Android 3.0 Application Development Cookbook by Merrifield Mew Kyle

By Merrifield Mew Kyle

The ebook is written in a cookbook variety, proposing examples within the type of recipes, permitting you to move on to your subject of curiosity, or keep on with issues all through a bankruptcy to achieve in-depth wisdom. while you are new to Android program improvement and searching out a short begin, or while you're an skilled Android developer searching for a reference advisor, then this booklet is for you. preferably, you have to comprehend a few Java and a bit approximately mark-up languages yet this is often on no account important. This publication will educate you ways to jot down wealthy Android purposes from scratch very quickly.

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Start a new Android project in Eclipse with a Build Target of level 9 or higher—here we used 10. xml file in the res/layout folder. How to do it.... 1. Edit the default TextView so that it has a height of 100dip, text size of 26sp, and a background color of #333: android:layout_height="100dip" android:textSize="26sp" android:background="#333" 50 Chapter 2 2. Add another TextView beneath this one and give it both height and width of MATCH_ PARENT (or FILL_PARENT) and a background color of #666. 3.

Append(" ... finishing"); } } There's more... Despite the effort that we have had to put into preventing Android from shutting down our components prematurely, there are times when we want to deliberately exit an activity. Despite Android's robust approach to resource management it will not wipe our application if there is no demand or if memory is readily available. Although an activity that persists in this way is unlikely to have much of a negative impact, the user will most likely not see it that way and blame our application for draining their battery.

Give it a Resolution of 640 x 1024 pixels and an Abstracted LCD density of 320 dpi: 4. Set up a second emulator with a small screen of 240 x 320 pixels and a dpi of 160. 5. Now, run the application on both emulators and observe the difference in the way they appear. 6. xml. 7. xml file in the layout-small folder so that the top TextView has a height of 30dip and a text size of 12sp. 51 Layouts 8. Open the manifest file and add the following element to the element: 9.

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