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修正了新消息插入跟下拉加载消息的时候出现崩溃的现象 #330

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修正了新消息插入跟下拉加载消息的时候出现崩溃的现象 #330

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59 changes: 59 additions & 0 deletions ...isplayKit/Classes/Controllers/XHMessageTableViewController/XHMessageTableViewController.m
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Original file line number Diff line number Diff line change
Expand Up @@ -224,6 +224,25 @@ - (void)exMainQueue:(void (^)())queue {
}

- (void)addMessage:(XHMessage *)addedMessage {
int64_t delayInSeconds = 0.2;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);
dispatch_after(popTime, dispatch_get_main_queue(), ^(void) {
NSMutableArray *messages = [NSMutableArray arrayWithArray:self.messages];
[messages addObject:addedMessage];

NSMutableArray *indexPaths = [NSMutableArray arrayWithCapacity:1];
[indexPaths addObject:[NSIndexPath indexPathForRow:messages.count - 1 inSection:0]];
self.messages = messages;
// [weakSelf.messageTableView beginUpdates];
[self.messageTableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationNone];
// [weakSelf.messageTableView endUpdates];
[self.messageTableView reloadData];
[self scrollToBottomAnimated:YES];


});

/*
WEAKSELF
[self exChangeMessageDataSourceQueue:^{
NSMutableArray *messages = [NSMutableArray arrayWithArray:weakSelf.messages];
Expand All @@ -238,6 +257,7 @@ - (void)addMessage:(XHMessage *)addedMessage {
[weakSelf scrollToBottomAnimated:YES];
}];
}];
*/
}

- (void)removeMessageAtIndexPath:(NSIndexPath *)indexPath {
Expand All @@ -254,6 +274,44 @@ - (void)removeMessageAtIndexPath:(NSIndexPath *)indexPath {
static CGPoint delayOffset = {0.0};
// http://stackoverflow.com/a/11602040 Keep UITableView static when inserting rows at the top
- (void)insertOldMessages:(NSArray *)oldMessages completion:(void (^)())completion {
int64_t delayInSeconds = 0.2;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);
dispatch_after(popTime, dispatch_get_main_queue(), ^(void) {

delayOffset = self.messageTableView.contentOffset;
NSMutableArray *indexPaths = [[NSMutableArray alloc] initWithCapacity:oldMessages.count];
NSMutableIndexSet *indexSets = [[NSMutableIndexSet alloc] init];
[oldMessages enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:idx inSection:0];
[indexPaths addObject:indexPath];

delayOffset.y += [self calculateCellHeightWithMessage:[oldMessages objectAtIndex:idx] atIndexPath:indexPath];
[indexSets addIndex:idx];
}];

NSMutableArray *messages = [[NSMutableArray alloc] initWithArray:self.messages];
[messages insertObjects:oldMessages atIndexes:indexSets];
[UIView setAnimationsEnabled:NO];
self.messageTableView.userInteractionEnabled = NO;
//[self.messageTableView beginUpdates];

self.messages = messages;

[self.messageTableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationNone];
// [weakSelf.messageTableView reloadData];

[UIView setAnimationsEnabled:YES];

[self.messageTableView setContentOffset:delayOffset animated:NO];
self.messageTableView.userInteractionEnabled = YES;
if (completion) {
completion();
}


});

/*
WEAKSELF
[self exChangeMessageDataSourceQueue:^{
delayOffset = weakSelf.messageTableView.contentOffset;
Expand Down Expand Up @@ -291,6 +349,7 @@ - (void)insertOldMessages:(NSArray *)oldMessages completion:(void (^)())completi
}
}];
}];
*/
}

- (void)insertOldMessages:(NSArray *)oldMessages {
Expand Down