android单项列表

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1、activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical">    <Button        android:id="@+id/button1"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="单项列表选择框" /></LinearLayout>

2、MainActivity.java

包

import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;

类实现

public class MainActivity extends Activity {private Button btn1;//用来保存选择的元素IDint nSingleChoiceID = -1;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);final String[] nItems = {"item1","item2","item3", "item4", "item5", "item6"};btn1 = (Button) findViewById(R.id.button1);btn1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setIcon(R.drawable.ic_launcher);builder.setTitle("单项选择");builder.setSingleChoiceItems(nItems, 0, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stubnSingleChoiceID = arg1;//显示提示信息String strTip = "你选择的Id为" + arg1 + ",值为" + nItems[arg1];Toast toast = Toast.makeText(getApplicationContext(), strTip, Toast.LENGTH_SHORT);toast.show();}});builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stubif (nSingleChoiceID > -1) {Toast toast = Toast.makeText(getApplicationContext(), "你选择的是"+nItems[nSingleChoiceID], Toast.LENGTH_SHORT);toast.show();}}});builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stub}});builder.create().show();}});}}

3、效果图

效果图

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