18. android dialog —— 多选列表对话框

和单选列表对话框相似，这里需要通过setMultiChoiceItems将array.xml中的数据添加进去。

当单击列表项时会产生Click事件，这里用到的监听器是DialogInterface.OnMultiChoiceClickListener，具体实现如下：

 第一步：

添加res/values/array.xml的数据

<?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：一个输入框和一个按钮

res/layout/muti_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="这是一个多选列表对话框" /> <Button android:id="@+id/button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="显示多选列表对话框" /> </LinearLayout>

 

第三步：

src/com/dialog/activity/MutiChoiceDialogActivity.java

package com.dialog.activity; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MutiChoiceDialogActivity extends Activity { private final int MUTI_CHOICE_DIALOG = 1; boolean[] selected = new boolean[]{false,false,false}; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.muti_choice_dialog_layout); Button button = (Button) findViewById(R.id.button); View.OnClickListener listener = new View.OnClickListener() { @Override public void onClick(View view) { showDialog(MUTI_CHOICE_DIALOG); } }; button.setOnClickListener(listener); } @Override protected Dialog onCreateDialog(int id) { Dialog dialog = null; switch(id) { case MUTI_CHOICE_DIALOG: Builder builder = new AlertDialog.Builder(this); builder.setTitle("多选列表对话框"); builder.setIcon(R.drawable.basketball); DialogInterface.OnMultiChoiceClickListener mutiListener = new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialogInterface, int which, boolean isChecked) { selected[which] = isChecked; } }; builder.setMultiChoiceItems(R.array.hobby, selected, mutiListener); DialogInterface.OnClickListener btnListener = new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int which) { String selectedStr = ""; for(int i=0; i<selected.length; i++) { if(selected[i] == true) { selectedStr = selectedStr + " " + getResources().getStringArray(R.array.hobby)[i]; } } EditText editText = (EditText) findViewById(R.id.editText); editText.setText(selectedStr); } }; builder.setPositiveButton("确定", btnListener); dialog = builder.create(); break; } return dialog; } }

 

效果图：

 

源码下载地址：http://download.youkuaiyun.com/source/3222814