Notes

-----Sembollü Hesap Makinesi Yapımı ----------------------
Resim ekleme :
1-İCONFİNDER.COM DAN RESİM BUL
2-APP-RES-DRAWABLE İÇİNE AT GİTSİN
---MAİN ACTİVİTY-YAPILACAK İŞLER
package com.example.user.menuluhesapmak;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

EditText sayi1,sayi2;
TextView sonuc;

int s1,s2,sonucu;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

sayi1 = findViewById(R.id.sayi1);
sayi2 = findViewById(R.id.sayi2);
sonuc = findViewById(R.id.sonuc);
--ÇIKIŞ BUTONU KODU BU --
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

s1 = Integer.parseInt(sayi1.getText().toString());
s2 = Integer.parseInt(sayi2.getText().toString());


//noinspection SimplifiableIfStatement
if (id == R.id.topla) {

sonucu = s1+s2;

sonuc.setText(""+sonucu);
return true;
}
else if (id == R.id.cikar) {
sonucu = s1-s2;

sonuc.setText(""+sonucu);
return true;
}
else if (id == R.id.carp) {
sonucu = s1*s2;

sonuc.setText(""+sonucu);
return true;
}
else if (id == R.id.bol) {
sonucu = s1/s2;

sonuc.setText(""+sonucu);
return true;
}
else if (id == R.id.cikis) {
sayi1.setText(null);
sayi2.setText(null);
sonuc.setText(null);
return true;
}




return super.onOptionsItemSelected(item);
}
}
---MENU MAİN XML(MENUNUN SADE TASARIMI )
<menu 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"
tools:context="com.example.user.menuluhesapmak.MainActivity">


<item
android:id="@+id/topla"
android:orderInCategory="100"
android:title="Toplama"
app:showAsAction="always"//BUNU SİLERSEN ALT ALTA İNER
android:icon="@drawable/top"
/>

<item
android:id="@+id/cikar"
android:orderInCategory="100"
android:title="Çıkarma"
app:showAsAction="always"
android:icon="@drawable/ic_remove_black_24dp"
/>

<item
android:id="@+id/carp"
android:orderInCategory="100"
android:title="Çarpma"
app:showAsAction="always"
android:icon="@drawable/ic_clear_black_24dp"
/>

<item
android:id="@+id/bol"
android:orderInCategory="100"
android:title="Bölme"
app:showAsAction="always"
android:icon="@drawable/ic_done_black_24dp"
/>
<item
android:id="@+id/cikis"
android:orderInCategory="100"
android:title="Çıkış"
app:showAsAction="always"
android:icon="@drawable/ic_exit_to_app_black_24dp"
/>

</menu>


----CONTEXT MAİN
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context=".MainActivity"
tools:showIn="@layout/activity_main">

<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">

<EditText
android:id="@+id/sayi1"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginLeft="50dp"
android:layout_marginTop="20dp"
android:hint="Birinci Sayi"
android:inputType="number" />

<EditText
android:id="@+id/sayi2"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginLeft="50dp"
android:layout_marginTop="20dp"
android:hint="İkinci Sayi"
android:inputType="number" />

<TextView
android:id="@+id/sonuc"
android:layout_marginLeft="50dp"
android:layout_marginTop="20dp"
android:layout_width="300dp"
android:layout_height="wrap_content" />


</LinearLayout>

</RelativeLayout>
------------------------------------