iOS swipe to unlock/swipe to get Verification code effect implementation

Recently, SMS service providers require the company's app in the acquisition of SMS verification code, plus check code, the current is more popular is the use of similar sliding to unlock the way, our company took this way, the design diagram is as follows:

Here check the internal processing logic is not introduced, the main share of the interface effect of implementation, the following paste code:

First sub-class UISlider

#import <UIKit/UIKit.h>#define sliderwidth#define sliderheight#define sliderlabeltextcolor [Uicolor colorwithred:193/255.0 green:193/255.0 blue:193/255.0 alpha:1] #define sliderlabelbordercolor [Uicolor colorwithred:193/255.0 green:193/255.0 blue:193/255.0 alpha:1]. Cgcolor#define Sliderminimumtracktintcolor [Uicolor Redcolor]#define Sliderlabelfont#define sliderlabeltext @ "swipe to unlock/Get verification Code"#define thumbimagewidth#define thumbimageheight@InterfaceCheckcodeslider:uislider@end//*******************************************************#import "CheckCodeSlider.h"@implementation Checkcodeslider//Overwrite parent class UISlider method change Slider frame-(CGRect) Trackrectforbounds: (CGRect) bounds{returnCGRectMake (0,0, Sliderwidth, sliderheight);} @end

Then instantiate Checkcodeslider, which is written in a viewcontroller.

#import "ViewController.h"#import "CheckCodeSlider.h"@interface Viewcontroller () {Uiimageview *imgview;} @property (Nonatomic, strong) Checkcodeslider *slider;@property (nonatomic, strong) UILabel *label;@end @implementation viewcontroller-(void) viewdidload {[Super Viewdidload];Self. View. BackgroundColor= [Uicolor Whitecolor];[Self Createslider];}-(void) createslider{_slider = [[Checkcodeslider alloc]initwithframe:cgrectmake (0,0, Sliderwidth, Sliderheight)];_slider. Center= Self. View. Center;_slider. Minimumtracktintcolor= [Uicolor Clearcolor];_slider. Maximumtracktintcolor= [Uicolor Clearcolor];_slider. Layer. Maskstobounds= YES;_slider. Layer. Cornerradius= sliderheight/2;[_slider setthumbimage:[uiimage imagenamed:@"Slider Button"] Forstate:uicontrolstatenormal];[_slider addtarget:self Action: @selector (slidervaluechanged:) forcontrolevents:uicontroleventvaluechanged];[Self. ViewAddsubview:_slider];_label = [[UILabel alloc]initwithframe:cgrectmake (0,0, Sliderwidth, Sliderheight)];_label. Center= Self. View. Center;_label. Text= Sliderlabeltext;_label. Font= [Uifont Systemfontofsize:sliderlabelfont];_label. TextAlignment= Nstextalignmentcenter;_label. TextColor= Sliderlabeltextcolor;_label. Layer. Maskstobounds= YES;_label. Layer. Cornerradius= sliderheight/2;_label. Layer. BorderWidth=1;_label. Layer. BorderColor= Sliderlabelbordercolor;[Self. ViewAddsubview:_label];This creates a imageview that is the same as the slider to cover the text and slide it along the slider in the Slidervaluechanged method. Imgview = [[Uiimageview alloc]initwithframe:cgrectmake (_slider. Frame. Origin. x-2, _slider. Frame. Origin. Y-2, thumbimagewidth+4, thumbimageheight+4)];Imgview. Image= [UIImage imagenamed:@"Slider Button"];[Self. ViewAddsubview:imgview];}-(void) slidervaluechanged: (UISlider *) slider{[_slider Setvalue:slider. ValueAnimated:no];if (slider. Value>0) {_slider. Minimumtracktintcolor= Sliderminimumtracktintcolor;}else{_slider. Minimumtracktintcolor= [Uicolor Clearcolor];} Imgview. Center= Cgpointmake (_slider. Frame. Origin. x+slider. Value* (sliderwidth-thumbimagewidth) +thumbimagewidth/2, _slider. Frame. Origin. Y+thumbimageheight/2);if (!slider. istracking&& Slider. Value!=1) {[_slider setValue:0Animated:yes];if (slider. Value>0) {_slider. Minimumtracktintcolor= Sliderminimumtracktintcolor;}else{_slider. Minimumtracktintcolor= [Uicolor Clearcolor];} Imgview. Frame= CGRectMake (_slider. Frame. Origin. x-2, _slider. Frame. Origin. Y-2, thumbimagewidth+4, thumbimageheight+4);}}

This can be achieved in the effect, only need to slidervaluechanged according to the value of the slider to do the corresponding processing on the line.

iOS swipe to unlock/swipe to get Verification code effect implementation