CheckBox

程序员文章站 2022-07-05 09:42:29

CheckBox:复选框RadioButton:单选按钮

CheckBox:复选框
RadioButton:单选按钮

<?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="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">


    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="请选择你喜欢的城市:" />

    <CheckBox
        android:id="@+id/checkBox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="true"
        android:text="北京" />

    <CheckBox
        android:id="@+id/checkBox2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="上海" />

    <CheckBox
        android:id="@+id/checkBox3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="深圳" />

    <CheckBox
        android:id="@+id/checkBox4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="珠海" />
</LinearLayout>

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioGroup;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private CheckBox ck1,ck2,ck3,ck4;
    private String str="您选择了";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ck1=(CheckBox)findViewById(R.id.checkBox);
        ck2=(CheckBox)findViewById(R.id.checkBox2);
        ck3=(CheckBox)findViewById(R.id.checkBox3);
        ck4=(CheckBox)findViewById(R.id.checkBox4);
        CompoundButton.OnCheckedChangeListener listener=new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton cb, boolean isChecked) {
                if(isChecked){
                    Toast.makeText(MainActivity.this,str+cb.getText().toString(),Toast.LENGTH_LONG).show();
                }
            }
        };
        ck1.setOnCheckedChangeListener(listener);
        ck2.setOnCheckedChangeListener(listener);
        ck3.setOnCheckedChangeListener(listener);
        ck4.setOnCheckedChangeListener(listener);
    }
}