public void getCategories() {
layout.setRefreshing(true);
level = String.valueOf(((ReadingChallengeApplication) this.getApplication()).getLevel());
// get categories from api
apiService.listCategoriesByLevel(
level,
new Callback<List<Category>>() {
@Override
public void success(List<Category> categories, Response response) {
displayCategories(categories);
layout.setRefreshing(false);
}
@Override
public void failure(RetrofitError error) {
displayAlertDialog(getString(R.string.error), getString(R.string.activity_home_error));
layout.setRefreshing(false);
Timber.e("Error get categories : " + error.getMessage());
}
});
}
public void setRefreshStyle(int type) {
setRefreshing(false);
switch (type) {
case STYLE_MATERIAL:
mRefreshDrawable = new MaterialDrawable(getContext(), this);
break;
case STYLE_CIRCLES:
mRefreshDrawable = new CirclesDrawable(getContext(), this);
break;
case STYLE_WATER_DROP:
mRefreshDrawable = new WaterDropDrawable(getContext(), this);
break;
case STYLE_RING:
mRefreshDrawable = new RingDrawable(getContext(), this);
break;
default:
throw new InvalidParameterException("Type does not exist");
}
mRefreshDrawable.setColorSchemeColors(mColorSchemeColors);
mRefreshView.setImageDrawable(mRefreshDrawable);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (!mIsBeingDragged) {
return super.onTouchEvent(ev);
}
final int action = MotionEventCompat.getActionMasked(ev);
switch (action) {
case MotionEvent.ACTION_MOVE:
{
final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
if (pointerIndex < 0) {
return false;
}
final float y = MotionEventCompat.getY(ev, pointerIndex);
// final float yDiff = Math.abs(y - mInitialMotionY);
final float yDiff = y - mInitialMotionY;
final float scrollTop = yDiff * DRAG_RATE;
float originalDragPercent = scrollTop / 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 adjustedPercent = dragPercent;
float extraOS = Math.abs(scrollTop) - mTotalDragDistance;
float slingshotDist = 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 = (int) ((slingshotDist * dragPercent) + extraMove);
if (mRefreshView.getVisibility() != View.VISIBLE) {
mRefreshView.setVisibility(View.VISIBLE);
}
if (scrollTop < mTotalDragDistance) {
mRefreshDrawable.setPercent(dragPercent);
}
setTargetOffsetTop(targetY - mCurrentOffsetTop, true);
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) {
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);
} else {
mRefreshing = false;
animateOffsetToStartPosition();
}
mActivePointerId = INVALID_POINTER;
return false;
}
}
return true;
}
public void setRefreshing(boolean refreshing) {
if (mRefreshing != refreshing) {
setRefreshing(refreshing, false /* notify */);
}
}
public void setRefreshDrawable(RefreshDrawable drawable) {
setRefreshing(false);
mRefreshDrawable = drawable;
mRefreshDrawable.setColorSchemeColors(mColorSchemeColors);
mRefreshView.setImageDrawable(mRefreshDrawable);
}