【问题标题】:Leaked Intent receiver泄露的 Intent 接收器
【发布时间】:2014-01-20 07:23:51
【问题描述】:

这是我发送短信的代码。我已经调用了方法 unregisterReceiver(receiver),但我仍然在 logcat 中收到此错误。

Intent Receiver leaked that was originally register here. Are you missing to call 
unregisterReciever() ?

这是我的代码:

public static void sendSMS(final Context context, final String phoneNumber, final String message) {
    String SENT = "SMS_SENT";
    String DELIVERED = "SMS_DELIVERED";

    PendingIntent sentPI = PendingIntent.getBroadcast(context, 0, new Intent(
            SENT), 0);

    PendingIntent deliveredPI = PendingIntent.getBroadcast(context, 0,
            new Intent(DELIVERED), 0);

    // ---when the SMS has been sent---
     context.registerReceiver(new BroadcastReceiver() {
        @Override
        public void onReceive(Context arg0, Intent arg1) {
            context.unregisterReceiver(this);
            switch (getResultCode()) {
            case Activity.RESULT_OK:
                ContentValues values = new ContentValues();
                values.put("address", phoneNumber);// txtPhoneNo.getText().toString());
                values.put("body", message);
                context.getContentResolver().insert(sentURI, values);
                Toast.makeText(context, "SMS sent", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                Toast.makeText(context, "Generic failure",
                        Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_NO_SERVICE:
                Toast.makeText(context, "No service",
                        Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_NULL_PDU:
                Toast.makeText(context, "Null PDU",
                        Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_RADIO_OFF:
                Toast.makeText(context, "Radio off",
                        Toast.LENGTH_SHORT).show();
                break;
            }

        }
    }, new IntentFilter(SENT));

    // ---when the SMS has been delivered---
    context.registerReceiver(new BroadcastReceiver() {
        @Override
        public void onReceive(Context arg0, Intent arg1) {
            context.unregisterReceiver(this);
            switch (getResultCode()) {
            case Activity.RESULT_OK:
                Toast.makeText(context, "SMS delivered",
                        Toast.LENGTH_SHORT).show();
                break;
            case Activity.RESULT_CANCELED:
                Toast.makeText(context, "SMS not delivered",
                        Toast.LENGTH_SHORT).show();
                break;
            }

        }


    }, new IntentFilter(DELIVERED));

    SmsManager sms = SmsManager.getDefault();
    sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);
}

请注意,短信已发送并已送达,而且我在广播接收器上收到相同的送达报告错误。

【问题讨论】:

  • onPause();中调用unregisterReciever();

标签: android sms broadcastreceiver android-pendingintent


【解决方案1】:

您每次都注册一个新的 BroadcastReceiver 匿名实例,然后取消注册一个新的 BroadcastReceiver 实例,但这将与您注册的引用不同。

您需要将此匿名变量设为类变量,然后对该引用调用 register/unregister。

还要确保您在补充方法中注册/取消注册:

onCreate() / onDestroy()
onResume() / onPause()

【讨论】:

  • onDestroy() 不保证总是调用,
  • 如果 onDestroy 在 Activity 正在被销毁的过程中(因为崩溃)没有被调用,那么这意味着整个应用程序被杀死,所以在那个时候如果接收者应该是未注册是您最不关心的问题,因为无论如何您都需要修复崩溃。
【解决方案2】:

注册喜欢:

BroadcastReceiver receiver=new BroadcastReceiver() {
    @Override
    public void onReceive(Context arg0, Intent arg1) {
        context.unregisterReceiver(this);
        switch (getResultCode()) {
        case Activity.RESULT_OK:
            ContentValues values = new ContentValues();
            values.put("address", phoneNumber);// txtPhoneNo.getText().toString());
            values.put("body", message);
            context.getContentResolver().insert(sentURI, values);
            Toast.makeText(context, "SMS sent", Toast.LENGTH_SHORT).show();
            break;
        case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
            Toast.makeText(context, "Generic failure",
                    Toast.LENGTH_SHORT).show();
            break;
        case SmsManager.RESULT_ERROR_NO_SERVICE:
            Toast.makeText(context, "No service",
                    Toast.LENGTH_SHORT).show();
            break;
        case SmsManager.RESULT_ERROR_NULL_PDU:
            Toast.makeText(context, "Null PDU",
                    Toast.LENGTH_SHORT).show();
            break;
        case SmsManager.RESULT_ERROR_RADIO_OFF:
            Toast.makeText(context, "Radio off",
                    Toast.LENGTH_SHORT).show();
            break;
        }

    }
}

在 onResume 中:

context.registerReceiver(receiver,new IntentFilter(SENT));

并在 onPause

context.unregisterReceiver(receiver);

【讨论】:

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