My requirement is to be able to be able to check only 1 radio button from the no of options available.
My layout is simple
User should be able to select only one of p1, p2 and p3.
The IDs for for the buttons are rB1,rB2 and rB3.
PS: I know it is possible to achieve the same with RadioGroup , but in this particular instance I want to go with Radio Button hence the query
Try this..
r1.setOnCheckedChangeListener(this);
r2.setOnCheckedChangeListener(this);
r3.setOnCheckedChangeListener(this);
And CheckedChangeListener
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
if (buttonView.getId() == R.id.rB1) {
r2.setChecked(false);
r3.setChecked(false);
}
if (buttonView.getId() == R.id.rB2) {
r1.setChecked(false);
r3.setChecked(false);
}
if (buttonView.getId() == R.id.rB3) {
r1.setChecked(false);
r2.setChecked(false);
}
}
}
and don't forget to implements OnCheckedChangeListener in your activity or fragment.
Try this way:
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioButton
android:id="#+id/p1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="P1" />
<RadioButton
android:id="#+id/p2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="P2" />
<RadioButton
android:id="#+id/p3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="P3" />
</RadioGroup>
Use Radio group
XML:
<RadioGroup
android:id="#+id/radiogroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioButton
android:id="#+id/rB1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="P1"
android:checked="true" />
<RadioButton
android:id="#+id/rB2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="P2" />
<RadioButton
android:id="#+id/rB3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="P3" />
</RadioGroup>
try below code:-
java
public class MyAndroidAppActivity extends Activity {
private RadioGroup radioSexGroup;
private RadioButton radioSexButton;
private Button btnDisplay;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addListenerOnButton();
}
public void addListenerOnButton() {
radioSexGroup = (RadioGroup) findViewById(R.id.radioSex);
btnDisplay = (Button) findViewById(R.id.btnDisplay);
btnDisplay.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// get selected radio button from radioGroup
int selectedId = radioSexGroup.getCheckedRadioButtonId();
// find the radiobutton by returned id
radioSexButton = (RadioButton) findViewById(selectedId);
Toast.makeText(MyAndroidAppActivity.this,
radioSexButton.getText(), Toast.LENGTH_SHORT).show();
}
});
}
}
xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<RadioGroup
android:id="#+id/radioSex"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioButton
android:id="#+id/radioMale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/radio_male"
android:checked="true" />
<RadioButton
android:id="#+id/radioFemale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/radio_female" />
</RadioGroup>
<Button
android:id="#+id/btnDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/btn_display" />
</LinearLayout>
for more detail see below link:-
http://www.mkyong.com/android/android-radio-buttons-example/
http://www.tutorialspoint.com/android/android_radiogroup_control.htm
The solution can be achieved by setting a android:onClick="onRadioButtonClick" in the layout.xml file and creating a onRadioButtonClick method in Activity.java
public void onRadioButtonClick(View v)
{
boolean checked = ((RadioButton) v).isChecked();
RadioButton r1 = (RadioButton) findViewById(R.id.rB1);
RadioButton r2 = (RadioButton) findViewById(R.id.rB2);
RadioButton r3 = (RadioButton) findViewById(R.id.rB3);
switch(v.getId()) {
case R.id.rB1:
if (checked){
r2.setChecked(false);
r3.setChecked(false);
}
break;
case R.id.rB2:
if (checked){
r1.setChecked(false);
r3.setChecked(false);
}
break;
case R.id.rB2:
if (checked){
r1.setChecked(false);
r2.setChecked(false);
}
break;
}
I am posting this soulution because I couldn't find the solution to this query on this site(when I was looking for it earlier in the day) and had to figure it out myself. This might be useful for someone else looking for a similar solution.
Related
I have two radio buttons i.e., call and email. When call is selected then the edit box should get enabled and then user may enter the mobile number.
I've checked these links:
Enable a text box only when 1 of the radio button is clicked
Enable text box based on radio button selected
Making Text box not editable
but am not able to achieve this task.
Here is my code:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp" >
<RadioGroup
android:id="#+id/radioGroup1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="2"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radio0"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/call"/>
<RadioButton
android:id="#+id/radio1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="#string/email"
android:layout_weight="1" />
</RadioGroup>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:weightSum="1">
<TextView
android:id="#+id/textView21"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="#string/mobile"
android:textColor="#000000"
android:textSize="15sp"
android:layout_weight="0.3" />
<EditText
android:id="#+id/editText1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="numberDecimal"
android:maxLength="10"
android:layout_weight="0.7"
android:inputType="none" />
</LinearLayout>
.java
public class MainActivity extends Activity {
String mobile;
RadioGroup rg1 = (RadioGroup) findViewById(R.id.radioGroup1);
EditText edit = (EditText) findViewById(R.id.editText1);
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
edit.setEnabled(false);
edit.setInputType(InputType.TYPE_NULL);
edit.setFocusable(false);
rg1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId) {
case R.id.radio0:
op1="call";
actv();
break;
case R.id.radio1:
op1="email";
break;
}
}
});
public void actv() {
edit.setEnabled(true);
edit.setInputType(InputType.TYPE_CLASS_TEXT);
edit.setFocusable(true);
}
Besides correcting your member initialization (as suggested in each of the previous answers), you need to fix your layout (it is closed too early, resulting in an invalid xml).
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RadioGroup
android:id="#+id/radioGroup1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:orientation="horizontal"
android:weightSum="2" >
<RadioButton
android:id="#+id/radio0"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/call" />
<RadioButton
android:id="#+id/radio1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:checked="true"
android:text="#string/email" />
</RadioGroup>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:weightSum="1" >
<TextView
android:id="#+id/textView21"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.3"
android:text="#string/mobile"
android:textColor="#000000"
android:textSize="15sp" />
<EditText
android:id="#+id/editText1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.7"
android:ems="10"
android:maxLength="10" />
</LinearLayout>
</LinearLayout>
Also decide which way you'd like to prevent the user from typing into the edittext (disable / hide / input type tweaks).
And last but not least, put all of these together in a clean manner:
public class MainActivity extends Activity implements OnCheckedChangeListener
{
private String op1;
private RadioGroup rg1;
private EditText edit;
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rg1 = (RadioGroup) findViewById(R.id.radioGroup1);
rg1.setOnCheckedChangeListener(this);
edit = (EditText) findViewById(R.id.editText1);
actv(false);
}
#Override
public void onCheckedChanged(RadioGroup group, int checkedId)
{
switch (checkedId)
{
case R.id.radio0:
op1 = "call";
actv(true);
break;
case R.id.radio1:
op1 = "email";
actv(false);
break;
}
}
private void actv(final boolean active)
{
edit.setEnabled(active);
if (active)
{
edit.requestFocus();
}
}
}
#Zoya RadioGroup rg1 = (RadioGroup) findViewById(R.id.radioGroup1);
included this before onCreate method # MagicalPhoenixĻ” Not working
means the screen is not displayed..this is my 1st screen so as soon as
i start the app it says "the application has stopped
unexpectedly..please try again.."
It's giving crash.
REASON:
RadioGroup rg1 = (RadioGroup) findViewById(R.id.radioGroup1);
EditText edit = (EditText) findViewById(R.id.editText1);
You have included these before onCreate method.
This won't work, obviously.
Add that after your setContentView call inside onCreate method.
Hope it helps.
This is What you need to do
Change this
RadioGroup rg1 = (RadioGroup) findViewById(R.id.radioGroup1);
EditText edit = (EditText) findViewById(R.id.editText1);
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
to this
RadioGroup rg1 = null;
EditText edit = null;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rg1 = (RadioGroup) findViewById(R.id.radioGroup1);
edit = (EditText) findViewById(R.id.editText1);
}
Thanks :)
add:
rg1 = (RadioGroup) findViewById(R.id.radioGroup1);
edit = (EditText) findViewById(R.id.editText1);
after:
setContentView(R.layout.activity_main);
in your onCreate();
Also make sure to set edit.setEditable(false) when radio1 is checked.
Complete Code:
public class MainActivity extends Activity {
String mobile;
RadioGroup rg1 = null;
EditText edit = null;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rg1 = (RadioGroup) findViewById(R.id.radioGroup1);
edit = (EditText) findViewById(R.id.editText1);
edit.setEnabled(false);
edit.setInputType(InputType.TYPE_NULL);
edit.setFocusable(false);
rg1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId) {
case R.id.radio0:
op1="call";
enableEdit(true);
break;
case R.id.radio1:
op1="email";
enableEdit(false);
break;
}
}
});
}
public void enableEdit(boolean state) {
edit.setEnabled(state);
edit.setFocusable(state);
if(state){ edit.setInputType(InputType.TYPE_CLASS_TEXT); }
else { edit.setInputType(InputType.TYPE_NULL); }
}
}
Am trying to use radio button group widget to select gender in my application. Now here is the thing. The user will select a gender and on clicking the button the user will be guided to the respective activity. I wrote the code . The second problem is that my program does nothing though am launching new activities in the if part. I debugged my program to see if the if condition is satisfied seems to me it does. Here is the xml and the .java file
public class Gender extends Activity{
private RadioGroup radioSexGroup;
private RadioButton radioSexButton;
private Button btnDisplay;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gender_asking);
addListenerOnButton();
}
public void addListenerOnButton() {
radioSexGroup = (RadioGroup) findViewById(R.id.radioSex);
btnDisplay = (Button) findViewById(R.id.gender_button);
btnDisplay.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
//****************************
int selectedId = radioSexGroup.getCheckedRadioButtonId();
// find the radiobutton by returned id
radioSexButton = (RadioButton) findViewById(selectedId);
if("Iam a Guy!".equals(radioSexButton.getText()))
{
Intent male_activity = new Intent(Gender.this, Meter.class);
startActivity(male_activity);
}
if("Iam a Girl!".equals(radioSexButton.getText()))
{
Intent male_activity = new Intent(Gender.this, For_Girl.class);
startActivity(male_activity);
}
//********************************
}
});
}
}
and the associated xml is:
<RelativeLayout 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:background="#drawable/hyu_bg"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".KissingMeter" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="34dp"
android:text="Tell Us Your Gender!"
android:textSize="30dp" />
<RadioGroup
android:id="#+id/radioSex"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/gender_button"
android:layout_below="#+id/textView1"
android:layout_marginTop="30dp" >
<RadioButton
android:id="#+id/radioMale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/radioFemale"
android:layout_alignLeft="#+id/radioFemale"
android:layout_marginBottom="34dp"
android:checked="true"
android:text="Iam a Guy!" />
<RadioButton
android:id="#+id/radioFemale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/gender_button"
android:layout_centerHorizontal="true"
android:layout_marginBottom="44dp"
android:text="Iam a Girl!" />
</RadioGroup>
<Button
android:id="#+id/gender_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/radioSex"
android:layout_centerHorizontal="true"
android:layout_marginTop="18dp"
android:text="Lol" />
</RelativeLayout>
First of all, don't rely on the text of a View in this situation. If you decide to change it later then it will create problems. Most likely, you won't change the id of it so just use that. Change it to something like this
btnDisplay.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v)
{
int selectedId = radioSexGroup.getCheckedRadioButtonId(); / get the id
switch (selectedId) // switch on the button selected
{
case R.id.radioMale:
Intent male_activity = new Intent(Gender.this, Meter.class);
startActivity(male_activity);
break;
case R.id.radioFemale:
Intent male_activity = new Intent(Gender.this, For_Girl.class);
startActivity(male_activity);
break;
default:
Toast.makeText(v.getContext(), "No gender selected",
Toast.LENGTH_SHORT).show();
break;
}
//********************************
}
});
I have a problem with my RadioButton which I declerate in my activity_main.xml:
<RadioButton
android:id="#+id/RadioButton01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/RadioButton00"
android:layout_alignBottom="#+id/RadioButton00"
android:layout_marginLeft="9dp"
android:layout_toRightOf="#+id/RadioButton00" />
<RadioButton
android:id="#+id/RadioButton02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/RadioButton01"
android:layout_alignBottom="#+id/RadioButton01"
android:layout_marginLeft="7dp"
android:layout_toRightOf="#+id/RadioButton01" />
Some of this RadioButtons are set programaticly to "true". But the user should have the right to make it to "false" if he clicks on it. At the moment it doesn't. If I click on it, it just still be true and does not switch to false.
public class MainActivity extends Activity {
private RadioButton RB1, RB2;
int[][] RBTrue = new int[3][16];
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RB1 = (RadioButton) findViewById(R.id.RadioButton00);
RB2 = (RadioButton) findViewById(R.id.RadioButton01);
}
public void setRadioButtons()
{
steine sander = new steine();
sander.setSteine();
RBTrue = sander.getSteine();
if(RBTrue[0][0] == 1)
RB1.setChecked(true);
if(RBTrue[0][1] == 1)
RB2.setChecked(true);
}
So it's pretty easy. I gonna give an array and check it if it's 1 or not. If it is the RadioButton switching to true. But sometimes the user need to switch it back to false. At the moment it's not possible.
Declare the RadioButtons inside a RadioGroup(details here).
<RadioGroup
android:id="#+id/radio_group"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioButton
android:id="#+id/RadioButton01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="...."
android:textSize="15sp" />
<RadioButton
android:id="#+id/RadioButton02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="....."
android:textSize="15sp" />
</RadioGroup>
then inside activity,,,
RadioGroup rgGroup=(RadioGroup)findViewById(R.id.radio_group);
int selectedId = rgGroup.getCheckedRadioButtonId();
RadioButton rBtn1 =(RadioButton)findViewById(selectedId);
Toast.makeText(MyAndroidAppActivity.this,
rBtn1.getText(), Toast.LENGTH_SHORT).show();
I'm having a set of 9 radio Buttons(a group of 3 each),user has to select 3 (1 of each group)
on right selection a increment in score while on wrong selection decrement in score,but problem is that if all 3 correct ans are selected score is coming right else not ,also it is not responding to re selecting of another radio button of the group.On submit button i have written the code, I am new in development so kindly guide
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
switch (buttonView.getId()) {
case R.id.qa:cb.setChecked(false);
cc.setChecked(false);
cd.setChecked(false);
s[0] = false;
break;
case R.id.qb:
ca.setChecked(false);
cc.setChecked(false);
cd.setChecked(false);
s[0] = false;
break;
case R.id.qc:
cb.setChecked(false);
ca.setChecked(false);
cd.setChecked(false);
s[0] = true;
break;
}
public void onClick(View v) {
score = 0;
for (int i = 0; i < 3; i++) {
if (s[i] == true)
score++;
else
score--;
}
where s is boolean s[] = new boolean[];
I am new in development so not able to sort out problem
The code sample below will add the radiobuttons dynamically to a group so that you can arrange the buttons in any way you like using any layouts.
Layout : main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weightSum="1" >
<RadioButton
android:id="#+id/rbtn1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight=".5"
android:text="A" />
<RadioButton
android:id="#+id/rbtn2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight=".5"
android:text="B" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weightSum="1" >
<RadioButton
android:id="#+id/rbtn3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight=".5"
android:text="C" />
<RadioButton
android:id="#+id/rbtn4"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight=".5"
android:text="D" />
</LinearLayout>
</LinearLayout>
Code : MainActivity.xml
public class MainActivity extends Activity {
private static final String GROUP_A = "GroupA";
private static final String GROUP_B = "GroupB";
private List<RadioButton> radioButtons;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
RadioButton rbtn1 = (RadioButton) findViewById(R.id.rbtn1);
RadioButton rbtn2 = (RadioButton) findViewById(R.id.rbtn2);
RadioButton rbtn3 = (RadioButton) findViewById(R.id.rbtn3);
RadioButton rbtn4 = (RadioButton) findViewById(R.id.rbtn4);
addRadioButtonToGroup(rbtn1, GROUP_A);
addRadioButtonToGroup(rbtn2, GROUP_A);
addRadioButtonToGroup(rbtn3, GROUP_A);
addRadioButtonToGroup(rbtn4, GROUP_B);
}
private void addRadioButtonToGroup(RadioButton rbtn, String group) {
rbtn.setTag(group);
if (radioButtons == null) {
radioButtons = new ArrayList<RadioButton>();
}
radioButtons.add(rbtn);
rbtn.setOnCheckedChangeListener(new RadioButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
for (int i = 0; i < radioButtons.size(); i++) {
RadioButton radioButton = radioButtons.get(i);
if (radioButton
.getTag()
.toString()
.equalsIgnoreCase(
buttonView.getTag().toString())) {
if (!radioButton.equals(buttonView)) {
radioButton.setChecked(false);
}
}
}
}
}
});
}
}
Here..First 3 radio buttons will belong to the group A and other to Group B, which makes sure one radio button in a group can be checked at a time. We also dont need the RadioGroup and this code gives the control to arrange Radio Buttons in anyway you like.
Use RadioGroup instead of checking and un checking the RadioButtons manually.
If You put 3 radio buttons in a radio group, you will be able to check a radio button at one time, RadioGroup will manage it.
Check the sample below : On Submit button click it will calculate the score.
layout : main.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="First Question" />
<RadioGroup
android:id="#+id/rg1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<RadioButton
android:id="#+id/rbtn1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="A" />
<RadioButton
android:id="#+id/rbtn2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="B" />
<RadioButton
android:id="#+id/rbtn3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="C" />
</RadioGroup>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Second Question" />
<RadioGroup
android:id="#+id/rg2"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<RadioButton
android:id="#+id/rbtn4"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="P" />
<RadioButton
android:id="#+id/rbtn5"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Q" />
<RadioButton
android:id="#+id/rbtn6"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="R" />
</RadioGroup>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Third Question" />
<RadioGroup
android:id="#+id/rg3"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<RadioButton
android:id="#+id/rbtn7"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="X" />
<RadioButton
android:id="#+id/rbtn8"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Y" />
<RadioButton
android:id="#+id/rbtn9"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Z" />
</RadioGroup>
<Button
android:id="#+id/btnSubmit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Submit" />
</LinearLayout>
</ScrollView>
Activity :
package com.example.demo;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioGroup;
import android.widget.Toast;
public class MainActivity extends Activity {
private RadioGroup rg1;
private RadioGroup rg2;
private RadioGroup rg3;
private OnClickListener btnClickListener = new OnClickListener() {
#Override
public void onClick(View v) {
int answerCount = 0;
if (rg1.getCheckedRadioButtonId() == R.id.rbtn1)
answerCount++;
if (rg2.getCheckedRadioButtonId() == R.id.rbtn5)
answerCount++;
if (rg3.getCheckedRadioButtonId() == R.id.rbtn9)
answerCount++;
Toast.makeText(MainActivity.this, String.valueOf(answerCount),
Toast.LENGTH_SHORT).show();
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
rg1 = (RadioGroup) findViewById(R.id.rg1);
rg2 = (RadioGroup) findViewById(R.id.rg2);
rg3 = (RadioGroup) findViewById(R.id.rg3);
Button btnSumbit = (Button) findViewById(R.id.btnSubmit);
btnSumbit.setOnClickListener(btnClickListener);
}
}
quiz_list.xml : My xml file
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/question"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#43bd00"
android:textSize="20sp"
android:textStyle="bold"
android:paddingTop="4dip"
android:paddingBottom="1dip" />
<RadioGroup
android:id="#+id/radioGroup"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="Radio Group"
>
<RadioButton
android:id="#+id/option1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<RadioButton
android:id="#+id/option2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<RadioButton
android:id="#+id/option3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<RadioButton
android:id="#+id/option4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</RadioGroup>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="5dp"
android:gravity="bottom|center_horizontal"
android:orientation="horizontal" >
<Button
android:id="#+id/loadPrevious"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:layout_marginTop="10dp"
android:text="Load Previous"
android:visibility="invisible" />
<Button
android:id="#+id/loadNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:layout_marginTop="10dp"
android:text="Load Next" />
</LinearLayout>
I have a list of questions and radio buttons have the options for it.
The problems that I face are
1. When i load the next list a button is already selected.
2. When i load the previous list a different button is selected instead of the one i selected.
This is my code containing the questions as a json.
String json = "[{\"question\": \"What?\", \"option1\": \"alpha\" , \"option2\": \"beta\" , \"option3\": \"gamma\" , \"option4\": \"alpha\"},{\"question\": \"What is your name ?\", \"option1\": \"Dinesh\" , \"option2\": \"Boopesh\" , \"option3\": \"Srinath\" , \"option4\": \"JK\"},{\"question\": \"What is the capital of India?\", \"option1\": \"Delhi\" , \"option2\": \"Bombay\" , \"option3\": \"Calcutta\" , \"option4\": \"Chennai\"}]";
Gson gson = new Gson();
JsonParser parser = new JsonParser();
JsonArray array = parser.parse(json).getAsJsonArray();
for(JsonElement obj : array) {
Quiz quiz = gson.fromJson(obj,Quiz.class);
String question = quiz.getQuestion();
System.out.println("Question: "+question);
quizList.add(quiz);
}
I'm adding the questions using a customadapter.
How can i change it to make it work ??
Any Ideas ??? Pls let me know...
Thanks Nishit.
try this
RadioGroup radioGroup;
RadioButton radioButton1;
RadioButton radioButton2;
RadioButton radioButton3;
boolean hack = false;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
radioGroup = (RadioGroup) findViewById(R.id.radioGroup);
radioButton1 = (RadioButton) findViewById(R.id.r1);
radioButton2 = (RadioButton) findViewById(R.id.r2);
radioButton3 = (RadioButton) findViewById(R.id.r3);
OnClickListener radioClickListener = new OnClickListener()
{
public void onClick(View v)
{
if (v.getId() == radioGroup.getCheckedRadioButtonId() && hack)
{
radioGroup.clearCheck();
}
else
{
hack = true;
}
}
};
OnCheckedChangeListener radioCheckChangeListener = new OnCheckedChangeListener()
{
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
hack = false;
}
};
radioButton1.setOnCheckedChangeListener(radioCheckChangeListener);
radioButton2.setOnCheckedChangeListener(radioCheckChangeListener);
radioButton3.setOnCheckedChangeListener(radioCheckChangeListener);
radioButton1.setOnClickListener(radioClickListener);
radioButton2.setOnClickListener(radioClickListener);
radioButton3.setOnClickListener(radioClickListener);
}