仿苹果Assistive Touch

来源：互联网发布：windows 10控制面板编辑：程序博客网时间：2024/05/01 08:42

简单的实现苹果Assistive Touch。

自定义按钮：

////  YFAssistiveButton.m//  仿 Assistive Touch////  Created by dev on 16/6/21.//  Copyright © 2016年 SWALLE. All rights reserved.//#import "YFAssistiveButton.h"@interface YFAssistiveButton(){    CGPoint _beginPoint;}@end@implementation YFAssistiveButton-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{    [super touchesBegan:touches withEvent:event];    UITouch *touch = [touches anyObject];        _beginPoint = [touch locationInView:self];}-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{    UITouch *touvh = [touches anyObject];    CGPoint currentPoint = [touvh locationInView:self];        CGFloat X = currentPoint.x - _beginPoint.x;    CGFloat Y = currentPoint.y - _beginPoint.y;    self.center = CGPointMake(self.center.x + X, self.center.y + Y);}-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{    CGFloat W = self.frame.size.width/2 ;    CGFloat H = self.frame.size.height/2;    CGFloat KScreenW = [UIScreen mainScreen].bounds.size.width;    CGFloat KScreenH = [UIScreen mainScreen].bounds.size.height;        CGFloat margenTop = self.center.y;    CGFloat margenBottom = KScreenH - self.center.y;    [UIView animateWithDuration:.2 animations:^{        if (margenTop < 160) {            self.center = CGPointMake(self.center.x + W, H);            return;        }else if (margenBottom < 160){            self.center = CGPointMake(self.center.x + W, KScreenH - H);            return;        }else{            if (self.center.x < KScreenW/2) {                self.center = CGPointMake(W, self.center.y);                return;            }else if (self.center.x > KScreenW/2){                self.center = CGPointMake(KScreenW - W, self.center.y);                return;            }        }    }];            }@end

在控制器里面初始化自定义按钮

self.view.backgroundColor = [UIColor grayColor];    YFAssistiveButton *btn = [YFAssistiveButton buttonWithType:UIButtonTypeSystem];    _btn = btn;    btn.layer.cornerRadius = 5;    btn.frame = CGRectMake(5, 100, 50, 50);    [btn setBackgroundImage:[UIImage imageNamed:@"Assistive Touch"] forState:UIControlStateNormal];        [self.view addSubview:btn];

0 0