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Add possible fixes for the ‘empty home view’ issue. 

// FREEBIE
This commit is contained in:
Matthew Chen 2017-07-14 13:34:24 -04:00
parent 3f805cd4cd
commit f52814bb70
1 changed files with 21 additions and 15 deletions
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36
Signal/src/ViewControllers/SignalsViewController.m
View File

@ -415,29 +415,35 @@
- (void)setShouldObserveDBModifications:(BOOL)shouldObserveDBModifications
{
if (!_shouldObserveDBModifications && shouldObserveDBModifications && self.threadMappings != nil) {
// Before we begin observing database modifications, make sure
// our mapping and table state is up-to-date.
//
// We need to `beginLongLivedReadTransaction` before we update our
// mapping in order to jump to the most recent commit.
[self.uiDatabaseConnection beginLongLivedReadTransaction];
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
[self.threadMappings updateWithTransaction:transaction];
}];
_shouldObserveDBModifications = shouldObserveDBModifications;
[self ensureObserveDBModifications];
}
- (void)ensureObserveDBModifications
{
if (self.shouldObserveDBModifications) {
if (self.threadMappings != nil) {
// Before we begin observing database modifications, make sure
// our mapping and table state is up-to-date.
//
// We need to `beginLongLivedReadTransaction` before we update our
// mapping in order to jump to the most recent commit.
[self.uiDatabaseConnection beginLongLivedReadTransaction];
[self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
[self.threadMappings updateWithTransaction:transaction];
}];
}
[[self tableView] reloadData];
}
_shouldObserveDBModifications = shouldObserveDBModifications;
if (shouldObserveDBModifications) {
[[NSNotificationCenter defaultCenter] removeObserver:self name:YapDatabaseModifiedNotification object:nil];
if (self.shouldObserveDBModifications) {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(yapDatabaseModified:)
name:YapDatabaseModifiedNotification
object:nil];
} else {
[[NSNotificationCenter defaultCenter] removeObserver:self name:YapDatabaseModifiedNotification object:nil];
}
[self checkIfEmptyView];