コード例 #1
0
  private void finishSpinner(float overscrollTop) {
    if (overscrollTop > mTotalDragDistance) {
      setRefreshing(true, true /* notify */);
    } else {
      // cancel refresh
      mRefreshing = false;
      mProgress.setStartEndTrim(0f, 0f);
      Animation.AnimationListener listener = null;
      if (!mScale) {
        listener =
            new Animation.AnimationListener() {

              @Override
              public void onAnimationStart(Animation animation) {}

              @Override
              public void onAnimationEnd(Animation animation) {
                if (!mScale) {
                  startScaleDownAnimation(null);
                }
              }

              @Override
              public void onAnimationRepeat(Animation animation) {}
            };
      }
      animateOffsetToStartPosition(mCurrentTargetOffsetTop, listener);
      mProgress.showArrow(false);
    }
  }
コード例 #2
0
  private void moveSpinner(float overscrollTop) {
    mProgress.showArrow(true);
    float originalDragPercent = overscrollTop / mTotalDragDistance;

    float dragPercent = Math.min(1f, Math.abs(originalDragPercent));
    float adjustedPercent = (float) Math.max(dragPercent - .4, 0) * 5 / 3;
    float extraOS = Math.abs(overscrollTop) - mTotalDragDistance;
    float slingshotDist =
        mUsingCustomStart ? mSpinnerFinalOffset - mOriginalOffsetTop : mSpinnerFinalOffset;
    float tensionSlingshotPercent =
        Math.max(0, Math.min(extraOS, slingshotDist * 2) / slingshotDist);
    float tensionPercent =
        (float) ((tensionSlingshotPercent / 4) - Math.pow((tensionSlingshotPercent / 4), 2)) * 2f;
    float extraMove = (slingshotDist) * tensionPercent * 2;

    int targetY = mOriginalOffsetTop + (int) ((slingshotDist * dragPercent) + extraMove);
    // where 1.0f is a full circle
    if (mCircleView.getVisibility() != View.VISIBLE) {
      mCircleView.setVisibility(View.VISIBLE);
    }
    if (!mScale) {
      ViewCompat.setScaleX(mCircleView, 1f);
      ViewCompat.setScaleY(mCircleView, 1f);
    }
    if (overscrollTop < mTotalDragDistance) {
      if (mScale) {
        setAnimationProgress(overscrollTop / mTotalDragDistance);
      }
      if (mProgress.getAlpha() > STARTING_PROGRESS_ALPHA
          && !isAnimationRunning(mAlphaStartAnimation)) {
        // Animate the alpha
        startProgressAlphaStartAnimation();
      }
      float strokeStart = adjustedPercent * .8f;
      mProgress.setStartEndTrim(0f, Math.min(MAX_PROGRESS_ANGLE, strokeStart));
      mProgress.setArrowScale(Math.min(1f, adjustedPercent));
    } else {
      if (mProgress.getAlpha() < MAX_ALPHA && !isAnimationRunning(mAlphaMaxAnimation)) {
        // Animate the alpha
        startProgressAlphaMaxAnimation();
      }
    }
    float rotation = (-0.25f + .4f * adjustedPercent + tensionPercent * 2) * .5f;
    mProgress.setProgressRotation(rotation);
    setTargetOffsetTopAndBottom(targetY - mCurrentTargetOffsetTop, true /* requires update */);
  }