• 单选框与复选框的实现


    <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.hanqi.test5">
    
        <application
            android:allowBackup="true"
            android:icon="@mipmap/ic_launcher"
            android:label="@string/app_name"
            android:supportsRtl="true"
            android:theme="@style/AppTheme">
            <activity android:name=".UIActivity1">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
    
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
            <activity android:name=".LongClickActivityActivity">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
    
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
           
            <activity android:name=".CalculatorActivity">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
    
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
            <activity android:name=".MainActivity">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
    
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
            <activity android:name=".Activity1" />
    
    
        </application>
    
    </manifest>
    package com.hanqi.test5;
    
    import android.os.Bundle;
    import android.support.annotation.IdRes;
    import android.support.v7.app.AppCompatActivity;
    import android.widget.CheckBox;
    import android.widget.CompoundButton;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;
    import android.widget.Toast;
    
    public class UIActivity1 extends AppCompatActivity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_ui1);
            //单选框
            RadioGroup radioGroup = (RadioGroup)findViewById(R.id.rg);
    
            radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
                public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) {
                    if (checkedId == R.id.rb3) //rb3设定为正确答案
                    {
                        Toast.makeText(UIActivity1.this, "选对了", Toast.LENGTH_LONG).show();
                    }
                    RadioButton rb = (RadioButton) findViewById(checkedId);
                    Toast.makeText(UIActivity1.this, rb.getText(), Toast.LENGTH_LONG).show();
                }
            });
    
    
    
    
            //复选框
            CheckBox cb_st = (CheckBox)findViewById(R.id.cb_st);
            cb_st.setOnCheckedChangeListener(new CBOnCheckedChangListenter() {
                @Override
                public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    
                }
            });
    
            cb_st.setOnCheckedChangeListener(new CBOnCheckedChangListenter());
    
            CheckBox cb_jc = (CheckBox)findViewById(R.id.cb_jc);
            cb_jc.setOnCheckedChangeListener(new CBOnCheckedChangListenter());
    
            CheckBox cb_xt = (CheckBox)findViewById(R.id.cb_xt);
            cb_xt.setOnCheckedChangeListener(new CBOnCheckedChangListenter());
    
            CheckBox cb_xhx = (CheckBox)findViewById(R.id.cb_xhx);
            cb_xhx.setOnCheckedChangeListener(new CBOnCheckedChangListenter());
    
    
        }
        private class CBOnCheckedChangListenter implements CompoundButton.OnCheckedChangeListener
        {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            CheckBox cb = (CheckBox)buttonView;
    
            if (isChecked) {
                Toast.makeText(UIActivity1.this, "选中了" + cb.getText(), Toast.LENGTH_LONG).show();
            }
            else
            {
                Toast.makeText(UIActivity1.this, "取消了" + cb.getText(), Toast.LENGTH_LONG).show();
            }
        }
        }
    }
    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="10dp"
        android:orientation="vertical"
        tools:context="com.hanqi.test5.UIActivity1">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="请选择Android的开发语言是什么?"/>
    
        <RadioGroup
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:id="@+id/rg">
    
            <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="C++"
                android:id="@+id/rb1"
                android:layout_marginRight="30dp"
                android:checked="true"/>
            <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="C"
                android:id="@+id/rb2"
                android:layout_marginRight="30dp"/>
            <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="JAVA"
                android:id="@+id/rb3"
                android:layout_marginRight="30dp"/>
            <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="C#"
                android:id="@+id/rb4" />
        </RadioGroup>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="请选择字体效果"/>
    
        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="宋体"
            android:id="@+id/cb_st"
            android:checked="true"/>
        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="加粗"
            android:id="@+id/cb_jc" />
        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="斜体"
            android:id="@+id/cb_xt" />
        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="下划线"
            android:id="@+id/cb_xhx" />
    
    </LinearLayout>

    在虚拟机6.0版本实现时,自带动画效果很好,可以用于做调查或者考试

    效果图:

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  • 原文地址:https://www.cnblogs.com/fangchongyan/p/5356941.html
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