How to create and handle checkbox with button click

Step 01: Follow the following code for  AndroidMain.xml.


<?xml version="1.0" encoding="utf-8"?> <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: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="com.example.rupom.onclickimplimentmethod.MainActivity"> <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Milk" android:id="@+id/checkBox1" /> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Rice" android:id="@+id/checkBox2" /> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Sugar" android:id="@+id/checkBox3" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button1" /> <TextView android:layout_marginTop="20dp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="" android:id="@+id/textView1" /> </LinearLayout> </RelativeLayout>

 Step 01: Follow the following code for  AndroidMain.java
 import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import android.widget.TextView; import android.widget.Toast; import java.security.PrivilegedExceptionAction; public class MainActivity extends AppCompatActivity { private CheckBox MilkCheckBox,RiceCheckBox,SugarCheckBox; private Button GetButton; private TextView ResultText; public MainActivity() { } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); MilkCheckBox = (CheckBox) findViewById(R.id.checkBox1); RiceCheckBox = (CheckBox) findViewById(R.id.checkBox2); SugarCheckBox = (CheckBox) findViewById(R.id.checkBox3); GetButton =(Button) findViewById(R.id.button1); ResultText=(TextView)findViewById(R.id.textView1); GetButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { StringBuilder MyAllString = new StringBuilder(); if(MilkCheckBox.isChecked()) { String MilkValue= MilkCheckBox.getText().toString(); MyAllString.append (MilkValue+" is orderded\n"); } if(RiceCheckBox.isChecked()) { String RiceValue= RiceCheckBox.getText().toString(); MyAllString.append(RiceValue+" is orderded\n"); } if(RiceCheckBox.isChecked()) { String SugarValue= SugarCheckBox.getText().toString(); MyAllString.append(SugarValue+" is orderded\n"); } ResultText.setText(MyAllString); } }); } }