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Vincent Tsao

Xtify: Platform Overview - 0 views

www.xtify.com/geo-notifications-platform

mobile android platform xtify

shared by Vincent Tsao on 15 Apr 10 - Cached
  • Xtify is an ASP / Notifications Platform that delivers notifications and messages directly to your mobile users' devices and prompts users to take desired actions - whenever and wherever most appropriate, based on geo-location and geo-history.
Kiran Kuppa

apps-for-android - Sample Applications for the Android platform - Google Project Hosting - 2 views

code.google.com/...apps-for-android

code examples android development

shared by Kiran Kuppa on 11 Mar 13 - No Cached
  • Kiran Kuppa on 11 Mar 13
     
    "A collection of useful, open source applications that demonstrate basic features of the Android platform."
Kiran Kuppa

Tapping into Android's sensors - 0 views

www.ibm.com/...index.html

android article

shared by Kiran Kuppa on 17 Sep 12 - Cached
  • Kiran Kuppa on 17 Sep 12
     
    Android, a rich platform for application development, has an attractive set of user interface elements and data-management capabilities. Android also offers a healthy array of interfacing options. In this article, learn how to interact with Android's varied sensor options to monitor your environment. Sample code shows you how to record audio on an Android phone. Want to build your own baby monitor? Unlock your phone or a door with your own voice activation? Learn how to leverage the hardware capabilities of an Android-equipped device.
Kiran Kuppa

Google strengthens Android security muscle with SELinux protection | Ars Technica - 0 views

arstechnica.com/...-with-nsa-developed-protection

android security

shared by Kiran Kuppa on 25 Jul 13 - No Cached
  • Kiran Kuppa on 25 Jul 13
     
    The other big security enhancement introduced in Android 4.3 is a more robust way to store cryptographic credentials used to access sensitive information and resources. This means changes to the Android KeyChain, which stores digital certificates used to access Wi-Fi networks and virtual private networks used by large corporations and government agencies. With the keychain enhancements, the system-wide keys are bound to a hardware-based root of trust process devices that support this.The phone needs to have a secure element such as a Trusted Platform Module so that private keys can't be stolen even if the phone is rooted and the attacker has full access to the operating system. Phones that don't have this hardware capability will fall back to software protections for securing credentials.Enhancements to the Android Keystore, a similar resource that also stores credentials, allows users to create keys that can be accessed and used exclusively by a single application. Under version 4.3, "apps can create or store private keys that cannot be seen or used by other apps and can be added to the keystore without any user interaction A third enhancement is Android's ability to create secondary user profiles that implement fine-grained restrictions.
Vincent Tsao

Supporting Multiple Screens | Android Developers - 0 views

developer.android.com/...screens_support.html

android Multiple Resolution tech

shared by Vincent Tsao on 23 Mar 10 - Cached
  • The density of a screen is important because, other things being equal, a UI element (such as a button) whose height and width are defined in terms of screen pixels will appear larger on the lower density screen and smaller on the higher density screen.
  • The density-independent pixel is equivalent to one physical pixel on a 160 dpi screen, the baseline density assumed by the platform (as described later in this document). At run time, the platform transparently handles any scaling of the dip units needed, based on the actual density of the screen in use. The conversion of dip units to screen pixels is simple: pixels = dips * (density / 160). For example, on 240 dpi screen, 1 dip would equal 1.5 physical pixels. Using dip units to define your application's UI is highly recommended, as a way of ensuring proper display of your UI on different screens.
Vincent Tsao

Android Developers Blog: Final Android 3.0 Platform and Updated SDK Tools - 1 views

android-developers.blogspot.com/...d-30-platform-and-updated.html

android Honeycomb

shared by Vincent Tsao on 23 Feb 11 - No Cached
  • Vincent Tsao on 23 Feb 11
     
    Android 3.0正式版终于发布了，同志们赶紧跟进了
Vincent Tsao

Avoiding Memory Leaks | Android Developers - 0 views

developer.android.com/...avoiding-memory-leaks.html

android memory leak tech

shared by Vincent Tsao on 24 Apr 10 - No Cached
  • As part of my job, I ran into memory leaks issues in Android applications and they are most of the time due to the same mistake: keeping a long-lived reference to a Context.
  • There are two easy ways to avoid context-related memory leaks. The most obvious one is to avoid escaping the context outside of its own scope. The example above showed the case of a static reference but inner classes and their implicit reference to the outer class can be equally dangerous. The second solution is to use the Application context. This context will live as long as your application is alive and does not depend on the activities life cycle. If you plan on keeping long-lived objects that need a context, remember the application object. You can obtain it easily by calling Context.getApplicationContext() or Activity.getApplication().
  • In summary, to avoid context-related memory leaks, remember the following: Do not keep long-lived references to a context-activity (a reference to an activity should have the same life cycle as the activity itself) Try using the context-application instead of a context-activity Avoid non-static inner classes in an activity if you don't control their life cycle, use a static inner class and make a weak reference to the activity inside. The solution to this issue is to use a static inner class with a WeakReference to the outer class, as done in ViewRoot and its W inner class for instance A garbage collector is not an insurance against memory leaks
Vincent Tsao

PhoneGap - 0 views

www.phonegap.com

PhoneGap framework mobile android tech

shared by Vincent Tsao on 20 Dec 10 - Cached
  • PhoneGap is an open source development framework for building cross-platform mobile apps. Build apps in HTML and JavaScript and still take advantage of core features in iPhone/iPod touch, iPad, Google Android, Palm, Symbian and Blackberry SDKs.
Vincent Tsao

cyrilmottier/GreenDroid - GitHub - 0 views

github.com/...GreenDroid

android opensource greendroid cyrilmottier

shared by Vincent Tsao on 20 Jan 11 - No Cached
Vincent Tsao liked it
  • GreenDroid is a development library for the Android platform. It is intented to make UI developments easier and consistent through your applications
Vincent Tsao

Marco.org - Great since day one - 1 views

www.marco.org/769340032

mobile android IOS

shared by Vincent Tsao on 23 Dec 10 - No Cached
  • Apple tends to do that a lot. It’s deeply ingrained in their culture, priorities, and product development practices. In brief, their philosophy seems to be to ship only what’s great and leave out the rest. That’s why, instead of having a bad copy-and-paste implementation for the iPhone’s first two years, we just didn’t have one at all
  • Android as a platform, both in hardware and software, doesn’t reflect this. Nearly every hardware and software release has major shortcomings or rough edges. Many details and design decisions are lacking, wrong, or inexplicable. Neither Google nor the current Android device manufacturers embody the part of Apple’s culture that allows them to release a great product on day one. They have a different pattern: It’s always getting better. We’re always supposedly one or two releases from it being really great.
  • I never make technology-buying decisions based on future promises, rumors, or potential. I let other people be the bleeding-edge extremely early adopters, and I stick with what I know will work and stay out of my way. I don’t buy things that are “getting better”, because they usually don’t. Whatever caused them to be lacking in their current release will usually prevent them from being great in future releases. I buy things that are great today. They’re usually things that have been great since day one. And, more often than not, they’re Apple products.
Jac Londe

XLP Energy Harvesting Dev Board | DigiKey - 0 views

www.digikey.com/...microchip_xlp_dev_board.html

XLP energy dev board arduino wifi objoom

shared by Jac Londe on 27 Aug 11 - No Cached
  • XLP Energy Harvesting Development Board The XLP 16-bit Energy Harvesting Development Kit is a true development platform for realizing energy harvesting applications. The Microchip nanoWatt XLP PIC MCUs are ideal for these low power applications with sleep currents down to 20nA, active mode currents down to 50uA/MHz, code execution efficiency, and multiple wake-up sources. Powered only by light, the XLP kit enables rapid prototyping of low power applications such as RF sensors, temperature/environmental sensors, utility meters, remote controls, and security sensors to name just a few. For software development and programming, the kit includes the PICkit 3 programmer/debugger for use with the Microchip’s free MPLAB™ Integrated Development Environment.
  • UART to USB bridge for use in prototyping and PC communication
  • Solar Energy Harvester with EnerChip storage devices providing backup power
  • ...6 more annotations...
  • Individual disable jumpers for board components such as temperature sensors, LEDs, EEPROM, and potentiometer thereby removing unwanted standby current
  • Expansion PICtail connector with MCU controlled power supply
  • Prototyping area for adding additional sensors and circuits
  • PICkit 3 Programmer/Debugger and board level connector for application software development
  • PIC24F16KA102 eXtreme Low Power MCU with 20nA sleep currents(Can also be used with PIC24FJ64GA102)
  • Energy Aware software reports charge status as a percentage and charge state (Charging or Discharging EnerChips)
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