widget.TextView; public class GetPhoneNumberActivity extends Activity {     /** Called when the activity is first created. */     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);                  TextView textview = (TextView)findViewById(R.id.mainTextView);         textview.setText(getMy10DigitPhoneNumber());     }          private String getMyPhoneNumber() {      TelephonyManager mTelephonyMgr;      mTelephonyMgr = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);            return mTelephonyMgr.getLine1Number();     }     private String getMy10DigitPhoneNumber() {      String s = getMyPhoneNumber();      return s.substring(1);      // substrng(1)은 왼쪽 첫번째 자리를 빼고 새로운 string을 만든다는 의미      // String s = 1234567890;      // s.substring(7); 을 하면 s=890이 된다.     } }