Android broadcast classification and android Broadcast

Android broadcast classification and android Broadcast

Android broadcast is divided into two categories:
1. after a normal broadcast, broadcast, or broadcast is sent, all applications that meet the conditions can obtain the data in the broadcast. The disadvantage is that the application cannot obtain the data in the broadcast and cannot pass it to other applications that receive the broadcast after modification;
2. ordered broadcast: orderbroadcast. After the broadcast is sent, each application receives the broadcast based on the application's priority. The modified data after the broadcast is received by the application with a higher priority can also be transmitted to the later receiver, an application with a higher priority can also call the abrotbroascast method to stop the downward propagation of the broadcast. The priority is controlled by the android: prioioty attribute of the application. The value ranges from-1000 to 1000, the higher the value, the higher the priority.