Note: Flutter relies on a full installation of Android Studio to supply its Android platform dependencies. However, you can write your Flutter apps in a number of editors; a later step discusses that. Install Android Studio. Download and install Android Studio. Start Android Studio, and go through the ‘Android Studio Setup Wizard'. I have installed Android Studio on my MacBook Air (OS Version 10.11 El Capitan) and have successfully written a small 'hello, world' app and installed on device (Nexus 7) and ran on AVD. All I want to do now is be able to build the app and install it on device from the command line as opposed to Android Studio. I'm following the directions here. In Visual Studio for Mac visual studio for mac fixed in: visual studio 2019 for mac version 8.8 preview 4 Fixed - Pending Release. Feedback Bot commented Oct 14, '20. The type initializer for 'Android.Runtime.JNIEnv in Visual Studio for Mac visual studio for mac crash macos 10.15 Fixed - Pending Release. Tony Nguyen commented Aug 13. Start the SDK Manager. In Visual Studio, click Tools Android Android SDK Manager. In Visual Studio for Mac, click Tools SDK Manager. In the lower right-hand corner, click the gear icon and select Repository Google (Unsupported): Install the Android Pie SDK packages, which are listed as Android SDK Platform 28 in the Platforms tab (for more information about using the SDK Manager, see Android SDK Setup). Just cd into the installed SDK path like this. Cd /Users///tools/bin &&./sdkmanager. Where mac-user is your username to the MAC. For example: cd /Users/user/android-sdk-macosx/tools/bin &&./sdkmanager.
-->How to get started developing apps for Android 9 Pie using Xamarin.Android.
Android 9 Pieis now available from Google. A number of new features and APIs arebeing made available in this release, and many of them are necessary totake advantage of new hardware capabilities in the latest Androiddevices.
This article is structured to help you get started in developingXamarin.Android apps for Android Pie. It explains how to install thenecessary updates, configure the SDK, and prepare an emulator or devicefor testing. It also provides an outline of the new features in AndroidPie and provides example source code that illustrates how to use someof the key Android Pie features.
Xamarin.Android 9.0 provides support for Android Pie. For moreinformation about Xamarin.Android support for Android Pie, see theAndroid P Developer Preview 3release notes.
Requirements
The following list is required to use Android Pie features inXamarin-based apps:
Visual Studio – Visual Studio 2019 is recommended.If you are using Visual Studio 2017, on Windows update toVisual Studio 2017 version 15.8 or later. On macOS,update to Visual Studio 2017 for Mac version 7.6 or later.
Xamarin.Android – Xamarin.Android 9.0.0.17 or later mustbe installed with Visual Studio (Xamarin.Android is automaticallyinstalled as part of the Mobile development with .NET Premiere pro mac vs windows. workload).
Java Developer Kit – Xamarin Android 9.0 developmentrequires JDK 8(or you can try the preview of Microsoft's distribution of theOpenJDK). JDK8 isautomatically installed as part of the Mobile development with .NETworkload.
Android SDK – Android SDK API 28 or later must beinstalled via the Android SDK Manager.
Getting started
To get started developing Android Pie apps with Xamarin.Android, youmust download and install the latest tools and SDK packages before youcan create your first Android Pie project:
Visual Studio 2019 is recommended. If you are using Visual Studio 2017,update to Visual Studio 2017 version 15.8or later. If you are using Visual Studio for Mac, update toVisual Studio 2017 for Mac version 7.6 or later.
Install Android Pie (API 28) packages and toolsvia the SDK Manager.
Create a new Xamarin.Android project that targets Android 9.0.
Configure an emulator or device for testing Android Pie apps.
Each of these steps is explained in the following sections:
Update Visual Studio
Visual Studio 2019 is recommended for building Android Pie apps using Xamarin.
If you are using Visual Studio 2017, update to Visual Studio 2017 version 15.8 or later (for instructions, seeUpdate Visual Studio 2017 to the most recent release). On macOS, update to VisualStudio 2017 for Mac 7.6 or later (for instructions, seeSetup and Install Visual Studio for Mac).
Install the Android SDK
To create a project with Xamarin.Android 9.0, you must first use theAndroid SDK Manager to install the SDK platform for Android Pie (APIlevel 28) or later.
Start the SDK Manager. In Visual Studio, click Tools >Android > Android SDK Manager. In Visual Studio for Mac, clickTools > SDK Manager.
In the lower right-hand corner, click the gear icon and select Repository > Google (Unsupported):
Install the Android Pie SDK packages, which are listed asAndroid SDK Platform 28 in the Platforms tab (for moreinformation about using the SDK Manager, seeAndroid SDK Setup):
If you are using an emulator, create a virtual device that supportsAPI Level 28. For more information about creating virtual devices,see Managing Virtual Devices with the Android Device Manager.
Start the SDK Manager. In Visual Studio, click Tools >Android > Android SDK Manager. In Visual Studio for Mac, clickTools > SDK Manager.
In the lower right-hand corner, click the gear icon and select Repository > Google (Unsupported):
Install the Android Pie SDK packages, which are listed asAndroid SDK Platform 28 in the Platforms tab (for moreinformation about using the SDK Manager, seeAndroid SDK Setup):
If you are using an emulator, create a virtual device that supportsAPI Level 28. For more information about creating virtual devices,see Managing Virtual Devices with the Android Device Manager.
Start a Xamarin.Android project
Create a new Xamarin.Android project. If you are new to Androiddevelopment with Xamarin, seeHello, Android tolearn about creating Xamarin.Android projects.
When you create an Android project, you must configure the versionsettings to target Android 9.0 or later. For example, to target yourproject for Android Pie, you must configure the target Android API levelof your project to Android 9.0 (API 28). It is recommended that youalso set your Target Framework level to API 28 or later. For more aboutconfiguring Android API levels, seeUnderstanding Android API Levels.
Configure a device or emulator
If you are using a physical device such as a Nexus or a Pixel, you canupdate your device to Android Pie by following the instructions inFactory Images for Nexus and Pixel Devices.
If you are using an emulator, create a virtual device for API level 28and select an x86-based image. For information about using the AndroidDevice Manager to create and manage virtual devices, seeManaging Virtual Devices with the Android Device Manager.For information about using the Android emulator for testing anddebugging, seeDebugging on the Android Emulator.
New features
Android Pie introduces a variety of new features. Some of these newfeatures are intended to leverage new hardware capabilities offered bythe latest Android devices, while others are designed to furtherenhance the Android user experience:
Display Cutout Support – Provides APIs to find thelocation and shape of the cutout at the top of the screen onnewer Android devices.
Notification Enhancements – Notification messages cannow display images, and a new
Personclass is used to simplifyconversation participants.Indoor Positioning – Platform support for theWiFi Round-Trip-Time protocol, which makes it possible for apps touse WiFi devices for navigation in indoor settings.
Multi-Camera Support – Offers the capability to accessstreams simultaneously from multiple physical cameras (such asdual-front and dual-back cameras).
The following sections highlight these features and provide brief codeexamples to help you get started using them in your app.
Display cutout support
Many newer Android devices with edge-to-edge screens have a DisplayCutout (or 'notch') at the top of the display for camera and speaker.The following screenshot provides an emulator example of a cutout:
To manage how your app window displays its content on devices with adisplay cutout, Android Pie has added a newLayoutInDisplayCutoutModewindow layout attribute. Sims 4 mac zip. This attribute can be set to one of thefollowing values:
LayoutInDisplayCutoutModeNever– The window is never allowed to overlap with the cutout area.
LayoutInDisplayCutoutModeShortEdges– The window is allowed to extend into the cutout area but only on the short edges of the screen.
LayoutInDisplayCutoutModeDefault– The window is allowed to extend into the cutout area if the cutout is contained within a system bar.
For example, to prevent the app window from overlapping with the cutoutarea, set the layout cutout mode to never:
The following examples provide examples of these cutout modes. Thefirst screenshot on the left is of the app in non-fullscreen mode. Inthe center screenshot, the app goes full-screen withLayoutInDisplayCutoutMode set toLayoutInDisplayCutoutModeShortEdges. Notice that the app's whitebackground extends into the display cutout area:
In the final screenshot (above on the right),LayoutInDisplayCutoutMode is set toLayoutInDisplayCutoutModeShortNever before it goes to full-screen.Notice that the app's white background is not allowed to extend intothe display cutout area.
If you need more detailed information about the cutout area on thedevice, you can use the newDisplayCutoutclass. DisplayCutout represents the area of the display that cannotbe used to display content. You can use this information to retrievethe location and shape of the cutout so that your app does not attemptto display content in this non-functional area.
For more information about the new cutout features in Android P, seeDisplay cutout support.
Notifications enhancements
Android Studio Mac Os
Android Pie introduces the following enhancements to improve themessaging experience:
Notification channels (introduced inAndroid Oreo) now supports blockingof channel groups.
The notification system has three new Do-Not-Disturb categories(prioritizing alarms, system sounds, and media sources). Inaddition, there are seven new Do-Not-Disturb modes that can be usedto suppress visual interruptions (such as badges, notificationlights, status bar appearances, and launching of full-screenactivities).
A new Personclass has been added to represent the sender of a message. Use ofthis class helps to optimize the rendering of each notification byidentifying people involved in a conversation (including theiravatars and URIs).
Notifications can now display images.
The following example illustrates how to use the new APIs to generate anotification that contains an image. In the following screenshots, atext notification is posted and is followed by a notification with anembedded image. When the notifications are expanded (as seen on theright), the text of the first notification is displayed and theimage embedded in the second notification is enlarged:
The following example illustrates how to include an image in an AndroidPie notification, and it demonstrates usage of the new Person class:
Create a
Personobject that represents the sender. For example, thesender's name and icon are included infromPerson:Create a
Notification.MessagingStyle.Messagethat contains the image to send,passing the image to the new Notification.MessagingStyle.Message.SetData method.For example:Add the message to a
Notification.MessagingStyleobject. For example:Plug this style into the notification builder. For example:
Publish the notification. For example:
For more information about creating notifications, seeLocal Notifications.
Indoor positioning
Android Pie provides support for IEEE 802.11mc (also known as WiFiRound-Trip-Time or WiFi RTT), which makes it possible for apps todetect the distance to one or more Wi-Fi access points. Using thisinformation, it is possible for your app to take advantage of indoorpositioning with an accuracy of one to two meters. On Android devicesthat provide hardware support for IEEE 801.11mc, your app can offernavigation features such as location-based control of smart appliancesor turn-by-turn instructions through a store:
The newWifiRttManagerclass and several helper classes provides the means for measuringdistance to Wi-Fi devices. For more information about the indoorpositioning APIs introduced in Android P, seeAndroid.Net.Wifi.Rtt.
Multi-Camera support
Many newer Android devices have dual-front and/or dual-back camerasthat are useful for such features as stereo vision, enhanced visualeffects, and improved zoom capability. Android P introduces a newMulti-CameraAPI that makes it possible for your app to use a logical camera(or logical multi-camera) that is backed by two or more physical cameras.To determine if the device supports a logical multi camera, you canlook at the capabilities of each camera on the device to see if itsupportsRequestAvailableCapabilitiesLogicalMultiCamera.
Android Pie also includes a newSessionConfigurationclass that can be used to help reduce delays during initial capture andeliminate the need to start and start the camera stream.
For more information about Multi-Camera support in Android P, seeMulti-camera support and camera updates.
Other features
In addition, Android Pie supports several other new features:
The new AnimatedImageDrawableclass, which can be used for drawing and displaying animated images.
A new ImageDecoder classthat replaces
BitmapFactory.ImageDecodercan be used to decode anAnimatedImageDrawable.Support for HDR (High Dynamic Range) video and HEIF (HighEfficiency Image File Format) images.
The JobScheduler has beenenhanced to more intelligently handle network-related jobs. The newGetNetwork methodof the JobParameters classreturns the best network for performing any network requests for a given job.
For more information about the latest Android Pie features, seeAndroid 9 features and APIs.
Behavior changes
When the Target Android Version is set to API level 28, there areseveral platform changes that can affect your app's behavior even ifyou are not implementing the new features described above. Thefollowing list is a brief summary of these changes:
Apps must now request foreground permission before using foregroundservices.
If your app has more than one process, it cannot share a singleWebView datadirectory across processes.
Directly accessing another app's data directory by path is no longer allowed.
For more information about behavior changes for apps targeting Android P,see Behavior Changes.
Sample code
AndroidPMiniDemois a Xamarin.Android sample app for Android Pie that demonstrates how toset display cutout modes, how to use the new Person class, and how tosend a notification that includes an image.
Summary
This article introduced Android Pie and explained how to install andconfigure the latest tools and packages for Xamarin.Android developmentwith Android Pie. It provided an overview of the key features availablein Android Pie, with example source code for several of these features.It included links to API documentation and Android Developer topics tohelp you get started in creating apps for Android Pie. It alsohighlighted the most important Android Pie behavior changes that couldimpact existing apps.
Update Android Studio Manually
Related links
