Example usage for android.animation Keyframe setInterpolator

Introduction

In this page you can find the example usage for android.animation Keyframe setInterpolator.

Prototype

public void setInterpolator(TimeInterpolator interpolator) 

Source Link

Document

Sets the optional interpolator for this Keyframe.

Usage

From source file:android.support.graphics.drawable.AnimatorInflaterCompat.java

private static Keyframe loadKeyframe(Context context, Resources res, Theme theme, AttributeSet attrs,
        int valueType, XmlPullParser parser) throws XmlPullParserException, IOException {

    TypedArray a = TypedArrayUtils.obtainAttributes(res, theme, attrs, AndroidResources.STYLEABLE_KEYFRAME);

    Keyframe keyframe = null;

    float fraction = TypedArrayUtils.getNamedFloat(a, parser, "fraction",
            AndroidResources.STYLEABLE_KEYFRAME_FRACTION, -1);

    TypedValue keyframeValue = TypedArrayUtils.peekNamedValue(a, parser, "value",
            AndroidResources.STYLEABLE_KEYFRAME_VALUE);
    boolean hasValue = (keyframeValue != null);
    if (valueType == VALUE_TYPE_UNDEFINED) {
        // When no value type is provided, check whether it's a color type first.
        // If not, fall back to default value type (i.e. float type).
        if (hasValue && isColorType(keyframeValue.type)) {
            valueType = VALUE_TYPE_COLOR;
        } else {/* w  w w.  j a  v a2 s . com*/
            valueType = VALUE_TYPE_FLOAT;
        }
    }

    if (hasValue) {
        switch (valueType) {
        case VALUE_TYPE_FLOAT:
            float value = TypedArrayUtils.getNamedFloat(a, parser, "value",
                    AndroidResources.STYLEABLE_KEYFRAME_VALUE, 0);
            keyframe = Keyframe.ofFloat(fraction, value);
            break;
        case VALUE_TYPE_COLOR:
        case VALUE_TYPE_INT:
            int intValue = TypedArrayUtils.getNamedInt(a, parser, "value",
                    AndroidResources.STYLEABLE_KEYFRAME_VALUE, 0);
            keyframe = Keyframe.ofInt(fraction, intValue);
            break;
        }
    } else {
        keyframe = (valueType == VALUE_TYPE_FLOAT) ? Keyframe.ofFloat(fraction) : Keyframe.ofInt(fraction);
    }

    final int resID = TypedArrayUtils.getNamedResourceId(a, parser, "interpolator",
            AndroidResources.STYLEABLE_KEYFRAME_INTERPOLATOR, 0);
    if (resID > 0) {
        final Interpolator interpolator = AnimationUtilsCompat.loadInterpolator(context, resID);
        keyframe.setInterpolator(interpolator);
    }
    a.recycle();

    return keyframe;
}

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