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import android.animation.ValueAnimator; | |
import android.graphics.ColorMatrix; | |
import android.graphics.ColorMatrixColorFilter; | |
import android.view.animation.AccelerateDecelerateInterpolator; | |
import android.view.animation.Interpolator; | |
import android.widget.ImageView; | |
import java.lang.ref.SoftReference; | |
public class PhotographicPrintAnimator { | |
final SoftReference<ImageView> mView; | |
final ColorMatrix mColorMatrix; | |
final float[] mBrightness = new float[] | |
{ | |
1, 0, 0, 0, 0, | |
0, 1, 0, 0, 0, | |
0, 0, 1, 0, 0, | |
0, 0, 0, 1, 0 | |
}; | |
final ColorMatrix mBrightnessColorMatrix; | |
final Interpolator mInterpolator; | |
public PhotographicPrintAnimator(ImageView v) { | |
mView = new SoftReference<ImageView>(v); | |
mColorMatrix = new ColorMatrix(); | |
mBrightnessColorMatrix = new ColorMatrix(); | |
mInterpolator = new AccelerateDecelerateInterpolator(); | |
} | |
public void start(int duration) { | |
final ValueAnimator v = ValueAnimator.ofFloat(0f, 1f); | |
final ValueAnimator v2 = ValueAnimator.ofFloat(0f, 1f); | |
v.setInterpolator(mInterpolator); | |
v.setDuration(duration); | |
v.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { | |
@Override | |
public void onAnimationUpdate(ValueAnimator animation) { | |
mColorMatrix.setSaturation(animation.getAnimatedFraction()); | |
if (mView.get() != null) { | |
mView.get().setColorFilter(new ColorMatrixColorFilter(mColorMatrix)); | |
} else { | |
v.cancel(); | |
v2.cancel(); | |
} | |
} | |
}); | |
v2.setInterpolator(mInterpolator); | |
v2.setDuration((int) (duration * 0.75)); | |
v2.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { | |
@Override | |
public void onAnimationUpdate(ValueAnimator animation) { | |
float brightness = (1f - animation.getAnimatedFraction()) * 255; | |
mBrightness[4] = brightness; | |
mBrightness[9] = brightness; | |
mBrightness[14] = brightness; | |
mBrightnessColorMatrix.set(mBrightness); | |
mColorMatrix.postConcat(mBrightnessColorMatrix); | |
if (mView.get() != null) { | |
mView.get().setColorFilter(new ColorMatrixColorFilter(mColorMatrix)); | |
} else { | |
v.cancel(); | |
v2.cancel(); | |
} | |
} | |
}); | |
if (mView.get() != null) { | |
mView.get().setAlpha(0f); | |
mView.get().animate().alpha(1.0f).setDuration(duration / 2); | |
v.start(); | |
v2.start(); | |
} | |
} | |
} |
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