下拉刷新控件
@property(nonatomic,strong) VRefreshHeadView *vrefresh;
[self vrefresh];
-(VRefreshHeadView *)vrefresh{
__weak typeof(self) weakSelf = self;
if (!_vrefresh) {
_vrefresh=[[VRefreshHeadView alloc] initWithScrollView:weakSelf.tbView beginRefreshBlock:^(VRefreshHeadView *vrefresh) {
NSLog(@"进入刷新回调");
[self performSelector:@selector(endVrefresh) withObject:nil afterDelay:3.0f];
}];
}
return _vrefresh;
}
-(void)endVrefresh{
[_vrefresh endRefresh];
}
//
// VRefreshHeadView.h
// 下拉刷新控件
//
// Created by Vie on 2016/10/10.
// Copyright © 2016年 Vie. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef NS_ENUM(NSUInteger, VRefreshType) {
VRefreshTypeDefault = 0,//默认下拉刷新样式
};
@interface VRefreshHeadView : UIView
typedef void (^beginRefreshBlock) (VRefreshHeadView *vrefresh);//刷新事件回调
@property(nonatomic,assign) NSUInteger type;//刷新视图样式
/**
创建下拉刷新视图
@param scrollView 滚动视图
@param beginRefreshBlock 开始刷新回调
@return 刷新视图对象
*/
-(instancetype)initWithScrollView:(UIScrollView *)scrollView beginRefreshBlock:(beginRefreshBlock)beginRefreshBlock;
//停止刷新
-(void)endRefresh;
@end
//
// VRefreshHeadView.m
// 下拉刷新控件
//
// Created by Vie on 2016/10/10.
// Copyright © 2016年 Vie. All rights reserved.
//
#import "VRefreshHeadView.h"
#define vRefreshHeadViewHeight 40
#define navBarHeight 64 //竖屏导航栏和控制器高度(竖屏导航栏高度44,竖屏状态栏高度为20、打电话或者某些情况为40)
@interface VRefreshHeadView ()
@property (nonatomic,copy) beginRefreshBlock beginRefreshBlock;
@property(nonatomic,weak) UIScrollView *scrollView;
/**
*头部提示语
*/
@property(nonatomic,weak) UILabel *headTipLable;
/**
* 加载提示
*/
@property (nonatomic, weak) UIActivityIndicatorView *indicatorView;
/**
*是否处于刷新状态
*/
@property(nonatomic,assign) BOOL isRefresh;
@end
@implementation VRefreshHeadView
#pragma mark - init方法
-(instancetype)initWithScrollView:(UIScrollView *)scrollView beginRefreshBlock:(beginRefreshBlock)beginRefreshBlock{
self=[super initWithFrame:CGRectMake(0, -vRefreshHeadViewHeight, scrollView.frame.size.width, vRefreshHeadViewHeight)];
if (self) {
_scrollView=scrollView;
_beginRefreshBlock=beginRefreshBlock;
//把当前视图加载到scrollView的UI
[_scrollView addSubview:self];
//设置背景颜色
self.backgroundColor=[UIColor clearColor];
//默认不在刷新状态
self.isRefresh=false;
//注册观察者,监听下拉刷新改变
[_scrollView addObserver:self forKeyPath:@"contentOffset" options:NSKeyValueObservingOptionOld | NSKeyValueObservingOptionNew context:nil];
}
return self;
}
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context{
if ([keyPath isEqualToString:@"contentOffset"]) {
if (_scrollView.contentOffset.y<(-navBarHeight-vRefreshHeadViewHeight)&&!self.isRefresh&&_scrollView.dragging) {
[self.indicatorView startAnimating];
self.isRefresh=true;
self.headTipLable.text=@"加载中..";
_scrollView.contentInset = UIEdgeInsetsMake(vRefreshHeadViewHeight+navBarHeight, 0, 0, 0);
if (_beginRefreshBlock) {
_beginRefreshBlock(self);
}
}
}
}
//停止刷新
-(void)endRefresh{
[UIView animateWithDuration:0.3 animations:^{
// _scrollView.contentInset = UIEdgeInsetsZero;
_scrollView.contentInset = UIEdgeInsetsMake(navBarHeight, 0, 0, 0);
} completion:^(BOOL finished) {
[self.indicatorView stopAnimating];
self.isRefresh=false;
_headTipLable.text=@"下拉刷新数据";
}];
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
*/
- (void)drawRect:(CGRect)rect {
// Drawing code
if (_type) {
}else{
//没有指定type用默认视图
[self setDefaultView];
}
}
//默认样式
-(void)setDefaultView{
[self headTipLable];
}
#pragma mark - 懒加载创建控件
- (UIActivityIndicatorView *)indicatorView
{
if (!_indicatorView)
{
UIActivityIndicatorView *act = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(50, 0, 30, self.frame.size.height)];
act.color = [UIColor grayColor];
[self addSubview:act];
_indicatorView = act;
}
return _indicatorView;
}
-(UILabel *)headTipLable{
if (!_headTipLable) {
UILabel *lb = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width,self.frame.size.height)];
lb.textAlignment = NSTextAlignmentCenter;
lb.textColor = [UIColor grayColor];
lb.font = [UIFont systemFontOfSize:13];
lb.text = @"下拉刷新数据";
[self addSubview:lb];
_headTipLable = lb;
}
return _headTipLable;
}
-(void)dealloc{
[_scrollView removeObserver:self forKeyPath:@"contentOffset"];
}
@end
下拉加载更多控件
@property(nonatomic,strong) VLoadMoreFootView *vload;
[self vload];
-(VLoadMoreFootView *)vload{
__weak typeof(self) weakSelf=self;
if (!_vload) {
_vload=[[VLoadMoreFootView alloc] initWithScrollView:weakSelf.tbView beginLoadMoreBlock:^(VLoadMoreFootView *vrefresh) {
NSLog(@"进入上拉加载");
[self performSelector:@selector(endVload) withObject:nil afterDelay:3.0f];
}];
}
return _vload;
}
-(void)endVload{
[_vload endLoadMore];
}
//
// VLoadMoreFootView.h
// 上拉加载更多控件
//
// Created by Vie on 2016/10/17.
// Copyright © 2016年 Vie. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef NS_ENUM(NSUInteger, VLoadMoreType) {
VLoadMoreTypeDefault = 0,//默认上拉加载样式
};
@interface VLoadMoreFootView : UIView
typedef void (^beginLoadMoreBlock) (VLoadMoreFootView *vrefresh);//加载更多事件回调
@property(nonatomic,assign) NSUInteger type;//加载更多视图样式
/**
创建上拉加载新视图
@param scrollView 滚动视图
@param beginLoadMoreBlock 开始加载更多回调
@return 加载视图对象
*/
-(instancetype)initWithScrollView:(UIScrollView *)scrollView beginLoadMoreBlock:(beginLoadMoreBlock)beginLoadMoreBlock;
//停止加载
-(void)endLoadMore;
@end
//
// VLoadMoreFootView.m
// 上拉加载更多控件
//
// Created by Vie on 2016/10/17.
// Copyright © 2016年 Vie. All rights reserved.
//
#import "VLoadMoreFootView.h"
#define vLoadMoreBottomViewHeight 40
#define navBarHeight 64 //竖屏导航栏和控制器高度(竖屏导航栏高度44,竖屏状态栏高度为20、打电话或者某些情况为40)
@interface VLoadMoreFootView()
@property(nonatomic,copy) beginLoadMoreBlock beginLoadMoreBlock;
@property(nonatomic,weak) UIScrollView *scrollView;
/**
*底部提示语
*/
@property(nonatomic,weak) UILabel *bottomTipLable;
/**
*加载提示
*/
@property(nonatomic,weak) UIActivityIndicatorView *indicatorView;
/**
*是否处于加载状态
*/
@property(nonatomic,assign) BOOL isLoad;
@end
@implementation VLoadMoreFootView
#pragma mark - init方法
-(instancetype)initWithScrollView:(UIScrollView *)scrollView beginLoadMoreBlock:(beginLoadMoreBlock)beginLoadMoreBlock{
self=[super initWithFrame:CGRectMake(0, 0, scrollView.frame.size.width, vLoadMoreBottomViewHeight)];
if (self) {
_scrollView=scrollView;
_beginLoadMoreBlock=beginLoadMoreBlock;
//把当前视图加载到scrollView的UI
[_scrollView addSubview:self];
//设置背景颜色
self.backgroundColor=[UIColor clearColor];
//默认不在加载状态
self.isLoad=false;
//注册观察这,监听上拉加载改变
[_scrollView addObserver:self forKeyPath:@"contentOffset" options:NSKeyValueObservingOptionOld | NSKeyValueObservingOptionNew context:nil];
}
return self;
}
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context{
if ([keyPath isEqualToString:@"contentOffset"]) {
if (_scrollView.contentOffset.y>(_scrollView.contentSize.height-_scrollView.frame.size.height)&&!self.isLoad&&_scrollView.dragging) {
[self.indicatorView startAnimating];
self.isLoad=true;
self.bottomTipLable.text=@"加载中..";
_scrollView.contentInset = UIEdgeInsetsMake(0, 0, vLoadMoreBottomViewHeight, 0);
if (_beginLoadMoreBlock) {
_beginLoadMoreBlock(self);
}
}
}
}
//停止加载
-(void)endLoadMore{
[UIView animateWithDuration:0.3 animations:^{
// _scrollView.contentInset = UIEdgeInsetsZero;
_scrollView.contentInset = UIEdgeInsetsMake(navBarHeight, 0, 0, 0);
} completion:^(BOOL finished) {
[self.indicatorView stopAnimating];
self.isLoad=false;
_bottomTipLable.text = @"上拉加载更多数据";
}];
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
*/
- (void)drawRect:(CGRect)rect {
// Drawing code
if (_type) {
}else{
//没有指定type用默认视图
[self setDefaultView];
}
}
//默认样式
-(void)setDefaultView{
[self bottomTipLable];
}
-(UILabel *)bottomTipLable{
if (!_bottomTipLable) {
UILabel *lb = [[UILabel alloc] initWithFrame:CGRectMake(0, _scrollView.contentSize.height, self.frame.size.width,self.frame.size.height)];
lb.textAlignment = NSTextAlignmentCenter;
lb.textColor = [UIColor grayColor];
lb.font = [UIFont systemFontOfSize:13];
lb.text = @"上拉加载更多数据";
[self addSubview:lb];
_bottomTipLable = lb;
}
return _bottomTipLable;
}
#pragma mark - 懒加载创建控件
- (UIActivityIndicatorView *)indicatorView
{
if (!_indicatorView)
{
UIActivityIndicatorView *act = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(50, _scrollView.contentSize.height, 30, self.frame.size.height)];
act.color = [UIColor grayColor];
[self addSubview:act];
_indicatorView = act;
}
return _indicatorView;
}
-(void)dealloc{
[_scrollView removeObserver:self forKeyPath:@"contentOffset"];
}
@end