I'm building the layout at run time, i have to show a radio group with 4 radio buttons for the user , but some times i should show an Edit Field with the radio button so the user can write some thing related to that radio button in the edit box.
I want the edit field to appear beside the radio button ,.
I tried to build the edit field but it keeps showing under the radio group, and if i sepereate one of the buttons in a linear layout with the edit text, it become out of the scope for the radio group.
this is the code for building the radio group
RadioGroup radioGroup = new RadioGroup(context);
radioGroup.setContentDescription(id);
for (int i = 0; i < vector.size(); i++) {
RadioButton radioButton = new RadioButton(context);
radioButton.setTextColor(Color.BLACK);
radioButton.setText("" + vector.get(i).getQ_text());
radioButton.setContentDescription(vector.get(i).getA_id());
radioButton.setTextSize(20);
radioButton.setTextColor(Color.parseColor("#A5462E"));
radioGroup.addView(radioButton);
radioGroup.setPadding(20, 0, 0, 0);
How can i build the edit field at run time to be shown next to the radio button.
My suggestion would be to create the layout for each row of your RadioGroup in a xml file like this:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RadioButton
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<EditText
android:id="#+id/edit_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="invisible"/>
</LinearLayout>
And then in your loop you can inflate this layout and do what do you want with it:
final LinearLayout root = (LinearLayout) findViewById(R.id.root);
final RadioGroup radioGroup = new RadioGroup(this);
for (int i = 0; i < 3; i++) {
final LinearLayout item = (LinearLayout) LayoutInflater.from(this).inflate(R.layout.item_radio_button, null);
final RadioButton button = (RadioButton) item.findViewById(R.id.button);
final EditText editText = (EditText) item.findViewById(R.id.edit_text);
button.setText("Test");
// Your condition to show or not the editText
if (i % 2 == 0) {
editText.setVisibility(View.VISIBLE);
}
radioGroup.addView(item);
}
root.addView(radioGroup);
Related
I have 16 Radio Group in my layout and i have 40 Radio Button . I want to get which Radio Button is unchecked in Radio Groups. I want to know how can i know is there any unchecked Radio Button in my layout thanks
You should probably group all of your buttons like so:
RadioGroup rg = (RadioGroup) findViewById(R.id.my_radio_group);
List<RadioButton> radioButtonsList = new ArrayList<>();
for(int i = 0; i < rg.getChildCount(); ++i) {
RadioButton b = rg.getChildAt(i);
if(b.isChecked()) radioButtonsList.add(b);
}
Do it for all of your groups and you'll have all your unchecked buttons in a list.
Also you can use:
int checkedRadioButtonId = rg.getCheckedRadioButtonId()
to get only checked button's id.
ArrayList<RadioGroup> radioGroupList = new ArrayList<RadioGroup>();
RadioGroup group1 = (RadioGroup)findViewById(...);
RadioGroup group2 = (RadioGroup)findViewById(...);
.
.
RadioGroup group16 = (RadioGroup)findViewById(...);
radioGroupList.add(group1);
radioGroupList.add(group2);
.
.
radioGroupList.add(group16);
and later you can check which is checked or not with this
for(RadioGroup radioButtonGroup:RadioGroupList){
int radioButtonID = radioButtonGroup.getCheckedRadioButtonId();
View radioButton = radioButtonGroup.findViewById(radioButtonID);
int idx = radioButtonGroup.indexOfChild(radioButton);
}
or if it's the RadioButtons you are interested in then add them in an ArrayList the same way and loop in that list like this
for(RadioButton radioButton:radioButtonList){
boolean isChecked = radioButton.isChecked();
}
You can check the state of radio buttons by using the isChecked() method.
This question has already been answered here:
How to check if "Radiobutton" is checked?
I have the following radigroup in the xml
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|bottom"
android:orientation="horizontal"
android:id="#+id/radiogroup">
</RadioGroup>
and I am checking the number of objects in my json and generate radiobuttons and add them in the radiogroup as follows.
private void createRadioButton(int nImages) {
final RadioButton[] rb = new RadioButton[nImages];
for(int i=0; i<nImages; i++){
rb[i] = new RadioButton(this);
rb[i].setId(i);
radioGroup.addView(rb[i]);
}
}
now I need to know how to know and check selected radio button ?
when I was hardcoded, the following was working,
radioGroup.check(R.id.radioButton0);
but now I am adding radio buttons programmatically, I do not know how to handle
radioGroup.check(??);
If you want to select radio button at a particular position in radiogroup, you can use
radioGroup.check(radioGroup.getChildAt(position).getId());
where position is the position of the radio button in radio group
you set id of radiobutton as index of array in this part of code rb[i].setId(i);
you can use the following code radioGroup.check(i);
In xml layout I have RadioGroup, Button1, Button2. When user clicks on button1, several radio buttons are programmatically created in RadioGroup (total amount of radio buttons may differ (pocet = count of radio buttons to be created).
final RadioButton[] rb = new RadioButton[pocet];
RadioGroup rg = (RadioGroup) findViewById(R.id.MyRadioGroup);
radiobuttonCount++;
for(int i=0; i<pocet; i++){
rb[i] = new RadioButton(this);
rb[i].setText("Radio Button " + radiobuttonCount);
rb[i].setId(radiobuttonCount+i);
rb[i].setBackgroundResource(R.drawable.button_green);
rg.addView(rb[i]);
}
What I try to do is this: When user selects xy item from RadioGroup, I'll pass selected value to textview and remove all radioButtons.
For deleting purpose I use:
public void onCheckedChanged(RadioGroup rGroup, int checkedId)
{
RadioButton checkedRadioButton = (RadioButton)rGroup.findViewById(checkedId);
boolean isChecked = checkedRadioButton.isChecked();
if (isChecked)
{
RadioGroup rg = (RadioGroup) findViewById(R.id.MyRadioGroup);
for (int i=0; i< rg.getChildCount(); i++){
rg.removeViewAt(i);
}
}
Problem is that this sometimes works well, but sometimes first radio button remains undeleted.
P.S.
Later I want to add button2 that will feed radiogroup with different items and different radio buttons amount. That's why I need to remove all radio buttons after user does selection.
Its really easy, you just do this:
rg.removeAllViews();
because i worked with the for loop but it didn't remove all the RadioButtons.
have fun :)
My first guess is that this portion of code is bad:
for (int i=0; i< rg.getChildCount(); i++){
rg.removeViewAt(i);
}
you can't run over one view's children while removing child at the same time
(rg.getChildCount() will change during the run)
I am using RadioGroup, added RadioButton rdbut to RadioGroup rdgrp like rdgrp.addView(rdbut).
for(int j=0;j<3;j++)
{
RadioGroup rdgrp = new RadioGroup;
for(int i=0;i<=10;i++)
{
RadioButton rdbut = new RadioButton(this);
rdbut.setText("RadioButtion"+i);
rdbut.setId(i);
rdbut.setTag("somename");
rdgrp.addView(rdbut);
}
}
the above code shows how I initialize the radiogroup and radio button. after I run the this code, in emulator/mobile , i am able to check 2 radio buttons at a time.
What could be the problem?
Change your code like this.
RadioGroup rdgrp[] = new RadioGroup[3];
For(int j=0;j<3;j++)
{
RadioButton rdbut[] = new RadioButton[10];
For(int i=0;i<=10;i++)
{
rdbut[i].setText("RadioButtion"+i);
rdbut[i].setId(j*100+i);
rdbut[i].setTag("somename");
rdgrp[j].addView(rdbut[i]);
}
}
You have created three different Radio Group. You can select only one radio button from a single group.So from three groups you can select three buttons But there is no inter-group relationship. You can select radio buttons from different group simultaneously. In your case you can select three buttons at max.
Thanks
Sunil
Use Some thing like this xml design in user layout file.
<TableLayout
android:id="#+id/tbl_layoutchoice"
style="#style/InfoTableView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="3dip" >
<RadioGroup
android:id="#+id/SelectLayout_Group"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
</RadioGroup>
</TableLayout>
and For Use this RadioGroup in Activity 's OnCreate() Method and findView like this
mRadioGroup = (RadioGroup) this.findViewById(R.id.SelectLayout_Group);
and Then Use Below Code With Your Require Change To Add Radio Button in One RadioGroup.Use Also Below Require Declaration for Create Radio Button Dynamically.
ArrayList<String> layoutlist = new ArrayList<String>(3);
int index = -1;
LayoutParams lp = new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT);
for (String layout : layoutlist) {
RadioButton r = new RadioButton(this);
index++;
r.setText(layout);
r.setId(index);
r.setLayoutParams(lp);
r.setTextAppearance(this, R.style.TextBase);
mRadioGroup.addView(r);
}
So don't forget to add your String Value in layoutlist before for loop .and R.style is some Require Style for Text Show in RadioButton.
If I have a page whose layout is designated by XML code, but I want to possibly create a few radio buttons, say, in the middle, but decide that at runtime, how would I do it? I'm new to Android so I'm taking a stab in the dark. Would something like this work?
In the XML, add a LinearLayout to the middle of the page's XML like this:
<LinearLayout android:id="#+id/LinLayBut"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
And then in the java something like this:
public void setupRadioButtons(){
LinearLayout linLay;
linLay = (LinearLayout) findViewById(R.id.LinLayBut);
RadioGroup radGroup = new RadioGroup(this);
RadioButton radBut = new RadioButton(this);
radGroup.addView(radBut, 0);
radGroup.setText("A button");
}
This is not an efficient way to build dynamic UI. You would be better off defining the optional layout in an XML file and then inflate it when you want to use it:
public void setupRadioButtons() {
final LayoutInflater inflater =
(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout buttons =
(LinearLayout) inflater.inflate(R.layout.LinLayBut, null);
LinearLayout mainLayout = (LinearLayout) findViewById(R.id.main);
mainLayout.addView(buttons);
}
The above code assumes that the radio group and buttons are defined inside the LinearLayout with id LinLayBut and you main layout id is main.
OK, thanks to unluddite, I got it to work. For those tortured souls following the thread, here's the code. The XML doesn't have a layout around it. And if I don't call the method, the radio group takes no vertical space:
<RadioGroup android:id="#+id/radButGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" />
and here's the method:
public void setupRadioButtons(){
RadioGroup radGroup;
radGroup = (RadioGroup) findViewById(R.id.radButGroup);
RadioButton radBut0 = new RadioButton(this);
radGroup.addView(radBut0, 0); //2nd arg must match order of buttons
radBut0.setText("one Button");
RadioButton radBut1 = new RadioButton(this);
radGroup.addView(radBut1, 1);
radBut1.setText("Two Button");
radBut1.setChecked(true); //which button is set