RadioGroup与CheckBox

最新推荐文章于 2020-10-03 10:43:31 发布

原创最新推荐文章于 2020-10-03 10:43:31 发布 · 256 阅读

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本文深入探讨了在Android应用中如何通过RadioGroup、CheckBox等UI组件实现用户交互与反馈机制，包括性别选择、运动偏好等功能的实现，并通过Toast提示提供即时反馈。

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.java

package com.example.radiogroup_text;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class MainActivity extends Activity {
//对控件进行声明
private RadioGroup genderGroup;
private RadioButton femaleButton;
private RadioButton maleButton;
private CheckBox swimBox;
private CheckBox runBox;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//通过控件ID获得代表控件对象
genderGroup=(RadioGroup)findViewById(R.id.genderGroup);
femaleButton=(RadioButton)findViewById(R.id.femaleButton);
maleButton=(RadioButton)findViewById(R.id.maleButton);
swimBox=(CheckBox)findViewById(R.id.swim);
runBox=(CheckBox)findViewById(R.id.run);
genderGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
public void onCheckedChanged(RadioGroup group,int checkedId){
if(femaleButton.getId() == checkedId){
System.out.println("famale");
Toast.makeText(MainActivity.this, "hujhkjhkjhkh", Toast.LENGTH_LONG).show();
}
else if(maleButton.getId() == checkedId)
{
System.out.println("male");

}
}

});

//为多选按钮添加监听器
swimBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked)
{
System.out.println("swim is checked");
Toast.makeText(MainActivity.this, "hujhkjhkjhkh", Toast.LENGTH_LONG).show();
}
else
{
System.out.println("swim is unchecked");
}
}
});
runBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked)
{
System.out.println("run is checked");
}
else
{
System.out.println("run is unchecked");
}
}
});
}

}

.XML

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

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<RadioGroup
android:id="@+id/genderGroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<RadioButton
android:id="@+id/femaleButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/female"
/>
<RadioButton
android:id="@+id/maleButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/male"
/>
</RadioGroup>
<CheckBox
android:id="@+id/swim"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/swim"
/>
<CheckBox
android:id="@+id/run"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/run"
/>
</LinearLayout>