收到短信后如何開始動作或活動

Question

我是新來的android和堆棧溢出。 我正在嘗試非常簡單的應用程序，我想觸發事件或操作。 即，如果我收到一條短信，希望我“生日快樂”，我需要自動回復“謝謝”。

發送我已經建立的短信部分（我知道那很簡單）。 如何在收到短信后觸發該事件，動作或活動？

Answer 1

授予權限

<uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission> <uses-permission android:name="android.permission.READ_SMS" /> <uses-permission android:name="android.permission.SEND_SMS"></uses-permission>

用戶接收者

<receiver android:name="com.example.broadcastreceiver.IncomingSms"> <intent-filter> <action android:name="android.provider.Telephony.SMS_RECEIVED" /> </intent-filter> </receiver>

和接收器類

public class IncomingSms extends BroadcastReceiver {

    // 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;
                    String message = currentMessage.getDisplayMessageBody();

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


                   // Show Alert
                    int duration = Toast.LENGTH_LONG;
                    Toast toast = Toast.makeText(context, 
                                 "senderNum: "+ senderNum + ", message: " + message, duration);
                    toast.show();

                } // end for loop
              } // bundle is null

        } catch (Exception e) {
            Log.e("SmsReceiver", "Exception smsReceiver" +e);

        }
    }    
}