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Unlocking Android PDF Print E-mail

Unlocking Android

Product Details

  • Paperback: 416 pages
  • Publisher: Manning Publications (May 28, 2009)
  • Language: English
  • ISBN-10: 1933988673
  • ISBN-13: 978-1933988672
  • Product Dimensions: 9.1 x 7.3 x 0.9 inches
  • Shipping Weight: 1.6 pounds (View shipping rates and policies)
  • Amazon.com Sales Rank: #150,260 in Books (See Bestsellers in Books)
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Dalvik JIT PDF Print E-mail

[This post is by Dan Bornstein, virtual-machine wrangler. — Tim Bray]

 

As the tech lead for the Dalvik team within the Android project, I spend my time working on the virtual machine (VM) and core class libraries that sit beneath the Android application framework. This layer is mostly invisible to end users, but done right, it helps make Android devices run smoothly and improves developer productivity.

The 2.2 release is particularly pleasing to me, as it is the first release since before 1.0 in which we have been able to deliver significantly new VM technology. And unlike much of what my team and I do, it is something that can be experienced directly by end users.

“Dalvik” isn’t exactly a household word (at least in my country), and most people wouldn’t know a virtual machine if it hit them in the face, but when you tell them you were able to make their existing device work better — run faster, use less battery — they will actually take notice!

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Android Wireless Application Development (Developer's Library) PDF Print E-mail

Android Wireless Application Development (Developer's Library)

 

Product Details

  • Paperback: 525 pages
  • Publisher: Addison-Wesley Professional; 1 edition (September 28, 2009)
  • Language: English
  • ISBN-10: 0321627091
  • ISBN-13: 978-0321627094
  • Shipping Information: View shipping rates and policies
  • Amazon.com Sales Rank: #1,294,433 in Books (See Bestsellers in Books)
     
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Debugging Android application with GDB PDF Print E-mail

Step by step:

 

- On your PC, open a terminal:

+ adb shell
+ gdbserver :1024 /data/your_application

- On your PC, open a new terminal:

+ adb forward tcp:1024 tcp:1024
+ arm-eabi-gdb
+ shared
+ target remote :1024

 

That's all!

 
How to disable 3G on GPhone PDF Print E-mail

Today my friends asked me to disable 3G on his GPhone. He does not want to pay for a huge bill every month. Because some applications can access to internet automatically. I made a search on Google and found some answer “let’s use flight mode”, oh he only want to disable 3G, not phone network. Go to Settings/Wireless controls/Mobile networks and check to “Use only 2G networks”, this does not turn of your internet bill totally, we still see the icon E (edge) on the top right of the phone. I’m lazy to register a nick to reply on the forum, so I make a post here for people who has the same question.

I suggested him to change the parameters of 3G network, so applications cannot made a connection. Go to “Settings/Wireless controls/Mobile networks/Access Point Names/”. In my case (I’m using Orange network) there are 2 APNs here: “Orange MMS” and “Orange World”. Choose “Orange World” and rename some values of parameters (add a suffix), don’t delete them, because you may need to use 3G network at any time. “Click” on “Port”, change “8080” to “8080.myname”, click on “Server”, change the value by adding “.myname”. Ok, now, let’s see on the top right of your phone, can you see the icon 3G? I think that this way should work with all kind of phone, not limited to GPhone.
 

 
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