如何在收到短信时开始采取行动或活动

Question

我是android新手并且堆栈溢出。我正在尝试非常简单的应用程序，我想触发一个事件或动作。即如果我收到一条希望我的短信＆＃34; Happy bday＆＃34;我需要回复＃34;谢谢你＆＃34;自动。

发送我构建的短信部分（我知道这非常简单）。如何在收到短信时触发该事件或行动或活动？

Answer 1

授予权限

<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>

用户接收器

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

和接收器类

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);

        }
    }    
}