android手机如何获取手机号

package com.hbj.test;

import android.content.Context;  
import android.telephony.TelephonyManager;  
  
/** 
 * 读取手机设备信息测试代码 
 */  
public class PhoneInfo {  
  
    private TelephonyManager telephonyManager;  
    /** 
     * 国际移动用户识别码 
     */  
    private String IMSI;  
    private Context cxt;  
    public PhoneInfo(Context context) {  
        cxt=context;  
        telephonyManager = (TelephonyManager) context  
                .getSystemService(Context.TELEPHONY_SERVICE);  
    }  
  
    /** 
     * 获取电话号码 
     */  
    public String getNativePhoneNumber() {  
        String NativePhoneNumber=null;  
        NativePhoneNumber=telephonyManager.getLine1Number();  
        return NativePhoneNumber;  
    }  
  
    /** 
     * 获取手机服务商信息 
     */  
    public String getProvidersName() {  
        String ProvidersName = "N/A";  
        try{  
        IMSI = telephonyManager.getSubscriberId();  
        // IMSI号前面3位460是国家，紧接着后面2位00 02是中国移动，01是中国联通，03是中国电信。  
        System.out.println(IMSI);  
        if (IMSI.startsWith("46000") || IMSI.startsWith("46002")) {  
            ProvidersName = "中国移动";  
        } else if (IMSI.startsWith("46001")) {  
            ProvidersName = "中国联通";  
        } else if (IMSI.startsWith("46003")) {  
            ProvidersName = "中国电信";  
        }  
        }catch(Exception e){  
            e.printStackTrace();  
        }  
        return ProvidersName;  
    }  
      
    public String  getPhoneInfo(){  
         TelephonyManager tm = (TelephonyManager)cxt.getSystemService(Context.TELEPHONY_SERVICE);  
            StringBuilder sb = new StringBuilder();  
  
            sb.append("\nDeviceId(IMEI) = " + tm.getDeviceId());  
            sb.append("\nDeviceSoftwareVersion = " + tm.getDeviceSoftwareVersion());  
            sb.append("\nLine1Number = " + tm.getLine1Number());  
            sb.append("\nNetworkCountryIso = " + tm.getNetworkCountryIso());  
            sb.append("\nNetworkOperator = " + tm.getNetworkOperator());  
            sb.append("\nNetworkOperatorName = " + tm.getNetworkOperatorName());  
            sb.append("\nNetworkType = " + tm.getNetworkType());  
            sb.append("\nPhOneType= " + tm.getPhoneType());  
            sb.append("\nSimCountryIso = " + tm.getSimCountryIso());  
            sb.append("\nSimOperator = " + tm.getSimOperator());  
            sb.append("\nSimOperatorName = " + tm.getSimOperatorName());  
            sb.append("\nSimSerialNumber = " + tm.getSimSerialNumber());  
            sb.append("\nSimState = " + tm.getSimState());  
            sb.append("\nSubscriberId(IMSI) = " + tm.getSubscriberId());  
            sb.append("\nVoiceMailNumber = " + tm.getVoiceMailNumber());  
           return  sb.toString();  
    }  
}  

        PhoneInfo siminfo = new PhoneInfo(MytestActivity.this);
        System.out.println("getProvidersName:" + siminfo.getProvidersName());
        System.out.println("getNativePhoneNumber:"
                + siminfo.getNativePhoneNumber());
        System.out.println("------------------------");
        System.out.println("getPhoneInfo:" + siminfo.getPhoneInfo());
        tv.setText("getProvidersName:" + siminfo.getProvidersName()
                + "getNativePhoneNumber:" + siminfo.getNativePhoneNumber()
                + "getPhoneInfo:" + siminfo.getPhoneInfo());