Question

如何拿到Spinner的当前值，并实时传递至TextView中显示

Answer 1

package com.zhanggeng.spinnertest;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Spinner;
import android.widget.TextView;

public class MainActivity extends Activity {

private Spinner sp;
private TextView tv;
private String str;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

sp = (Spinner) findViewById(R.id.spinner);
tv = (TextView) findViewById(R.id.txt01);
str = (String) sp.getSelectedItem();
sp.setOnItemSelectedListener(new OnItemSelectedListener() {

@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {

//拿到被选择项的值
str = (String) sp.getSelectedItem();
//把该值传给 TextView
tv.setText(str);
}

@Override
public void onNoth