Android Checkbox Kullanimi

Merhaba bu yazimda bir android uygulamasinda checkbox kullanimini gorecegiz. Bunun icin kucuk bir ornek yapacagim.

Kullanicinin daha once yasadigi sehirleri secmesini istedigim ve daha sonra butona bastiginda bu sehirleri gosteren bir uygulama yapalim.

Bunun icin oncelikle android projemizi olusturalim. Herhangi bir izne gerek duymuyor uygulamamiz.

activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout 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" android:orientation="vertical" tools:context="com.example.gamze.checkboxex01.MainActivity"> <TextView android:id="@+id/msg" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/text1"/> <LinearLayout android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content"> <LinearLayout android:layout_weight="1" android:layout_width="0dp" android:layout_height="wrap_content" android:orientation="vertical"> <CheckBox android:id="@+id/checkbox1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Istanbul" android:checked="false"/> <CheckBox android:id="@+id/checkbox2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Ankara" android:checked="false"/> <CheckBox android:id="@+id/checkbox3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Izmir" android:checked="false"/> </LinearLayout> <LinearLayout android:layout_weight="1" android:layout_width="0dp" android:layout_height="wrap_content" android:orientation="vertical"> <CheckBox android:id="@+id/checkbox4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Antalya" android:checked="false"/> <CheckBox android:id="@+id/checkbox5" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Canakkale" android:checked="false"/> <CheckBox android:id="@+id/checkbox6" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Mugla" android:checked="false"/> </LinearLayout> </LinearLayout> <Button android:id="@+id/gonderBtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/btnName1"/> </LinearLayout>

Bu arada bazi stringleri res -> values -> strings.xml doyasindan aldim denemek icin. Sizde oyle yapabilirsiniz.

<resources> <string name="app_name">CheckBoxEx01</string> <string name="btnName1">GONDER</string> <string name="text1">Hangi sehirleri gezdiniz ?</string> </resources>

Simdi de MainActivity.java ya bakalim.

package com.example.gamze.checkboxex01; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.Toast; public class MainActivity extends AppCompatActivity { private CheckBox checkBox1, checkBox2, checkBox3, checkBox4, checkBox5, checkBox6; private Button btnGonder; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); checkBox1 = (CheckBox) findViewById(R.id.checkbox1); checkBox2 = (CheckBox) findViewById(R.id.checkbox2); checkBox3 = (CheckBox) findViewById(R.id.checkbox3); checkBox4 = (CheckBox) findViewById(R.id.checkbox4); checkBox5 = (CheckBox) findViewById(R.id.checkbox5); checkBox6 = (CheckBox) findViewById(R.id.checkbox6); btnGonder = (Button) findViewById(R.id.gonderBtn); checkBox1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton compoundButton, boolean b) { if(compoundButton.isChecked()) { Toast.makeText(MainActivity.this, checkBox1.getText(), Toast.LENGTH_SHORT).show(); } } }); btnGonder.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { String sehirler = "Gezdiginiz sehirler:"; if(checkBox1.isChecked()){ sehirler+=" "+ checkBox1.getText().toString(); }if(checkBox2.isChecked()){ sehirler+=" "+ checkBox2.getText().toString(); }if(checkBox3.isChecked()){ sehirler+=" "+ checkBox3.getText().toString(); }if(checkBox4.isChecked()){ sehirler+=" "+ checkBox4.getText().toString(); }if(checkBox5.isChecked()){ sehirler+=" "+ checkBox5.getText().toString(); }if(checkBox6.isChecked()){ sehirler+=" "+ checkBox6.getText().toString(); } Toast.makeText(MainActivity.this, sehirler, Toast.LENGTH_LONG).show(); } }); } }




Ekran Goruntulerimiz alttaki gibidir.