Fix crash onPresenceChanged

Classes/ContactDetailsView.m

@@ -186,7 +186,7 @@
 		_editButton.hidden = TRUE;
 		_deleteButton.hidden = TRUE;
 	}
-
+	PhoneMainView.instance.currentName = _nameLabel.text;
 	// Update presence for contact
 	for (NSInteger j = 0; j < [self.tableController.tableView numberOfSections]; ++j) {
 		for (NSInteger i = 0; i < [self.tableController.tableView numberOfRowsInSection:j]; ++i) {
@@ -222,6 +222,7 @@
 - (void)viewWillDisappear:(BOOL)animated {
 	[_tableController.tableView removeObserver:self forKeyPath:@"contentSize"];
 	[super viewWillDisappear:animated];
+	PhoneMainView.instance.currentName = NULL;
 	if (self.tmpContact) {
 		_contact.firstName = _tmpContact.firstName.copy;
 		_contact.lastName = _tmpContact.lastName.copy;

Classes/LinphoneUI/UIContactCell.m

@@ -20,6 +20,7 @@
 #import "UIContactCell.h"
 #import "ContactsListTableView.h"
 #import "FastAddressBook.h"
+#import "PhoneMainView.h"
 #import "UILabel+Boldify.h"
 #import "Utils.h"
 
@@ -37,7 +38,7 @@
 		UIView *sub = ((UIView *)[arrayOfViews objectAtIndex:0]);
 		[self setFrame:CGRectMake(0, 0, sub.frame.size.width, sub.frame.size.height)];
 		[self addSubview:sub];
-
+		_contact = NULL;
 		// Sections are wider on iPad and overlap linphone image - let's move it a bit
 		if (IPAD) {
 			CGRect frame = _linphoneImage.frame;
@@ -63,12 +64,12 @@
 - (void)onPresenceChanged:(NSNotification *)k {
 	LinphoneFriend *f = [[k.userInfo valueForKey:@"friend"] pointerValue];
 	// only consider event if it's about us
-	if (_contact) {
+	if (_contact && (_nameLabel.text == PhoneMainView.instance.currentName || !PhoneMainView.instance.currentName)) {
 		if (!_contact.friend || f != _contact.friend) {
 			return;
 		}
+		[self setContact:_contact];
 	}
-	[self setContact:_contact];
 }
 
 #pragma mark - Property Functions

Classes/PhoneMainView.h

@@ -78,6 +78,7 @@
 @property(nonatomic, strong) IBOutlet UIView *statusBarBG;
 @property(nonatomic, strong) IBOutlet UICompositeView *mainViewController;
 
+@property(nonatomic, strong) NSString *currentName;
 @property(nonatomic, strong) NSString *name;
 @property(weak, readonly) UICompositeViewDescription *currentView;
 @property LinphoneChatRoom* currentRoom;

Classes/PhoneMainView.m

@@ -127,6 +127,7 @@ static RootViewManager *rootViewManagerInstance = nil;
 - (void)initPhoneMainView {
 	currentView = nil;
 	_currentRoom = NULL;
+	_currentName = NULL;
 	inhibitedEvents = [[NSMutableArray alloc] init];
 }