Custom Implementation Moveable button

Implemented by:

Custom Mvbutton, inherited from UIButton.

The properties are declared as follows:

@property (nonatomic) cgpoint beginpoint; @property (nonatomic) BOOL    dragenable;

Customizing a button to respond to touch events
-(void) Touchesbegan: (Nsset *) touches withevent: (uievent *) event{    //dragenable = no does not respond to action    if (!_dragenable) { C3/>return;    }    Uitouch *touch = [touches anyobject];        Gets the current position of the button    _beginpoint = [Touch locationinview:self];}

　

Responding when you drag a custom button
-(void) touchesmoved: (Nsset *) touches withevent: (uievent *) event{    if (!_dragenable) {        return;    }    Uitouch *touch = [touches anyobject];        Gets the target location to move to    cgpoint nowpoint = [Touch locationinview:self];    
    Determine the offset of the target position and start position    float OffsetX = nowpoint.x-_beginpoint.x;    float OffsetY = nowpoint.y-_beginpoint.x;        Move button    Self.center = cgpointmake (self.center.x + offsetX, Self.center.y + OffsetY) According to the Center property of the button;}

　

The code implemented in VIEWCONTROLLER.M is as follows:

First import the custom button:

#import "MVButton.h"

Specific implementation:

-(void) viewdidload{    [Super Viewdidload];        Mvbutton *mvbutton = [[Mvbutton alloc] Initwithframe:cgrectmake (+, +, +)];    Mvbutton.backgroundcolor = [Uicolor yellowcolor];    mvbutton.dragenable = YES;        [Self.view Addsubview:mvbutton];}

　　

Custom Implementation Moveable button