基本微调器示例 [英] basic spinner example
本文介绍了基本微调器示例的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
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"
>
<Spinner
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/spin"
android:entries="@array/num"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/btn"
android:text="Click ME"
android:gravity="center"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/txtv"
/>
</LinearLayout>
Spin.java
package com.and.spin;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Spinner;
import android.widget.TextView;
public class spin extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final TextView tv=(TextView)findViewById(R.id.txtv);
Button b=(Button)findViewById(R.id.btn);
final Spinner s=(Spinner)findViewById(R.id.spin);
b.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
String spin=s.toString();
tv.setText(spin);
}
});
}
}
在此程序中,我试图显示从Spinner到TextView的选定选项.但是输出dsiplays android.widget.Spinner@44c0d7f8
In this program, i'm trying to display selected options from the Spinner to the TextView. But output dsiplays android.widget.Spinner@44c0d7f8
我想要输出(1,2,3,4或5)作为Spinner中选择的选项,而不是android.widget.Spinner@44c0d7f8
I want output like (1,2,3,4 or 5) as the option selected in Spinner rather than android.widget.Spinner@44c0d7f8
推荐答案
b.setOnClickListener(new OnClickListener()
{
public void onClick(View arg0)
{
String spin=s.getSelectedItem().toString();
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tv.setText(spin);
}
});
这篇关于基本微调器示例的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文