Data binding implementation of spinner controls in Android Studio

Here's how to set up a data source for a spinner control in a program by using a collection, in the following steps:

1. In the Android Studio interface, select Project, and then expand "Application", "res", "Layout", open Activity_main.xml, add a spinner control, the code is as follows:

<spinner        android:id= "@+id/eduspinner"        android:layout_width= "fill_parent"        android:layout_height= "Wrap_content" ></Spinner>

2, find the "app", "Java" under the Mainactivity.java file, define a few variables, the code is as follows:

Private list<charsequence> edulist = null; Private arrayadapter<charsequence> eduadapter = null; Private Spinner eduspinner= null;

3. After the OnCreate method of activity, add the following method:

  Locate the Spinner control  Eduspinner = (Spinner) Super.findviewbyid (r.id.eduspinner);  Eduspinner.setprompt ("Please select your education:");  Edulist = new arraylist<charsequence> ();  Edulist.add ("college");  Edulist.add ("undergraduate");  Edulist.add ("master");  Edulist.add ("other");  Eduadapter = new Arrayadapter<charsequence> (this,android. r.layout.simple_spinner_item,edulist);  Eduadapter.setdropdownviewresource (Android. R.layout.simple_spinner_dropdown_item);  Eduspinner.setadapter (Eduadapter);

4, run the program, the spinner has been bound to the corresponding data, as shown in:

The data that is bound later can be obtained from the server by WebService and then bound to the spinner control.

Data binding implementation of spinner controls in Android Studio