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This article mainly introduces "Android how to achieve Spinner drop-down list effect" related knowledge, editor through the actual case to show you the operation process, the operation method is simple and fast, practical, I hope that this "Android how to achieve Spinner drop-down list effect" article can help you solve the problem.

Use the array as the data source

This kind of implementation is relatively simple, and the effect picture is shown first:

Xml file code

MainActivity file code:

Package com.kiritor.ui_spinner; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.TextView; public class MainActivity extends Activity {private TextView result = null; private Spinner spinner = null; private ArrayAdapter adapter = null Private static final String [] langurage = {"machine language", "assembly", "c language", "C++ language", "java language"}; @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState); setContentView (R.layout.activity_main); result = (TextView) findViewById (R.id.result); spinner = (Spinner) findViewById (R.id.spinner) Adapter = new ArrayAdapter (this,android.R.layout.simple_spinner_item,langurage); / / set drop-down list style adapter.setDropDownViewResource (android.R.layout.simple_spinner_dropdown_item); / / add adapter to spinner to spinner.setAdapter (adapter); spinner.setVisibility (View.VISIBLE) / / sets the default display of spinner.setOnItemSelectedListener (new OnItemSelectedListener () {@ Override public void onItemSelected (AdapterView arg0, View arg1, int arg2, long arg3) {/ / TODO Auto-generated method stub result.setText ("your choice is:" (TextView) arg1) .getText ()) } @ Override public void onNothingSelected (AdapterView arg0) {/ / TODO Auto-generated method stub}});} @ Override public boolean onCreateOptionsMenu (Menu menu) {/ / Inflate the menu; this adds items to the action bar if it is present. GetMenuInflater () .inflate (R.menu.main, menu); return true;}}

2. Use xml file as the data source

Let's start with the effect picture:

Data source xml file:

Machine language assembly language c language C++ language java language Android learning

Xml file:

MainActivity

Package com.kiritor.ui_spinner; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.TextView; public class MainActivity extends Activity {private TextView result = null; private Spinner spinner = null; private ArrayAdapter adapter = null; @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState) SetContentView (R.layout.activity_main); result = (TextView) findViewById (R.id.result); spinner = (Spinner) findViewById (R.id.spinner); adapter = ArrayAdapter.createFromResource (this,R.array.langurage,android.R.layout.simple_spinner_item); / / set drop-down list style adapter.setDropDownViewResource (android.R.layout.simple_spinner_dropdown_item); / / add adapter to spinner to spinner.setAdapter (adapter) Spinner.setVisibility (View.VISIBLE); spinner.setOnItemSelectedListener (new OnItemSelectedListener () {@ Override public void onItemSelected (AdapterView arg0, View arg1, int arg2, long arg3) {/ / TODO Auto-generated method stub result.setText ("your choice is:" (TextView) arg1) .getText ()) } @ Override public void onNothingSelected (AdapterView arg0) {/ / TODO Auto-generated method stub}});} @ Override public boolean onCreateOptionsMenu (Menu menu) {/ / Inflate the menu; this adds items to the action bar if it is present. GetMenuInflater (). Inflate (R.menu.main, menu); return true;}} about "how Android achieves the Spinner drop-down list effect" ends here. Thank you for reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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