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anonymous /FromColorToColor.java
Created Dec 30, 2016

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Flashy android animations
package org.toilelibre.libe.athg2sms.androidstuff.interactions;
import android.animation.ArgbEvaluator;
import android.animation.ValueAnimator;
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.os.Build;
import android.support.v4.content.ContextCompat;
import android.view.View;
public class FromColorToColor {
public static void animate(final Context context, final View view, final int startColorId, final int EndColorId) {
final int nbSteps = 100;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
ValueAnimator colorAnimation = ValueAnimator.ofObject(new ArgbEvaluator(), 0, nbSteps);
colorAnimation.setDuration(3000);
colorAnimation.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animator) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
final int value = (Integer)animator.getAnimatedValue();
final int oldColor = ContextCompat.getColor(context, startColorId);
final int targetColor = ContextCompat.getColor(context, EndColorId);
final int decreasing = nbSteps - value;
final int currentColor = Color.argb(255, Color.red(oldColor) * decreasing / nbSteps + Color.red(targetColor) * value / nbSteps,
Color.green(oldColor) * decreasing / nbSteps + Color.green(targetColor) * value / nbSteps,
Color.blue(oldColor) * decreasing / nbSteps + Color.blue(targetColor) * value / nbSteps);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
view.setBackgroundTintList(ColorStateList.valueOf(currentColor));
}else {
view.setBackgroundColor(currentColor);
}
}
}
});
colorAnimation.start();
}
}
}
package org.toilelibre.libe.athg2sms.androidstuff.materialdesign;
import android.os.Build;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.view.animation.FastOutSlowInInterpolator;
import android.view.ViewGroup;
import org.toilelibre.libe.athg2sms.R;
public class OnPageListener implements ViewPager.OnPageChangeListener {
private final ViewPager viewPager;
private final ViewGroup viewGroup;
private int screen = 0;
public OnPageListener(ViewPager viewPager, ViewGroup viewGroup) {
this.viewPager = viewPager;
this.viewGroup = viewGroup;
}
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
if (screen == 0) {
FloatingActionButton startButton = (FloatingActionButton) viewGroup.findViewById(R.id.start);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
startButton.setX(viewPager.getWidth() + viewPager.getScrollX() - 140);
}
}
if (screen == 1) {
FloatingActionButton exportButton = (FloatingActionButton) viewGroup.findViewById(R.id.exportfile);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
exportButton.setX(viewPager.getWidth() / 4 + viewPager.getScrollX() / 3 - 140);
}
}
if (screen == 2) {
FloatingActionButton addOneButton = (FloatingActionButton) viewGroup.findViewById(R.id.addone);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
addOneButton.setY((int) (viewPager.getHeight() - ((viewPager.getScrollX() - viewPager.getWidth()) * 1.0 / viewPager.getWidth() * 400 - 260)));
}
}
}
@Override
public void onPageSelected(int position) {
screen = position;
FloatingActionButton startButton = (FloatingActionButton) viewPager.findViewById(R.id.start);
if (screen == 0) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
startButton.setScaleX(0);
startButton.setScaleY(0);
}
ViewCompat.animate(startButton).scaleX(1).scaleY(1).alpha(1.0F)
.setInterpolator(new FastOutSlowInInterpolator()).withLayer().setStartDelay(100).start();
} else {
if (startButton != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
startButton.setScaleX(0);
startButton.setScaleY(0);
}
}
}
@Override
public void onPageScrollStateChanged(int state) {
}
}
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