//
|
// MJRefreshNormalHeader.m
|
// MJRefresh
|
//
|
// Created by MJ Lee on 15/4/24.
|
// Copyright (c) 2015年 小码哥. All rights reserved.
|
//
|
|
#import "MJRefreshNormalHeader.h"
|
#import "NSBundle+MJRefresh.h"
|
#import "UIScrollView+MJRefresh.h"
|
#import "UIView+MJExtension.h"
|
|
@interface MJRefreshNormalHeader()
|
{
|
__unsafe_unretained UIImageView *_arrowView;
|
}
|
@property (weak, nonatomic) UIActivityIndicatorView *loadingView;
|
@end
|
|
@implementation MJRefreshNormalHeader
|
#pragma mark - 懒加载子控件
|
- (UIImageView *)arrowView
|
{
|
if (!_arrowView) {
|
UIImageView *arrowView = [[UIImageView alloc] initWithImage:[NSBundle mj_arrowImage]];
|
[self addSubview:_arrowView = arrowView];
|
}
|
return _arrowView;
|
}
|
|
- (UIActivityIndicatorView *)loadingView
|
{
|
if (!_loadingView) {
|
UIActivityIndicatorView *loadingView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:_activityIndicatorViewStyle];
|
loadingView.hidesWhenStopped = YES;
|
[self addSubview:_loadingView = loadingView];
|
}
|
return _loadingView;
|
}
|
|
#pragma mark - 公共方法
|
- (void)setActivityIndicatorViewStyle:(UIActivityIndicatorViewStyle)activityIndicatorViewStyle
|
{
|
_activityIndicatorViewStyle = activityIndicatorViewStyle;
|
|
[self.loadingView removeFromSuperview];
|
self.loadingView = nil;
|
[self setNeedsLayout];
|
}
|
|
#pragma mark - 重写父类的方法
|
- (void)prepare
|
{
|
[super prepare];
|
|
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000
|
if (@available(iOS 13.0, *)) {
|
_activityIndicatorViewStyle = UIActivityIndicatorViewStyleMedium;
|
return;
|
}
|
#endif
|
|
_activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
|
}
|
|
- (void)placeSubviews
|
{
|
[super placeSubviews];
|
|
// 箭头的中心点
|
CGFloat arrowCenterX = self.mj_w * 0.5;
|
if (!self.stateLabel.hidden) {
|
CGFloat stateWidth = self.stateLabel.mj_textWidth;
|
CGFloat timeWidth = 0.0;
|
if (!self.lastUpdatedTimeLabel.hidden) {
|
timeWidth = self.lastUpdatedTimeLabel.mj_textWidth;
|
}
|
CGFloat textWidth = MAX(stateWidth, timeWidth);
|
arrowCenterX -= textWidth / 2 + self.labelLeftInset;
|
}
|
CGFloat arrowCenterY = self.mj_h * 0.5;
|
CGPoint arrowCenter = CGPointMake(arrowCenterX, arrowCenterY);
|
|
// 箭头
|
if (self.arrowView.constraints.count == 0) {
|
self.arrowView.mj_size = self.arrowView.image.size;
|
self.arrowView.center = arrowCenter;
|
}
|
|
// 圈圈
|
if (self.loadingView.constraints.count == 0) {
|
self.loadingView.center = arrowCenter;
|
}
|
|
self.arrowView.tintColor = self.stateLabel.textColor;
|
}
|
|
- (void)setState:(MJRefreshState)state
|
{
|
MJRefreshCheckState
|
|
// 根据状态做事情
|
if (state == MJRefreshStateIdle) {
|
if (oldState == MJRefreshStateRefreshing) {
|
self.arrowView.transform = CGAffineTransformIdentity;
|
|
[UIView animateWithDuration:self.slowAnimationDuration animations:^{
|
self.loadingView.alpha = 0.0;
|
} completion:^(BOOL finished) {
|
// 如果执行完动画发现不是idle状态，就直接返回，进入其他状态
|
if (self.state != MJRefreshStateIdle) return;
|
|
self.loadingView.alpha = 1.0;
|
[self.loadingView stopAnimating];
|
self.arrowView.hidden = NO;
|
}];
|
} else {
|
[self.loadingView stopAnimating];
|
self.arrowView.hidden = NO;
|
[UIView animateWithDuration:self.fastAnimationDuration animations:^{
|
self.arrowView.transform = CGAffineTransformIdentity;
|
}];
|
}
|
} else if (state == MJRefreshStatePulling) {
|
[self.loadingView stopAnimating];
|
self.arrowView.hidden = NO;
|
[UIView animateWithDuration:self.fastAnimationDuration animations:^{
|
self.arrowView.transform = CGAffineTransformMakeRotation(0.000001 - M_PI);
|
}];
|
} else if (state == MJRefreshStateRefreshing) {
|
self.loadingView.alpha = 1.0; // 防止refreshing -> idle的动画完毕动作没有被执行
|
[self.loadingView startAnimating];
|
self.arrowView.hidden = YES;
|
}
|
}
|
@end
|
