单选框复选框的实现

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<?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>

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单选框 复选框的实现

单选框复选框的实现