logging - Log every button press / interaction in an iOS App -

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is there way catch sorts of user interactions, first , foremost button presses in ios app? i'm interested in logging these events time stamp , ideally name of screen appear on.

i guess simplest way insert call of custom log function every action called button. that's effort.

i thought subclassing uibutton, still require me change every button in existing app , work buttons (not cells in table example).

is there point can intercept touches in general? or point know button pressed , i've reference button?

(we research usability testing of mobile apps, aim @ modular solution can reused , needs little manual changes of code possible. suggestions welcome, since realize might not easy.)

you can subclass uiapplication:

  • create uiapplication subclass
  • override -(bool)sendaction:(sel)action to:(id)target from:(id)sender forevent:(uievent *)event method, remember call super implementation
  • put nslog or other diagnostic code inside implementation

example, print log every time uibutton pressed:

-(bool)sendaction:(sel)action to:(id)target from:(id)sender forevent:(uievent *)event {     if ([sender iskindofclass:[uibutton class]])     {         nslog(@"action: %@ - %@ - %@", nsstringfromselector(action), target, sender);     }      return [super sendaction:action to:target from:sender forevent:event]; }   2013-07-08 14:46:18.270 uiapplicationsubclass[94764:c07] action: anaction: - <viewcontroller: 0x76790a0> - <uiroundedrectbutton: 0x767b9b0; frame = (103 66; 73 44); opaque = no; autoresize = tm+bm; layer = <calayer: 0x767bad0>> 2013-07-08 14:46:27.378 uiapplicationsubclass[94764:c07] action: anaction: - <viewcontroller: 0x76790a0> - <uiroundedrectbutton: 0x767b9b0; frame = (103 66; 73 44); opaque = no; autoresize = tm+bm; layer = <calayer: 0x767bad0>>

moreover, subclass uiapplication, must change main.m file (in case uiapplication subclass named flapplication, @ third parameter of uiapplicationmain function , import of flapplication.h)

#import "appdelegate.h" #import "flapplication.h"  int main(int argc, char *argv[]) {     @autoreleasepool {         return uiapplicationmain(argc, argv, nsstringfromclass([flapplication class]), nsstringfromclass([appdelegate class]));     } }

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