objective c - How to slowly fill the NSProgressIndicator (Progress Bar) from 0 to 100? -


task: take progress bar (nsprogressindicator) 0 100 smoothly.

problem: progress bar getting 0 100 not smoothly.

what have done yet:

    // scan click on prgress should start -(void)scannowclick:(id)sender {         // setting initial value of progress bar         [progressbar setdoublevalue:0];         // starting timer         [nstimer scheduledtimerwithtimeinterval:0.5                                          target:self                                        selector:@selector(callafter10sec:)                                        userinfo:nil                                         repeats:yes];   }  // timer update progress bar -(void)callafter10sec:(nstimer *)time {      double value = [progressbar doublevalue]+10;      [[progressbar animator] setdoublevalue:value];      if(value >= 100)     {        [time invalidate];     } }

/// layer set

enter image description here

you should use cadisplaylink , not nstimer when dealing ui related updates.

the link called 60 times per second (per refresh rate of screen)

in callback should calculate proportion advance view


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