Androidda Activity ichida Fragment qo'shish va ko'rsatish qanday amalga oshiriladi?

Androidda Activity'ga Fragment qo'shish va ko'rsatish uchun odatda FragmentManager va fragment tranzaktsiyalari ishlatiladi.

Activity'ga Fragment qo'shish misoli:

// FragmentManager'ni oling
FragmentManager fragmentManager = getSupportFragmentManager();

// Fragment nusxasini yarating
MyFragment fragment = new MyFragment();

// Tranzaktsiyani boshlang
FragmentTransaction transaction = fragmentManager.beginTransaction();

// Fragmentni R.id.fragment_container identifikatoriga ega konteynerga qo'shing
transaction.add(R.id.fragment_container, fragment);

// Tranzaktsiyani tasdiqlang
transaction.commit();

Activity layout'ida, fragment qo'shiladigan konteyner bo'lishi kerak, masalan, id'si fragment_container bo'lgan FrameLayout, unga fragment qo'shiladi.

Fragmentni o'zgartirish uchun add o'rniga replace metodidan foydalaniladi. Shuningdek, tranzaktsiyani orqa yonga qo'shish mumkin, shunda orqa tugmani bosganda avvalgi holatga qaytish mumkin bo'ladi.