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根据需求改变：已有占位图的时候再次reloadData会重新请求占位图而不是直接返回（用于从一个占位图直接切换到其他种类占位图的情况） #14

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根据需求改变：已有占位图的时候再次reloadData会重新请求占位图而不是直接返回（用于从一个占位图直接切换到其他种类占位图的情况） #14

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17 changes: 16 additions & 1 deletion CYLTableViewPlaceHolder/UITableView+CYLTableViewPlaceHolder.m
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Original file line number Diff line number Diff line change
Expand Up @@ -63,15 +63,23 @@ - (void)cyl_checkEmpty {
self.scrollWasEnabled = self.scrollEnabled;
BOOL scrollEnabled = NO;
if ([self respondsToSelector:@selector(enableScrollWhenPlaceHolderViewShowing)]) {
scrollEnabled = [self performSelector:@selector(enableScrollWhenPlaceHolderViewShowing)];
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wint-conversion"
scrollEnabled = [self performSelector:@selector(enableScrollWhenPlaceHolderViewShowing)];
#pragma clang diagnostic pop

if (!scrollEnabled) {
NSString *reason = @"There is no need to return NO for `-enableScrollWhenPlaceHolderViewShowing`, it will be NO by default";
@throw [NSException exceptionWithName:NSGenericException
reason:reason
userInfo:nil];
}
} else if ([self.delegate respondsToSelector:@selector(enableScrollWhenPlaceHolderViewShowing)]) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wint-conversion"
scrollEnabled = [self.delegate performSelector:@selector(enableScrollWhenPlaceHolderViewShowing)];
#pragma clang diagnostic pop

if (!scrollEnabled) {
NSString *reason = @"There is no need to return NO for `-enableScrollWhenPlaceHolderViewShowing`, it will be NO by default";
@throw [NSException exceptionWithName:NSGenericException
Expand Down Expand Up @@ -101,8 +109,15 @@ - (void)cyl_checkEmpty {
} else if (isEmpty) {
// Make sure it is still above all siblings.
[self.placeHolderView removeFromSuperview];
if ([self respondsToSelector:@selector(makePlaceHolderView)]) {
self.placeHolderView = [self performSelector:@selector(makePlaceHolderView)];
} else if ( [self.delegate respondsToSelector:@selector(makePlaceHolderView)]) {
self.placeHolderView = [self.delegate performSelector:@selector(makePlaceHolderView)];
}
self.placeHolderView.frame = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);
[self addSubview:self.placeHolderView];
}
}

@end