90 CHAPTER 3: An Introduction to the Android Application Development Platform
Note If you save out the file with GIMP configured in this fashion, what you see in the primary display area
will be saved into the new target file that you specify, which we will be doing after we scale this graphic
image to match the launcher icon size “rules” that I outlined in Table 3-2 earlier in this chapter. Once we do
this scaling, you will be ready to save out your new app launch icons.
Figure 3-14. A floating selection layer over a Transparency layer; deselecting the original layer visibility
- Now that we have the launcher icon image in the transparent format we’ll
need in order to “composite” it (that is, to blend it seamlessly) with any
Android desktop out there, we will use the Image menu and its Scale Image
menu option, shown in Figure 3-15, to turn this 200 by 200 pixel source
image into the Android-specified (required) target icon image sizes. If you
remember from Table 3-2, the launcher icon sizes include 144, 96, 72, 48,
and 36 pixels and you will need to use these icon sizes in your alternate
drawable resources folders that Eclipse ADT created for you earlier in the
chapter.