In the LAN technology, the conflict domain and the broadcast domain these two words have the very big influence to the network performance, below lets us see how these two words affect the network performance.
The conflict domain of LAN technology
If you want to drive out of the freeway, but every time you try, there's a car blocking your way. If forced out, collisions can occur, similar to what happens on Ethernet using a carrier-listening multicha
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Body
Intent. ACTION_AIRPLANE_MODE_CHANGED;
// Disable or enable broadcast in flight mode
Intent. ACTION_BATTERY_CHANGED;
// The charging status or the battery power changes
// The battery charging status and charge lev
Intent. ACTION_AIRPLANE_MODE_CHANGED;
// Disable or enable broadcast in flight mode
Intent. ACTION_BATTERY_CHANGED;
// The charging status or the battery power changes
// The battery charging status and charge level change. The broadcast cannot be received through the formation declaration, and only registered through Context. registerReceiver ()
Intent. ACTION_BATTERY_LOW;
// Indicates the battery power
Broadcast data cannot be received after UDP socket is bound to an IP address.
Fannyth05-11-10, because my program is running on a machine with multiple NICs, So I bound the IP address of the NIC to the socket
Server_addr.sin_addr.s_addr = inet_addr (servip); but then the broadcast data cannot be received? At the same time, when I was bound to a broadcast address,
001 intent.action_airplane_mode_changed; 002//Broadcast When airplane mode is turned off or on003 004 intent.action_battery_changed; 005//charging status, or battery power change 006//battery charge status, charge level change, cannot receive this broadcast through the formation statement, only through Context.registerreceiver () registration 007 008 Intent.action_battery_low; 009//indicates low batte
intent.action_airplane_mode_changed; Broadcast when airplane mode is turned off or turned onintent.action_battery_changed; Charging status, or the battery's power is changedBattery charge status, charge level change, cannot receive this broadcast through the formation statement, only through Context.registerreceiver () registrationintent.action_battery_low;//indicates low battery powerintent.action_battery_
The details are as follows:
intent.action_airplane_mode_changed;Broadcast when flight mode is closed or turned on
intent.action_battery_changed;Charge status, or the battery's electricity changesBattery charging status, charge level change, can not receive this broadcast through the formation Declaration, only through the Context.registerreceiver () registration
Intent.action_battery_low;Indicates a low
Broadcastreceiver (broadcast receiver) is one of the four components of Android.The following is an overview of Broadcastreceiver in Android Doc:The ① broadcast receiver is a component that focuses on receiving broadcast notification information and making the appropriate processing. Very many broadcasts originate from system code-for example, notification time z
Broadcastreceiver (broadcast receiver) is one of the four components of Android.The following is an overview of Broadcastreceiver in Android Doc:The ① broadcast receiver is a component that focuses on receiving broadcast notification information and making the appropriate processing. Very many broadcasts originate from system code-for example, notification time z
Android source code Analysis--BroadcastBroadcasting is a way of delivering messages between components. The implementation of broadcasting mechanism is based on the binder interprocess communication.Binder interprocess communication and broadcast differences: In binder, the client component and service component must first obtain a proxy object for the service before the client component has to know the presence of the service component beforehand. Th
Requirements for this chapter: first, let the app poll for new results and notify the user when something is discovered, even if the app hasn't been opened since the user restarted the device. Second, ensure that users do not notice new results when they use the app.1. General intent and broadcast intentMany system components need to know about the occurrence of certain events (WiFi signal is sometimes not, call incoming, etc.), in order to meet such
The broadcast receiver is used to receive and process broadcast notifications (broadcastannouncements ).
Most broadcasts are initiated by the system, such as region change, insufficient power, and incoming calls.
The program can have any number of broadcast receivers to respond to the notifications it deems important.
Broadca
I remember when I went to school, each class will have a speaker in the classroom, these speakers are connected to the school's broadcast room, once there is any important notice, will broadcast a radio to inform the teachers and students. Similar working mechanisms are also widely used in the computer field, if you understand the principle of network communication should be aware that in an IP network rang
Preface : The previous article recorded Service the use, this time to record one of the other four components BroadcastReceiver . It mainly introduces the difference between two types of broadcast and registration.
BroadcastReceiverBroadcast receivers are used to receive broadcasts sent by systems or other programs, including their own programs.
I. Registration of BroadcastsIn Android, if we want to receive
What is Broadcastreceiver?
Broadcastreceiver, a broadcast receiver, is a system global listener that listens to the global broadcast message of the system, so it can easily communicate between system components.
Broadcastreceiver is a listener, but it is different from the onxxxlistener used before, those are just program-level listeners, running in the process of the specified program, and when the progr
------This article reproduced from the Android plug-in principle analysis-broadcast management This series of articles is really good to write!1, overviewIn order to realize the plug-in of activity we have paid a great deal of effort; So what are the other components of the Android system, such as Broadcastreceiver,service and ContentProvider?Much simpler than activity,broadcastreceiver-the life cycle of a broadca
We described the broadcast mechanism of the Android system, in essence, it is a message subscription/advertisement mechanism, so the first step to use such a message-driven model is to subscribe to the message, and for Android applications, the subscription message is actually a register broadcast receiver, This article explores how the Android app will register a broad
Broadcast in 1.Android is divided into two main forms1) Standard broadcastis a fully asynchronous broadcast that, after broadcast, all broadcast receivers receive broadcasts almost at the same time, so they are not sequential and therefore more efficient but also meancannot be truncated.2) Orderly broadcastis a synchro
Understanding broadcast mechanisms in real life
When we hear the broadcast, we will first think of the village broadcast when we were a child. Every activity in the village is broadcast. Listening to a radio is also a kind of broadcast. There are many radio stations in the
1.Android Broadcast Mechanism overviewAndroid broadcasts are divided into two areas: the broadcast sender and the broadcast receiver, usually broadcastreceiver refers to the broadcast recipient (broadcast receiver). Broadcast as a
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