Yuito-app-android/app/src/main/java/com/keylesspalace/tusky/pager/ImagePagerAdapter.kt

34 lines
1010 B
Kotlin

package com.keylesspalace.tusky.pager
import android.support.v4.app.Fragment
import android.support.v4.app.FragmentManager
import android.support.v4.app.FragmentStatePagerAdapter
import com.keylesspalace.tusky.entity.Attachment
import com.keylesspalace.tusky.fragment.ViewMediaFragment
import java.util.Locale
class ImagePagerAdapter(
fragmentManager: FragmentManager,
private val attachments: List<Attachment>,
private val initialPosition: Int
) : FragmentStatePagerAdapter(fragmentManager) {
override fun getItem(position: Int): Fragment? {
return if (position >= 0 && position < attachments.size) {
ViewMediaFragment.newInstance(attachments[position], position == initialPosition)
} else {
null
}
}
override fun getCount(): Int {
return attachments.size
}
override fun getPageTitle(position: Int): CharSequence {
return String.format(Locale.getDefault(), "%d/%d", position + 1, attachments.size)
}
}