Android Spinner instance

If you can only use a mobile phone, you can come here to learn about the following Android system for reference.

 
 

  
  
// SpinnerDemo. java:
  
  
Package com. cci. SpinnerDemo;
  
  
Import android. app. Activity;
  
  
Import android. OS. Bundle;
  
  
Import android. view. View;
  
  
Import android. widget. AdapterView;
  
  
Import android. widget. AdapterView. OnItemSelectedListener;
  
  
Import android. widget. ArrayAdapter;
  
  
Import android. widget. Spinner;
  
  
Import android. widget. TextView;
  
  
Public class SpinnerDemo extends Activity {
  
  
TextView TV;
  
  
/** Called when the activity is first created .*/
  
  
@ Override
  
  
Public void onCreate (Bundle savedInstanceState ){
  
  
Super. onCreate (savedInstanceState );
  
  
SetContentView (R. layout. main );
  
  

  
  
TV = (TextView) findViewById (R. id. mytxt );
  
  

  
  
ArrayAdapter <String> adapter = new ArrayAdapter <String> (
  
  
This, android. R. layout. simple_spinner_item );
  
  
Adapter. setDropDownViewResource (
  
  
Android. R. layout. simple_spinner_dropdown_item );
  
  

  
  
// Whatever you want to write
  
  
Adapter. add ("red ");
  
  
Adapter. add ("green ");
  
  
Adapter. add ("blue ");
  
  
Spinner spinner = (Spinner) findViewById (R. id. myspinner );
  
  
Spinner. setAdapter (adapter );
  
  
Spinner. setOnItemSelectedListener (new OnItemSelectedListener (){
  
  
Public void onItemSelected (AdapterView <?> Parent,
  
  
View view, int position, long id ){
  
  
Spinner spinner = (Spinner) parent;
  
  
TV. setText (spinner. getSelectedItem (). toString ());
  
  
// Log. v ("Test", "id =" + id + "("
  
  
// + Spinner. getSelectedItem (). toString () + ")");
  
  
}
  
  
Public void onNothingSelected (AdapterView <?> Parent ){
  
  
}
  
  

  
  
});
  
  
}
  
  
}
  
  
 
  
  
<! -- Main. xml -->
  
  
<? Xml version = "1.0" encoding = "UTF-8"?>
  
  
<LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android"
  
  
Android: orientation = "vertical"
  
  
Android: layout_width = "fill_parent"
  
  
Android: layout_height = "fill_parent"
  
  
>
  
  
<TextView
  
  
Android: id = "@ + id/mytxt"
  
  
Android: layout_width = "fill_parent"
  
  
Android: layout_height = "wrap_content"
  
  
Android: text = "@ string/hello"
  
  
/>
  
  
<Spinner
  
  
Android: id = "@ + id/myspinner"
  
  
Android: layout_width = "wrap_content"
  
  
Android: layout_height = "wrap_content"
  
  
> </Spinner>
  
  
</LinearLayout>
 
 

Google intends to use new tools to solve the Android platform differentiation problem

Android Study Notes: androidmanifest. xml Parsing

Advanced Android development-Evaluation of proficient Android 2