56.3 Obtaining Results from a Broadcast
When a broadcast intent is sent using the sendBroadcast() method, there is no way for the initiating activity to receive results from any broadcast receivers that pick up the broadcast. In the event that return results are required, it is necessary to use the sendOrderedBroadcast() method instead. When a broadcast intent is sent using this method, it is delivered in sequential order to each broadcast receiver with a registered interest.
The sendOrderedBroadcast() method is called with a number of arguments including a reference to another broadcast receiver (known as the result receiver) which is to be notified when all other broadcast receivers have handled the intent, together with a set of data references into which those receivers can place result data. When all broadcast receivers have been given the opportunity to handle the broadcast, the onReceive() method of the result receiver is called and passed the result data.
