Parpiyev Islombek Mavzu: Android Studio muhitida menyular va dialog oynalar bilan ishlash

Diolog menyular va ulardan foydalanish.
Fragment klassi o'z hayot sikli bilan barcha standart fragment funktsiyalarini o'z ichiga oladi, ammo DialogFragment sinfidan meros bo'lib o'tadi, bu esa qo'shimcha funktsiyalarni qo'shadi. Va uni yaratish uchun biz ikkita usuldan foydalanishimiz mumkin:

• 
  Dialog ob'ektini qaytaradigan onCreateDialog() metodini bekor qilish.
  
• 
  Standart onCreateView() metodidan foydalanish.
  

OnCreateDialog() metodi dialog oynasini yaratish uchun AlertDialog.Builder sinfidan foydalanadi. Uning metodlaridan foydalanib, siz dialog oynasining ko'rinishini sozlashingiz mumkin:

• 
  setTitle: oynaning sarlavhasini o'rnatadi.
  
• 
  setView: oyna interfeysi layout-ini o'rnatadi.
  
• 
  setIcon: oyna ikonkasini o'rnatadi.
  
• 
  setPositiveButton: amalni tasdiqlash tugmachasini o'rnatadi.
  
• 
  setNeutralButton: tasdiqlash yoki bekor qilishdan farq qilishi mumkin bo'lgan "neytral" tugmachani o'rnatadi.
  
• 
  setNegativeButton: bekor qilish tugmachasini o'rnatadi.
  
• 
  setMessage: dialog oynasining matnini o'rnatadi, lekin setView-dan foydalanishda bu usul ixtiyoriy yoki agar biz shunchaki xabarni ko'rsatishni xohlasak, uni alternativ deb hisoblashimiz mumkin.
  
• 
  create: oyna yaratadi.
  

Bizni kodda, dialog oynasida faqat xabar ko'rsatiladi.
Dialog oynasini chaqirish uchun activity_main.xml faylida tugmachani qo'shing:

xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="showDialog"
android:text="Dialog"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />

MainActivity kodida dialog oynasini ishga tushiradigan tugmacha uchun metodni aniqlang:
package com.example.android.dialogfragment;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void showDialog(View v) {
CustomDialogFragment dialog = new CustomDialogFragment();
dialog.show(getSupportFragmentManager(), "custom");
}
}
Dialog oynasini chaqirish uchun CustomDialogFragment fragment ob'ekti yaratiladi, so'ngra unga show() metodi chaqiriladi. Ushbu metodga FragmentManager va teg parametr sifatida beriladi.
Ilovani ishga tushirib natijani ko'ramiz:

Dialog oynasini biroz sozlaymiz(o'zgartiramiz). Bu uchun CustomDialogFragment sinfidagi onCreateDialog metodini quyidagicha o'zgartiring:
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
return builder
.setTitle("Muloqot oynasi")
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage("Oynani yopish uchun OK tugmasini bosing")
.setPositiveButton("OK", null)
.setNegativeButton("Bekor qilish", null)
.create();
}
Bu kodda biz android.R.drawable.ic_dialog_alert resursini rasm sifatida ishlatadigan va ikkita tugmachani o'rnatadigan layoutni qo'shamiz.
Ilovani ishga tushiramiz.

Endi res/layout papkasiga yangi dialog.xml faylini qo'shing:

xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="OMUC"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />

Endi dialog oynasini o'zgartiring. Bu uchun CustomDialogFragment sinfidagi onCreateDialog metodini quyidagicha o'zgartiamiz:
package com.example.android.dialogfragment;
import android.app.AlertDialog;
import android.app.Dialog;
import android.os.Build;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.fragment.app.DialogFragment;


public class CustomDialogFragment extends DialogFragment {
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@NonNull
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
return builder
.setTitle("Muloqot oynasi")
setIcon(android.R.drawable.ic_dialog_alert)
.setView(R.layout.dialog)
.setPositiveButton("OK", null)
.setNegativeButton("Bekor qilish", null)
.create();
}
}
SetView() metodi avval qo'shilgan layout dialog.xml resursini oyna interfeysi sifatida o'rnatadi. Endi yana ilovani ishga tushiring va natijani ko'ring:



Xulosa.
Men ushbu labaratoriyani bajarish mobaynida Android Studio muhitidan foydalanish bilimlarimni oshirib oldim. Bu labaratoriya ishida Android Studioda menyu yaratish., Android Studioda NavigotionMenu va ContextMenudan foydalanish, Android Studioda Dialog menyular va ulardan foydalanishni ko’rib chiqdim va bulardan amaliyotda foydalandim.