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ArgbEvaluator


android.animation

Class ArgbEvaluator

  • All Implemented Interfaces:
    TypeEvaluator


    public class ArgbEvaluator
    extends Object
    implements TypeEvaluator
    This evaluator can be used to perform type interpolation between integer values that represent ARGB colors.
    • Constructor Detail

      • ArgbEvaluator

        public ArgbEvaluator()
    • Method Detail

      • evaluate

        public Object evaluate(float fraction,
                      Object startValue,
                      Object endValue)
        This function returns the calculated in-between value for a color given integers that represent the start and end values in the four bytes of the 32-bit int. Each channel is separately linearly interpolated and the resulting calculated values are recombined into the return value.
        Specified by:
        evaluate in interface TypeEvaluator
        Parameters:
        fraction - The fraction from the starting to the ending values
        startValue - A 32-bit int value representing colors in the separate bytes of the parameter
        endValue - A 32-bit int value representing colors in the separate bytes of the parameter
        Returns:
        A value that is calculated to be the linearly interpolated result, derived by separating the start and end values into separate color channels and interpolating each one separately, recombining the resulting values in the same way.


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