package com.hp.dewi.dewi_calculator;

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

public class MainActivity extends AppCompatActivity {

    Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b0,badd,bsub,bmul,bdiv,bdot,bequal,btnclear;
    TextView ans;
    double bil1,bil2;
    boolean add,sub,mul,div;

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

        b1= (Button) findViewById(R.id.btn1);
        b2= (Button) findViewById(R.id.btn2);
        b3= (Button) findViewById(R.id.btn3);
        b4= (Button) findViewById(R.id.btn4);
        b5= (Button) findViewById(R.id.btn5);
        b6= (Button) findViewById(R.id.btn6);
        b7= (Button) findViewById(R.id.btn7);
        b8= (Button) findViewById(R.id.btn8);
        b9= (Button) findViewById(R.id.btn9);
        b0= (Button) findViewById(R.id.btn0);
        badd= (Button) findViewById(R.id.btnadd);
        bsub= (Button) findViewById(R.id.btnsub);
        bmul= (Button) findViewById(R.id.btnmul);
        bdiv= (Button) findViewById(R.id.btndiv);
        bdot= (Button) findViewById(R.id.btndot);
        bequal = (Button) findViewById(R.id.btnequal) ;
        btnclear = (Button) findViewById(R.id.btnclear);

        ans = (TextView) findViewById(R.id.Answer);

        b1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"1");
            }
        });
        b2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"2");
            }
        });
        b3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"3");
            }
        });
        b4.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"4");
            }
        });
        b5.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"5");
            }
        });
        b6.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"6");
            }
        });
        b7.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"7");
            }
        });
        b8.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"8");
            }
        });
        b9.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"9");
            }
        });
        b0.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+"0");
            }
        });
        bdot.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText(ans.getText()+".");
            }
        });
        btnclear.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ans.setText("");
            }
        });
        badd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                bil1=Double.parseDouble(ans.getText()+"");
                add=true;
                ans.setText(null);

            }
        });
        bsub.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                bil1=Double.parseDouble(ans.getText()+"");
                sub=true;
                ans.setText(null);
            }
        });
        bmul.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                bil1=Double.parseDouble(ans.getText()+"");
                mul=true;
                ans.setText(null);
            }
        });
        bdiv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                bil1=Double.parseDouble(ans.getText()+"");
                div=true;
                ans.setText(null);
            }
        });
        bequal.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                bil2 =  Double.parseDouble(ans.getText()+"");
                if(add==true)
                {
                    ans.setText(bil1+bil2+"");
                    add=false;
                }
                if(sub==true)
                {
                    ans.setText(bil1-bil2+"");
                    sub=false;
                }
                if(mul==true)
                {
                    ans.setText(bil1*bil2+"");
                    mul=false;
                }
                if(div==true)
                {
                    ans.setText(bil1/bil2+"");
                    div=false;
                }
            }
        });

    }
}