Download Android Calculator App Java Code and XML Layout and more Schemes and Mind Maps Mobile Computing in PDF only on Docsity! VIT-AP UNIVERSITY, ANDHRA PRADESH Lab Sheet 3: Calculator Academic year: 2021- 2022 Branch/Class:B.Tech Semester: Fall Date: 17- 09 - 2021 Faculty Name: Dr.N.Anupama School: SCOPE NAME: Barath kumar v REGNO: 20BCR MainActivity CODE: package com.example.calc; import androidx.appcompat.app.AppCompatActiv ity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MainActivity extends AppCompatActivity { Button button0, button1, button2, button3, button4, button5, button6, button7, button8, button9, buttonAdd, buttonSub, buttonDivision, buttonMul, button10, buttonC, buttonEqual; EditText crunchifyEditText; float mValueOne, mValueTwo; boolean crunchifyAddition, mSubtract, crunchifyMultiplication, crunchifyDivision;
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button0 = (Button) findViewById(R.id.button0); button1 = (Button) findViewById(R.id.button1); button2 = (Button) findViewById(R.id.button2); button3 = (Button) findViewById(R.id.button3); button4 = (Button) findViewById(R.id.button4); button5 = (Button) findViewById(R.id.button5); button6 = (Button) findViewById(R.id.button6); button7 = (Button) findViewById(R.id.button7); button8 = (Button) findViewById(R.id.button8); button9 = (Button) findViewById(R.id.button9); button10 = (Button) findViewById(R.id.button10); buttonAdd = (Button) findViewById(R.id.buttonadd); buttonSub = (Button) findViewById(R.id.buttonsub); buttonMul = (Button) findViewById(R.id.buttonmul); buttonDivision = (Button) findViewById(R.id.buttondiv); buttonC = (Button) findViewById(R.id.buttonC); buttonEqual = (Button) findViewById(R.id.buttoneql); crunchifyEditText = (EditText) findViewById(R.id.edt1);
crunchifyEditText.setText(crunchifyEditText.getText() + "4"); } }); button5.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { crunchifyEditText.setText(crunchifyEditText.getText() + "5"); } }); button6.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { crunchifyEditText.setText(crunchifyEditText.getText() + "6"); } }); button7.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { crunchifyEditText.setText(crunchifyEditText.getText() + "7"); } }); button8.setOnClickListener(new View.OnClickListener() {
@Override public void onClick(View v) { crunchifyEditText.setText(crunchifyEditText.getText() + "8"); } }); button9.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { crunchifyEditText.setText(crunchifyEditText.getText() + "9"); } }); button0.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { crunchifyEditText.setText(cru nchifyEditText.getText() + "0"); } }); buttonAdd.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (crunchifyEditText == null) { crunchifyEditText.setText(""); } else {
public void onClick(View v) { mValueOne = Float.parseFloat(crunchifyEditText.getText() + ""); crunchifyDivision = true; crunchifyEditText.setText(null); } }); buttonEqual.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { mValueTwo = Float.parseFloat(crunchifyEditText.getText() + ""); if (crunchifyAddition == true) { crunchifyEditText.setText(mValueOne + mValueTwo + ""); crunchifyAddition = false; } if (mSubtract == true) { crunchifyEditText.setText(mValueOne - mValueTwo + ""); mSubtract = false; } if (crunchifyMultiplication == true) { crunchifyEditText.setText(mValueOne * mValueTwo + ""); crunchifyMultiplication = false; } if (crunchifyDivision == true) { crunchifyEditText.setText(mValueOne / mValueTwo + ""); crunchifyDivision = false; }
buttonC.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { crunchifyEditText.setText(""); } }); button10.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { crunchifyEditText.setText(crunchifyEditText.getText() + "."); } }); } }
Xml CODE: android:layout_width="wrap_cont ent" android:layout_height="wrap_co ntent" android:layout_alignTop="@+id/ button1" android:layout_toStartOf="@+id/ button3" android:layout_toLeftOf="@+id/b utton3" android:backgroundTint="#8F0E 0E" android:text="2" />
style="?android:attr/buttonStyleSm all" android:layout_width="wrap_conte nt" android:layout_height="wrap_content" android:layout_below="@+id/button1" android:layout_toLeftOf="@+id/button2" android:text="4" />
android:layout_marginLeft=" dp" android:layout_toRightOf="@+ id/button3" android:text="+" />
on8" android:layout_alignLeft="@+id/butto n8" android:text="0" />
android:layout_alignRight="@+id/button mul" android:text="/" />
AS Window:
