Android Radio Button And Radio Group 1

Android Development

Android Radio Button And Radio Group 1 :

⇛ layout > .xml file :

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".First"

android:orientation="vertical"

android:gravity="center"

android:padding="10dp"

android:id="@+id/linearlayout">

<!--RadioGrup for RadioButtons-->

<RadioGroup

android:id="@+id/Idradiogroup1"

android:layout_width="wrap_content"

android:layout_height="wrap_content">

<RadioButton

android:id="@+id/Idradiobutton1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="red"/>

<RadioButton

android:id="@+id/Idradiobutton2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Blue"/>

<RadioButton

android:id="@+id/Idradiobutton3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Green"/>

<RadioButton

android:id="@+id/Idradiobutton4"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Yellow"/>

<RadioButton

android:id="@+id/Idradiobutton5"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="White"/>

<RadioButton

android:id="@+id/Idradiobutton6"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text=""/>

<RadioButton

android:id="@+id/Idradiobutton7"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Black"/>

</RadioGroup>

</LinearLayout>

⇛ java file :

package com.example.dell.radiobuttonandradiogroup;

import android.graphics.Color;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.LinearLayout;

import android.widget.RadioButton;

import android.widget.RadioGroup;

public class First extends AppCompatActivity {

private RadioGroup rg1;

LinearLayout linearLayout;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_first);

rg1 = (RadioGroup) findViewById(R.id.Idradiogroup1);

linearLayout = (LinearLayout) findViewById(R.id.linearlayout);

/*When click on any RadioButton, the listener will execute*/

rg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

@Override

public void onCheckedChanged(RadioGroup group, int checkedId) {

switch (checkedId){

/*If red is seected*/

case R.id.Idradiobutton1:

linearLayout.setBackgroundColor(Color.RED);

break;

/*If blue is selected*/

case R.id.Idradiobutton2:

linearLayout.setBackgroundColor(Color.BLUE);

break;

/*If green is selected*/

case R.id.Idradiobutton3:

linearLayout.setBackgroundColor(Color.GREEN);

break;

case R.id.Idradiobutton4:

linearLayout.setBackgroundColor(Color.YELLOW);

break;

case R.id.Idradiobutton6:

linearLayout.setBackgroundColor(Color.WHITE);

break;

case R.id.Idradiobutton7:

linearLayout.setBackgroundColor(Color.BLACK);

break;

}

}

});

}

}