Code Downloads for "Android Wireless Application Development Volume I: Android Essentials" Available Here

We've added the source code downloads for the book, Android Wireless Application Development Volume I: Android Essentials, to the downloads page.

Download it now to use with your copy of the book or ebook!

Honeycomb Preview Now Available

Earlier today, I was just telling someone how we lesser mortals almost never get SDKs much in advance of hardware anymore. Well, we just got one: the Honeycomb SDK preview.

And, besides the preview, the SDK tools and plugins have been updated. Sounds like good stuff. Now to go digest it all for an afternoon snack.

Even if you can't use the new SDK, don't forget to update your tools.

After you've digested it, let us know your favorite new features!

Reader Feedback: Manifest Permissions Editor

[UPDATE: 13 Feb, 2011: This problem now longer exists in ADT 9.0.0 (the version right after 0.9.9).]

The Android Manifest file editor within Eclipse provides a number of useful editing tabs to wrangle the complexities of this file. One such tab is the Permissions tab. Use the Permissions tab to manage the permissions that your application uses and grants to others.

If you've been working with Android for a while, then you may be familiar with the permissions listed in the drop-down when you register a new permission using the uses-permission tag. We refer to this feature in both our books; specifically in Sam's Teach Yourself Android Application Development in 24 Hours, Hour 5, "Configuring the Android Manifest File."

Unfortunately, a recent update to the Android Development Tools plugin removed this drop-down. We're not sure if it's a bug or not yet, but the drop-down disappeared in the software update between ADT 0.9.8 or ADT 0.9.9.

What used to look like:

Permissions tab from ADT 0.9.7 showing the drop-down list of values

Now looks like:

Permissions tab from ADT 0.9.9, with the corresponding Browse... dialog

When you press the Browse... button, the dialog comes up.

The field provided still works for typing in permissions values by hand, instead of selecting them from a list. The alternate method, editing the XML file directly from the last tab, hasn't changed at all.

So where is one to get these values to type in yourself? On page 90 and 91 of the SAMS book, we've listed a number of the most common permission values. However, the best place to get the appropriate values for your applications is from the Android SDK documentation. Permissions are defined in the documentation for the android.Manifest.permission class. Also conveniently listed with these values is a short description of what they enable the application to do. Before including a permission within your application, always check the documentation to determine if that is the most appropriate one to use.

Android SDK API Level 6!

Congratulations to the Android SDK for leveling once again! (I can't help but think of gaming when the API Level is mentioned.) We're now at Level 6, which corresponds to Android 2.0.1, Release 1.

The SDK Tools have been updated, as well, to Release 4, which now requires the updated Eclipse plug-in 0.9.5.

Many handsets still have Android 1.6 and, if rumors are to be believed, will remain so. Thus, Android 1.6, Release 2, is now available to resolve some platform issues. It also requires SDK Tools, Release 4. Curiously, though, it has not "leveled up." Will this be an issue? How will applications and developers know if their Android 1.6 has defects found in Release 1 or not?

Get it all* now while it's hot! :)

*If I'm counting correctly, that's four new things:

• Android 2.0.1, Release 1, SDK
• Android 1.6, Release 2, SDK
• SDK Tools, Release 4
• Eclipse ADT Plug-in 0.9.5

Project Pitfalls: 10 Business Risks of Android Development

Android is an exciting new platform to develop for, but there are a number of risks associated with Android projects which should not be overlooked. Here’s a short list of what we see as the project pitfalls of Android development at this time. Read more...

[Note: We're blogging over at Network World all this month. Head on over to register to win a free copy of our book!]

Android Development Tip: Managing AVDs with the Eclipse Android Development Tools Plug-In

I've updated my Eclipse development environment a number of times in the past few weeks, what with the Android 1.5 preview, then the release version. I checked for updates this week and noticed yet another version of the ADT Eclipse plugin was available. One interesting new feature added in the latest version is an Android Virtual Device (AVD) manager, accessible from within Eclipse.

All emulator instances using the Android 1.5 SDK require an AVD configuration. Sure, you can use the android command line interface to create and manage AVDs, but if you just want to create a simple AVD quickly, you can now use the little wizard provided with the ADT plugin. The AVD manager button is added to your Eclipse toolbar. It looks like a little black cell phone.

Simply click it and the AVD manager will launch, listing all AVDs on your system. You can Add and Delete AVDs, as well as Refresh the AVD listing.


When creating a new AVD, you can set the following information:

• The AVD friendly name
• The Target Android system
• The Skin
• Whether or not to create an SD Card Image
• 
  You cannot create custom hardware profiles. That, you still need to use the android command line tool for.

Android 1.5: Going Live Within The Next Few Weeks

The much-awaited Android 1.5 SDK update is coming soon to a development environment near you. This update is based on the Cupcake branch of the Android source project and features substantial improvements and additions to the Android APIs, as well as developer tool suite updates and some much-needed UI polish and performance improvements to the overall Android user experience.

You can find a short list of highlights coming in Android 1.5 as part of the Android Developer SDK 1.5 preview on the Android Developer website as well as download the pre-release ("preview") version of Android SDK 1.5 and give it a spin.

You may also find the Cupcake branch roadmap useful.

The SDK 1.5 is expected to be released within the next few weeks. An over-the-air update will likely be sent to Android phones in the field soon thereafter.

What are you looking forward to in this release? We're looking forward to being able to create home screen widgets.