Remove Selected Spinner Item In Android

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http://stackoverflow.com – I have spinner in my Activity which is set the item from JSON data and when i select any item from spinner and set into the spinner , and i have done all this things properly.But when i want to remove selected item from spinner i got exception " E/AndroidRuntime(1022): java.lang.UnsupportedOperationException" and "E/AndroidRuntime(1022):atandroid.widget.ArrayAdapter.remove(ArrayAdapter.java:212)" at the code line of "E/AndroidRuntime(1022):at com.spinnerdemo.SpinDemo$1.onItemSelected(SpinDemo.java:102) Here is my code.Please can someone help me. Thanks in advanced. public class SpinDemo (HowTos)