本文实例为大家分享了ios实现拖拽view跟随手指浮动的具体代码，供大家参考，具体内容如下
效果图：
1.自定义要跟随手指浮动的那个view
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//
// orangeview.m
// 拖拽view跟随手指浮动
//
// created by llkj on 2017/8/16.
// copyright © 2017年 laynecheung. all rights reserved.
//
#import "orangeview.h"
@implementation orangeview
//当开始触摸屏幕的时候调用
- (void)touchesbegan:(nsset<uitouch *> *)touches withevent:(uievent *)event{
nslog(@"%s", __func__);
}
//触摸时开始移动时调用(移动时会持续调用)
//nsset:无序
//nsarray:有序
- (void)touchesmoved:(nsset<uitouch *> *)touches withevent:(uievent *)event{
nslog(@"%s", __func__);
uitouch *touch = [touches anyobject];
//求偏移量 = 手指当前点的x - 手指上一个点的x
cgpoint currentpoint = [touch locationinview:self];
cgpoint prepoint = [touch previouslocationinview:self];
nslog(@"ccurrentpoint = %@", nsstringfromcgpoint(currentpoint));
nslog(@"prepiont = %@", nsstringfromcgpoint(prepoint));
cgfloat offsetx = currentpoint.x - prepoint.x;
cgfloat offsety = currentpoint.y - prepoint.y;
//平移
self.transform = cgaffinetransformtranslate(self.transform, offsetx, offsety);
}
//当手指离开屏幕时调用
-(void)touchesended:(nsset<uitouch *> *)touches withevent:(uievent *)event{
nslog(@"%s", __func__);
}
//当发生系统事件时就会调用该方法(电话打入,自动关机)
- (void)touchescancelled:(nsset<uitouch *> *)touches withevent:(uievent *)event{
nslog(@"%s", __func__);
}
@end
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2.创建自定义的view
在storyboard中拖一个view绑定他的类为orangeview；
或者代码创建手动添加到控制器的view上去；
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/u010981736/article/details/77309449