java - 如何从另一个类调用字符串

我正在制作一个android应用程序。在IncomingSMS.java中，有一个名为senderNum的字符串。当接收到一条消息并且senderNum字符串是该消息的发送者时，将生成senderNum。我想将senderNum称为另一个类。据说我需要返回字符串的值。但我不知道如何。下面显示的是部分代码。

码：

IncomingSMS.java

public class IncomingSms extends BroadcastReceiver {
private static final byte TARGET_PIN_2 = 0x2;
private String message = "";
private static boolean ledstate = false;

// Get the object of SmsManager
final SmsManager sms = SmsManager.getDefault();

public void onReceive(Context context, Intent intent) {

    // Retrieves a map of extended data from the intent.
    final Bundle bundle = intent.getExtras();

    try {

        if (bundle != null) {

            final Object[] pdusObj = (Object[]) bundle.get("pdus");

            for (int i = 0; i < pdusObj.length; i++) {

                SmsMessage currentMessage = SmsMessage
                        .createFromPdu((byte[]) pdusObj[i]);
                String phoneNumber = currentMessage
                        .getDisplayOriginatingAddress();

                String senderNum = phoneNumber;
                message = currentMessage.getDisplayMessageBody();

                Log.i("SmsReceiver", "senderNum: " + senderNum
                        + "; message: " + message);

                int duration = Toast.LENGTH_LONG;
                Toast toast = Toast.makeText(context, "senderNum: "+ senderNum + ", message: " + message, duration);
                toast.show();
             // call led here
                toggleLed();

            }

            // end for loop
        } // bundle is null
    } catch (Exception e) {
        Log.e("SmsReceiver", "Exception smsReceiver" + e);

    }
}[/CODE]

下面是我要调用senderNum字符串的类：

MainActivity.java

public void sendLOCKED()
        {
            SmsManager smsManager = SmsManager.getDefault();
                        // i want to call the senderNum below
            smsManager.sendTextMessage("senderNum", null, "LOCKED", null, null);
        }
    public void sendUNLOCKED()
        {
            SmsManager smsManager = SmsManager.getDefault();
                         // i want to call the senderNum below
            smsManager.sendTextMessage("senderNum", null, "UNLOCKED", null, null);
        }

最佳答案

我对所要询问的内容有些困惑，但我会尽力回答。

我将声明字段private String senderNum和方法public String getSenderNum(){return senderNum;}，并删除String的声明：

String senderNum = phoneNumber;
message = currentMessage.getDisplayMessageBody();

然后在MainActivity.java中调用需要的getSenderNum()。