setMultiChoiceItems和setSingleChoiceItems

最新推荐文章于 2024-01-17 15:09:34 发布

StevenZengFNU

最新推荐文章于 2024-01-17 15:09:34 发布

阅读量736

点赞数

CC 4.0 BY-SA版权

分类专栏： Android 文章标签： android

本文链接：https://blog.youkuaiyun.com/StevenZengFNU/article/details/65939946

Android 专栏收录该内容

3 篇文章

订阅专栏

本文介绍了一个基于Android平台的应用UI布局实现方式，并通过实例演示了如何使用AlertDialog进行单选和多选交互操作，同时展示了如何定义字符串资源和数组资源。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

Layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_margin="5dp"
    android:layout_height="match_parent">
<Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="单选框"
        android:textSize="20sp"
        android:id="@+id/ChooseOneBtn"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="多选框"
        android:textSize="20sp"
        android:id="@+id/chooseBtn"/>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/text"
        android:textSize="20sp"/>
</LinearLayout>

String.xml

<resources>
    <string name="app_name">TimePickerProj</string>
    <string-array name="sex">
        <item>男</item>
        <item>女</item>
        <item>性别未知</item>
        <item>你猜</item>
    </string-array>
    <string-array name="hobby">
        <item>编程</item>
        <item>LOL</item>
        <item>旅游</item>
        <item>篮球</item>
    </string-array>
</resources>

MainActivity

import android.annotation.TargetApi;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.content.DialogInterface;
import android.icu.util.Calendar;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    Button button,button1,button2;
    TextView textView;
    Person person;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.linear);
        initView();
        initListener();
    }

    private void initListener() {

        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final String[] sex=getResources().getStringArray(R.array.sex);
                AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
                builder.setTitle("性别选择");
                builder.setIcon(android.R.drawable.btn_star);
                builder.setSingleChoiceItems(R.array.sex, getPersonSex(), new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                        person.setSex(sex[which]);
                        Toast.makeText(MainActivity.this,"您选择了："+sex[which],Toast.LENGTH_SHORT).show();
                    }
                });
                builder.show();
            }
        });
        button2.setOnClickListener(new View.OnClickListener() {
            final String[] hobby=getResources().getStringArray(R.array.hobby);
            final boolean[] checkedItems=new boolean[hobby.length];
            @Override
            public void onClick(View v) {
                AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
                builder.setTitle("选择爱好");
                builder.setIcon(android.R.drawable.btn_star);
                builder.setMultiChoiceItems(R.array.hobby,checkedItems, new DialogInterface.OnMultiChoiceClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                        checkedItems[which]=isChecked;
                    }
                });
                builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        StringBuilder sb=new StringBuilder();
                        for(int i=0;i<hobby.length;i++){
                            if(checkedItems[i]){
                                sb.append(hobby[i]);
                                sb.append("\n");
                            }
                        }
                        person.setHobby(sb.toString());
                        textView.setText("爱好:\n"+person.getHobby());
//                        Toast.makeText(MainActivity.this,person.getHobby(),Toast.LENGTH_SHORT).show();

                    }
                });
            builder.show();
            }

        });
    }

    private void initView() {
        textView=(TextView)findViewById(R.id.text);
        button1= (Button) findViewById(R.id.ChooseOneBtn);
        button2= (Button) findViewById(R.id.chooseBtn);
        person=new Person();
    }


    public int getPersonSex() {
       if(person.getSex()==null) {
           return -1;
       }else if(person.getSex().equals("男")){
            return 0;
        }else if(person.getSex().equals("女")){
           return 1;
       }else if(person.getSex().equals("性别未知")){
           return 2;
       }else {
           return 3;
       }
    }
}