本文实例为大家分享了ios实现九宫格连线手势解锁的具体代码，供大家参考，具体内容如下
效果图：
核心代码：
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//
// clockview.m
// 手势解锁
//
// created by llkj on 2017/8/24.
// copyright © 2017年 laynecheung. all rights reserved.
//
#import "clockview.h"
@interface clockview ()
//存放当前选中的按钮
@property (nonatomic, strong) nsmutablearray *selectbtnarry;
//当前手指所在点
@property (nonatomic, assign) cgpoint curp;
@end
@implementation clockview
- (void)awakefromnib{
[super awakefromnib];
//初始化
[self setup];
}
- (nsmutablearray *)selectbtnarry{
if (_selectbtnarry == nil) {
_selectbtnarry = [nsmutablearray array];
}
return _selectbtnarry;
}
- (void)setup{
for (int i = 0; i < 9; i ++) {
//创建按钮
uibutton *btn = [uibutton buttonwithtype:uibuttontypecustom];
btn.tag = i;
btn.userinteractionenabled = no;
[btn setimage:[uiimage imagenamed:@"gesture_node_normal"] forstate:uicontrolstatenormal];
[btn setimage:[uiimage imagenamed:@"gesture_node_selected"] forstate:uicontrolstateselected];
[self addsubview:btn];
}
}
//获取当前点
- (cgpoint)getcurrentpoint:(nsset *)point{
uitouch *touch = [point anyobject];
return [touch locationinview:self];
}
//返回按钮
- (uibutton *)btnrectcontainspoint:(cgpoint)point{
//遍历brn判断当前点在不在btn上
for (uibutton *btn in self.subviews) {
if (cgrectcontainspoint(btn.frame, point)) {
return btn;
}
}
return nil;
}
- (void)touchesbegan:(nsset<uitouch *> *)touches withevent:(uievent *)event{
//1.获取当前点
cgpoint curp = [self getcurrentpoint:touches];
//2.判断当前点在不在btn上
uibutton *btn = [self btnrectcontainspoint:curp];
if (btn && btn.selected == no) {
btn.selected = yes;
//保存选中的按钮
[self.selectbtnarry addobject:btn];
}
}
- (void)touchesmoved:(nsset<uitouch *> *)touches withevent:(uievent *)event{
//1.获取当前点
cgpoint curp = [self getcurrentpoint:touches];
self.curp = curp;
//2.判断当前点在不在btn上
uibutton *btn = [self btnrectcontainspoint:curp];
if (btn && btn.selected == no) {
btn.selected = yes;
//保存选中的按钮
[self.selectbtnarry addobject:btn];
}
//重绘
[self setneedsdisplay];
}
- (void)touchesended:(nsset<uitouch *> *)touches withevent:(uievent *)event{
nsmutablestring *str = [nsmutablestring string];
//1.取消所有选中的按钮
for (uibutton *btn in self.selectbtnarry) {
btn.selected = no;
[str appendformat:@"%ld", btn.tag];
}
//2.清空路径
[self.selectbtnarry removeallobjects];
[self setneedsdisplay];
//查看是否是第一次设置密码
nsstring *keypwd = [[nsuserdefaults standarduserdefaults] objectforkey:@"keypwd"];
if (!keypwd) {
[[nsuserdefaults standarduserdefaults] setobject:str forkey:@"keypwd"];
[[nsuserdefaults standarduserdefaults] synchronize];
uialertview *alertv = [[uialertview alloc] initwithtitle:@"第一次设置密码成功" message:nil delegate:nil cancelbuttontitle:@"确定" otherbuttontitles:nil, nil];
[alertv show];
nslog(@"第一次输入密码");
}else{
if ([keypwd isequaltostring:str]) {
nslog(@"密码正确");
uialertview *alertv = [[uialertview alloc] initwithtitle:@"手势输入正确" message:nil delegate:nil cancelbuttontitle:@"确定" otherbuttontitles:nil, nil];
[alertv show];
}else{
nslog(@"密码错误");
uialertview *alertv = [[uialertview alloc] initwithtitle:@"手势输入错误" message:nil delegate:nil cancelbuttontitle:@"确定" otherbuttontitles:nil, nil];
[alertv show];
}
}
//3.查看当前选中按钮的顺序
nslog(@"选中按钮顺序为:%@",str);
}
- (void)drawrect:(cgrect)rect{
if (self.selectbtnarry.count) {
//1.创建路径
uibezierpath *path = [uibezierpath bezierpath];
//2.取出所有保存的按钮
for (int i = 0; i < self.selectbtnarry.count; i ++) {
uibutton *btn = self.selectbtnarry[i];
//当前按钮是不是第一个按钮
if (i == 0) {
//设置成路径的起点
[path movetopoint:btn.center];
} else {
//添加一根线到按钮中心
[path addlinetopoint:btn.center];
}
}
//添加一根线到当前手指所在点
[path addlinetopoint:self.curp];
//设置线宽/颜色
[path setlinewidth:5];
[[uicolor whitecolor] set];
[path setlinejoinstyle:kcglinejoinround];
//3.绘制路径
[path stroke];
}
}
- (void)layoutsubviews{
[super layoutsubviews];
cgfloat x = 0;
cgfloat y = 0;
cgfloat btnwh = 75;
int column = 3;
int margin = (self.bounds.size.width - (column * btnwh)) / (column + 1);
int currentcolumn = 0;
int currentrow = 0;
for (int i = 0; i < self.subviews.count; i ++) {
// 求当前所在的列
currentcolumn = i % column;
// 求当前所在的行
currentrow = i / column;
x = margin + (btnwh + margin) * currentcolumn;
y = margin + (btnwh + margin) * currentrow;
uibutton *btn = self.subviews[i];
btn.frame = cgrectmake(x, y, btnwh, btnwh);
}
}
@end
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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快网idc。
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