22:51
YWPMGFA
This is a typical configuration for a device with multiple external
storage devices, where the primary device is backed by internal storage
on the device, and where the secondary device is a physical SD card.
The raw physical device must first be mounted under
/mnt/media_rw where only the system and FUSE daemon can
access it. vold will then manage the fuse_sdcard1
service when media is inserted/removed.
fstab.hardware
[physical device node] auto...
22:47
YWPMGFA
Storage
No comments
This is a typical configuration for a device with single external storage
device which is backed by internal storage on the device.
init.hardware.rc
on init
mkdir /mnt/shell/emulated 0700 shell shell
mkdir /storage/emulated 0555 root root
export EXTERNAL_STORAGE /storage/emulated/legacy
export EMULATED_STORAGE_SOURCE /mnt/shell/emulated
export EMULATED_STORAGE_TARGET /storage/emulated
on...
- 22:45
- YWPMGFA
- Storage
- No comments
Example of external storage configurations as of Android 4.4
for typical devices. Only the relevant portions of the configuration
files are included.
This is a typical configuration for a device with single external storage
device which is a physical SD card.
The raw physical device must first be mounted under
/mnt/media_rw where only the system and FUSE daemon can access
it. vold will then manage the fuse_sdcard0 service
when media is...
External storage is managed by a combination of the vold init
service and MountService system servic. Mounting of physical
external storage volumes is handled by vold, which performs
staging operations to prepare the media before exposing it to apps.
For Android 4.2.2 and earlier, the device-specific vold.fstab
configuration file defines mappings from sysfs devices to filesystem mount
points, and each line follows this format:
dev_mount <label>...
- 22:28
- YWPMGFA
- Storage
- No comments
Starting in Android 4.2, devices can support multiple users, and external
storage must meet the following constraints:
Each user must have their own isolated primary external storage, and
must not have access to the primary external storage of other users.
The /sdcard path must resolve to the correct user-specific
primary external storage based on the user a process is running as.
Storage for large OBB files in the Android/obb directory
may be...
- 22:27
- YWPMGFA
- Storage
- No comments
Starting in Android 4.4, multiple external storage devices are surfaced
to developers through Context.getExternalFilesDirs(),
Context.getExternalCacheDirs(), and
Context.getObbDirs().
External storage devices surfaced through these APIs must be a
semi-permanent part of the device (such as an SD card slot in a battery
compartment). Developers expect data stored in these locations to be
available over long periods of time. For this reason, transient...
- 22:25
- YWPMGFA
- Storage
- No comments
Android supports devices with external storage, which is defined to be a
case-insensitive filesystem with immutable POSIX permission classes and
modes. External storage can be provided by physical media (such as an SD
card), or by exposing a portion of internal storage through an emulation
layer. Devices may contain multiple instances of external storage.
Access to external storage is protected by various Android
permissions. Starting in Android...
- 22:13
- YWPMGFA
- DRM
- No comments
The plug-in developer should ensure the plug-in is located in the DRM
framework plug-in discovery directory. See implementation instructions for details. Read more....
- 22:11
- YWPMGFA
- DRM
- No comments
As shown in the figure, the DRM framework uses a plug-in architecture
to support various DRM schemes. The DRM manager service runs in an independent
process to ensure isolated execution of DRM plug-ins. Each API call from
DrmManagerClient to DrmManagerService goes across process boundaries by using
the...
- 21:59
- YWPMGFA
- DRM
- No comments
Availability of rich digital content is important to users on mobile devices. To
make their content widely available, Android developers and digital content
publishers need a consistent DRM implementation supported across the Android
ecosystem. In order to make that digital content available on...
- 21:53
- YWPMGFA
- DRM
- 4 comments
The Android platform provides an extensible DRM framework that lets
applications manage rights-protected content according to the license
constraints associated with the content. The DRM framework supports many DRM
schemes; which DRM schemes a device supports is up to the device manufacturer.
The...
- 21:48
- YWPMGFA
- Architecture
- 2 comments
The DRM framework is designed to be implementation agnostic and
abstracts the details of the specific DRM scheme implementation in a
scheme-specific DRM plug-in. The DRM framework includes simple APIs to handle
complex DRM operations, register users and devices to online DRM services,
extract constraint...
- 21:18
- YWPMGFA
- Architecture
- 4 comments
Android's camera HAL connects the higher level
camera framework APIs in android.hardware to your underlying camera driver and hardware.
The figure and list describe the components involved and where to find the source for each:
Application framework
At the application framework level is...
- 21:04
- YWPMGFA
- Architecture
- 2 comments
Android provides a default Bluetooth stack, BlueDroid, that is divided
into two layers: The Bluetooth Embedded System (BTE), which implements
the core
Bluetooth functionality and the Bluetooth Application Layer (BTA), which
communicates
with Android framework applications. A Bluetooth system...
- 20:50
- YWPMGFA
- Architecture
- 7 comments
Application framework
At the application framework level is the app code, which utilizes the
android.media
APIs to interact with the audio hardware. Internally, this code calls corresponding JNI glue
classes to access the native code that interacts with the audio hardware.
...
- 20:06
- YWPMGFA
- Architecture
- 1 comment
To start an Android user you may know how the fundamental function is such as
making a call, sending a text message, changing the system settings,
install and uninstall apps or setup and delete etc. Android users know these things but
not enough for an android application developer. So, what...
- 13:43
- YWPMGFA
- Start
- No comments
To test your Android applications you will need a virtual Android
device. So before we start writing our code, let us create an Android
virtual device. Launch Android AVD Manager using Eclipse menu options Window > AVD Manager> which will launch Android AVD Manag...
- 13:42
- YWPMGFA
- Start
- No comments
This step will help you in setting Android Development Tool plugin for
Eclipse. Let's start with launching Eclipse and then, choose Help > Software Updates > Install New Software....
- 13:40
- YWPMGFA
- Start
- No comments
To install Eclipse IDE (Integrated Development Environment), download the latest Eclipse binaries from http://www.eclipse.org/downloa...
- 13:37
- YWPMGFA
- Start
- No comments
Download the latest version of Android SDK from Android official website : Android Software Development Kit (SDK) Downloads.
http://developer.android.com/sdk/index.html...
- 13:23
- YWPMGFA
- Start
- No comments
JDK setup step 01:
Go to click here to download JDK
http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html
JDK setup step 02:
Select here your essential JDK and download.
JDK setup step 03:
After completing download the installer file jdk-7u25-windows-i586.
Then...
- 12:41
- YWPMGFA
- Start
- No comments
JDK Alpha and Beta (1995): Sun announced Java in September 23, 1995.
JDK 1.0 (January 23, 1996): Originally called Oak (named after the oak tree outside James Gosling's office). Renamed to Java 1 in JDK 1.0.2.
JDK 1.1 (February 19, 1997): Introduced AWT event model, inner class, JavaBean, JDBC, and RMI.
J2SE 1.2 (codename Playground)
(December 8, 1998): Re-branded as "Java 2" and renamed JDK to J2SE
(Java 2 Standard Edition). Also released J2EE...
- 12:40
- YWPMGFA
- Start
- No comments
JRE (Java Runtime) is needed for running Java programs. JDK
(Java Development Kit), which includes JRE plus the development tools
(such as compiler and debugger), is need for writing as well as running Java programs. Since you are supposed to write Java Programs, you should install JDK, which includes JR...
- 12:40
- YWPMGFA
- Start
- No comments
JRE (Java Runtime) is needed for running Java programs. JDK
(Java Development Kit), which includes JRE plus the development tools
(such as compiler and debugger), is need for writing as well as running Java programs. Since you are supposed to write Java Programs, you should install JDK, which includes JR...
- 12:32
- YWPMGFA
- Start
- No comments
Start your Android application development on either of the following operating systems:
Microsoft Windows XP or later version.
Mac OS X 10.5.8 or later version with Intel chip.
Linux including GNU C Library 2.7 or later.
Required tools to develop Android applications are completely free. Just download from the internet the software
you will need to set up before you start your Android Apps Development.
JDK (Java Development Kit)
Android...
- 12:12
- YWPMGFA
- Start
- No comments
Applications ("apps"), that extend the functionality
of devices, are written primarily in the Java programming language
(without the usual "write once, run anywhere" claim of the Java
platform) using the Android software development kit (SDK). Once developed, Android applications can be packaged easily and sold out either through a store such as Google Play or the Amazon Appstore. Android powers hundreds of millions of mobile devices in more...
- 12:04
- YWPMGFA
- Start
- No comments
FeatureDescription
Beautiful UIAndroid OS basic screen provides a beautiful and intuitive user interface.
ConnectivityGSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth, Wi-Fi, LTE, NFC and WiMAX.
StorageSQLite, a lightweight relational database, is used for data storage purposes.
Media supportH.263, H.264, MPEG-4 SP, AMR, AMR-WB, AAC, HE-AAC, AAC 5.1, MP3, MIDI, Ogg Vorbis, WAV, JPEG, PNG, GIF, and BMP
MessagingSMS and MMS
Web browserBased on the open-source...
- 12:02
- YWPMGFA
- Start
- No comments
Jelly Bean 4.3
An even sweeter Jelly Bean
Restricted profiles for tablets
You can now limit access to apps and...
- 11:53
- YWPMGFA
- Start
- No comments
KitKat 4.4
Smart, simple, and truly yours
Beautiful & Immersive
A more polished design, improved performance, and new features.
Just say “Ok Google”
...
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