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我的应用程序中有一个活动，它会在接收特定关键字作为消息时播放蜂鸣器，但我的代码根本不起作用。根据 Logcat，它接收到消息。

public class SmsReceiver extends BroadcastReceiver {
    int k = 0;
    public static final String SMS_EXTRA_NAME = "pdus";
    MediaPlayer mPlay = new MediaPlayer();

    public void onReceive(Context context, Intent intent) {
        // Get the SMS map from Intent
        Bundle extras = intent.getExtras();
        String body = "";
        SharedPreferences myPrefs = context.getSharedPreferences("test", Context.MODE_PRIVATE);
        String password = myPrefs.getString("password", "a");
        String find = "find " + password;
        mPlay.create(context, R.raw.music);
        AudioManager am = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        am.setStreamVolume(AudioManager.STREAM_MUSIC, am.getStreamMaxVolume(AudioManager.STREAM_MUSIC), 0);
        mPlay.setAudioStreamType(AudioManager.STREAM_MUSIC);

        if (extras != null) {
            // Get received SMS array
            Object[] smsExtra = (Object[]) extras.get(SMS_EXTRA_NAME);

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

                body = sms.getMessageBody().toString();
                if (body.equalsIgnoreCase(find)) {
                    this.abortBroadcast();
                    int dur = mPlay.getDuration();
                    for (int j = 0;; j += dur) {
                        if (k == 1)
                            break;
                        mPlay.start();
                        try {
                            Thread.sleep(dur);
                        } catch (InterruptedException e) {
                        }
                    }
                }

            }
        }
    }

    @Override
    public void onKeyDown() {
        k = 1;
    }

    public void onDestroy() {
        mPlay.stop();
        mPlay.release();
    }
}
4

2 回答 2

1

你设置了吗

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

?

然后这是我所做的

public class SmsReceiver extends BroadcastReceiver {

    private Context cont;

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

        if (extras != null) {
            Object[] smsExtra = (Object[]) extras.get("pdus");
            SmsMessage sms = SmsMessage.createFromPdu((byte[])smsExtra[0]);
            String phoneNumber = sms.getOriginatingAddress();
            String body = sms.getMessageBody().toString();
            if (body.equalsIgnoreCase("something")) {
                // do your stuff
            }
        }
    }
}

如果这不能回答您的问题，请告诉我们什么不起作用。

于 2013-08-17T00:35:39.677 回答
1

另一个改进是为您的循环执行此操作：

mp = MediaPlayer.create(context, R.raw.music);
mp.setOnCompletionListener(new OnCompletionListener() {
   @Override
   public void onCompletion(MediaPlayer mp) {
      mp.start();
   }
});   
mp.start();
于 2013-08-17T02:40:30.517 回答