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CameraFragment with some gestures and animations
package eram.ir.camerapager
import android.os.Bundle
import android.support.v4.app.Fragment
import kotlinx.android.synthetic.main.camera_fragment.*
import android.view.*
import android.widget.FrameLayout
import android.animation.ValueAnimator
import android.content.res.Resources
import android.view.animation.DecelerateInterpolator
import android.util.DisplayMetrics
import android.util.TypedValue
import com.otaliastudios.cameraview.Facing
class CameraFragment : Fragment() {
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
return LayoutInflater.from(context).inflate(R.layout.camera_fragment, container, false)
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
val viewPager = view.parent as CViewPager
viewPager.setOnExitListener(object : CViewPager.ExitListener {
override fun onExit() {
(viewPager).enabledScroll = true
viewPager.setCurrentItem(1, true)
val margin = dpToPx(100f).toInt()
val parentWidth = parent.measuredWidth - margin
val widthAnimator = ValueAnimator.ofInt(cv.width, parentWidth)
widthAnimator.duration = 700
widthAnimator.interpolator = DecelerateInterpolator()
widthAnimator.addUpdateListener { animation ->
cv.layoutParams.width = animation.animatedValue as Int
cv.layoutParams.height = FrameLayout.LayoutParams.WRAP_CONTENT
cv.requestLayout()
}
val scaleAnimator = ValueAnimator.ofFloat(viewPager.scaleX, 1f)
scaleAnimator.duration = 400
scaleAnimator.interpolator = DecelerateInterpolator()
scaleAnimator.addUpdateListener { animation ->
viewPager.scaleX = animation.animatedValue as Float
viewPager.scaleY = animation.animatedValue as Float
}
widthAnimator.start()
scaleAnimator.start()
}
})
camera.setOnTouchListener { _, event ->
if (event.action == MotionEvent.ACTION_UP) {
(viewPager).enabledScroll = false
viewPager.setCurrentItem(1, true)
val parentWidth = parent.measuredWidth
val widthAnimator = ValueAnimator.ofInt(cv.width, parentWidth)
widthAnimator.duration = 700
widthAnimator.interpolator = DecelerateInterpolator()
widthAnimator.addUpdateListener { animation ->
cv.layoutParams.width = animation.animatedValue as Int
cv.layoutParams.height = animation.animatedValue as Int
cv.requestLayout()
}
val scaleAnimator = ValueAnimator.ofFloat(viewPager.scaleX, 1.5f)
scaleAnimator.duration = 400
scaleAnimator.interpolator = DecelerateInterpolator()
scaleAnimator.addUpdateListener { animation ->
viewPager.scaleX = animation.animatedValue as Float
viewPager.scaleY = animation.animatedValue as Float
}
widthAnimator.start()
scaleAnimator.start()
true
} else
// cv.layoutParams= FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,FrameLayout.LayoutParams.MATCH_PARENT)
false
}
}
override fun onResume() {
super.onResume()
camera.facing = Facing.BACK
camera.start()
}
override fun onPause() {
camera.stop()
super.onPause()
}
override fun onDestroyView() {
super.onDestroyView()
camera.destroy()
}
fun dpToPx(dp: Float): Float {
return (dp * Resources.getSystem().getDisplayMetrics().density);
}
}
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