@Result(FlickrApi.LOAD_IMAGES_EVENT)
private void onPhotosLoaded(List<Photo> photos, boolean hasMore) {
mPhotoCount = photos.size();
mGridAdapter.setPhotos(photos, hasMore);
mPagerAdapter.setPhotos(photos);
mGridAdapter.onNextItemsLoaded();
// Ensure listener called for 0 position
mPagerListener.onPageSelected(mViews.pager.getCurrentItem());
// Restoring saved state
if (mPagerPhotoPosition != -1) {
if (mPagerPhotoPosition < mPhotoCount) {
mPagerAdapter.setActivated(true);
mAnimator.enter(mPagerPhotoPosition, false);
}
mPagerPhotoPosition = -1;
}
if (mGridPosition != -1) {
if (mGridPosition < mPhotoCount) {
((GridLayoutManager) mViews.grid.getLayoutManager())
.scrollToPositionWithOffset(mGridPosition, mGridPositionFromTop);
}
mGridPosition = -1;
mGridPositionFromTop = 0;
}
}
private boolean onOptionsItemSelectedFullMode(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_crop:
Photo photo = mPagerAdapter.getPhoto(mViews.pager.getCurrentItem());
if (photo == null) return false;
PhotoCropActivity.show(AdvancedDemoActivity.this, photo);
return true;
default:
return false;
}
}
@Override
public void onPositionUpdate(float state, boolean isLeaving) {
mViews.pagerBackground.setVisibility(state == 0f ? View.INVISIBLE : View.VISIBLE);
mViews.pagerBackground.getBackground().setAlpha((int) (255 * state));
mViews.toolbar.setVisibility(state == 1f ? View.INVISIBLE : View.VISIBLE);
mViews.toolbar.setAlpha((float) Math.sqrt(1d - state)); // Slow down toolbar animation
mViews.pagerToolbar.setVisibility(state == 0f ? View.INVISIBLE : View.VISIBLE);
mViews.pagerToolbar.setAlpha(state);
mViews.pagerTitle.setVisibility(state == 1f ? View.VISIBLE : View.INVISIBLE);
if (isLeaving && state == 0f) mPagerAdapter.setActivated(false);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
mPagerPhotoPosition =
mAnimator.isLeaving() || mPagerAdapter.getCount() == 0 ? -1 : mViews.pager.getCurrentItem();
if (mViews.grid.getChildCount() > 0) {
View child = mViews.grid.getChildAt(0);
mGridPosition = mViews.grid.getChildAdapterPosition(child);
mGridPositionFromTop =
child.getTop() - Views.getMarginParams(child).topMargin - mViews.grid.getPaddingTop();
} else {
mGridPosition = -1;
mGridPositionFromTop = 0;
}
mSettingsMenu.onSaveInstanceState(outState);
super.onSaveInstanceState(outState);
}
private void onPhotoInPagerSelected(int position) {
Photo photo = mPagerAdapter.getPhoto(position);
if (photo == null) {
mViews.pagerTitle.setText(null);
} else {
SpannableBuilder title = new SpannableBuilder(AdvancedDemoActivity.this);
title
.append(photo.getTitle())
.append("\n")
.createStyle()
.setColorResId(R.color.text_secondary_light)
.apply()
.append(R.string.photo_by)
.append(" ")
.append(photo.getOwner().getUsername());
mViews.pagerTitle.setText(title.build());
}
}
private void initPager() {
// Setting up pager views
mPagerAdapter = new FlickrPhotoPagerAdapter(mViews.pager);
mPagerAdapter.setSetupListener(this);
mPagerListener =
new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
onPhotoInPagerSelected(position);
}
};
mViews.pager.setAdapter(mPagerAdapter);
mViews.pager.addOnPageChangeListener(mPagerListener);
mViews.pager.setPageTransformer(true, new DepthPageTransformer());
mViews.pagerToolbar.setNavigationIcon(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
mViews.pagerToolbar.setNavigationOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(@NonNull View v) {
onBackPressed();
}
});
onCreateOptionsMenuFullMode(mViews.pagerToolbar.getMenu());
mViews.pagerToolbar.setOnMenuItemClickListener(
new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
return onOptionsItemSelectedFullMode(item);
}
});
}
@Override
public void onPhotoClick(Photo photo, int position, ImageView image) {
mPagerAdapter.setActivated(true);
mAnimator.enter(position, true);
}