Download e-book for kindle: Android User Interface Development: Beginner's Guide by Jason Morris

By Jason Morris

ISBN-10: 1849514488

ISBN-13: 9781849514484

This can be a step by step advisor that goals to provide even a amateur Android developer a superb grab of user-interface layout, whereas operating via examples, diagrams, and screenshots to show off many of the widgets and instruments that the platform makes to be had.

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Extra resources for Android User Interface Development: Beginner's Guide

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This way we can redefine the sizes for different types of screens. There's nothing more frustrating for a user than only being able to see a partial item because it's been sized bigger than their screen. Create a new resource file to contain the dimensions. xml. Copy the following code into the new XML file: [ 43 ] Chapter 2 4. Center the text in the TextView widget by setting its gravity: android:gravity="center|center_vertical" 5. We assign the textSize of the TextView to our standard item_text_size: android:textSize="@dimen/item_text_size" 6.

There's nothing more frustrating for a user than only being able to see a partial item because it's been sized bigger than their screen. Create a new resource file to contain the dimensions. xml. Copy the following code into the new XML file: [ 43 ] Chapter 2 4. Center the text in the TextView widget by setting its gravity: android:gravity="center|center_vertical" 5. We assign the textSize of the TextView to our standard item_text_size: android:textSize="@dimen/item_text_size" 6. The default color of the text of TextView is a bit gray, we want it to be white: android:textColor="#ffffff" 7.

Xml file in your editor or IDE. 2. , and Maybe? Button elements from the layout resource. 3. java file in an editor or IDE. 4. We will need a new class field to hold the dynamically-created Button objects (for reference): private Button[] buttons; 5. In order to keep things neat, create a new private method to put the questions on the screen: initQuestionScreen: private void initQuestionScreen() { 6. In this method, we assume that the layout XML file has already been loaded into the Activity screen (that is, it will be invoked after we setContentView in onCreate).

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Android User Interface Development: Beginner's Guide by Jason Morris


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