搞了一個想獲取Android手機的本機號碼的功能，但是發現雙卡雙待的手機是無法獲取到兩個號碼 的。在Android的官方文件是沒有提供相應的Api的，因為標準的Andoird是沒有雙卡的，好像也只有國內才會搞雙卡雙待的神器吧。以下記錄一下做這個功能所學習到的東西。直接上程式碼：

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.telephony.CellInfo;
import android.telephony.TelephonyManager;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity
{

	private TextView	tv;
	private TextView	tv2;
	// ///////////////////////////////////
	static String		ISDOUBLE;
	static String		SIMCARD;
	static String		SIMCARD_1;
	static String		SIMCARD_2;
	static boolean		isDouble;

	// //////////////////////////////////

	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		tv = (TextView) findViewById(R.id.text);
		tv2 = (TextView) findViewById(R.id.text2);

		tv2.setText("不知道哪個卡可用！");

		getNumber();

	}

	private void getNumber()
	{
		TelephonyManager tm = (TelephonyManager) this.getSystemService(this.TELEPHONY_SERVICE);
		String phoneNumber1 = tm.getLine1Number();

		// String phoneNumber2 = tm.getGroupIdLevel1();

		initIsDoubleTelephone(this);
		if (isDouble)
		{
			// tv.setText("這是雙卡手機！");
			tv.setText("本機號碼是：" + "   " + phoneNumber1 + "   " + "這是雙卡手機！");
		} else
		{
			// tv.setText("這是單卡手機");
			tv.setText("本機號碼是：" + "   " + phoneNumber1 + "   " + "這是單卡手機");
		}

	}

	public void initIsDoubleTelephone(Context context)
	{
		isDouble = true;
		Method method = null;
		Object result_0 = null;
		Object result_1 = null;
		TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
		try
		{
			// 只要在反射getSimStateGemini 這個函式時報了錯就是單卡手機（這是我自己的經驗，不一定全正確）
			method = TelephonyManager.class.getMethod("getSimStateGemini", new Class[]
			{ int.class });
			// 獲取SIM卡1
			result_0 = method.invoke(tm, new Object[]
			{ new Integer(0) });
			// 獲取SIM卡2
			result_1 = method.invoke(tm, new Object[]
			{ new Integer(1) });
		} catch (SecurityException e)
		{
			isDouble = false;
			e.printStackTrace();
			// System.out.println("1_ISSINGLETELEPHONE:"+e.toString());
		} catch (NoSuchMethodException e)
		{
			isDouble = false;
			e.printStackTrace();
			// System.out.println("2_ISSINGLETELEPHONE:"+e.toString());
		} catch (IllegalArgumentException e)
		{
			isDouble = false;
			e.printStackTrace();
		} catch (IllegalAccessException e)
		{
			isDouble = false;
			e.printStackTrace();
		} catch (InvocationTargetException e)
		{
			isDouble = false;
			e.printStackTrace();
		} catch (Exception e)
		{
			isDouble = false;
			e.printStackTrace();
			// System.out.println("3_ISSINGLETELEPHONE:"+e.toString());
		}
		SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
		Editor editor = sp.edit();
		if (isDouble)
		{
			// 儲存為雙卡手機
			editor.putBoolean(ISDOUBLE, true);
			// 儲存雙卡是否可用
			// 如下判斷哪個卡可用.雙卡都可以用
			if (result_0.toString().equals("5") && result_1.toString().equals("5"))
			{
				if (!sp.getString(SIMCARD, "2").equals("0") && !sp.getString(SIMCARD, "2").equals("1"))
				{
					editor.putString(SIMCARD, "0");
				}
				editor.putBoolean(SIMCARD_1, true);
				editor.putBoolean(SIMCARD_2, true);

				tv2.setText("雙卡可用");

			} else if (!result_0.toString().equals("5") && result_1.toString().equals("5"))
			{// 卡二可用
				if (!sp.getString(SIMCARD, "2").equals("0") && !sp.getString(SIMCARD, "2").equals("1"))
				{
					editor.putString(SIMCARD, "1");
				}
				editor.putBoolean(SIMCARD_1, false);
				editor.putBoolean(SIMCARD_2, true);

				tv2.setText("卡二可用");

			} else if (result_0.toString().equals("5") && !result_1.toString().equals("5"))
			{// 卡一可用
				if (!sp.getString(SIMCARD, "2").equals("0") && !sp.getString(SIMCARD, "2").equals("1"))
				{
					editor.putString(SIMCARD, "0");
				}
				editor.putBoolean(SIMCARD_1, true);
				editor.putBoolean(SIMCARD_2, false);

				tv2.setText("卡一可用");

			} else
			{// 兩個卡都不可用(飛航模式會出現這種種情況)
				editor.putBoolean(SIMCARD_1, false);
				editor.putBoolean(SIMCARD_2, false);

				tv2.setText("飛航模式");
			}
		} else
		{
			// 儲存為單卡手機
			editor.putString(SIMCARD, "0");
			editor.putBoolean(ISDOUBLE, false);
		}
		editor.commit();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu)
	{
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}