01、单项选择 RadioGrope RadioButton

目录结构

单选

单选xml代码

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.sky.myapplication.SingleChooseActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/tv"
        android:textSize="22dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <RadioGroup
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="38dp">

        <RadioButton
            android:id="@+id/rb1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/rb1"
            tools:layout_editor_absoluteX="0dp"
            tools:layout_editor_absoluteY="38dp" />

        <RadioButton
            android:id="@+id/rb2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/rb2"
            tools:layout_editor_absoluteX="0dp"
            tools:layout_editor_absoluteY="38dp" />

        <RadioButton
            android:id="@+id/rb3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/rb3"
            tools:layout_editor_absoluteX="0dp"
            tools:layout_editor_absoluteY="38dp" />

        <RadioButton
            android:id="@+id/rb4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/rb4"
            tools:layout_editor_absoluteX="0dp"
            tools:layout_editor_absoluteY="38dp" />
    </RadioGroup>

    <Button
        android:id="@+id/btnSubmit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btnSingleChoose" />
        
    </LinearLayout>
    

SingleChooseActivity.class

package com.example.sky.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.Toast;

public class SingleChooseActivity extends AppCompatActivity {
    //声明提交按钮 正确选项
    private Button btnSubmit;
    private RadioButton rb4;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //实例提交按钮 正确选项
        btnSubmit = findViewById(R.id.btnSubmit);
        rb4 = findViewById(R.id.rb4);
        //侦听提交按钮
        btnSubmit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //做出判断
                if(rb4.isChecked()){
                    Toast.makeText(SingleChooseActivity.this,R.string.right,Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(SingleChooseActivity.this,R.string.wrong,Toast.LENGTH_SHORT).show();
                }

            }
        });

    }
}

strings.xml

<resources>
    //两个小插件用的1个strings.xml
    
    //单选
    <string name="app_name">My Application</string>
    <string name="rb1">西游记</string>
    <string name="rb2">红楼梦</string>
    <string name="rb3">水浒传</string>
    <string name="rb4">斗破苍穹</string>
    <string name="tv">哪个不是四大名著里面的？</string>
    <string name="btnSingleChoose">提交</string>

    <string name="right">选对了</string>
    <string name="wrong">选错了</string>
    
    //多选
    <string name="tvCheck">下面哪些是四大名著里面的</string>
    <string name="cb1">西游记</string>
    <string name="cb2">斗破苍穹</string>
    <string name="cb3">红楼梦</string>
    <string name="cb4">盘龙</string>
    <string name="cb5">斗罗大陆</string>
    <string name="btnCheck">提交</string>
    
</resources>

02、多项选择代码 CheckBox

多选

activity_check_box.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.sky.myapplication.CheckBoxActivity">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/tvCheck"
        android:textSize="22dp" />

    <CheckBox
        android:id="@+id/cb1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/cb1" />

    <CheckBox
        android:id="@+id/cb2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/cb2" />

    <CheckBox
        android:id="@+id/cb3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/cb3" />

    <CheckBox
        android:id="@+id/cb4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/cb4" />

    <CheckBox
        android:id="@+id/cb5"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/cb5" />

    <Button
        android:id="@+id/btn_cb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btnCheck" />
</LinearLayout>

CheckBoxActivity.class

package com.example.sky.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;

public class CheckBoxActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {
    // 声明提交按钮 多选项
    private Button btn_cb;
    private CheckBox cb1,cb2,cb3,cb4,cb5;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_check_box);
        //实例提交按钮 多选项
        btn_cb = findViewById(R.id.btn_cb);
        cb1 = findViewById(R.id.cb1);
        cb2 = findViewById(R.id.cb2);
        cb3 = findViewById(R.id.cb3);
        cb4 = findViewById(R.id.cb4);
        cb5 = findViewById(R.id.cb5);
        //多选项侦听
        cb1.setOnCheckedChangeListener(this);
        cb2.setOnCheckedChangeListener(this);
        cb3.setOnCheckedChangeListener(this);
        cb4.setOnCheckedChangeListener(this);
        cb5.setOnCheckedChangeListener(this);

        //侦听提交按钮
        btn_cb.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //做出判断
                if( (cb1.isChecked() && cb3.isChecked() ) && !cb2.isChecked() && !cb4.isChecked() && !cb5.isChecked()){
                    Toast.makeText(CheckBoxActivity.this,R.string.right,Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(CheckBoxActivity.this,R.string.wrong,Toast.LENGTH_SHORT).show();
                };
            }
        });

    }

    //多选项check接口
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

    }