在 Android 中使用多个 Radio Group 值

Question

我有两个单选组，每个组包含两个单选按钮。我想等到每个组中的一个按钮被选中，然后显示一个 Toast。 （例如，如果选中了第 1 组中的单选按钮 1 和第 2 组中的单选按钮 3，则显示 Toast 消息。我没有收到任何错误消息，但没有显示 Toast：

    <RadioGroup
        android:id="@+id/rg1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="92dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.508"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <RadioButton
            android:id="@+id/rb1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onClick"
            android:text="@string/rb1" />

        <RadioButton
            android:id="@+id/rb2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onClick"
            android:text="@string/rb2" />
    </RadioGroup>


    <RadioGroup
        android:id="@+id/rg2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="228dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <RadioButton
            android:id="@+id/rb3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onClick"
            android:text="@string/rb3" />

        <RadioButton
            android:id="@+id/rb4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onClick"
            android:text="@string/rb4" />
    </RadioGroup>
</android.support.constraint.ConstraintLayout>

JAVA 代码：

    package com.example.rgapp;

    import android.app.Activity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;
    import android.widget.Toast;

    public class MainActivity extends Activity {



        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

        }


        public void onClick(View view) {

            boolean checked = ((RadioButton) view).isChecked();


            if (view.getId() == (R.id.rb1) & (view.getId() == (R.id.rb3)))
                Toast.makeText(getApplicationContext(), "1 and 3 selected",
                        Toast.LENGTH_SHORT).show();

        }
    }

Answer 1

如果同时选择了无线电组，请使用此代码来实现您的功能，然后您将获得结果

public class MainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener {

        RadioGroup rg1,rg2;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            rg1 =(RadioGroup)findViewById(R.id.rg1);
            rg2 =(RadioGroup)findViewById(R.id.rg2);

            rg1.setOnCheckedChangeListener(this);
            rg2.setOnCheckedChangeListener(this);
        }
        int radioId1 = 0,radioId2 = 0;
        @Override
        public void onCheckedChanged(RadioGroup radioGroup, int i) {

            if (radioGroup == rg1){

                radioId1 = i;
            }
            if (radioGroup == rg2){
                radioId2 = i;
            }

            if (radioId1 != 0 && radioId2 != 0){
                RadioButton radioButton1 = (RadioButton) findViewById(radioId1);
                RadioButton radioButton2 = (RadioButton) findViewById(radioId2);
                Toast.makeText(this,radioButton1.getText()+" and "+radioButton2.getText()+" is selected",Toast.LENGTH_LONG).show();
            }
        }
    }

Answer 2

在xml和java下面试试这个

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RadioGroup
        android:id="@+id/rg1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="92dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.508"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <RadioButton
            android:id="@+id/rb1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onCustomClick"
            android:text="rb1" />

        <RadioButton
            android:id="@+id/rb2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onCustomClick"
            android:text="rb2" />
    </RadioGroup>


    <RadioGroup
        android:id="@+id/rg2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="228dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <RadioButton
            android:id="@+id/rb3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onCustomClick"
            android:text="rb3" />

        <RadioButton
            android:id="@+id/rb4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onCustomClick"
            android:text="rb4" />
    </RadioGroup>
</android.support.constraint.ConstraintLayout>

MainActivity.java :

public class MainActivity extends Activity {

    RadioButton rb1, rb3;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        rb1 = (RadioButton) findViewById(R.id.rb1);
        rb3 = (RadioButton) findViewById(R.id.rb3);

        rb1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onCustomClick(v);
            }
        });
    }

    public void onCustomClick(View view) {
        boolean checked = ((RadioButton) view).isChecked();
        if (rb1.isChecked() && rb3.isChecked())
            Toast.makeText(getApplicationContext(), "1 and 3 selected",
                    Toast.LENGTH_SHORT).show();

    }
}

如果选择了组 1 中的 radiobutton1 和组 2 中的 radiobutton3，它将显示 toast。