Use of the Spinner control in Android Development

Use of the Spinner control in Android Development

In Android mobile app development, the following five common methods are used for the Spinner object.

Usage 1: displays the Spinner option statically as a resource

Usage 2: dynamically display the Spinner option in code mode

Usage3: Displays both images and text

Usage 4: hybrid mode

Here I am just a simple way to learn how to use 1 and 3. For other methods, refer to the following blog and write well.

Http://www.cnblogs.com/freeliver54/archive/2012/09/03/2668363.html

The preceding Declaration variables and initialization will not be repeated. Let's learn how to use it directly.

Note: In the resource value folder, store the string selection information in the drop-down box in the xml file.

<String name = "spin_prompt"> select the expenditure type </string> <string-array name = "outAccount"> <item> utilities </item> <item> rent </ item> <item> taxi fare </item> <item> meal fee </item> <item> other fees </item> </string-array>

If there is a return button, you can add it to the event of the return button as follows:

// Set the category drop-down list. By default, select the first item (the string information in the drop-down box is stored in addinaccount. xml). spInType. setSelection (0 );