Download games for android jelly bean 41

Daydream lets you create powerful interactive screensavers that display any kind of content. Daydreams are similar to Activities and can do anything that Activity can do — from rendering a UI hierarchy without using RemoteViews to drawing directly using Canvas, OpenGL, SurfaceTexture, and more.

When multiple external displays are available, you can create as many Presentations as you need, with each one showing unique content on a specific display.

Your app can also receive callbacks when displays are added or removed or when their capabilities change, to better manage your content on external displays. Your app just gives the display to use, a theme for the window, and any unique content to show. The Presentation handles inflating resources and rendering your content according to the characteristics of the targeted display.

The system manages your app in each user space just as it does in a single-user environment. You can extend app widgets to run on the lock screen, for instant access to your content. Users can add as many as five lock screen widgets, choosing from widgets provided by installed apps. The lock screen displays each widget in its own panel, letting users swipe left and right to view different panels and their widgets.

To help you test your app more easily in other locales, Android 4. Pseudo-locales simulate the language, script, and display characteristics associated with a locale or language group. Currently, you can test with a pseudo-locale for Accented Englishwhich lets you download games for android jelly bean 4.1 how your UI works with script accents and characters used in a variety of European languages.

Multiple users can run the same copy of an APK because the system creates a new instance for each user, including a download games for android jelly bean 4.1 data directory. For developers, multi-user support is transparent — your apps do not need to do anything special to run normally in a multi-user environment and there are no changes you need to make in your existing or published APKs.

After discovery, apps can use the API to resolve the service to an IP address and port through which it can establish a socket connection. You can take advantage of this API to build new features into your apps. For example, you could let users connect to a webcam, a printer, or an app on another mobile device that supports Wi-Fi peer-to-peer connections.

For each device, you can check for supported GATT services by UUID and manage connections by device ID and signal strength. You can connect to a GATT server hosted on the device and read or write characteristics, or register a listener to receive notifications whenever those characteristics change. You can implement support for any GATT profile. You can read or write standard characteristics or add support for custom characteristics as needed.

The KeyChain API now provides a method that allows applications to confirm that system-wide keys are bound to a hardware root of trust for the device. This provides a place to create or store private keys that cannot be exported off the device, even in the event of a root or kernel compromise. Using the APIs, apps can download games for android jelly bean 4.1 or store private keys that cannot be seen or used by other appsand can be added to the keystore without any user interaction.

Users remain in control and can long-press any notification to get information about the sender and optionally disable further notifications from the app. App Widgets can resize automatically to fit the home screen and load different content as their sizes change. New App Widget APIs let you take advantage of this to optimize your app widget content as the size of widgets changes.

Now, the withLayer method on ViewPropertyAnimator simplifies this process with a single method call. A new transition type in LayoutTransition enables you to automate animations in response to all layout changes in a ViewGroup.

The Nexus 10 tablet is the first device to support this integration. The new options expose features for debugging and profiling your app from any device or emulator. New developer options give you more ways to profile and debug on a device. In most cases, the new platform technologies and enhancements do not directly affect your apps, so you can benefit from them without any modification.

For example, they can declare the capability to filter key events, retrieve window content, enable explore-by-touch, or enable web accessibility features. In some cases, services must declare a capability attribute before they can access related platform features.

For example, you can now create multiple instances of a media codec, queue input buffers, and receive output buffers in return. In addition, the media codec framework supports protected content. Apps can query for an available codec that is able to play protected content with a DRM solution available on the device. USB audio output support allows hardware vendors to build hardware such as audio docks that interface with Android devices.

Apps with permission to access and change Wi-Fi can configure authentication credentials for a variety of EAP and Phase 2 authentication methods. Android now uses SELinuxa mandatory access control MAC system in the Linux kernel to augment the UID based application sandbox. This protects the operating system against potential security vulnerabilities.

Download games for android jelly bean 4.1 a user touches the screen, the system notifies the service that a generic touch interaction has started.

Apps can initiate discovery for a specific service and filter the list of discovered devices to those that actually support the target service or application. On the other hand, your app can advertise the service it provides to other devices, which can discover it and then negotiate a connection.

To save storage space, Google Play downloads an APK only if it's not already installed by another user on the device. If the app is already installed, Google Play records the new user's installation in the usual way but doesn't download another copy of the app.

Apps that depend on Wi-Fi for location services can now ask users to enable scan-only mode from Wi-Fi advanced settings. Wi-Fi scan-only mode is not dependent on device hardware and is available as part of the Android 4. New sensor types allow apps to better manage sensor readings. Uncalibrated gyroscope and uncalibrated magnetometer sensors report raw measurements as well as estimated biases to apps.

You can now create transparent overlays on top of Views and ViewGroups to render a temporary View hierarchy or transient animation effects without disturbing the underlying layout hierarchy.

The label for each View is available to accessibility download games for android jelly bean 4.1 through AccessibilityNodeInfo. On supported devices, apps can use a new HDR camera scene mode to capture an image using high dynamic range imaging techniques. Additionally, the framework now provides an API to let apps check whether the camera shutter sound can be disabled.

They can play video and audio and they can even accept direct user interaction. You download games for android jelly bean 4.1 provide multiple daydreams in your app and you can offer distinct content and display settings for each. Apps can build on this to deliver new kinds of interaction and entertainment experiences to users. Apps interact with displays through a new display manager system service.

Your app can function as either client or server and can transmit and receive data in either mode. Support for Bluetooth Smart Ready is already available on Nexus 7 and Nexus 4 devices and will be supported in a growing number of Android-compatible devices in the months ahead.

Also added in Android 4. To give accessibility services download games for android jelly bean 4.1 into the meaning of Views for accessibility purposes, the framework provides new APIs for associating a View as the label for another View.

It then tracks the speed of the touch interaction and determines whether it is a touch exploration slow or accessibility gesture fast and notifies the service. When the touch interaction ends, the system notifies the service. The system provides a new global accessibility option that lets an accessibility service open the Quick Settings menu based on an action by the user.

This greatly simplifies discovery and pairing for users and lets apps take advantage of Wi-Fi P2P more effectively. With Wi-Fi P2P service discovery, you can create apps and multiplayer games that can share photos, videos, gameplay, scores, or almost anything else — all without requiring any Internet or mobile network.

Apps can download games for android jelly bean 4.1 invalidation on the next vsync frame — a good way to schedule animation when the app is not using the animation framework.

On-screen GPU profiling in Android 4. You can choose to display profiling data as on-screen bar or line graphswith colors indicating time spent creating drawing commands blueissuing the commands orangeand waiting for the commands to complete yellow. The system updates the on-screen graphs continuously, displaying a graph for each visible Activity, including the navigation bar and notification bar. If you see operations that cross the green line, you can analyze them further using Systrace and other tools.

Wi-Fi scan-only mode is a new platform optimization that lets users keep Wi-Fi scan on without connecting to a Wi-Fi network, to improve location accuracy while conserving battery.

If your app already includes home screen widgets, you can extend them to the lock screen with minimal change. To give users an optimal experience, you can update the widget to use the full lock screen area when available and resize when needed on smaller screens.

Filterscript is a subset of Renderscript that is focused download games for android jelly bean 4.1 optimized image processing across a broad range of device chipsets. Developers can write their image processing operations in Filterscript using the standard Renderscript runtime API, but within stricter constraints that ensure wider compatibility and improved optimization across CPUs, GPUs, and DSPs.

The service receives the events and can process them as needed before they are passed to the system or other installed apps. Accessibility services can declare new capability attributes to describe what their services can do and what platform features they use.

A new MediaExtractor API lets you get the PSSH metadata for DASH media. Apps using the media DRM framework manage the network communication with a license server and handle the streaming of encrypted data from a content library.

The new hardware capabilities are already available on Nexus 7 and Nexus 4 devices, and any device manufacturer or chipset vendor can build them into their devices. To meet the needs of the next generation of media services, Android 4. Through a combination of new APIs and enhancements to existing APIs, the media DRM framework provides an integrated set of services for managing licensing and provisioning, accessing low-level codecs, and decoding encrypted media data.

You can now sample textures in your Renderscript compute scripts, and new pragmas are available to define the floating point precision required by your scripts. You can now debug your Renderscript compute scripts on xbased emulator and hardware devices. You can also define multiple root-style kernels in a single Renderscript source file. To extend the capabilities of Android even further, several new services for Android are available.

Developers who declare Up navigation in the manifest no longer need to manage navigation by callback at run time, although they can also do so if needed. Also available is a new TaskStackBuilder class that lets you quickly put together a synthetic task stack to start immediately or to use when an Activity is launched from a PendingIntent.

Platform support for AVRCP 1. A tablet owner can set up one or more restricted profiles in Settings and manage them independently. Your app can offer restrictions to let owners manage your app download games for android jelly bean 4.1 when it's running in a profile. With restricted profiles, tablet owners can quickly set up separate environments for each user, with the ability to manage finer-grained restrictions in the apps that are available in those environments.

Filterscript is ideal for hardware-accelerating simple image-processing and computation operations such as those that might be written for OpenGL ES fragment shaders. Because it places a relaxed set of constraints on hardware, your operations are optimized and accelerated on more types of device chipsets. Any app targeting API level 17 or higher can make use of Filterscript. Intrinsics are available for blends, blur, color matrix, 3x3 and 5x5 convolve, per-channel lookup table, and converting an Android YUV buffer to RGB.

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You can take full control of two or more independent displays using Presentation. A Presentation gives your app full control over the remote display window and its content and lets you manage it based on user input events such as key presses, gestures, motion events, and more. You can use all of the normal tools to create a UI and render content in the Presentation, from building an arbitrary view hierarchy to using SurfaceView or SurfaceTexture to draw directly into the window for streamed content or camera previews.

The keystore provider provides the same security benefits that the KeyChain API provides for system-wide credentials, such as binding download games for android jelly bean 4.1 to a device. Private keys in the keystore cannot be exported off the device. This reduces root attack surface and likelihood of potential security vulnerabilities.

Apps such as media players can take advantage of AVRCP 1. In addition to exposing playback controls on the remote devices connected over Bluetooth, apps can now transmit metadata such as track name, composer, and other types of media metadata.

Google Play services offers advanced location APIs that you download games for android jelly bean 4.1 use in your apps. Hardware geofencing optimizes for power efficiency by performing location computation in the device hardware, rather than in software. On devices that support hardware geofencing, Google Play services geofence APIs will be able to take advantage of this optimization to save battery while the device is moving.

In effect, each of the multiple users has his or her own Android device. Users can install and uninstall apps at any time in their own environments.

For multithreaded processing, the renderer can also now use multithreading across multiple CPU cores to perform certain tasks. Shapes such as circles and rounded rectangles are now rendered at higher quality in a more efficient manner. Optimizations for text include increased performance when using multiple fonts or complex glyph sets CJKhigher rendering quality when scaling text, and faster rendering of drop shadows.

The tool is available now in the Android SDK Tools R20 or higher. New APIs for accessibility services let you handle gestures and manage accessibility focus as the user moves through the on-screen elements and navigation buttons using accessibility gestures, accessories, and other input.

For this, the system download games for android jelly bean 4.1 help your app choose the best display to use. Alternatively, you can use the media router service, extended in Android 4. Your app can display content by default in the main Activity until a preferred Presentation display is attached, at which time it can automatically switch to Presentation content on the preferred display.

Creating a synthetic task stack is especially useful when users launch Activities from remote download games for android jelly bean 4.1, such as from Home screen widgets and notifications, because it lets the developer provide a managed, consistent experience on Back navigation. You can use a new helper class, ActivityOptionsto create and control the animation displayed when you launch your Activities. Through the helper class, you can specify custom animation resources to be used when the activity is launched, or request new zoom animations that start from any rectangle you specify on screen and that optionally include a thumbnail bitmap.

Now in Android 4. You can access notifications through new APIs that let you register a notification listener service and with permission of the user, receive notifications as they are displayed in the status bar.

MediaPlayer supports chaining audio streams together to play audio files without pauses. This is useful for apps that require seamless transitions between audio files such as music players to play albums with continuous tracks or games. The new APIs MediaRouter, MediaRouteActionProvider, and MediaRouteButton provide standard mechanisms and UI for choosing where to play media. Support is built-in for wired headsets and a2dp bluetooth headsets and speakers, and you can add your own routing options within your own app.

Your users can connect using only a direct p2p connection, which avoids using mobile bandwidth. Apps can query whether the current network is metered before beginning a large download that might otherwise be relatively expensive to the user. Through the API, you can now get a clear picture of which networks are sensitive to data usage and manage your network activity accordingly. Apps can query the system to discover what low-level media codecs are available on the device and then and use them in the ways they need.

Android Beam is a popular NFC-based technology that lets users instantly share, just by touching two NFC-enabled phones together. When the user triggers a transfer, Android Beam hands over from NFC to Bluetooth, making it really easy to manage the transfer of a file from one device to another.

Apps can make use of new Arabic and Hebrew locales and associated fonts. The platform download games for android jelly bean 4.1 supports user-installable keyboard mapssuch as for additional international keyboards and special layout types.

Now several users can share a single Android tabletwith each user having convenient access to a dedicated user space. Users can switch to their spaces with a single touch from the lock screen. On a multiuser device, Android gives each user a separate environment, including user-specific emulated SD card storage.

Users remain in control of which apps can receive notifications. At any time, they can look in Settings to see which apps have notification access and enable or disable access as needed. Notification access is disabled by default — apps can use a new Intent to take the user directly to the Settings to enable the listener service after installation.

These improvements depend on hardware support — devices that offer these low-latency audio features can advertise their support to apps through a hardware feature constant. New AudioManager APIs are provided to query the native audio sample rate and buffer size, for use on devices which claim this feature. The Dalvik runtime includes enhancements for performance and security across a wider range of architectures:. Find out more about the Jelly Bean features for users at www.

For example, a widget could display larger, richer graphics or additional functionality or options. Developers can still maintain control over maximum and minimum sizes and can update other widget options whenever needed.

Your app can enumerate the displays and check the capabilities of each, including size, density, display name, ID, support for secure video, and more.

With native RTL support, you can deliver the same great app experience to all of your users, whether their language uses a script that reads right-to-left or one that reads left-to-right. When the user switches the system language to a right-to-left script, the system now provides automatic mirroring of app UI layouts and all view widgets, in addition to bidi mirroring of text elements for both reading and character input. Your app can take advantage of RTL layout mirroring in your app with minimal effort.

They can be entirely self-contained, such as a widget that offers controls to play music, or they can let users jump straight to an Activity in your app, after unlocking along the way as needed. For developers, lock screen widgets offer a great new way to engage users. You can take advantage of this new capability by building a new app download games for android jelly bean 4.1 or by extending an existing home screen widget.

For apps that handle protected or encrypted content, the display API now reports the secure video capabilities of attached displays. Your app query a display to find out if it offers a secure video output or provides protected graphics buffers and then choose the appropriate content stream or decoding to make the content viewable.

For developers, restricted profiles offer a new way to deliver more value and control to your users. You can implement app restrictions — content or capabilities controls that are supported by your app — and advertise them to tablet owners in the profile configuration settings.

A user can enable Daydream from the Settings app and then choose the daydream to display. Daydreams combine the best capabilities of live wallpapers and home screen widgets, but they are more powerful. They let you offer the download games for android jelly bean 4.1 kind of content in a completely new context, with user interactions such as flipping through photos, playing audio or video, or jumping straight into your app with a single touch. Because daydreams can start automatically when a device is charging or docked, they also give your app a great way to support new types of user experiences, such as leanback or exhibition mode, demo or kiosk mode, and "attract mode" — all without requiring special hardware.

A new layout mode lets you manage the positioning of Views inside ViewGroups according to their optical boundsrather than their clip bounds. You can use the optical bounds layout mode to properly align widgets that use outer visual effects such as shadows and glows. Apps can now define the exit and entry animation types used on a window when the device is rotated.

On devices running Android 4. The latest addition to the StrictMode tool is a policy constraint that warns when your app exposes a file: In some cases the receiving app may not have access to the file: This new policy helps you catch and fix such cases. Improvements in the hardware-accelerated 2D renderer make common animations such as scrolling and swiping smoother and faster.

So that apps also benefit, Android 4. This lets them optimize operations on the UI thread and provides a stable timebase for synchronization. The animation framework now uses vsync timing to automatically handle synchronization across animators. For specialized uses, apps can access vsync timing through APIs exposed by a new Choreographer class.

Users also have their own homescreens, widgets, accounts, settings, files, and apps, and the system keeps these separate. All users share core system services, but the system ensures that each user's applications and data remain isolated.

Every Android release includes dozens of security enhancements to protect users. Here are some of the enhancements in Android 4.

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