17. android dialog —— 单选列表对话框

设置单选列表只需AlertDialog.Builder里面的setSingleChoiceItems 来设置即可

实现步骤如下：

第一步：用来显示列表内容的

res/values/array.xml

<?xml version="1.0" encoding="utf-8"?> <resources> <string-array name="hobby"> <item>篮球</item> <item>足球</item> <item>排球</item> </string-array> </resources>

第二步：还是定义一个输入框和一个按钮

res/layout/single_choice_dialog_layout.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="wrap_content"> <EditText android:id="@+id/editText" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="这是一个单选列表对话框" /> <Button android:id="@+id/button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="显示单选列表对话框" /> </LinearLayout>

第三步：

产生一个单选列表对话框，首先需要new 一个AlertDialog.Builder作为对话框内容的载体，然后通过setSingleChoiceItems将

builder与array.xml中的数据关联，需要通过DialogInterface.OnClickListener对列表单选单击事件进行处理，

为了保存单选列表项中的选中数据，需要单独写一个类，且类中需要加一个选中了哪一个列表项的属性which,

代码如下

src/com/dialog/activity/SingChoiceDialogActivity.java

package com.dialog.activity; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.app.AlertDialog.Builder; import android.content.DialogInterface; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; public class SingChoiceDialogActivity extends Activity { private final int SING_CHOICE_DIALOG = 1; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.single_choice_dialog_layout); Button button = (Button) findViewById(R.id.button); View.OnClickListener listener = new View.OnClickListener() { @Override public void onClick(View view) { showDialog(SING_CHOICE_DIALOG); } }; button.setOnClickListener(listener); } @Override protected Dialog onCreateDialog(int id) { Dialog dialog = null; switch(id) { case SING_CHOICE_DIALOG: Builder builder = new AlertDialog.Builder(this); builder.setIcon(R.drawable.basketball); builder.setTitle("体育爱好"); final ChoiceOnClickListener choiceListener = new ChoiceOnClickListener(); builder.setSingleChoiceItems(R.array.hobby, 0, choiceListener); DialogInterface.OnClickListener btnListener = new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int which) { EditText editText = (EditText) findViewById(R.id.editText); int choiceWhich = choiceListener.getWhich(); String hobbyStr = getResources().getStringArray(R.array.hobby)[choiceWhich]; editText.setText("你选择了 " + hobbyStr); } }; builder.setPositiveButton("确定", btnListener); dialog = builder.create(); break; } return dialog; } private class ChoiceOnClickListener implements DialogInterface.OnClickListener { private int which = 0; @Override public void onClick(DialogInterface dialogInterface, int which) { this.which = which; } public int getWhich() { return which; } } }

效果图：

源码下载地址：http://download.csdn.net/source/3221459

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