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VancedManager
mirror of https://github.com/YTVanced/VancedManager
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Code Issues Projects Releases Wiki Activity

fixed viewpager navigation on RTL layout

This commit is contained in:
X1nto 2021-03-07 15:20:19 +04:00
parent 6c506c989c
commit 85e2d0c5c2
1 changed files with 22 additions and 20 deletions
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42
app/src/main/java/com/vanced/manager/ui/WelcomeActivity.kt
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@ -1,10 +1,10 @@
package com.vanced.manager.ui
import android.animation.Animator
import android.animation.ValueAnimator
import android.os.Bundle
import android.view.animation.AccelerateDecelerateInterpolator
import android.util.LayoutDirection
import androidx.appcompat.app.AppCompatActivity
import androidx.core.animation.addListener
import androidx.viewpager2.widget.ViewPager2
import com.vanced.manager.adapter.WelcomePageAdapter
import com.vanced.manager.databinding.ActivityWelcomeBinding
@ -12,21 +12,22 @@ import kotlin.math.abs
class WelcomeActivity : AppCompatActivity() {
private lateinit var viewPager2: ViewPager2
private lateinit var binding: ActivityWelcomeBinding
private var isRtl = false
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityWelcomeBinding.inflate(layoutInflater)
setContentView(binding.root)
viewPager2 = binding.welcomeViewpager
viewPager2.apply {
isRtl = resources.configuration.layoutDirection == LayoutDirection.RTL
binding.welcomeViewpager.apply {
adapter = WelcomePageAdapter(this@WelcomeActivity)
isUserInputEnabled = false
setPageTransformer { page, position ->
page.apply {
val pageWidth = width
val pageWidth = width.toFloat()
//Thank you, fragula dev!
when {
position > 0 && position < 1 -> {
@ -35,7 +36,7 @@ class WelcomeActivity : AppCompatActivity() {
}
position > -1 && position <= 0 -> {
alpha = 1.0f - abs(position * 0.7f)
translationX = -pageWidth * position / 1.3F
translationX = pageWidth.rtlCompat * position / 1.3F
}
}
}
@ -44,17 +45,21 @@ class WelcomeActivity : AppCompatActivity() {
}
override fun onBackPressed() {
if (viewPager2.currentItem == 0) {
super.onBackPressed()
} else {
navigateTo(viewPager2.currentItem - 1)
with (binding) {
if (welcomeViewpager.currentItem == 0) {
super.onBackPressed()
} else {
navigateTo(welcomeViewpager.currentItem - 1)
}
}
}
fun navigateTo(position: Int) {
viewPager2.currentPosition = position
binding.welcomeViewpager.currentPosition = position
}
private val Float.rtlCompat get() = if (isRtl) this else -this
//Shit way to implement animation duration, but at least it works
private var ViewPager2.currentPosition: Int
get() = currentItem
@ -66,16 +71,13 @@ class WelcomeActivity : AppCompatActivity() {
addUpdateListener { valueAnimator ->
val currentValue = valueAnimator.animatedValue as Int
val currentPxToDrag = (currentValue - previousValue).toFloat()
fakeDragBy(-currentPxToDrag)
fakeDragBy(currentPxToDrag.rtlCompat)
previousValue = currentValue
}
addListener(object : Animator.AnimatorListener {
override fun onAnimationStart(animation: Animator?) { beginFakeDrag() }
override fun onAnimationEnd(animation: Animator?) { endFakeDrag() }
override fun onAnimationCancel(animation: Animator?) {}
override fun onAnimationRepeat(animation: Animator?) {}
})
interpolator = AccelerateDecelerateInterpolator()
addListener(
onStart = { beginFakeDrag() },
onEnd = { endFakeDrag() }
)
duration = 500
start()
}