您是否必须在 Android 个应用程序中注销 IntentService 广播接收器

Question

我当前的 Android 应用程序使用 IntentService 来调用 SOAP WebService。

IntentService returns SOAP 响应数据通过其 onHandleIntent() 方法

中的 LocalBroadcastManager 调用 activity

final Intent localIntent = new Intent(FASTEST_BROADCAST_ACTION);
localIntent.putExtra(FASTEST_EXTENDED_DATA, xmlUtility.getFastestServiceId());
LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(localIntent);

我的调用activity在其onResume()方法

中注册了一个广播监听器，如下所示

@Override
protected void onResume() {
        super.onResume();

        mDepartureBroadcastReceiver = new DepartureBroadcastReceiver();
        final IntentFilter statusIntentFilter = new IntentFilter(FASTEST_BROADCAST_ACTION);
        LocalBroadcastManager.getInstance(getApplicationContext()).registerReceiver(mDepartureBroadcastReceiver, statusIntentFilter);
        Log.v(LOG_TAG, "Register receiver = " + mDepartureBroadcastReceiver);

    }

一切正常，调用 Web 服务并将所需的响应数据返回到我的 activity。

当我离开当前 activity 并尝试调用 unregisterReceiver

时出现问题

我的 onPause 方法中有这段代码：-

   /**
     * Dispatch onPause() to fragments.
     */
    @Override
    protected void onPause() {
        super.onPause();

        if (mDepartureBroadcastReceiver == null) {
            //INTENTIONALLY LEFT BLANK
        } else {
            try {
                Log.v(LOG_TAG, "About to unregister receiver");
                unregisterReceiver(mDepartureBroadcastReceiver);
                Log.v(LOG_TAG, "Successfully unregistered receiver");
            } catch (final Exception exception) {
                Log.e(LOG_TAG, "Failed unregistered receiver", exception);
            } finally {
                mDepartureBroadcastReceiver = null;
            }
        }
    }

我总是遇到这个异常：-

Failed unregistered receiver java.lang.IllegalArgumentException: Receiver not registered

接收者注册：-

注册接收者=com.aaa.bbb.departure.DepartureBroadcastReceiver@2879575

匹配异常：-

java.lang.IllegalArgumentException: Receiver not registered: com.aaa.bbb.departure.DepartureBroadcastReceiver@2879575

为什么会出现这个异常？

为什么我不能注销这个接收器？

是否是因为我在取消注册之前 IntentService 完成（例如调用它的 onDestroy() 方法）？

Answer 1

您没有使用 LocalBroadcastManager 注销。

你需要用到这个LocalBroadcastManager.getInstance(getApplicationContext()).unregisterReceiver(mDepartureBroadcastReceiver);

您是否必须在 Android 个应用程序中注销 IntentService 广播接收器

Do you have to unregister IntentService Broadcast receivers in Android Applications

android

intentservice

android-broadcastreceiver