Miracast是一项伟大的技术，有时它可以极大地缓解您的生活。无论是因为您需要进行演示，而且您能以最快的方式将设备的屏幕投影到支持Miracast的投影仪，还是因为您想在大屏幕电视上观看智能手机上的电影，Miracast都能做到所有这一切。幸运的是，如今大多数Android智能手机和平板电脑都支持Miracast，尽管并非所有电视和显示器都支持。但是，即使您的电视或显示器(TV or monitor)不提供Miracast，您也可以随时使用Miracast 加密狗(Miracast dongle)进行无线投影。以下是如何使用Miracast将Android 设备(Android device)的屏幕镜像到任何显示器：
注意：(NOTE:)出于编写本教程的目的，我们使用了三星 Galaxy S4 智能手机，但所有(Samsung Galaxy S4 smartphone)Android设备上的过程都相似。
无线投影(wireless projection)需要什么？
在继续学习本教程之前，请仔细检查您是否有以下可用项目：
- 具有内置Miracast 支持(Miracast support)的电视或显示器(TV or monitor)或...
- 像Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)这样的 Miracast 加密狗。加密狗需要插入带有HDMI 端口(HDMI port)和有源USB 端口的(USB port)电视或显示器(TV or monitor)。TV/monitor与您的Android 设备(Android device)的距离不应超过 7 米或 23 英尺。如果显示器没有供电的USB 端口(USB port)，您可以使用USB 智能手机充电器并将(USB smartphone charger and plug)您的Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)插入其中，以便获得所需的电源。
- 支持Miracast的Android 智能手机或平板电脑(Android smartphone or tablet)。您必须检查智能手机的官方硬件规格，以确保它支持Miracast 技术(Miracast technology)。
如果您拥有此列表中的所有内容，请继续执行以下步骤：
如何将Android 设备(Android device)的屏幕投影到Miracast 显示器(Miracast display)
您要做的第一件事是打开您的Android设备设置(Settings)。有多种方法可以做到这一点，但在所有各种Android智能手机和平板电脑中常见的一种方法是打开应用程序(Apps)视图并点击设置(Settings)图标。这个图标通常看起来像一个齿轮(cog wheel)。
在设置(Settings)屏幕上，查找名为Screen Mirroring、Cast screen、Wireless display、Allshare Cast或类似内容的设置。硬件开发人员为Miracast(Miracast)使用各种名称，因此此设置的名称将根据您的Android 设备(Android device)而有所不同。找到它后，点击它。
在我们的三星 Galaxy S4(Samsung Galaxy S4)上，Miracast被称为屏幕镜像，它位于(Screen Mirroring)连接(Connections)设置列表的底部。
当您打开Miracast 屏幕(Miracast screen)时，您的Android 智能手机或平板电脑(Android smartphone or tablet)应该会自动开始搜索附近可用的已启用Miracast的屏幕。
如果您使用的是Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)，它应该会检测到名为MicrosoftDisplayAdapter_EF的设备。
点击您要连接的Miracast 显示器的名称。(Miracast display)
稍等(Wait)片刻，直到您的Android 设备与(Android device)Miracast 显示器(Miracast display)建立无线连接。这应该不会花很长时间。
建立连接后，您的Android 智能手机或平板电脑(Android smartphone or tablet)应该会通知您。即使没有，您也应该通过查看您要连接的显示器或电视来确认。(monitor or TV)它现在应该镜像您的Android 设备(Android device)的显示。
现在，您的Android 屏幕上(Android screen)显示的所有内容也将显示在您的电视或显示器(TV or monitor)上。哪个(Which)很棒，对吧？
如何停止在启用Miracast的显示器上投射Android 设备的屏幕(Android device)
有一天，您不再希望将Android 智能手机或平板电脑(Android smartphone or tablet)的屏幕镜像到您连接的Miracast 显示器上。(Miracast display)要关闭无线连接(wireless connection)，请按照我们在本指南上一部分中显示的相同步骤进入Miracast设置屏幕。(Miracast)
然后，查找名称为Disconnect、End connection或Disable的选项。例如，在我们的三星 Galaxy S4(Samsung Galaxy S4)上，这称为End connection。只需轻按此按钮即可停止从Android 设备(Android device)无线投影屏幕。
而已！
结论
如您所见，通过Miracast无线投影您的屏幕在(Miracast)Android 设备(Android device)上非常容易。不幸的是，Miracast是一个标准，它不会强制硬件制造商在他们销售的所有设备上使用相同的名称 - Miracast 。因此，您在尝试设置Miracast 连接(Miracast connection)时可能遇到的唯一不便之处是在您的Android 设备(Android device)上查找该连接的确切名称。您在Android 设备上使用过(Android device)Miracast吗？你觉得有用还是没用？在下面给我们留言！
How to wirelessly project to a TV or monitor from Android, using Miracast
Mіracast is a great pieсe of technology, one that, at times, it can eaѕe your life a lot. Whether it's because you need tо make a presentation and the fastest way you can do it is project your device's screen to a Miracast enabled projector, or because you want to watch a movie you have on your smartphone оn a largе screen TV, Miracast can do all that. Fortunately, most Android smartphones and tablets these days support Mirаcаst, although not all TVs and monitors do the same. However, even і f your TV or monitor doesn't offer Miracast, you can always use a Miracast dongle to projеct wirelessly. Here's how to uѕe Miracast to mirror the screen of your Android device to аny display:
NOTE: For the purpose of writing this tutorial, we used a Samsung Galaxy S4 smartphone, but the procedure is similar on all Android powered devices.
What do you need for the wireless projection?
Before you move forward with this tutorial, double check that you have the following items available:
- A TV or monitor with built-in Miracast support or...
- A miracast dongle like the Microsoft Wireless Display Adapter. The dongle needs to be plugged into a TV or monitor with both an HDMI port and a powered USB port. The TV/monitor should not be more than 7 meters or 23 feet away from your Android device. If the display doesn't have a powered USB port, you can use a USB smartphone charger and plug in your Microsoft Wireless Display Adapter into it, so that it gets the power it needs.
- A Miracast enabled Android smartphone or tablet. You must check your smartphone's official hardware specifications to ensure that it has support for the Miracast technology.
If you have everything on this list, then go ahead and follow these steps:
How to project the screen of your Android device to a Miracast display
The first thing you'll have to do is open your Android's device Settings. There are various ways to do that, but one method that's common among all the various Android smartphones and tablets is to open the Apps view and tap on the Settings icon. This icon usually looks like a cog wheel of sorts.
On the Settings screen, look for a setting called Screen Mirroring, Cast screen, Wireless display, Allshare Cast or anything similar. Hardware developers use all sorts of names for Miracast, so the name of this setting will vary depending on your Android device. Once you've found it, tap on it.
On our Samsung Galaxy S4, Miracast is called Screen Mirroring and it's found at the bottom of the Connections settings list.
When you open the Miracast screen, your Android smartphone or tablet should automatically start searching for nearby available Miracast enabled screens.
If you are using a Microsoft Wireless Display Adapter , it should detect a device named MicrosoftDisplayAdapter_EF.
Tap on the name of the Miracast display to which you want to connect.
Wait for a few moments until your Android device establishes the wireless connection to the Miracast display. This shouldn't take long.
Once the connection is made, your Android smartphone or tablet should let you know about it. And even if it doesn't, you should have your confirmation just by looking at the monitor or TV to which you wanted to connect. It should now mirror the display of your Android device.
Everything that's displayed on your Android screen is going to also be displayed on your TV or monitor now. Which is awesome, right?
How to stop projecting the screen of your Android device on the Miracast enabled display
There will come a time when you no longer want to mirror the screen of your Android smartphone or tablet on the Miracast display to which you connected to. In order to close the wireless connection, get to the Miracast settings screen, by following the same steps we've shown in the previous section of this guide.
Then, look for an option that has a name like Disconnect, End connection or Disable. For instance, on our Samsung Galaxy S4, this is called End connection. A tap on this button is all you have to do in order to stop wirelessly projecting the screen from your Android device.
That's it!
Conclusion
As you've seen, wirelessly projecting your screen via Miracast is something that's very easy to do on Android devices. Unfortunately, Miracast is a standard that doesn't force hardware manufacturers to use the same name - Miracast - on all the devices they sell. As such, the only inconvenience you might encounter while trying to set up a Miracast connection is finding what exactly this is called on your Android device. Have you used Miracast on Android devices? Do you find it useful, or not? Leave us a comment below!
