radio group setOnCheckedChangeListener [英] radio group setOnCheckedChangeListener
本文介绍了radio group setOnCheckedChangeListener的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我对收音机组有一些问题，我是Android开发的新手，所以我对如何处理它没有太多的想法。这是有一些输入字段和用于选择性别和保存按钮的广播组的形式。
但我不知道在哪里可以准确地放置我的radiogroup setoncheakchangelistener？所以它给了我错误。
主要活动：
package com .dietandroidproject;
import Databasedata.Person;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
公共类MainActivity扩展Activity {
@Override
protected void onCreate（Bundle savedInstanceState）{
super.onCreate（savedInstanceState） ;
setContentView（R.layout.activity_main）;
final RadioGroup genderselected =（RadioGroup）findViewById（R.id.selectgender）;
genderselected.setOnCheckedChangeListener（new RadioGroup.OnCheckedChangeListener（）{
@Override
public void onCheckedChanged（RadioGroup arg0，int selectedId）{
selectedId = genderselected.getCheckedRadioButtonId（）;
RadioButton genderchoosed =（RadioButton）findViewById（selectedId）;
String gender = genderchoosed.getText（）。toString（）;
}
}）;
按钮saveinformation =（按钮）findViewById（R.id.saveinformation）;
saveinformation.setOnClickListener（new View.OnClickListener（）{
EditText weighttext =（EditText）findViewById（R.id.weighttext）;
EditText heighttext =（EditText）findViewById（ R.id.heighttext）;
EditText usernametext =（EditText）findViewById（R.id.usernametext）;
EditText agetext =（EditText）findViewById（R.id.agetext）;
Spinner activitytext =（Spinner）findViewById（R.id.chooseactivity）;
Button saveinformation =（Button）findViewById（R.id.saveinformation）;
String pa = activitytext.getSelectedItem（）。toString（）;
@Override
public void onClick（查看v）{
int weight =（int）Float.parseFloat（weighttext.getText（）
.toString（）） ;
int height =（int）Float.parseFloat（heighttext.getText（）
.toString（））;
String username = usernametext.getText（）。toString（）;
int age =（int）Float.parseFloat（agetext.getText（）。toString（））;
TextView genderchoosed =（TextView）findViewById（genderselected
.getCheckedRadioButtonId（））;
String gender = genderchoosed.getText（）。toString（）;
String pa = activitytext.getSelectedItem（）。toString（）;
// BMI ======================================= ===================
int Bmivalue = calculateBMI（体重，身高）;
String bmiInterpretation = interpretBMI（Bmivalue）;
浮动理想体重=理想体重（体重，身高，性别，年龄，年龄）;
每日双卡路里=每日卡路里（体重，身高，性别，年龄，年龄）;
//将数据插入db =================================== ================
人员=新人（）;
person.setUsername（username）;
person.setHeight（height）;
person.setWeight（weight）;
person.setAge（age）;
person.setGender（性别）;
person.setPa（pa）;
person.setBmivalue（Bmivalue）;
person.setBmiInterpretation（bmiInterpretation）;
person.setIdealweight（idealweight）;
person.setDailycalories（dailycalories）;
Databasedata.DatabaseAdapter dbAdapter = new Databasedata.DatabaseAdapter（
MainActivity.this）;
dbAdapter.insertPerson（person）;
Toast.makeText（getApplicationContext（），
Bmivalue +，你是+ bmiInterpretation，
Toast.LENGTH_LONG）。show（）;
}
}）;
}
// BMI功能===================================== ==========
private int calculateBMI（int weight，int height）{
return（int）（weight /（height * height））;
};
private String interpretBMI（int Bmivalue）{
if（Bmivalue< 18.5）{
return减持;
}否则如果（Bmivalue< 25）{
返回正常;
}否则如果（Bmivalue< 30）{
返回超重;
}其他{
返回Obese;
}
}
//理想体重================================ ========
private float idealweight（int weight，int height，String gender，String pa，
int age）{
float x =（float） 0.0;
int bmi;
bmi = idealbmi（age）;
x = bmi *（身高*身高）;
返回x;
}
public int idealbmi（int age）{
int bmi = 0;
if（年龄> 17&& age< = 19）{
bmi = 21;
}
if（age> 19&& age< = 24）{
bmi = 22;
}
if（年龄> 24&& age< = 34）{
bmi = 23;
}
if（年龄> 34&& age< = 44）{
bmi = 24;
}
if（年龄> 44&& age< = 54）{
bmi = 25;
}
if（年龄> 54&& age< = 64）{
bmi = 26;
}
if（age> 64）{
bmi = 27;
}
返回bmi;
}
//每日卡路里===================================== ==========
public double legitpa（String pa）{
double legitpa = 0;
if（pa.equals（Highly active））{
suitablepa = 1.48;
}
if（pa.equals（Active））{
suitablepa = 1.25;
}
if（pa.equals（Low activity））{
suitablepa = 1.11;
}
if（pa.equals（Sedentary））{
suitablepa = 1;
}
返回properpa;
}
private double dailycalories（int weight，int height，String gender，
String pa，int age）{
double dailycalori = 0;
倍i;
double j;
双倍;
双k;
if（gender.equals（femaleselected））{
i = 9.36 * weight;
j = 726 *身高;
h = properpa（pa）*（i + j）;
k = 6.91 *年龄;
dailycalori = 354-k + h;
}否则if（gender.equals（maleselected））{
i = 15.91 * weight;
j = 539.6 *身高;
h = properpa（pa）*（i + j）;
k = 9.53 *年龄;
dailycalori = 662-k + h;
}
return dailycalori;
}
}
XML CODES
<？xml version =1.0encoding =utf-8？>
< LinearLayout xmlns：android =http://schemas.android.com/apk/res/android
android：layout_width =match_parent
android：layout_height =match_parent
android：background =@ drawable / backgroundmain
android：orientation =vertical>
< RelativeLayout
android：id =@ + id / personinformation
android：layout_width =match_parent
android：layout_height =0dp
android：layout_weight =1.98>
< EditText
android：id =@ + id / heighttext
android：layout_width =wrap_content
android：layout_height =wrap_content
android：layout_alignLeft =@ + id / usernametext
android：layout_below =@ + id / usernametext
android：ems =10
android：hint =输入你的高度>
< / EditText>
< EditText
android：id =@ + id / usernametext
android：layout_width =wrap_content
android：layout_height =wrap_content
android：layout_alignParentTop =true
android：layout_centerHorizontal =true
android：layout_marginTop =20dp
android：ems =10
android：hint = 输入用户名/>
< EditText
android：id =@ + id / weighttext
android：layout_width =wrap_content
android：layout_height =wrap_content
android：layout_alignLeft =@ + id / heighttext
android：layout_below =@ + id / heighttext
android：ems =10
android：hint =输入你的重量/>
< EditText
android：id =@ + id / agetext
android：layout_width =wrap_content
android：layout_height =wrap_content
android：layout_alignLeft =@ + id / weighttext
android：layout_below =@ + id / weighttext
android：ems =10
android：hint =输入你的年龄>
< requestFocus />
< / EditText>
< / RelativeLayout>
<查看
android：layout_width =250dp
android：layout_height =1dip
android：layout_gravity =center
android： layout_marginTop =20dp
android：background =＃aaa/>
< RelativeLayout
android：id =@ + id / choosegender
android：layout_width =match_parent
android：layout_height =0dp
android：layout_weight =0.78>
< TextView
android：id =@ + id / choosefemaleormale
android：layout_width =match_parent
android：layout_height =30dip
android：layout_alignParentLeft =true
android：layout_alignParentTop =true
android：layout_marginTop =10dip
android：gravity =center
android：text = 性别：
android：textAlignment =center
android：textColor =＃555
android：textSize =19sp/>
< RadioGroup
android：id =@ + id / selectgender
android：layout_width =220dip
android：layout_height =wrap_content
android：layout_below =@ + id / choosefemaleormale
android：layout_centerHorizontal =true
android：orientation =horizontal>
< RadioButton
android：id =@ + id / femaleselected
android：layout_width =0dp
android：layout_height =wrap_content
android：layout_gravity =left
android：layout_weight =1
android：checked =true
android：text =female
android：onClick = onRadioButtonClicked
/>
< RadioButton
android：id =@ + id / maleselected
android：layout_width =0dp
android：layout_height =wrap_content
android：layout_gravity =right
android：layout_weight =1
android：text =male
android：onClick =onRadioButtonClicked/>
< / RadioGroup>
< / RelativeLayout>
<查看
android：layout_width =250dp
android：layout_height =1dip
android：layout_gravity =center
android：layout_marginTop =20dp
android：background =＃aaa/>
< RelativeLayout
android：id =@ + id / choosepa
android：layout_width =250dip
android：layout_height =0dp
android： layout_weight =1
android：layout_gravity =center>
< Spinner
android：id =@ + id / chooseactivity
android：layout_width =wrap_content
android：layout_height =wrap_content
android：layout_alignParentLeft =true
android：layout_alignParentTop =true
android：entries =@ array / activityitems
android：gravity =center
android ：prompt =@ string / level_of_activity/>
< / RelativeLayout>
<按钮
android：layout_width =90dp
android：layout_height =0dp
android：layout_gravity =right
android： layout_marginBottom =10dip
android：layout_marginRight =20dp
android：layout_weight =0.46
android：background =@ drawable / recent_foods_depressed
android：hint =保存
android：text =save
android：textColor =#ffff
android：textSize =20sp
android：textStyle =bold
android：onClick =saveinformation
android：id =@ + id / saveinformation/>
< / LinearLayout>
解决方案
问题在于您的单选按钮试图引用主活动中的 onRadioButtonClicked 方法。但是你没有指定那个方法。请记住，如果您使用 android：onClick ，则不应在主要活动中使用 setOnCheckedChangeListener ，反之亦然。 / p>
I have some problem with radio group, I am new to Android development so I don't have much idea to how can handle it.This is form which has some input filed and radio group for choosing gender and save button. but I don't know where can I exactly put my radiogroup setoncheakchangelistener? so it gives me errors.
MAIN ACTIVITY :
package com.dietandroidproject;
import Databasedata.Person;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final RadioGroup genderselected = (RadioGroup) findViewById(R.id.selectgender);
genderselected.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup arg0, int selectedId) {
selectedId=genderselected.getCheckedRadioButtonId();
RadioButton genderchoosed = (RadioButton) findViewById(selectedId);
String gender = genderchoosed.getText().toString();
}
});
Button saveinformation = (Button) findViewById(R.id.saveinformation);
saveinformation.setOnClickListener(new View.OnClickListener() {
EditText weighttext = (EditText) findViewById(R.id.weighttext);
EditText heighttext = (EditText) findViewById(R.id.heighttext);
EditText usernametext = (EditText) findViewById(R.id.usernametext);
EditText agetext = (EditText) findViewById(R.id.agetext);
Spinner activitytext = (Spinner) findViewById(R.id.chooseactivity);
Button saveinformation = (Button) findViewById(R.id.saveinformation);
String pa = activitytext.getSelectedItem().toString();
@Override
public void onClick(View v) {
int weight = (int) Float.parseFloat(weighttext.getText()
.toString());
int height = (int) Float.parseFloat(heighttext.getText()
.toString());
String username = usernametext.getText().toString();
int age = (int) Float.parseFloat(agetext.getText().toString());
TextView genderchoosed = (TextView) findViewById(genderselected
.getCheckedRadioButtonId());
String gender = genderchoosed.getText().toString();
String pa = activitytext.getSelectedItem().toString();
//BMI==========================================================
int Bmivalue = calculateBMI(weight, height);
String bmiInterpretation = interpretBMI(Bmivalue);
float idealweight = idealweight(weight, height, gender, pa, age);
double dailycalories=dailycalories(weight,height,gender,pa,age);
//insert data in to db===================================================
Person person = new Person();
person.setUsername(username);
person.setHeight(height);
person.setWeight(weight);
person.setAge(age);
person.setGender(gender);
person.setPa(pa);
person.setBmivalue(Bmivalue);
person.setBmiInterpretation(bmiInterpretation);
person.setIdealweight(idealweight);
person.setDailycalories(dailycalories);
Databasedata.DatabaseAdapter dbAdapter = new Databasedata.DatabaseAdapter(
MainActivity.this);
dbAdapter.insertPerson(person);
Toast.makeText(getApplicationContext(),
Bmivalue + "and you are" + bmiInterpretation,
Toast.LENGTH_LONG).show();
}
});
}
//BMI FUNCTION===============================================
private int calculateBMI(int weight, int height) {
return (int) (weight / (height * height));
};
private String interpretBMI(int Bmivalue) {
if (Bmivalue < 18.5) {
return "Underweight";
} else if (Bmivalue < 25) {
return "Normal";
} else if (Bmivalue < 30) {
return "Overweight";
} else {
return "Obese";
}
}
//IDEAL WEIGHT========================================
private float idealweight(int weight, int height, String gender, String pa,
int age) {
float x = (float) 0.0;
int bmi;
bmi = idealbmi(age);
x = bmi * (height * height);
return x;
}
public int idealbmi(int age) {
int bmi = 0;
if (age > 17 && age <= 19) {
bmi = 21;
}
if (age > 19 && age <= 24) {
bmi = 22;
}
if (age > 24 && age <= 34) {
bmi = 23;
}
if (age > 34 && age <= 44) {
bmi = 24;
}
if (age > 44 && age <= 54) {
bmi = 25;
}
if (age > 54 && age <= 64) {
bmi = 26;
}
if (age > 64) {
bmi = 27;
}
return bmi;
}
//DAILY CALORIES===============================================
public double suitablepa(String pa) {
double suitablepa = 0;
if (pa.equals("Highly active")) {
suitablepa = 1.48;
}
if (pa.equals("Active")) {
suitablepa = 1.25;
}
if (pa.equals("Low activity")) {
suitablepa = 1.11;
}
if (pa.equals("Sedentary")) {
suitablepa = 1;
}
return suitablepa;
}
private double dailycalories(int weight, int height, String gender,
String pa, int age) {
double dailycalori = 0;
double i;
double j;
double h;
double k;
if(gender.equals("femaleselected")){
i=9.36*weight;
j=726*height;
h=suitablepa(pa)*(i+j);
k=6.91*age;
dailycalori=354-k+h;
}else if(gender.equals("maleselected")){
i=15.91*weight;
j=539.6*height;
h=suitablepa(pa)*(i+j);
k=9.53*age;
dailycalori=662-k+h;
}
return dailycalori;
}
}
XML CODES
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/backgroundmain"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/personinformation"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1.98" >
<EditText
android:id="@+id/heighttext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/usernametext"
android:layout_below="@+id/usernametext"
android:ems="10"
android:hint="Enter Your Height" >
</EditText>
<EditText
android:id="@+id/usernametext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:ems="10"
android:hint="Enter Username" />
<EditText
android:id="@+id/weighttext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/heighttext"
android:layout_below="@+id/heighttext"
android:ems="10"
android:hint="Enter Your Weight" />
<EditText
android:id="@+id/agetext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/weighttext"
android:layout_below="@+id/weighttext"
android:ems="10"
android:hint="Enter Your Age" >
<requestFocus />
</EditText>
</RelativeLayout>
<View
android:layout_width="250dp"
android:layout_height="1dip"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:background="#aaa" />
<RelativeLayout
android:id="@+id/choosegender"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.78" >
<TextView
android:id="@+id/choosefemaleormale"
android:layout_width="match_parent"
android:layout_height="30dip"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="10dip"
android:gravity="center"
android:text="Gender : "
android:textAlignment="center"
android:textColor="#555"
android:textSize="19sp" />
<RadioGroup
android:id="@+id/selectgender"
android:layout_width="220dip"
android:layout_height="wrap_content"
android:layout_below="@+id/choosefemaleormale"
android:layout_centerHorizontal="true"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/femaleselected"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_weight="1"
android:checked="true"
android:text="female"
android:onClick="onRadioButtonClicked"
/>
<RadioButton
android:id="@+id/maleselected"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="1"
android:text="male"
android:onClick="onRadioButtonClicked" />
</RadioGroup>
</RelativeLayout>
<View
android:layout_width="250dp"
android:layout_height="1dip"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:background="#aaa" />
<RelativeLayout
android:id="@+id/choosepa"
android:layout_width="250dip"
android:layout_height="0dp"
android:layout_weight="1"
android:layout_gravity="center" >
<Spinner
android:id="@+id/chooseactivity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:entries="@array/activityitems"
android:gravity="center"
android:prompt="@string/level_of_activity" />
</RelativeLayout>
<Button
android:layout_width="90dp"
android:layout_height="0dp"
android:layout_gravity="right"
android:layout_marginBottom="10dip"
android:layout_marginRight="20dp"
android:layout_weight="0.46"
android:background="@drawable/recent_foods_depressed"
android:hint="save"
android:text="save"
android:textColor="#fff"
android:textSize="20sp"
android:textStyle="bold"
android:onClick="saveinformation"
android:id="@+id/saveinformation"/>
</LinearLayout>
解决方案
The thing is that your radio buttons trying to refer the onRadioButtonClicked method in your main activity. But you didnt specify that method. Remember, if you're using android:onClick you should not use setOnCheckedChangeListener in your Main activity and vice versa.
这篇关于radio group setOnCheckedChangeListener的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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