Scroller.java 文件源码

/**
 * Create a Scroller with the specified interpolator. If the interpolator is
 * null, the default (viscous) interpolator will be used. Specify whether or
 * not to support progressive "flywheel" behavior in flinging.
 */
public Scroller(Context context, Interpolator interpolator, boolean flywheel) {
    mFinished = true;
    mInterpolator = interpolator;
    mPpi = context.getResources().getDisplayMetrics().density * 160.0f;
    mDeceleration = computeDeceleration(ViewConfiguration.getScrollFriction());
    mFlywheel = flywheel;
}