TelephonyManager

<?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"
    >
    <TextView android:id="@+id/phone_type"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
    <TextView android:id="@+id/network_name"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
    <TextView android:id="@+id/sim_state"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
    <TextView android:id="@+id/network_type"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

import android.app.Activity;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.ServiceState;
import android.telephony.TelephonyManager;
import android.widget.TextView;

public class NetworkDetector extends Activity {
	
	//SIM卡状态常量
	private static final String SIM_ABSENT = "Absent"; //手机内无SIM卡
	private static final String SIM_READY = "Ready"; //SIM卡已准备好
	private static final String SIM_PIN_REQUIRED = "PIN required"; //需要SIM卡的PIN解锁
	private static final String SIM_PUK_REQUIRED = "PUK required"; //需要SIM卡的PUK解锁 
	private static final String SIM_NETWORK_LOCKED = "Network locked"; //需要Network PIN解锁
	private static final String SIM_UNKNOWN = "Unknown"; //状态未知
    
    //网络类型常量
	private static final String NETWORK_CDMA = "CDMA: Either IS95A or IS95B (2G)";
	private static final String NETWORK_EDGE = "EDGE (2.75G)";
	private static final String NETWORK_GPRS = "GPRS (2.5G)";
	private static final String NETWORK_UMTS = "UMTS (3G)";
    private static final String NETWORK_EVDO_0 = "EVDO revision 0 (3G)";
    private static final String NETWORK_EVDO_A = "EVDO revision A (3G - Transitional)";
    private static final String NETWORK_EVDO_B = "EVDO revision B (3G - Transitional)";
    private static final String NETWORK_1X_RTT = "1xRTT  (2G - Transitional)";
    private static final String NETWORK_HSDPA = "HSDPA (3G - Transitional)";
    private static final String NETWORK_HSUPA = "HSUPA (3G - Transitional)";
    private static final String NETWORK_HSPA = "HSPA (3G - Transitional)";
    private static final String NETWORK_IDEN = "iDen (2G)";
    private static final String NETWORK_UNKOWN = "Unknown";
    
    //手机制式类型常量
    private static final String PHONE_CDMA = "CDMA";
    private static final String PHONE_GSM = "GSM";
    private static final String PHONE_NONE = "No radio";
    	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.network_detector);
        
        //获取telephony系统服务，用于取得SIM卡和网络相关信息
        final TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        
        //更新界面上相关网络信息
        updateViews(tm);
        
        //由于SIM卡状态和网络信息随时都可能发生变化，因此需要注册PhoneStateListener
        //来实时更新界面显示的信息。这里监听两个事件：LISTEN_SERVICE_STATE和LISTEN_DATA_CONNECTION_STATE
        //它们分别对应回调函数onServiceStateChanged和onDataConnectionStateChanged
        tm.listen(new PhoneStateListener() {

			@Override
			public void onDataConnectionStateChanged(int state, int networkType) {
				//数据连接状态改变可能导致网络类型的改变
				updateViews(tm);
			}

			@Override
			public void onServiceStateChanged(ServiceState serviceState) {
				updateViews(tm);
			}
        	
        }, PhoneStateListener.LISTEN_SERVICE_STATE 
        		| PhoneStateListener.LISTEN_DATA_CONNECTION_STATE);
    }
    
	@Override
	protected void onResume() {
		super.onResume();
		final TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
		updateViews(tm);
	}
    
    /**
     * 更新SIM卡状态和网络信息
     * @param tm
     */
    private final void updateViews(TelephonyManager tm) {
    	TextView view = null;
    	
    	view = (TextView) findViewById(R.id.sim_state);
    	view.setText("SIM State : " + mapSimStateToName(tm.getSimState()));
    	
    	view = (TextView) findViewById(R.id.network_type);
    	view.setText("Network Type : " + mapNetworkTypeToName(tm.getNetworkType()));
    	
    	view = (TextView) findViewById(R.id.network_name);
    	view.setText("Network Operator : " + tm.getNetworkOperatorName());
    	
    	view = (TextView) findViewById(R.id.phone_type);
    	view.setText("Phone Type : " + mapDeviceTypeToName(tm.getPhoneType()));
    	
    }

    /**
     * 将手机制式值以字符串形式返回
     * @param phoneType
     * @return
     */
	private String mapDeviceTypeToName(int phoneType) {
        switch (phoneType) {
        case TelephonyManager.PHONE_TYPE_CDMA:
            return PHONE_CDMA;
        case TelephonyManager.PHONE_TYPE_GSM:
            return PHONE_GSM;
        case TelephonyManager.PHONE_TYPE_NONE:
            return PHONE_NONE;
        default:
        	//不应该走到这个分支
            return null;
        }
	}

	/**
	 * 将网络类型值以字符串形式返回
	 * @param networkType
	 * @return
	 */
	private String mapNetworkTypeToName(int networkType) {
        switch (networkType) {
        case TelephonyManager.NETWORK_TYPE_CDMA:
            return NETWORK_CDMA;
        case TelephonyManager.NETWORK_TYPE_EDGE:
            return NETWORK_EDGE;
        case TelephonyManager.NETWORK_TYPE_GPRS:
            return NETWORK_GPRS;
        case TelephonyManager.NETWORK_TYPE_UMTS:
            return NETWORK_UMTS;
        case TelephonyManager.NETWORK_TYPE_EVDO_0:
            return NETWORK_EVDO_0;
        case TelephonyManager.NETWORK_TYPE_EVDO_A:
            return NETWORK_EVDO_A;
        case TelephonyManager.NETWORK_TYPE_EVDO_B:
            return NETWORK_EVDO_B;
        case TelephonyManager.NETWORK_TYPE_1xRTT:
            return NETWORK_1X_RTT;
        case TelephonyManager.NETWORK_TYPE_HSDPA:
            return NETWORK_HSDPA;
        case TelephonyManager.NETWORK_TYPE_HSPA:
            return NETWORK_HSPA;
        case TelephonyManager.NETWORK_TYPE_HSUPA:
            return NETWORK_HSUPA;
        case TelephonyManager.NETWORK_TYPE_IDEN:
            return NETWORK_IDEN;
        case TelephonyManager.NETWORK_TYPE_UNKNOWN:
        default:
            return NETWORK_UNKOWN;
        }
	}

	/**
	 * 将SIM卡状态值以字符串形式返回
	 * @param simState
	 * @return
	 */
	private static String mapSimStateToName(int simState) {
        switch (simState) {
        case TelephonyManager.SIM_STATE_ABSENT:
            return SIM_ABSENT;
        case TelephonyManager.SIM_STATE_READY:
            return SIM_READY;
        case TelephonyManager.SIM_STATE_PIN_REQUIRED:
            return SIM_PIN_REQUIRED;
        case TelephonyManager.SIM_STATE_PUK_REQUIRED:
            return SIM_PUK_REQUIRED;
        case TelephonyManager.SIM_STATE_NETWORK_LOCKED:
            return SIM_NETWORK_LOCKED;
        case TelephonyManager.SIM_STATE_UNKNOWN:
            return SIM_UNKNOWN;
        default:
            //不应该走到这个分支
            return null;
        }
	}
	
}