添加LYEmptyView '~> 0.3.10'
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224
Pods/LYEmptyView/LYEmptyView/UIView+Empty.m
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224
Pods/LYEmptyView/LYEmptyView/UIView+Empty.m
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//
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// UIView+Empty.m
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// LYEmptyViewDemo
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//
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// Created by liyang on 2018/5/10.
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// Copyright © 2018年 liyang. All rights reserved.
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//
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#import "UIView+Empty.h"
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#import <objc/runtime.h>
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#import "LYEmptyView.h"
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#pragma mark - ------------------ UIView ------------------
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@implementation UIView (Empty)
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+ (void)exchangeInstanceMethod1:(SEL)method1 method2:(SEL)method2
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{
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method_exchangeImplementations(class_getInstanceMethod(self, method1), class_getInstanceMethod(self, method2));
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}
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#pragma mark - Setter/Getter
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static char kEmptyViewKey;
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- (void)setLy_emptyView:(LYEmptyView *)ly_emptyView{
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if (ly_emptyView != self.ly_emptyView) {
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objc_setAssociatedObject(self, &kEmptyViewKey, ly_emptyView, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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for (UIView *view in self.subviews) {
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if ([view isKindOfClass:[LYEmptyView class]]) {
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[view removeFromSuperview];
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}
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}
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[self addSubview:self.ly_emptyView];
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if ([self isKindOfClass:[UITableView class]] || [self isKindOfClass:[UICollectionView class]]) {
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[self getDataAndSet]; // 添加时根据DataSource去决定显隐
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} else {
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self.ly_emptyView.hidden = YES;// 添加时默认隐藏
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}
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}
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}
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- (LYEmptyView *)ly_emptyView{
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return objc_getAssociatedObject(self, &kEmptyViewKey);
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}
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#pragma mark - Private Method (UITableView、UICollectionView有效)
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- (NSInteger)totalDataCount
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{
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NSInteger totalCount = 0;
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if ([self isKindOfClass:[UITableView class]]) {
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UITableView *tableView = (UITableView *)self;
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for (NSInteger section = 0; section < tableView.numberOfSections; section++) {
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totalCount += [tableView numberOfRowsInSection:section];
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}
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} else if ([self isKindOfClass:[UICollectionView class]]) {
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UICollectionView *collectionView = (UICollectionView *)self;
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for (NSInteger section = 0; section < collectionView.numberOfSections; section++) {
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totalCount += [collectionView numberOfItemsInSection:section];
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}
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}
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return totalCount;
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}
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- (void)getDataAndSet{
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//没有设置emptyView的，直接返回
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if (!self.ly_emptyView) {
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return;
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}
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if ([self totalDataCount] == 0) {
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[self show];
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}else{
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[self hide];
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}
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}
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- (void)show{
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//当不自动显隐时，内部自动调用show方法时也不要去显示，要显示的话只有手动去调用 ly_showEmptyView
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if (!self.ly_emptyView.autoShowEmptyView) {
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return;
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}
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[self ly_showEmptyView];
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}
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- (void)hide{
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//当不自动显隐时，内部自动调用hide方法时也不要去隐藏，要隐藏的话只有手动去调用 ly_hideEmptyView
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if (!self.ly_emptyView.autoShowEmptyView) {
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return;
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}
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[self ly_hideEmptyView];
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}
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#pragma mark - Public Method
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- (void)ly_showEmptyView{
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NSAssert(![self isKindOfClass:[LYEmptyView class]], @"LYEmptyView及其子类不能调用ly_showEmptyView方法");
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self.ly_emptyView.hidden = NO;
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//让 emptyBGView 始终保持在最上层
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[self bringSubviewToFront:self.ly_emptyView];
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}
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- (void)ly_hideEmptyView{
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NSAssert(![self isKindOfClass:[LYEmptyView class]], @"LYEmptyView及其子类不能调用ly_hideEmptyView方法");
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self.ly_emptyView.hidden = YES;
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}
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- (void)ly_startLoading{
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NSAssert(![self isKindOfClass:[LYEmptyView class]], @"LYEmptyView及其子类不能调用ly_startLoading方法");
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self.ly_emptyView.hidden = YES;
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}
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- (void)ly_endLoading{
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NSAssert(![self isKindOfClass:[LYEmptyView class]], @"LYEmptyView及其子类不能调用ly_endLoading方法");
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self.ly_emptyView.hidden = [self totalDataCount];
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}
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@end
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#pragma mark - ------------------ UITableView ------------------
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@implementation UITableView (Empty)
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+ (void)load{
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[self exchangeInstanceMethod1:@selector(reloadData) method2:@selector(ly_reloadData)];
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///section
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[self exchangeInstanceMethod1:@selector(insertSections:withRowAnimation:) method2:@selector(ly_insertSections:withRowAnimation:)];
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[self exchangeInstanceMethod1:@selector(deleteSections:withRowAnimation:) method2:@selector(ly_deleteSections:withRowAnimation:)];
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[self exchangeInstanceMethod1:@selector(reloadSections:withRowAnimation:) method2:@selector(ly_reloadSections:withRowAnimation:)];
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///row
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[self exchangeInstanceMethod1:@selector(insertRowsAtIndexPaths:withRowAnimation:) method2:@selector(ly_insertRowsAtIndexPaths:withRowAnimation:)];
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[self exchangeInstanceMethod1:@selector(deleteRowsAtIndexPaths:withRowAnimation:) method2:@selector(ly_deleteRowsAtIndexPaths:withRowAnimation:)];
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[self exchangeInstanceMethod1:@selector(reloadRowsAtIndexPaths:withRowAnimation:) method2:@selector(ly_reloadRowsAtIndexPaths:withRowAnimation:)];
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}
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- (void)ly_reloadData{
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[self ly_reloadData];
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[self getDataAndSet];
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}
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///section
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- (void)ly_insertSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation{
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[self ly_insertSections:sections withRowAnimation:animation];
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[self getDataAndSet];
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}
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- (void)ly_deleteSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation{
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[self ly_deleteSections:sections withRowAnimation:animation];
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[self getDataAndSet];
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}
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- (void)ly_reloadSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation{
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[self ly_reloadSections:sections withRowAnimation:animation];
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[self getDataAndSet];
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}
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///row
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- (void)ly_insertRowsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation{
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[self ly_insertRowsAtIndexPaths:indexPaths withRowAnimation:animation];
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[self getDataAndSet];
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}
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- (void)ly_deleteRowsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation{
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[self ly_deleteRowsAtIndexPaths:indexPaths withRowAnimation:animation];
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[self getDataAndSet];
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}
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- (void)ly_reloadRowsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation{
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[self ly_reloadRowsAtIndexPaths:indexPaths withRowAnimation:animation];
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[self getDataAndSet];
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}
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@end
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#pragma mark - ------------------ UICollectionView ------------------
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@implementation UICollectionView (Empty)
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+ (void)load{
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[self exchangeInstanceMethod1:@selector(reloadData) method2:@selector(ly_reloadData)];
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///section
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[self exchangeInstanceMethod1:@selector(insertSections:) method2:@selector(ly_insertSections:)];
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[self exchangeInstanceMethod1:@selector(deleteSections:) method2:@selector(ly_deleteSections:)];
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[self exchangeInstanceMethod1:@selector(reloadSections:) method2:@selector(ly_reloadSections:)];
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///item
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[self exchangeInstanceMethod1:@selector(insertItemsAtIndexPaths:) method2:@selector(ly_insertItemsAtIndexPaths:)];
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[self exchangeInstanceMethod1:@selector(deleteItemsAtIndexPaths:) method2:@selector(ly_deleteItemsAtIndexPaths:)];
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[self exchangeInstanceMethod1:@selector(reloadItemsAtIndexPaths:) method2:@selector(ly_reloadItemsAtIndexPaths:)];
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}
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- (void)ly_reloadData{
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[self ly_reloadData];
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[self getDataAndSet];
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}
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///section
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- (void)ly_insertSections:(NSIndexSet *)sections{
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[self ly_insertSections:sections];
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[self getDataAndSet];
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}
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- (void)ly_deleteSections:(NSIndexSet *)sections{
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[self ly_deleteSections:sections];
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[self getDataAndSet];
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}
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- (void)ly_reloadSections:(NSIndexSet *)sections{
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[self ly_reloadSections:sections];
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[self getDataAndSet];
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}
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///item
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- (void)ly_insertItemsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths{
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[self ly_insertItemsAtIndexPaths:indexPaths];
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[self getDataAndSet];
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}
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- (void)ly_deleteItemsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths{
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[self ly_deleteItemsAtIndexPaths:indexPaths];
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[self getDataAndSet];
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}
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- (void)ly_reloadItemsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths{
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[self ly_reloadItemsAtIndexPaths:indexPaths];
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[self getDataAndSet];
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}
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@end
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