How to Use Android Spinner

In today's mobile phone field, smartphones are the most popular. So how can we choose an excellent mobile phone system to meet our needs? Here, you can take a look at the Android system as a reference for your convenience. The content introduced today is about some basic concepts of Android Spinner.

● Set the Adapter and call the setAdapter () method.

● Append the Item selection time, call the setOnItemSelectedListener () method, and pass the AdapterView. OnItemSelectedListener instance as a parameter.

Android Spinner routine source code (Java)

 
 

  
  
ArrayAdapter< String> adapter = new ArrayAdapter< String>(  
  
  
this,  
  
  
android.R.layout.simple_spinner_item);  
  
  
adapter.setDropDownViewResource(  
  
  
android.R.layout.simple_spinner_dropdown_item);  
  
  
adapter.add("red");  
  
  
adapter.add("green");  
  
  
adapter.add("blue");  
  
  
Spinner spinner = (Spinner) findViewById(id.spinner);  
  
  
spinner.setAdapter(adapter);   
  
  
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {  
  
  
@Override  
  
  
public void onItemSelected(  
  
  
AdapterView< ?> parent,  
  
  
View view,  
  
  
int position,  
  
  
long id) {  
  
  
Spinner spinner = (Spinner) parent;  
  
  
Log.v("Test", "id = " + id + "("  
  
  
+ spinner.getSelectedItem().toString() + ")");  
  
  
}  
  
  
@Override  
  
  
public void onNothingSelected(AdapterView< ?> parent) {  
  
  
}  
  
  
}); 
 
 

Resource)

 
 

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

The source code of Android Spinner is introduced here.