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  • How to create dynamic UITableViewCell for Chat

    @kuldeep.butola
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    Following code will help you to create dynamic UITableViewCell w.r.t to its content of message. 

    1. -(void)setChatData:(ChatMessage *)messageObj memberDict:(NSDictionary *)memberDict isCurrentUser:(BOOL)isCurrentUser{
    2.  
    3.  
    4.      NSDictionary *userDict = [memberDict objectForKey:messageObj.senderId];
    5.     [message setText:messageObj.body];
    6.  
    7.     CGRect BGframeintial = backgoundView.frame;
    8.     BGframeintial.size.width = MIN_WIDTH + 10;
    9.     backgoundView.frame = BGframeintial;
    10.  
    11.     CGRect messgframeintial = message.frame;
    12.     messgframeintial.size.width = MIN_WIDTH;
    13.     message.frame = messgframeintial;
    14.  
    15. //    message.numberOfLines = 1;
    16.  
    17.     [message sizeToFit];
    18.     [self checkForMaxLimit];
    19.     [message sizeToFit];
    20.  
    21.     [self setFrameForCell:isCurrentUser];
    22.  
    23.     NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    24. //    [formatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZ"];
    25. //    NSDate *date = [formatter dateFromString:[dict valueForKey:@"time"]];
    26.  
    27.     NSDate *date = messageObj.timeObject;
    28.     if (date == nil) {
    29.         [formatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZ"];
    30.         date = [formatter dateFromString:messageObj.timeStamp];
    31.     }
    32.  
    33.     [formatter setDateFormat:@"MMM,dd hh:mm a"];
    34.     NSString *chatTime = [formatter stringFromDate:date];
    35.     [time setText:chatTime];
    36.     [time setFont:[UIFont systemFontOfSize:8]];
    37.  
    38.     [userName setText:[userDict objectForKey:@"name"]];
    39.  
    40.     [userImage setImageFromUrl:[userDict objectForKey:@"url"] borderColor:[UIColor whiteColor]];
    41.  
    42.     [self setBackgroundColor:[UIColor clearColor]];
    43.     [self setSelectionStyle:UITableViewCellSelectionStyleNone];
    44. }
    45.  
    46. -(void)setFrameForCell:(BOOL)iscurrentUser{
    47.     CGRect frame = backgoundView.frame;
    48.     frame.size.height = message.frame.size.height + 18;
    49.     frame.size.width = message.frame.size.width + 10;
    50.  
    51.  
    52.     if (iscurrentUser) {
    53.         frame.origin.x = (CURENT_USER_LIMITED - frame.size.width);
    54.  
    55.         CGRect messgframeintial = message.frame;
    56.         messgframeintial.origin.x = frame.origin.x + 5;
    57.         message.frame = messgframeintial;
    58.  
    59.     }
    60.     backgoundView.frame = frame;
    61.  
    62.     frame = time.frame;
    63.     frame.origin.y = backgoundView.frame.origin.y + backgoundView.frame.size.height+10 - 20;
    64.     time.frame = frame;
    65.  
    66.     backgoundView.layer.cornerRadius = 5;
    67. }
    68.  
    69. -(void)checkForMaxLimit{
    70.     CGSize labelSize = [message.text sizeWithFont:message.font
    71.                                 constrainedToSize:message.frame.size
    72.                                     lineBreakMode:NSLineBreakByWordWrapping];
    73.     int numberOfLine  =  ceilf(labelSize.height);
    74.  
    75.     if (numberOfLine/17 > 4) {
    76.         CGRect BGframeintial = backgoundView.frame;
    77.         BGframeintial.size.width = MAX_WIDTH + 10;
    78.         backgoundView.frame = BGframeintial;
    79.         CGRect messgframeintial = message.frame;
    80.         messgframeintial.size.width = MAX_WIDTH;
    81.         message.frame = messgframeintial;
    82.  
    83.     }
    84.  
    85.  
    86. }
    iphone
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