137 lines
3.7 KiB
Objective-C
137 lines
3.7 KiB
Objective-C
//
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// Created by pengfei.zhou on 2019/11/26.
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//
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#import "DoricSwipeRefreshLayout.h"
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#import "UIView+Doric.h"
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#import "DoricLayouts.h"
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@interface DoricSwipeRefreshLayout () <UIScrollViewDelegate>
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@end
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@implementation DoricSwipeRefreshLayout
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- (instancetype)initWithFrame:(CGRect)frame {
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if (self = [super initWithFrame:frame]) {
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self.showsHorizontalScrollIndicator = NO;
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self.showsVerticalScrollIndicator = NO;
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self.alwaysBounceVertical = YES;
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self.delegate = self;
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if (@available(iOS 11, *)) {
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self.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
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}
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}
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return self;
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}
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- (instancetype)init {
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if (self = [super init]) {
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self.showsHorizontalScrollIndicator = NO;
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self.showsVerticalScrollIndicator = NO;
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self.alwaysBounceVertical = YES;
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self.delegate = self;
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if (@available(iOS 11, *)) {
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self.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
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}
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}
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return self;
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}
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- (CGSize)sizeThatFits:(CGSize)size {
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if (self.contentView) {
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return [self.contentView measureSize:size];
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}
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return CGSizeZero;
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}
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- (BOOL)requestFromSubview:(UIView *)subview {
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if (subview == self.headerView) {
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return NO;
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}
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return [super requestFromSubview:subview];
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}
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- (void)layoutSelf:(CGSize)targetSize {
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[super layoutSelf:targetSize];
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self.headerView.bottom = 0;
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self.headerView.centerX = self.centerX;
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self.contentSize = self.frame.size;
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}
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- (void)setContentView:(UIView *)contentView {
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if (_contentView) {
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[_contentView removeFromSuperview];
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}
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_contentView = contentView;
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[self addSubview:contentView];
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}
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- (void)setHeaderView:(UIView *)headerView {
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if (_headerView) {
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[_headerView removeFromSuperview];
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}
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_headerView = headerView;
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[self addSubview:headerView];
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self.refreshable = YES;
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}
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- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
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if (-scrollView.contentOffset.y >= self.headerView.height) {
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self.refreshing = YES;
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}
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}
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
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if (scrollView.contentOffset.y <= 0) {
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[self.swipePullingDelegate setProgressRotation:-scrollView.contentOffset.y / self.headerView.height];
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//self.bounces = YES;
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} else {
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//self.bounces = NO;
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//scrollView.contentOffset = CGPointMake(scrollView.contentOffset.x, 0);
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}
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}
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- (void)setRefreshing:(BOOL)refreshing {
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if (_refreshing == refreshing) {
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return;
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}
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if (refreshing) {
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if (self.onRefreshBlock) {
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self.onRefreshBlock();
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}
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[UIView animateWithDuration:0.3f
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animations:^{
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self.contentInset = UIEdgeInsetsMake(self.headerView.height, 0, 0, 0);
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}
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completion:^(BOOL finished) {
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[self.swipePullingDelegate startAnimation];
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}
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];
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} else {
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[UIView animateWithDuration:0.3f
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animations:^{
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self.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
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}
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completion:^(BOOL finished) {
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[self.swipePullingDelegate stopAnimation];
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}
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];
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}
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_refreshing = refreshing;
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}
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- (void)setRefreshable:(BOOL)refreshable {
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self.scrollEnabled = refreshable;
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}
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- (BOOL)refreshable {
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return self.scrollEnabled;
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}
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- (void)setContentSize:(CGSize)contentSize {
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[super setContentSize:contentSize];
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}
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@end
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