Google Analytics（分析）iOS按钮跟踪

Question

I am trying to track how many times users tap a certain button by using Google Analytics. I was following the Google Analytics SDK, but I am getting an "Use of Undeclared Idtenifier 'CallHotline'" error, With the following code:

[[tracker sendEventWithCategory:@"uiAction"
                    withAction:@"buttonPress"
                     withLabel:callHotline
                     withValue:[NSNumber numberWithInt:100]]; 

Answer 1

is 'callHotline' a string literal? then use:

[tracker sendEventWithCategory:@"uiAction"
                    withAction:@"buttonPress"
                     withLabel:@"callHotline"
                     withValue:[NSNumber numberWithInt:100]];

the Category , Action , and Label fields are all strings.

Note that in the code you provided, you also had an unnecessary [ at the start of the line.