android：即使应用已关闭，也会收到短信 [英] android: receive sms even if app is closed

问题描述

我正在编写一个应用程序，即使关闭该应用程序也能正常工作。这是我编写的用于接受传入SMS的代码。

I am writing an app, which should work even after the app is closed. Here is the code which I wrote to accept the incoming SMS.

public class SMSReceiver extends BroadcastReceiver {

    private ResultReceiver receiver;
    private Context context;

    @Override
    public void onReceive(Context context, Intent intent) {
        this.context = context;

        // Parse the SMS.
        Bundle bundle = intent.getExtras();
        SmsMessage[] msgs = null;
        String str = "";
        if (bundle != null)
        {
            // Retrieve the SMS.
            Object[] pdus = (Object[]) bundle.get("pdus");
            msgs = new SmsMessage[pdus.length];
            for (int i=0; i<msgs.length; i++)
            {
                msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);

                str += "SMS from " + msgs[i].getOriginatingAddress();
                str += " :\n";
                str += " :\n";
                str += "MessageBody: ";
                str += msgs[i].getMessageBody();

            }
            Log.i("SmsReceiver message := " + str);
        }
    }
}

我已经注册了此广播，在我的主要活动中。并且我没有注销广播。

I had registered this Broadcast, in the my main activity. and I am not unregistering broadcast.

此功能在启动我的应用程序时有效，但在应用程序关闭时不起作用。

This works when my App is launched, but doesn't work when app is closed.

即使关闭应用程序，如何接收短信？感谢您的帮助。

How can I receive SMS even after the app is closed? Any help is appreciated.

谢谢

推荐答案

您可以接收器作为服务运行。这是我使用的代码：

You can have the receiver run as a Service. Here is the code I use:

public class Communicator extends Service
{

private final String TAG = this.getClass().getSimpleName();

private SMSReceiver mSMSreceiver;
private IntentFilter mIntentFilter;

@Override
public void onCreate()
{
    super.onCreate();


    Log.i(TAG, "Communicator started");
    //SMS event receiver
    mSMSreceiver = new SMSReceiver();
    mIntentFilter = new IntentFilter();
    mIntentFilter.addAction("android.provider.Telephony.SMS_RECEIVED");
    mIntentFilter.setPriority(2147483647);
    registerReceiver(mSMSreceiver, mIntentFilter);

    Intent intent = new Intent("android.provider.Telephony.SMS_RECEIVED");
    List<ResolveInfo> infos = getPackageManager().queryBroadcastReceivers(intent, 0);
    for (ResolveInfo info : infos) {
        Log.i(TAG, "Receiver name:" + info.activityInfo.name + "; priority=" + info.priority);
    }
}

@Override
public void onDestroy()
{
    super.onDestroy();

    // Unregister the SMS receiver
    unregisterReceiver(mSMSreceiver);
}

@Override
public IBinder onBind(Intent arg0) {
    return null;
}

private class SMSReceiver extends BroadcastReceiver
{
    private final String TAG = this.getClass().getSimpleName();

    @Override
    public void onReceive(Context context, Intent intent)
    {
        Bundle extras = intent.getExtras();


        String strMessage = "";

        if ( extras != null )
        {
            Object[] smsextras = (Object[]) extras.get( "pdus" );

            for ( int i = 0; i < smsextras.length; i++ )
            {
                SmsMessage smsmsg = SmsMessage.createFromPdu((byte[])smsextras[i]);

                String strMsgBody = smsmsg.getMessageBody().toString();
                String strMsgSrc = smsmsg.getOriginatingAddress();

                strMessage += "SMS from " + strMsgSrc + " : " + strMsgBody;                    


                if (strMsgBody.contains(Constants.DELIMITER)) {

                    Intent msgIntent = new Intent(Constants.INTENT_INCOMMING_SMS);
                    msgIntent.putExtra(Constants.EXTRA_MESSAGE, strMsgBody);
                    msgIntent.putExtra(Constants.EXTRA_SENDER, strMsgSrc);
                    sendBroadcast(msgIntent);

                    this.abortBroadcast();
                }
            }



        }

    }

}
}

记住将其添加到清单中：

Remember to add it to the manifest:

<service android:name="yourpakage.Communicator" />

现在，您可以通过启动服务来开始收听传入的SMS消息：

Now you can start listening for incomming SMS messages by starting the service:

startService(new Intent(this, Communicator.class));

我在我的Activity的onDestroy中停止了该服务，但我想您可以使其继续运行甚至注册

I stop the service in onDestroy of my Activity but I suppose you can keep it running and even register it to be started when the device is booted as with any other service.

以下是停止服务的代码：

Here is the code to stop the service:

stopService(new Intent(this, Communicator.class));

如果您也想在某个时间发送短信，我会就此问题做出相当广泛的回答此处：发送SMS直到成功

In case you also want to send SMS at some point I have made a rather extensive answer on the subject here: Send SMS until it is successful

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