界面上只有一个textview和一个spinner，实现下拉列表框。
spinner.xml：
< xml version="1.0" encoding="utf-8" >< xml version="1.0" encoding="utf-8" >
SpinnerTest.java：
package com.example.wenandroid;
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 SpinnerTest extends Activity {
private static final String m[]={"A型","B型","O型","AB型","其他"};
private TextView textview;
private Spinner spinner;
private ArrayAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.spinner);
textview=(TextView)findViewById(R.id.textView);
spinner=(Spinner)findViewById(R.id.spinner);
adapter=new ArrayAdapter(this, android.R.layout.simple_spinner_item, m);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener()
{
@Override
public void onItemSelected(AdapterView< > arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
textview.setText("您的血型是："+m[arg2]);
}
@Override
public void onNothingSelected(AdapterView< > arg0) {
// TODO Auto-generated method stub
}
});
}
}
package com.example.wenandroid;
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 SpinnerTest extends Activity {
private static final String m[]={"A型","B型","O型","AB型","其他"};
private TextView textview;
private Spinner spinner;
private ArrayAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.spinner);
textview=(TextView)findViewById(R.id.textView);
spinner=(Spinner)findViewById(R.id.spinner);
adapter=new ArrayAdapter(this, android.R.layout.simple_spinner_item, m);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener()
{
@Override
public void onItemSelected(AdapterView< > arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
textview.setText("您的血型是："+m[arg2]);
}
@Override
public void onNothingSelected(AdapterView< > arg0) {
// TODO Auto-generated method stub
}
});
}
}
运行结果如下：
