Usage of addtarget in iOS

1.addtarget. Some use events do not have a direct operation and need to be called. We'll use Addtarget.

-(void) Setupcustomview {

self. CustomView = [[chview alloc] init];

self. CustomView. translatesautoresizingmaskintoconstraints = NO;

[self. View addsubview:selfcustomview];

nsdictionary *viewsdictionary = @{ @ "toplayoutguide": Self . Toplayoutguide,

@ "CustomView": Self . CustomView

};

[self. View addconstraints: [nslayoutconstraint constraintswithvisualformat:@ "v:|[ toplayoutguide][customview]| "

options:0

metrics:Nil

Views:viewsdictionary]];

[self. View addconstraints: [nslayoutconstraint constraintswithvisualformat:@ "h:|[ customview]| "

options:0

metrics:Nil

Views:viewsdictionary]];

[self setupsliders];

[self updatecolors];

[self setuptargetactions];

}

-(void) Setupsliders {

self. CustomView. Trackwidthslider. MaximumValue = 100.0;

self. CustomView. Gaugewidthslider. MaximumValue = 100.0;

self. CustomView. Valueslider.value = self. CustomView. Gauge. Value ;

self. CustomView. Trackwidthslider.value = self. CustomView. Gauge. trackwidth ;

self. CustomView. Gaugewidthslider.value = self. CustomView. Gauge. Gaugewidth;

    self.customview.text = [self Formattedstringforfloatvalue:(self.customview .gauge.value * 100

self. CustomView. Trackwidthsliderlabel. Text = [self formattedstringforfloatvalue: Self . CustomView. Gaugetrackwidth];

self. CustomView. Gaugewidthsliderlabel. Text = [ self Formattedstringforfloatvalue:selfcustomview. Gauge. Gaugewidth];

self. CustomView. Valueslider. Continuous = NO;

self. CustomView. Trackwidthslider. Continuous = NO;

self. CustomView. Gaugewidthslider. Continuous = NO;

}

-(void) updatecolors {

self. CustomView. Valuecolorindicatorview.backgroundcolor = self. CustomView. Gauge . TextColor;

self. CustomView. Trackcolorindicatorview. BackgroundColor = self. CustomView . Gauge. Tracktintcolor;

self. CustomView. Gaugecolorindicatorview.backgroundcolor = self. CustomView. Gauge . Gaugetintcolor;

}

-(void) setuptargetactions {

UITapGestureRecognizer *tapgesturerecognizer = [[uitapgesturerecognizer alloc] initwithtarget: Self action:@selector (changestate:)];

[self. CustomView. Gauge addgesturerecognizer: Tapgesturerecognizer];

[self. CustomView. Gaugestyleswitch addTarget:self Action:@selector (Changeguagestyle:) forcontrolevents: uicontroleventvaluechanged];

[self. CustomView. Valueslider addTarget:self Action:@selector( Valuesliderchangedvalue:) forcontrolevents: uicontroleventvaluechanged];

[self. CustomView. Trackwidthslider addTarget:self Action:@selector (trackwidthsliderchangedvalue:) forcontrolevents: uicontroleventvaluechanged];

[self. CustomView. Gaugewidthslider addTarget:self Action:@selector( Gaugewidthsliderchangedvalue:) forcontrolevents: uicontroleventvaluechanged];

Tapgesturerecognizer = [[uitapgesturerecognizer alloc] initwithtarget:self action:@ Selector (changevaluecolor:)];

[self. CustomView. Valuecolorindicatorview addgesturerecognizer: Tapgesturerecognizer];

Tapgesturerecognizer = [[uitapgesturerecognizer alloc] initwithtarget:self action:@ Selector (changetrackcolor:)];

[self. CustomView. Trackcolorindicatorview addgesturerecognizer: Tapgesturerecognizer];

Tapgesturerecognizer = [[uitapgesturerecognizer alloc] initwithtarget:self action:@selector (Changegaugecolor:)];

[self. CustomView. Gaugecolorindicatorview addgesturerecognizer: Tapgesturerecognizer];

}

#pragma mark-action Methods

-(void) Changestate: (UITapGestureRecognizer *) Tapgesturerecognizer {

if (customview.gauge. State! = Chcirclegaugeviewstatena) {

self. CustomView. Gauge state = Chcirclegaugeviewstatena;

} Else {

[self. CustomView. Gauge setValue:self. CustomView. Gauge. Value Animated :YES];

}

}

Usage of addtarget in iOS