예제 #1
0
 @Override
 public void onAnimationEnd(Animation animation) {
   if (mRefreshing) {
     // Make sure the progress view is fully visible
     mProgress.setAlpha(MAX_ALPHA);
     mProgress.start();
     if (mNotify) {
       if (mListener != null) {
         mListener.onRefresh();
       }
     }
   } else {
     mProgress.stop();
     mCircleView.setVisibility(View.GONE);
     setColorViewAlpha(MAX_ALPHA);
     // Return the circle to its start position
     if (mScale) {
       setAnimationProgress(0 /* animation complete and view is hidden */);
     } else {
       setTargetOffsetTopAndBottom(
           mOriginalOffsetTop - mCurrentTargetOffsetTop, true /* requires update */);
     }
   }
   mCurrentTargetOffsetTop = mCircleView.getTop();
 }
예제 #2
0
 private void createProgressView() {
   mCircleView = new CircleImageView(getContext(), CIRCLE_BG_LIGHT, CIRCLE_DIAMETER / 2);
   mProgress = new MaterialProgressDrawable(getContext(), this);
   mProgress.setBackgroundColor(CIRCLE_BG_LIGHT);
   mCircleView.setImageDrawable(mProgress);
   mCircleView.setVisibility(View.GONE);
   addView(mCircleView);
 }
예제 #3
0
 /**
  * The refresh indicator starting and resting position is always positioned near the top of the
  * refreshing content. This position is a consistent location, but can be adjusted in either
  * direction based on whether or not there is a toolbar or actionbar present.
  *
  * @param scale Set to true if there is no view at a higher z-order than where the progress
  *     spinner is set to appear.
  * @param start The offset in pixels from the top of this view at which the progress spinner
  *     should appear.
  * @param end The offset in pixels from the top of this view at which the progress spinner should
  *     come to rest after a successful swipe gesture.
  */
 public void setProgressViewOffset(boolean scale, int start, int end) {
   mScale = scale;
   mCircleView.setVisibility(View.GONE);
   mOriginalOffsetTop = mCurrentTargetOffsetTop = start;
   mSpinnerFinalOffset = end;
   mUsingCustomStart = true;
   mCircleView.invalidate();
 }
예제 #4
0
 private void startScaleUpAnimation(AnimationListener listener) {
   mCircleView.setVisibility(View.VISIBLE);
   if (android.os.Build.VERSION.SDK_INT >= 11) {
     // Pre API 11, alpha is used in place of scale up to show the
     // progress circle appearing.
     // Don't adjust the alpha during appearance otherwise.
     mProgress.setAlpha(MAX_ALPHA);
   }
   mScaleAnimation =
       new Animation() {
         @Override
         public void applyTransformation(float interpolatedTime, Transformation t) {
           setAnimationProgress(interpolatedTime);
         }
       };
   mScaleAnimation.setDuration(mMediumAnimationDuration);
   if (listener != null) {
     mCircleView.setAnimationListener(listener);
   }
   mCircleView.clearAnimation();
   mCircleView.startAnimation(mScaleAnimation);
 }
예제 #5
0
  @Override
  public boolean onTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
      mReturningToStart = false;
    }

    if (!isEnabled() || mReturningToStart || canChildScrollUp()) {
      // Fail fast if we're not in a state where a swipe is possible
      return false;
    }

    switch (action) {
      case MotionEvent.ACTION_DOWN:
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        break;

      case MotionEvent.ACTION_MOVE:
        {
          final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
          if (pointerIndex < 0) {
            Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id.");
            return false;
          }

          final float y = MotionEventCompat.getY(ev, pointerIndex);
          final float overscrollTop = (y - mInitialMotionY) * DRAG_RATE;
          if (mIsBeingDragged) {
            mProgress.showArrow(true);
            float originalDragPercent = overscrollTop / mTotalDragDistance;
            if (originalDragPercent < 0) {
              return false;
            }
            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 */);
          }
          break;
        }
      case MotionEventCompat.ACTION_POINTER_DOWN:
        {
          final int index = MotionEventCompat.getActionIndex(ev);
          mActivePointerId = MotionEventCompat.getPointerId(ev, index);
          break;
        }

      case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;

      case MotionEvent.ACTION_UP:
      case MotionEvent.ACTION_CANCEL:
        {
          if (mActivePointerId == INVALID_POINTER) {
            if (action == MotionEvent.ACTION_UP) {
              Log.e(LOG_TAG, "Got ACTION_UP event but don't have an active pointer id.");
            }
            return false;
          }
          final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
          final float y = MotionEventCompat.getY(ev, pointerIndex);
          final float overscrollTop = (y - mInitialMotionY) * DRAG_RATE;
          mIsBeingDragged = false;
          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);
          }
          mActivePointerId = INVALID_POINTER;
          return false;
        }
    }

    return true;
  }