18-03-2018

MainActivity.java

package nabil.monjeuquiz.com.calculator;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    Button btnAdd,btnDiff,btnDiv,btnProd;

    EditText N1,N2;
    float res;
    float L ;
    TextView RESULT;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

      /* btnDiff = (Button)findViewById(R.id.BTLSUB);
        btnProd = (Button)findViewById(R.id.BTLX);
       btnAdd = (Button)findViewById(R.id.BTLADD);
        btnDiv = (Button)findViewById(R.id.BTLDIV);
*/
        N1 = (EditText)findViewById(R.id.PREMIERVALEUR);
        N2 = (EditText)findViewById(R.id.DEUXIEMVALEUR);
        RESULT =(TextView)findViewById(R.id.RESULTAT);




/*
        btnAdd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                int R =  Integer.parseInt(N1.getText().toString());
                int L =  Integer.parseInt(N2.getText().toString());
                RESULT.setText(R+L+"");
            }
        });
*/

      /*  btnProd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                int R =  Integer.parseInt(N1.getText().toString());
                int L =  Integer.parseInt(N2.getText().toString());
                RESULT.setText(R*L+"");
            }
        });
        btnDiv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                int R =  Integer.parseInt(N1.getText().toString());
                int L =  Integer.parseInt(N2.getText().toString());
                RESULT.setText(R/L+"");
            }
        });

        btnDiff.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                int R =  Integer.parseInt(N1.getText().toString());
                int L =  Integer.parseInt(N2.getText().toString());
                RESULT.setText(R-L+"");
            }
        });
*/    }

    @Override
    public void onClick(View v) {

        switch (v.getId()){
            case R.id.BTLSUB :
               res=  Float.parseFloat(N1.getText().toString());
                L=  Float.parseFloat(N1.getText().toString());
                RESULT.setText(res-L+"");
                break;
            case R.id.BTLX :
                res=  Float.parseFloat(N1.getText().toString());
                L=  Float.parseFloat(N1.getText().toString());
                RESULT.setText(res*L+"");
                break;
            case R.id.BTLDIV :
                res=  Float.parseFloat(N1.getText().toString());
                L=  Float.parseFloat(N1.getText().toString());
                RESULT.setText(res/L+"");
                break;
            case R.id.BTLADD :
                res=  Float.parseFloat(N1.getText().toString());
                L=  Float.parseFloat(N1.getText().toString());
                RESULT.setText(res+L+"");
                break;
        }

}}

MainActivity.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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"
    tools:context="nabil.monjeuquiz.com.calculator.MainActivity">

    <EditText
        android:id="@+id/DEUXIEMVALEUR"
        android:layout_width="wrap_content"
        android:layout_height="43dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="Name"
        tools:layout_editor_absoluteX="85dp"
        tools:layout_editor_absoluteY="85dp" />

    <TextView
        android:id="@+id/RESULTAT"
        android:layout_width="310dp"
        android:layout_height="63dp"
        android:text="TextView"
        tools:layout_editor_absoluteX="41dp"
        tools:layout_editor_absoluteY="174dp" />

    <EditText
        android:id="@+id/PREMIERVALEUR"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="Name"
        tools:layout_editor_absoluteX="84dp"
        tools:layout_editor_absoluteY="31dp" />

    <Button
        android:id="@+id/BTLADD"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="+"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="304dp" />

    <Button
        android:id="@+id/BTLSUB"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="-"
        tools:layout_editor_absoluteX="104dp"
        tools:layout_editor_absoluteY="304dp" />

    <Button
        android:id="@+id/BTLX"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="x"
        tools:layout_editor_absoluteX="192dp"
        tools:layout_editor_absoluteY="304dp" />

    <Button
        android:id="@+id/BTLDIV"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="/"
        tools:layout_editor_absoluteX="280dp"
        tools:layout_editor_absoluteY="304dp" />
</android.support.constraint.ConstraintLayout>