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Android Studio 2 2 Preview New UI Designer Constraint Layout

By Jamal Eason, Product Manager, Android

This week at Google I/O 2016 we launched Android Studio 2.2 Preview. This release is a large update that builds upon our focus to create a fast and productive integrated development environment (IDE) for Android. Developed in sync with the Android platform, Android Studio allows you to develop with the latest Android APIs and features. Since launching Android Studio at Google I/O just 3 years ago, we received great feedback from on you on what features you want the most. Today 92% of the top 125 apps & game developers on Google Play, plus millions of developers worldwide, use Android Studio. We want to continue to build features that will continue to make you more efficient when developing for Android and more productive.
Android Studio 2.2 Preview includes a portfolio of new features along the spectrum of developments, ranging from designing user interfaces to building and debugging your app in new ways. This preview includes the following new categories of features:
Design 

• Layout Editor: A new user interface designer that helps you visually design the layouts in your app. Features like blueprint mode and the new properties panel allow you to quickly edit layouts and widgets faster.
• Constraint Layout: A new powerful and flexible Android layout that allows you to express complex UIs without nesting multiple layouts. 
• Layout Inspector: Debug a snapshot of your app layout running on the Android Emulator or device. Inspect the view hierarchy and corresponding attributes.

Develop

• Firebase Plugin: Explore and integrate the suite of services offered by Firebase inside of Android Studio. Adding services like Analytics, Authentication, Notifications, and AdMob are just a few clicks away.
• Enhanced Code Analysis: Android Studio checks the quality of your Android app code. In addition to 260 Android lint and code inspections, this release includes new code quality checks for Java 8 language usage and a new inspection infrastructure for more cross-file analysis.
• Samples Browser: Referencing Android sample code is now even easier. Within the code editor window, find occurrences of your app code snippets in Google Android sample code to help jump start your app development.
• Improved C++ Support: Android Studio 2.2 improves C++ development with the ability to edit, build, and debug pre-existing Android projects that use ndk-build or CMake rather than Gradle. Additionally, the existing lldb C++ debugger is now even better with project type auto-detection and a Java language aware C++ mode that lets you use a single debugger process to inspect both Java language and C++ runtimes.
• IntelliJ 2016.1: Android Studio 2.2 includes all the latest updates from the underlying JetBrains product platforms IntelliJ.

Build

• Jack Compiler Improvements: For those using the new Jack compiler, Android Studio 2.2 adds support for annotation processing, as well as incremental builds for reduced build times.
• Merged Manifest Viewer: Diagnose how your AndroidManifest.xml merges with your app dependences across your project build variants. 

Test

• Espresso Test Recorder: Record Espresso UI tests simply by using your app as a normal user. As you click through your app UI, reusable and editable test code is then generated for you. You can run the generated tests locally, in your Continuous Integration environment, or in Firebase Test lab. 
• APK Analyzer: Drill into your APK to help you reduce your APK size, debug 64K method limit issues, view contents of Dex files and more.

Google I/O ‘16: What’s New in Android Development Tools

Deeper Dive into the New Features 

Design

• Layout Editor: Android Studio 2.2 features a new user interface designer. There are many enhancements but some of the highlights include: 
• Drag-and-drop widgets from the palette to the design surface or the component tree view of your app.
• Design surface has a blueprint mode to inspect the spacing and arrangement of your layout. 
• Properties panel now shows a curated set of properties for quick widget edits with a full sheet of advanced properties one click away.
• UI builder can edit menu and system preference files. 

The new Layout Editor in Android Studio 2.2 Preview

Edit Menus in the new Layout Editor

• Constraint Layout: This new layout is a flexible layout manager for your app that allows you to create dynamic user interfaces without nesting multiple layouts. It is distributed as a support library that is tightly coupled with Android Studio and backwards compatible to API Level 9. 

At first glance, Constraint Layout is similar to RelativeLayout. However, the Constraint Layout was designed to be used in Studio and it can efficiently express your app design so that you rely on fewer layouts like LinearLayout, FrameLayout, TableLayout, or GridLayout. Lastly, with the built-in automatic constraints inference engine. You can freely design your UI to your liking and let Android Studio do the hard work.

To help you get started, the built-in templates in the New Project Wizard in Android Studio 2.2 Preview now generate  a Constraint Layout. Alternately, you can right click on any layout in the new Layout Editor and select the Convert to ConstraintLayout option.

This is an early preview of the UI designer and Constraint Layout, and we will rapidly add enchantments in upcoming releases. Learn more on the Android Studio tools site.

Constraint Layout

Start Layout Inspector

• Layout Inspector: For new and existing layouts, many times you may want to debug your app UI to determine if your layout is rendering as expected. With the new Layout Inspector, you can drill into the view hierarchy of your app and analyze the attributes of each component of UI on the screen. 

To use the tool, just click on Layout Inspector Icon in the Android Monitor Window, and then Android Studio creates a snapshot of the current view hierarchy of your app for you to inspect.

Layout Inspector

Develop

• Firebase Plugin: Firebase is the new suite of developers services that can help you develop high-quality apps, grow your user base, and earn more money. Inside of Android Studio, you can add Firebase to a new or existing Android app with the new Assistant window. To access the Firebase features click on the Tools menu and then select Firebase. You will want to first setup the brand new Firebase Analytics as the foundation as you explore other Firebase services like Firebase Cloud Messaging or Firease Crash Reporting to add your application. Learn more about the Firebase integration inside Android Studio here.

Firebase Plugin for Android Studio

• Code Sample Browser: In addition to importing Android Samples, the Code Sample Browser is a menu option inside Android Studio 2.2 Preview that allows you to find high-quality, Google-provided Android code samples based on the currently highlighted symbol in your project. To use the feature, highlight a Variables, Types and Methods in your code then Right Click to show a context menu for Find Sample Code. The results are displayed in a bottom output box.   

Code Sample Browser

Build

• CMake and NDK-Build: For those of you using the Android NDK, Android Studio now supports building CMake and NDK-Build Android app projects by pointing Gradle at your existing build files. Once you’ve added your cmake or ndk-build project to Gradle, Android Studio will automatically open your relevant Android code files for editing and debugging in Studio.

For CMake users, just add the path to your CMList.txt file in the externalNativeBuild section of your Gradle file:

CMake Build in Android Studio

For NDK-Build Users, just add the path to your *.mk file in the section of your Gradle file:

NDK-Build in Android Studio

• Improved Jack Tools: The new Jack Toolchain compiles your Java language source into Android dex bytecode. The Jack compiler allows some Java 8 language features, like lambdas, to be used on all versions of Android. This release adds incremental build and full support for annotation processing, so you can explore using Java 8 language features in your existing projects.

To use incremental build with Jack add the following to your build.gradle file:

Enable Jack Incremental Compile Option

Jack will automatically apply annotations processors in your classpath. To use an annotation processor at compile-time without bundling it in your apk, use the new annotationProcessor dependency scope:

Enable Jack Annotation Processing

• Merged Manifest Viewer: Figuring out how your AndroidManifest merges with your project dependencies based on build types, flavors and variants is now easier with Android Studio. Navigate to your AndroidManifest.xml and click on the new Merged Manifest bottom tab. Explore how each node of your AndroidManifest resolves with various project dependencies.  

Merged Manifest Viewer

Test

• Espresso Test Recorder: Sometimes writing UI tests can be tedious. With the Record Espresso UI tests feature, creating tests is now as easy as just using your app. Android Studio will capture all your UI interactions  and convert them into a fully reusable Espresso Test that you can run locally or even on Firebase Test lab. To use the recorder, go to the Run menu and select Record Espresso Test.

Espresso Test Recorder

• APK Analyzer: The new APK Analyzer helps you understand the contents and the sizes of different components in your APK. You can also use it to avoid 64K referenced method limit issues with your Dex files, diagnose ProGuard configuration issues, view merged AndroidManifest.xml file, and inspect the compiled resources file (resources.arsc). This can help you reduce your APK size and ensure your APK contains exactly the things you expect.

The APK Analyzer shows you both the raw file size as well as the download size of various components in your APK. The download size is the estimated size users need to download when the APK is served from Google Play. This information should help you prioritize where to focus in your size reduction efforts.

To use this new feature, click on the Build menu and select Analyze APK… Then, select any APK that you want to analyze.

APK Analyzer

• Java-aware C++ Debugger:  When debugging C++ code on targets running N and above, you can now use a single, Java language aware lldb instance. This debugger continues to support great lldb features like fast steps and memory watchpoints while also allowing you to stop on Java language breakpoints and view your Java language memory contents.

• Auto Debugger Selection: Android Studio apps can now use debugger type “Auto.” This will automatically enable the appropriate debugger -- the Java language aware C++ debugger if enabled and otherwise the hybrid debugger for C++ projects.  Projects exclusively using the Java language will continue to use the Java language debugger.

Enable Auto Debugger for C++

Whats Next 

Download

If you are using a previous version of Android Studio, you can check for updates on the Canary channel from the navigation menu (Help ? Check for Update [Windows/Linux] , Android Studio ? Check for Updates [OS X]). This update will download a new version, and not patch your existing copy of Android Studio. You can also download Android Studio 2.2 Preview from canary release site.

For the Android Studio 2.2 Preview, we recommend you run a stable version alongside the new canary. Check out the tools site on how to run two versions at the same time.

We appreciate any feedback on things you like, issues or features you would like to see. Connect with us -- the Android Studio development team -- on our Google+ page or on Twitter. 

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A new method to measure touch and audio latency

There is a new addition in the arsenal of instruments used by Android and ChromeOS teams in the battle to measure and minimize touch and audio latency: the WALT Latency Timer.

When you use a mobile device, you expect it to respond instantly to your touch or voice: the more immediate the response, the more you feel directly connected to the device. Over the past few years, we have been trying to measure, understand, and reduce latency in our Chromebook and Android products.

Before we can reduce latency, we must first understand where it comes from. In the case of tapping a touchscreen, the time for a response includes the touch-sensing hardware and driver, the application, and the display and graphics output. For a voice command, there is time spent in sampling input audio, the application, and in audio output. Sometimes we have a mixture of these (for example, a piano app would include touch input and audio output).

Most previous work to study latency has focused on measuring a single round-trip latency number. For example, to measure audio latency, an app would measure time from app to speaker/mic and back to the app using the Dr. Rick ORang loopback audio dongle together with an appropriate app such as the Dr Rick O’Rang Loopback app or Superpowered Mobile Audio Latency Test App. Similarly, the TouchBot uses a fast camera to measure the round-trip delay from physical touch until a change on the screen is visible. While valuable, the problem with such a setup is that it’s very difficult to break down the latency into input vs output components.

An important innovation in WALT (a descendant of QuickStep) is that it synchronizes an external hardware clock with the Android device or Chromebook to within a millisecond. This allows it to measure input and output latencies separately as opposed to measuring a round-trip latency.

WALT is simple. The parts cost less than $50 and with some basic hobby electronics skills, you can build it yourself.

We’ve been using WALT within Google for Nexus and Chromebook development. We’re now opening this tool to app developers and anyone who wants to precisely measure real-world latencies. We hope that having readily accessible tools will help the industry as a whole improve and make all our devices more responsive to touch and voice.

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Grow your business on Google Play with help from the new Playbook for Developers app

Today, the Playbook for Developers mobile app is now generally available for Android devices. The app helps you stay up-to-date with the features and best practices to grow your business on Google Play. Thanks to all our beta testers over the last six weeks whose feedback helped us tweak and refine the app in preparation for launch. Here’s how you read and watch content in the Playbook for Developers app: Choose topics relating to your business interests to personalize My Playbook with curated articles and videos from Google and experts across the web. Explore the in-depth guide to Google’s developer products, with articles grouped by what you’re trying to do: develop, launch, engage, grow, and earn. Take actions on items – complete, share, save, or dismiss them – and read your Saved articles later, including offline if they’re written in the app. A data connection will be needed to read articles and videos from across the web.

The app supports Android 5.0 and above. If youre on an older device, check out our ebook, The Secrets to App Success on Google Play. We will be adding and updating content in the app to help you stay up-to-date and grow your business. Get the Playbook for Developers app today and then give us your feedback. The app is also available in the following languages: Bahasa Indonesia, Deutsch, español (Latinoamérica), le français, português do Brasil, ti?ng Vi?t, ??????? ?????, ???, ?? (??), ?? (??), and ???.

This is the second app we’ve released for Google Play developers. Get the Google Play Developer Console app to review your apps performance statistics and financial data, get notified about your apps status and publishing changes, and read and reply to user reviews on the go.

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Googles Visual Translation Supports 20 New Languages

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Blackberry Easy Flasher New Edition 2012 2016 Download Free

Here we have shared latest full & free setup of Blackberry Easy Flasher. You can download it free of cost. Blackberry Easy Flasher is a  free and useful tool for all Blackberry mobile phones. You can use as a flasher. Flashing of mobiles does at those stage if mobile is working slow or completely break with the reason of its outdated or corrupted firmware. If you will flash your phone with its latest flash files, your phone will be reset in its original settings, so you will need to take a backup of your data. After successful flashing you can restore your backup data to your safely. Please always flash your phone with updated firmware, because if you will flash phones with corrupted or outdated firmware, your mobile will restored in its original settings. If you wish to flash your phone himself by using its latest flash files you will need to follow some simple steps. You will need to Connect your Blackberry device to your PC and then from the program interface select OS Download. You will be directed to Blackberry website and the supported files available for your phone will be displayed.

Download the file you need and then use the Write flash button to load them on your phone. Now you can download latest setup of Blackberry Easy Flasher from below download links. We are always trying to share free and official site download links, so you can manage it easily. Official servers allowing visitors to download free apps, and they are releasing new updates for old apps. If you are facing difficulties during downloading just contact us via commenting, we will update download links very soon.
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MasterBox Tool Latest New Setup V3 2 848 Download Free

Flashing boxes are used for flash mobile phones. The official developers of MasterBox has been released latest and full setup of MasterBox and free downloading links are available for download. We are sharing free and official site downloading links. You can use this box for unlocking allover mobile phones. If you have little bit an experience in mobile flashing you can use this flashing box easily. It is very simple and easiest way to flashing or unlocking mobile phones. We will listed some important tips which are listed below.

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Google’s new Play Store algorithm to halve size of updates

The amount of data required for updating Google Play apps can really send your mobile bill through the roof, especially if you arent using Wi-Fi. Fortunately, Google has heard your concerns, and rolled out a new Delta algorithm, bsdiff, which reduces the app update size and lets you save on the data required for updating them.

Googles new algorithm does this by further compressing the size of patches for apps and games. According to a blog post by Anthony Morris, SWE Google Play, for about 98 percent of app updates from the Play Store, only deltas to APK files are downloaded and merged with the existing files to reduce the size of the updates. Now, Googles new algorithm will further reduce the patches by up to 50 percent. As he explains in the post,

"For approximately 98 percent of app updates from the Play Store, only changes (deltas) to APK files are downloaded and merged with the existing files, reducing the size of updates. We recently rolled out a delta algorithm, bsdiff, that further reduces patches by up to 50 percent or more compared to the previous algorithm. Bsdiff is specifically targeted to produce more efficient deltas of native libraries by taking advantage of the specific ways in which compiled native code changes between versions. To be most effective, native libraries should be stored uncompressed (compression interferes with delta algorithms)."

Google has also applied the new algorithm to APK Expansion Files to allow users to include additional large files of up to 2GB in size with their apps. This means that the download size of your initial installs will now be lower by about 12 percent, and your updates by approximately 65 percent.

"APK Expansion Files allow you to include additional large files up to 2GB in size (e.g. high resolution graphics or media files) with your app, which is especially popular with games. We have recently expanded our delta and compression algorithms to apply to these APK Expansion Files in addition to APKs, reducing the download size of initial installs by 12 percent, and updates by 65 percent on average."

Google really cares about you and doesnt want you to pay unnecessarily high data charges when you update your favorite apps. So it has also updated the Play Store descriptions to include the actual download size of the apps instead of the size of their APKs. So instead of seeing just the app size earlier on Google Play and remaining in the dark about how much data and storage the update would actually consume, youll now get to see the precise size of the app you want to install or update. Cool, huh?

If the changes made to Google Play arent reflecting on your screen yet, dont panic because, as always, they are being rolled out to all users and should reach you sometime in the coming weeks.

Let us know in the comments below if you think Google Plays new algorithm will help reduce your data usage!

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Koushs new screen sharing app Inkwire is available in beta on the Play Store

Koushik Dutta, a.k.a Koush, is one of Androids most popular developers. From the custom recovery ClockworkMod to ROM Manager, to Allcast, to Vysor, his apps are downloaded almost religiously amongst power users, developers, and tinkerers. In the last few hours, hes made a new app available in beta, named Inkwire.

Based on Koushs previous app, Vysor, which mirrors your Android devices screen on a computer, Inkwire goes one step further and shares the screen to another Android device, letting someone else help with a problem or issue, which could be especially useful for tech support workers or, as Koush says, independent app developers.

Koushs new screen-sharing app Inkwire is available in beta on the Play Store was written by the awesome team at Android Police.

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An updated app guide and new video tips to help you find success on Google Play

Posted by Dom Elliott, The Google Play Apps & Games team

Last year, we introduced our first playbook for developers, “The Secrets to App Success on Google Play”, to help you grow your app or game business, which has been downloaded more than 200,000 times.. Many new features have since been announced on the platform – from Store Listing Experiments and beta testing improvements to App Invites and Smart Lock for Passwords.

Get the second edition of “The Secrets to App Success on Google Play”

Hot off the press, you can now download the second edition to learn about all the new tools and best practices for improving the quality of your app, growing a valuable audience, increasing engagement and retention, and earning more revenue.

Get the book on Google Play in English now or you can sign-up to be notified when the booklet is released in the following languages: Bahasa Indonesia, Deutsch, español (Latinoamérica), le français, português do Brasil, ti?ng Vi?t, ??????? ?????, ???, ???, ?? (??), ?? (??), ???. Based on your feedback, the guide was updated to work seamlessly in the Google Play Books app. If you prefer, you can also download a PDF version from the Android Developers website.

New videos with tips to find success on Google Play

To accompany the guide, watch the first two episodes in a new ten-part video series of actionable tips you can start using today to achieve your business objectives. Subscribe to the Android Developers channel on YouTube and follow +Android Developers to watch the new videos as they’re released weekly.

Let us know your feedback

Once you’ve checked out the guide and the videos, we’d again love to hear your feedback so we can continue to improve our developer support, please let us know what you think.

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Explore the new Google Play Developer Policy Center

More than 1 billion Android users come to Google Play every month to discover their favorite apps and games, enabling developers to reach a vast global audience and build successful businesses on the platform. To maintain a positive experience for both users and developers, the Google Play Developer Program Policies play a central role in helping make Google Play an open, safe and enjoyable ecosystem by educating the community and defining appropriate content and activities in the store.

We constantly listen to our developers and users to maintain fair and defined policies and look for ways to improve how we communicate those policies to help developers avoid accidental pitfalls. As part of that effort, we’ve redesigned our Developer Program Policy Center to communicate our policies with greater transparency and clarity. This redesign includes:

• Thematic organization of policies, so it is easier for developers to find relevant policies and understand the broad principles behind them
• Visual examples and detailed guidelines for the most common violations based on developer feedback
• Expanded information on our policy enforcement to help resolve violations
• A visual refresh embracing Material Design to help developers more intuitively find the information they are looking for on mobile or desktop

From making it easier to self-correct minor violations in minutes using the app publishing status feature to improving our policy communication, the new policy center is part of our ongoing effort to improve the developer experience. We invite you to explore the new policy center and and share your feedback.

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Inkwire is a new app that could improve the remote support experience

Update, July 22: Duttas Inkwire is now available as a beta. To try it out you will need to join a Google Plus community and then download it from the Play Store. You can get started right here.

Original post, July 15: You may recognize the name Koushik Dutta – hes the developer behind Vysor, an app that lets you control your Android smartphone on a desktop, as well as other popular Android apps. And hes back again, this time with an app called Inkwire.

Vysor and Inkwire do similar tasks, but are different in significant ways. Before Vysor, apps that let you remotely access and control your smartphone required rooting, or the frame rates simply dropped to a point where even simple tasks like typing became torture.

Vysor, however, was one of the first to offer an intuitive and responsive experience. All you had to do was launch the Vysor extension on Chrome, connect and turn on USB debugging on your device, and you could control your phone with your mouse and keyboard. Simple as that.

Inkwire is set to give you the same easy method of remote access, except you dont need a desktop or ADB. According to Koush, Inkwire is "just plain old Android to Android screen sharing, without the cords." The app generates a code that is shared with another user to grant them access to your screen.

Since ADB is not required, you wont be able to control the remote users smartphone directly; however, Inkwire will let users draw over the shared screens to show where to touch. On top of that, Inkwire supports voice chat, which will no doubt facilitate communication between users.

If Inkwire is able to provide a smooth and intuitive but also secure experience, it may shift the paradigm of troubleshooting your Android device. No longer will you have to walk around your neighborhood, looking for a phone repair shop, as many things could be done virtually.

Read more: Best remote access apps for Android

Although we dont know the official release date for the app just yet, Koush promises that the beta link is coming soon to this community page for Inkwire.

Do you think Inkwire would be useful? Let us know in the comments below!

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Introducing a New Course on Developing Android Apps for Auto

Posted by Wayne Piekarski, Developer Advocate

Android Auto brings the Android platform to the car in a way that’s optimized for the driving experience, allowing the user to keep their hands on the wheel, and their eyes on the road. To learn how to extend your existing media and messaging apps to work within a car, we collaborated with Udacity to introduce a new course on Ubiquitous Computing with Android Auto.

Designed by Developer Advocates from Google, the course shows you how to take advantage of your existing Android knowledge to work on this new platform. The best part is that Android Auto is based on extensions to the regular Android framework, so you dont need to rewrite your existing apps to support it. Youll learn how to implement messaging apps, by using Notification extensions. Youll also learn how audio players just work on Android Auto when you use the Android media APIs. In both cases, we work through some simple Android samples, and then show what changes are needed to extend them for Android Auto. Finally, we show a complete music playing sample, and how it works across other platforms like Android Wear.

If you have an interest in Android-based messaging or media apps, then you need to learn about Android Auto. Users want to be able to take their experience to other places, such as their cars, and not just on their phones. Having Auto support will allow you to differentiate your app, and give users another reason to try it.

This class is part of our larger series on Ubiquitous Computing across Google platforms, such as Android Wear, Android Auto, Android TV, and Google Cast. Designed as short, standalone courses, you can take any course on its own, or take them all! The Android Auto platform is a great opportunity to add functionality that will distinguish your app from others. This Udacity course will get you up to speed quickly with everything you need to get started.

Get started now and try it out at no cost, your users are waiting!

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