android - 为什么有时 SMS BroadcastReceiver 会被调用两次？

Question

我为 android.provider.Telephony.SMS_RECEIVED 注册了一个 BroadcastReceiver。

有时 BroadcastReceiver onReceive 会在同一条短信上被调用两次。

这是为什么？

我做错了什么？

private void initSmsReceivers() {
smsReceiver = new SmsReceiver();
getActivity().registerReceiver(smsReceiver,
            new IntentFilter("android.provider.Telephony.SMS_RECEIVED"));
}



public class SmsReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // ---get the SMS message passed in---
        Bundle bundle = intent.getExtras();
        SmsMessage[] msgs = null;
        String str = "";
        if (bundle != null) {
            // ---retrieve the SMS message received---
            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 += " :";
                str += msgs[i].getMessageBody().toString();

            }
            // ---display the new SMS message---
            String output = CryptoUtils.decrypt(str);
            Toast.makeText(context, output, Toast.LENGTH_LONG).show();

            try {
                parsemessage(output);
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                Log.e("JSON2", e.toString());
            }

        }
    }
}

Answer 1

可能是您正在编程和静态注册广播接收器。因此，请确保 initSmsReceivers 仅被调用一次，并且在您的 list 中您没有重新注册该接收器!

以下是在 list 中静态注册短信接收者的方法:

<receiver
            android:name="your.package.SmsReceiver"
            android:exported="true"
            android:permission="android.permission.BROADCAST_SMS" >
            <intent-filter android:priority="999" >
                <action android:name="android.provider.Telephony.SMS_RECEIVED" />
            </intent-filter>
</receiver>