LauncherEdgeEffect.java 文件源码

/**
 * Call when the object is released after being pulled.
 * This will begin the "decay" phase of the effect. After calling this method
 * the host view should {@link android.view.View#invalidate()} and thereby
 * draw the results accordingly.
 */
public void onRelease() {
    mPullDistance = 0;

    if (mState != STATE_PULL && mState != STATE_PULL_DECAY) {
        return;
    }

    mState = STATE_RECEDE;
    mGlowAlphaStart = mGlowAlpha;
    mGlowScaleYStart = mGlowScaleY;

    mGlowAlphaFinish = 0.f;
    mGlowScaleYFinish = 0.f;

    mStartTime = AnimationUtils.currentAnimationTimeMillis();
    mDuration = RECEDE_TIME;
}