Implemantasyon
04.08.2017 - 11:42
Bu koddaki OnClickListenerları daha kısa bir şekilde implement etmek istiyorum yani kodun kısalmasını isitiyorum.Bunu interface ile nasıl yapabilirim?
MainActivity.class
package com.example.tckcakar.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity implements OnClickListener {
private float ilkdeger=0;
private double sonuc=0;
private String islem;
public MainActivity() {
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final TextView txt= (TextView) findViewById(R.id.txt);
Button c= (Button) findViewById(R.id.sil);
Button btn0= (Button) findViewById(R.id.buton0);
Button btn1= (Button) findViewById(R.id.buton1);
Button btn2= (Button) findViewById(R.id.buton2);
Button btn3= (Button) findViewById(R.id.buton3);
Button btn4= (Button) findViewById(R.id.buton4);
Button btn5= (Button) findViewById(R.id.buton5);
Button btn6= (Button) findViewById(R.id.buton6);
Button btn7= (Button) findViewById(R.id.buton7);
Button btn8= (Button) findViewById(R.id.buton8);
Button btn9= (Button) findViewById(R.id.buton9);
final Button topla= (Button) findViewById(R.id.topla);
Button çıkar= (Button) findViewById(R.id.çıkar);
Button çarp= (Button) findViewById(R.id.çarpma);
Button böl= (Button) findViewById(R.id.bölme);
final Button sonuç= (Button) findViewById(R.id.Sonuç);
btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "1");
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText().toString()+ "2");
}
});
btn3.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "3");
}
});
btn4.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "4");
}
});
btn5.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "1");
}
});
btn6.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "6");
}
});
btn7.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "7");
}
});
btn8.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "8");
}
});
btn9.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "9");
}
});
btn0.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(txt.getText()+ "0");
}
});
try {c.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
ilkdeger=0;
sonuc=0;
txt.setText("");
}
});
}
catch (Exception C){
}
try {topla.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
if(!txt.getText().toString().isEmpty()){
ilkdeger= Float.parseFloat(txt.getText().toString());
txt.setText("");
islem="Toplama";
}
}
});
}
catch (Exception C){
}
try {çıkar.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
if(!txt.getText().toString().isEmpty()){
ilkdeger= Float.parseFloat(txt.getText().toString());
txt.setText("");
islem="Çıkarma";
}
}
});
}
catch (Exception C){
}
try {çarp.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
if(!txt.getText().toString().isEmpty()){
ilkdeger= Float.parseFloat(txt.getText().toString());
txt.setText("");
islem="Çarpma";
}
}
});
}
catch (Exception C){
}
try {böl.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
if(!txt.getText().toString().isEmpty()){
ilkdeger= Float.parseFloat(txt.getText().toString());
txt.setText("");
islem="Bölme";
}
}
});
}
catch (Exception C){
}
sonuç.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
if(!txt.getText().toString().isEmpty() && !String.valueOf(ilkdeger).equals("0")){
if(islem.equals("Toplama")){
sonuc= ilkdeger + Float.parseFloat(txt.getText().toString());
}
else if(islem.equals("Çıkarma")) {
sonuc = ilkdeger - Float.parseFloat(txt.getText().toString());
}
else if(islem.equals("Çarpma")){
sonuc= ilkdeger * Float.parseFloat(txt.getText().toString());
}
else if(islem.equals("Bölme")) {
sonuc = ilkdeger / Float.parseFloat(txt.getText().toString());
}
txt.setText(String.valueOf(sonuc));
ilkdeger=0;
sonuc=0;
}
else{
txt.setText("Değer giriniz");
}
if (R.id.sil == view.getId()
) {
ilkdeger=0;
sonuc=0;
txt.setText("");
}
}
});}
@Override
public void onClick(View view) {
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.tckcakar.myapplication.MainActivity">
<TextView
android:id="@+id/txt"
android:layout_width="167dp"
android:layout_height="44dp"
android:layout_alignParentTop="true"
android:layout_alignStart="@+id/linear1"
android:layout_marginTop="53dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.073"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.034" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:id="@+id/linear1"
android:layout_below="@+id/txt"
android:layout_alignParentEnd="true"
android:layout_marginTop="11dp">
<Button
android:id="@+id/buton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
android:text="1" />
<Button
android:id="@+id/buton2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="2"
/>
<Button
android:id="@+id/buton3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
android:text="3" />
<Button
android:id="@+id/sil"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="C" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:id="@+id/linear2"
android:layout_alignTop="@+id/linear1"
android:layout_alignParentStart="true"
android:layout_marginTop="53dp">
<Button
android:id="@+id/buton4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="4"
/>
<Button
android:id="@+id/buton5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
android:text="5"
/>
<Button
android:id="@+id/buton6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="6"
/>
<Button
android:id="@+id/topla"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
android:text="+" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:id="@+id/linear3"
android:layout_alignTop="@+id/linear2"
android:layout_alignParentStart="true"
android:layout_marginTop="53dp">
<Button
android:id="@+id/buton7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
android:text="7"
/>
<Button
android:id="@+id/buton8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="8"
/>
<Button
android:id="@+id/buton9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
android:text="9"
/>
<Button
android:id="@+id/çıkar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="-" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:id="@+id/linear4"
android:layout_alignTop="@+id/linear3"
android:layout_marginTop="53dp">
<Button
android:id="@+id/buton0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="0"
/>
<Button
android:id="@+id/bölme"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
android:text="/" />
<Button
android:id="@+id/çarpma"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:text="*" />
<Button
android:id="@+id/Sonuç"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
android:text="=" />
</LinearLayout>
</RelativeLayout>
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