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Editorial Team
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Asked: 2026-05-26T14:31:07+00:00

To apply left to right scale toa button i have used the following code.

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To apply left to right scale toa button i have used the following code. My button is in the right of layout. I want the button should start from its right X position and scale to left X position how to achieve this?

view.startAnimation(new ScaleAnimation(0.0f, 1.0f, 1.0f, 1.0f));
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1 Answer

  1. Editorial Team

    You need to set the starting point to the middle right, you also need to set the duration of the animation like this:

    ScaleAnimation anim = new ScaleAnimation(0.0f, 1.0f, 1.0f, 1.0f, Animation.RELATIVE_TO_SELF,1.0f, Animation.RELATIVE_TO_SELF, 0.5f);
anim.setDuration(700);
view.startAnimation(anim);

    in your case the Y start location is not important.

    if you don’t get it read about this constructor:

    public ScaleAnimation (float fromX, float toX, float fromY, float toY, int pivotXType, float pivotXValue, int pivotYType, float
    pivotYValue)

    Since: API Level 1

    Constructor to use when building a ScaleAnimation from code

    Parameters:

    fromX: Horizontal scaling factor to apply at the start of the animation

    toX: Horizontal scaling factor to apply at the end of the animation

    fromY: Vertical scaling factor to apply at the start of the animation

    toY: Vertical scaling factor to apply at the end of the animation

    pivotXType: Specifies how pivotXValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or
    Animation.RELATIVE_TO_PARENT.

    pivotXValue: The X coordinate of the point about which the object is being scaled, specified as an absolute number where 0 is the left
    edge. (This point remains fixed while the object changes size.) This
    value can either be an absolute number if pivotXType is ABSOLUTE, or a
    percentage (where 1.0 is 100%) otherwise.

    pivotYType: Specifies how pivotYValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or
    Animation.RELATIVE_TO_PARENT.

    pivotYValue: The Y coordinate of the point about which the object is being scaled, specified as an absolute number where 0 is the top
    edge. (This point remains fixed while the object changes size.) This
    value can either be an absolute number if pivotYType is ABSOLUTE, or a
    percentage (where 1.0 is 100%) otherwise.

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