Atlas is a fully featured, high performance, 100% customizable UI kit, built by Layer to power communications interfaces in any app. If you want to learn how to integrate chat in your iOS app, take a look at Implementing Chat/Messaging in iOS apps with Layer.
In the previous post, I talked about subclassing ATLMessageCollectionViewCell to display avatars on both sides in a conversation. Let’s take that a step further and see how we can handle tap on avatars in a conversation. We will subclass the same class this time, but for the incoming messages rather than the outgoing ones.
@interface PGIncomingMessageCollectionViewCell ()
@property(nonatomic, strong) UITapGestureRecognizer *avatarTapGestureRecognizer;
@end
@implementation PGIncomingMessageCollectionViewCell
NSString *const PGIncomingMessageCellIdentifier = @"PGIncomingMessageCellIdentifier";
- (void)lyr_incommingCommonInit {
[super lyr_incommingCommonInit];
self.avatarTapGestureRecognizer = [[UITapGestureRecognizer alloc] bk_initWithHandler:^(UIGestureRecognizer *sender, UIGestureRecognizerState state, CGPoint location) {
// TODO Handle a tap on the avatar item
}];
[self.avatarImageView addGestureRecognizer:self.avatarTapGestureRecognizer];
self.avatarImageView.userInteractionEnabled = YES;
[self.avatarImageView mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.equalTo(@35);
make.width.equalTo(@35);
}];
}
- (void)layoutSubviews {
[super layoutSubviews];
self.avatarImageView.layer.cornerRadius = CGRectGetHeight(self.avatarImageView.frame) / 2;
}
@endIn your ATLConversationViewController subclass, do the following:
- (void)viewDidLoad {
[self registerClass:[PGIncomingMessageCollectionViewCell class] forMessageCellWithReuseIdentifier:PGIncomingMessageCellIdentifier];
}
- (NSString *)conversationViewController:(ATLConversationViewController *)viewController reuseIdentifierForMessage:(LYRMessage *)message {
if ([message.sentByUserID isEqualToString:self.layerClient.authenticatedUserID]) {
return PGOutgoingMessageCellIdentifier;
}
return PGIncomingMessageCellIdentifier;
}Need help setting this up or just want to chat? Shoot me an email at pulkit110@gmail.com.