Aug 14, 2021

Calculator App In Android Studio With Source Code || Androidpro App Builders Androidpro.in

 If you are looking an android app projects code then you are come right place here you get a lot of android projects with source code.

In this post we are show how to create a calculator with complete  source code and guide step by step.

 

MainActivity.Java

package in.apps.androidpro.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.TypedValue;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    
private Button b1;
    
private Button b2;
    
private Button b3;
    
private Button b4;
    
private Button b5;
    
private Button b6;
    
private Button b7;
    
private Button b8;
    
private Button b9;
    
private Button b0;
    
private Button b_equal;
    
private Button b_multi;
    
private Button b_divide;
    
private Button b_add;
    
private Button b_sub;
    
private Button b_clear;
    
private Button b_dot;
    
private Button b_para1;
    
private Button b_para2;
    
private TextView t1;
    
private TextView t2;
    
private final char ADDITION '+';
    
private final char SUBTRACTION '-';
    
private final char MULTIPLICATION '*';
    
private final char DIVISION '/';
    
private final char EQU '=';
    
private final char EXTRA '@';
    
private final char MODULUS '%';
    
private char ACTION;
    
private double val1 = Double.NaN;
    
private double val2;
    
@Override
    
protected void onCreate(Bundle savedInstanceState) {
        
super.onCreate(savedInstanceState);
        setContentView(R.layout.
activity_main);
        viewSetup();

        
b1.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "1");
            }
        });

        
b2.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "2");
            }
        });

        
b3.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "3");
            }
        });

        
b4.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "4");
            }
        });

        
b5.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "5");
            }
        });

        
b6.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "6");
            }
        });

        
b7.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "7");
            }
        });

        
b8.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "8");
            }
        });

        
b9.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "9");
            }
        });

        
b0.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                ifErrorOnOutput();
                exceedLength();
                
t1.setText(t1.getText().toString() + "0");
            }
        });

        
b_dot.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                exceedLength();
                
t1.setText(t1.getText().toString() + ".");
            }
        });

        
b_para1.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                
if (t1.getText().length() > 0) {
                    
ACTION MODULUS;
                    operation();
                    
if (!ifReallyDecimal()) {
                        
t2.setText(val1 "%");
                    
else {
                        
t2.setText((intval1 "%");
                    }
                    
t1.setText(null);
                
else {
                    
t2.setText("Error");
                }
            }
        });

        
b_add.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                
if (t1.getText().length() > 0) {
                    
ACTION ADDITION;
                    operation();
                    
if (!ifReallyDecimal()) {
                        
t2.setText(val1 "+");
                    
else {
                        
t2.setText((intval1 "+");
                    }
                    
t1.setText(null);
                
else {
                    
t2.setText("Error");
                }
            }
        });

        
b_sub.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                
if (t1.getText().length() > 0) {
                    
ACTION SUBTRACTION;
                    operation();
                    
if (t1.getText().length() > 0)
                        
if (!ifReallyDecimal()) {
                            
t2.setText(val1 "-");
                        
else {
                            
t2.setText((intval1 "-");
                        }
                    
t1.setText(null);
                
else {
                    
t2.setText("Error");
                }
            }
        });

        
b_multi.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                
if (t1.getText().length() > 0) {
                    
ACTION MULTIPLICATION;
                    operation();
                    
if (!ifReallyDecimal()) {
                        
t2.setText(val1 "×");
                    
else {
                        
t2.setText((intval1 "×");
                    }
                    
t1.setText(null);
                
else {
                    
t2.setText("Error");
                }
            }
        });

        
b_divide.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                
if (t1.getText().length() > 0) {
                    
ACTION DIVISION;
                    operation();
                    
if (ifReallyDecimal()) {
                        
t2.setText((intval1 "/");
                    
else {
                        
t2.setText(val1 "/");
                    }
                    
t1.setText(null);
                
else {
                    
t2.setText("Error");
                }
            }
        });

        
b_para2.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                
if (!t2.getText().toString().isEmpty() || !t1.getText().toString().isEmpty()) {
                    
val1 = Double.parseDouble(t1.getText().toString());
                    
ACTION EXTRA;
                    
t2.setText("-" t1.getText().toString());
                    
t1.setText("");
                
else {
                    
t2.setText("Error");
                }
            }
        });

        
b_equal.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                
if (t1.getText().length() > 0) {
                    operation();
                    
ACTION EQU;
                    
if (!ifReallyDecimal()) {
                        
t2.setText(/*t2.getText().toString() + String.valueOf(val2) + "=" + */String.valueOf(val1));
                    
else {
                        
t2.setText(/*t2.getText().toString() + String.valueOf(val2) + "=" + */String.valueOf((intval1));
                    }
                    
t1.setText(null);
                
else {
                    
t2.setText("Error");
                }
            }
        });

        
b_clear.setOnClickListener(new View.OnClickListener() {
            
@Override
            
public void onClick(View view) {
                
if (t1.getText().length() > 0) {
                    CharSequence name = 
t1.getText().toString();
                    
t1.setText(name.subSequence(0, name.length() - 1));
                
else {
                    
val1 = Double.NaN;
                    
val2 = Double.NaN;
                    
t1.setText("");
                    
t2.setText("");
                }
            }
        });

        
// Empty text views on long click.
        
b_clear.setOnLongClickListener(new View.OnLongClickListener() {
            
@Override
            
public boolean onLongClick(View view) {
                
val1 = Double.NaN;
                
val2 = Double.NaN;
                
t1.setText("");
                
t2.setText("");
                
return true;
            }
        });
    }

    
private void viewSetup() {
        
b1 = findViewById(R.id.button1);
        
b2 = findViewById(R.id.button2);
        
b3 = findViewById(R.id.button3);
        
b4 = findViewById(R.id.button4);
        
b5 = findViewById(R.id.button5);
        
b6 = findViewById(R.id.button6);
        
b7 = findViewById(R.id.button7);
        
b8 = findViewById(R.id.button8);
        
b9 = findViewById(R.id.button9);
        
b0 = findViewById(R.id.button0);
        
b_equal = findViewById(R.id.button_equal);
        
b_multi = findViewById(R.id.button_multi);
        
b_divide = findViewById(R.id.button_divide);
        
b_add = findViewById(R.id.button_add);
        
b_sub = findViewById(R.id.button_sub);
        
b_clear = findViewById(R.id.button_clear);
        
b_dot = findViewById(R.id.button_dot);
        
b_para1 = findViewById(R.id.button_para1);
        
b_para2 = findViewById(R.id.button_para2);
        
t1 = findViewById(R.id.input);
        
t2 = findViewById(R.id.output);
    }

    
private void operation() {
        
if (!Double.isNaN(val1)) {
            
if (t2.getText().toString().charAt(0) == '-') {
                
val1 = (-1) * val1;
            }
            
val2 = Double.parseDouble(t1.getText().toString());

            
switch (ACTION) {
                
case ADDITION:
                    
val1 val1 val2;
                    
break;
                
case SUBTRACTION:
                    
val1 val1 val2;
                    
break;
                
case MULTIPLICATION:
                    
val1 val1 val2;
                    
break;
                
case DIVISION:
                    
val1 val1 val2;
                    
break;
                
case EXTRA:
                    
val1 = (-1) * val1;
                    
break;
                
case MODULUS:
                    
val1 val1 val2;
                    
break;
                
case EQU:
                    
break;
            }
        
else {
            
val1 = Double.parseDouble(t1.getText().toString());
        }
    }

    
// Remove error message that is already written there.
    
private void ifErrorOnOutput() {
        
if (t2.getText().toString().equals("Error")) {
            
t2.setText("");
        }
    }

    
// Whether value if a double or not
    
private boolean ifReallyDecimal() {
        
return val1 == (intval1;
    }

    
private void noOperation() {
        String inputExpression = 
t2.getText().toString();
        
if (!inputExpression.isEmpty() && !inputExpression.equals("Error")) {
            
if (inputExpression.contains("-")) {
                inputExpression = inputExpression.replace(
"-""");
                
t2.setText("");
                
val1 = Double.parseDouble(inputExpression);
            }
            
if (inputExpression.contains("+")) {
                inputExpression = inputExpression.replace(
"+""");
                
t2.setText("");
                
val1 = Double.parseDouble(inputExpression);
            }
            
if (inputExpression.contains("/")) {
                inputExpression = inputExpression.replace(
"/""");
                
t2.setText("");
                
val1 = Double.parseDouble(inputExpression);
            }
            
if (inputExpression.contains("%")) {
                inputExpression = inputExpression.replace(
"%""");
                
t2.setText("");
                
val1 = Double.parseDouble(inputExpression);
            }
            
if (inputExpression.contains("×")) {
                inputExpression = inputExpression.replace(
"×""");
                
t2.setText("");
                
val1 = Double.parseDouble(inputExpression);
            }
        }
    }

    
// Make text small if too many digits.
    
private void exceedLength() {
        
if (t1.getText().toString().length() > 10) {
            
t1.setTextSize(TypedValue.COMPLEX_UNIT_SP20);
        }
    }
}

 

Step 2 ActivityMain.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
   
android:background="#000"
   
tools:context=".MainActivity">


    <
Button
      
android:id="@+id/button1"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="1"
       
android:textColor="#ffff"
        
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.043"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.817" />

    <
Button
       
android:id="@+id/button2"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="2"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.352"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.817" />

    <
Button
       
android:id="@+id/button3"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="3"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.672"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.817" />

    <
Button
       
android:id="@+id/button4"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="4"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.043"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.677" />

    <
Button
       
android:id="@+id/button5"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="5"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.352"
        
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.677" />

    <
Button
       
android:id="@+id/button6"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="6"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.672"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.677" />

    <
Button
       
android:id="@+id/button7"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="7"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.043"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.541" />

    <
Button
       
android:id="@+id/button8"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="8"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.352"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.541" />

    <
Button
       
android:id="@+id/button9"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="9"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.672"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.541" />

    <
Button
       
android:id="@+id/button0"
       
android:layout_width="185dp"
       
android:layout_height="80dp"
       
android:background="@drawable/new_but"
       
android:paddingRight="95sp"
       
android:text="0"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.061"
       
app:layout_constraintStart_toStartOf="parent"
        
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.957" />

    <
Button
       
android:id="@+id/button_equal"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/arithmatic_button"
       
android:text="="
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.99"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.958" />

    <
Button
       
android:id="@+id/button_multi"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/arithmatic_button"
       
android:text="×"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.99"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.541" />

    <
Button
       
android:id="@+id/button_divide"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/arithmatic_button"
       
android:text="/"
       
android:textColor="#ffff"
        
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.987"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.406" />

    <
Button
       
android:id="@+id/button_add"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/arithmatic_button"
       
android:text="+"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.99"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.817" />

    <
Button
       
android:id="@+id/button_sub"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/arithmatic_button"
       
android:text="-"
       
android:textColor="#ffff"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
        
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.99"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.677" />

    <
Button
       
android:id="@+id/button_clear"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/button"
       
android:text="AC"
       
android:textColor="#060606"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.043"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.406" />

    <
Button
       
android:id="@+id/button_para1"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/button"
       
android:text="%"
       
android:textColor="#060606"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.672"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.406" />

    <
Button
       
android:id="@+id/button_para2"
        
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/button"
       
android:text="+/-"
       
android:textColor="#060606"
       
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.349"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.406" />

    <
Button
       
android:id="@+id/button_dot"
       
android:layout_width="80dp"
       
android:layout_height="80dp"
       
android:background="@drawable/circle_button"
       
android:text="."
       
android:textColor="#ffff"
        
android:textSize="28sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.671"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.958" />

    <
TextView
       
android:id="@+id/input"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:textColor="@android:color/background_light"
       
android:textSize="68sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.909"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.252" />

    <
TextView
       
android:id="@+id/output"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:textColor="@android:color/background_light"
       
android:textSize="36sp"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.909"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.051" />

</
androidx.constraintlayout.widget.ConstraintLayout>

 

 

Step 3 arithmatic_button.xml (drawable)

 

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <
item android:state_pressed="false">
        <
shape android:shape="oval">
            <
solid android:color="#fe9500"/>
        </
shape>
    </
item>
    <
item android:state_pressed="true">
        <
shape android:shape="oval">
            <
solid android:color="#fe9500"/>
        </
shape>
    </
item>
</
selector>

 

Step 4 button.xml (drawable)
 
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <
item android:state_pressed="false">
        <
shape android:shape="oval">
            <
solid android:color="#a5a5a1"/>
        </
shape>
    </
item>
    <
item android:state_pressed="true">
        <
shape android:shape="oval">
            <
solid android:color="#a5a5a5"/>
        </
shape>
    </
item>
</
selector>
 
Step 5 circle_button.xml (drawable)
 
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <
item android:state_pressed="false">
        <
shape android:shape="oval">
            <
solid android:color="#323232"/>
        </
shape>
    </
item>
    <
item android:state_pressed="true">
        <
shape android:shape="oval">
            <
solid android:color="#323232"/>
        </
shape>
    </
item> </selector>
 
Step 3 new_but.xml (drawable)
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners
        android:bottomRightRadius="50dp"
        android:topRightRadius="50dp"
        android:bottomLeftRadius="50dp"
        android:topLeftRadius="50dp"/>
    <solid android:color="#323232" />
</
shape>
 

Now Run Your Project

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Jul 22, 2021

Add back button toolbar android studio

If you are using android studio and you want to add back button toolbar, then follow the below steps.

Paste this code in your java file


 

Add back button android studio

Java



      
        package in.app.androidpro.makemoneyonline;

        import androidx.appcompat.app.ActionBar;
        import androidx.appcompat.app.AppCompatActivity;
        
        
        import android.os.Bundle;
        import android.view.Menu;
        import android.view.MenuItem;
        import android.webkit.WebView;
        
        public class Card1 extends AppCompatActivity {
        
            @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_card1);
        
        
                ActionBar actionBar = getSupportActionBar();
                if (actionBar != null) {
                    actionBar.setDisplayHomeAsUpEnabled(true);
                }
        
                    WebView webView;
                    webView = findViewById(R.id.webview);
                    webView.loadUrl("file:///android_asset/Start A YouTube Channel.html");
                }
        
            public boolean onOptionsItemSelected(MenuItem item){
                switch (item.getItemId()) {
                    case android.R.id.home:
                        finish();
                        return true;
                }
                return super.onOptionsItemSelected(item);
            }
        
            public boolean onCreateOptionsMenu(Menu menu) {
                return true;
        
            }
        }
        
        
        
       
        
    

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