Android-Spinner下拉列表Demo
代码
package com.lxt008; import com.lxt008.R; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.TextView; public class Activity01 extends Activity { private static final String[] m_Countries = { "O型", "A型", "B型", "AB型", "其他" }; private TextView m_TextView; private Spinner m_Spinner; private ArrayAdapter<String> adapter; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); m_TextView = (TextView) findViewById(R.id.TextView1); m_Spinner = (Spinner) findViewById(R.id.Spinner1); //将可选内容与ArrayAdapter连接 adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, m_Countries); //设置下拉列表的风格 adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); //将adapter添加到m_Spinner中 m_Spinner.setAdapter(adapter); //添加Spinner事件监听 m_Spinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { m_TextView.setText("你的血型是:" + m_Countries[arg2]); //设置显示当前选择的项 arg0.setVisibility(View.VISIBLE); } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } }); } }
布局文件
<?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/TextView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <Spinner android:id="@+id/Spinner1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" /> </LinearLayout>
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