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April 29, 2018 07:43
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Clock_SpinTransformation Animation in Viewpager
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package example.andrdoitechweb.viewpagertransformer.Transformation; | |
import android.support.v4.view.ViewPager; | |
import android.util.Log; | |
import android.view.View; | |
public class Clock_SpinTransformation implements ViewPager.PageTransformer { | |
@Override | |
public void transformPage(View page, float position) { | |
page.setTranslationX(-position * page.getWidth()); | |
if (Math.abs(position) <= 0.5) { | |
page.setVisibility(View.VISIBLE); | |
page.setScaleX(1 - Math.abs(position)); | |
page.setScaleY(1 - Math.abs(position)); | |
} else if (Math.abs(position) > 0.5) { | |
page.setVisibility(View.GONE); | |
} | |
if (position < -1){ // [-Infinity,-1) | |
// This page is way off-screen to the left. | |
page.setAlpha(0); | |
} | |
else if (position <= 0) { // [-1,0] | |
page.setAlpha(1); | |
page.setRotation(360 * Math.abs(position)); | |
} | |
else if (position <= 1) { // (0,1] | |
page.setAlpha(1); | |
page.setRotation(-360 * Math.abs(position)); | |
} | |
else { // (1,+Infinity] | |
// This page is way off-screen to the right. | |
page.setAlpha(0); | |
} | |
} | |
} |
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