In the last post, the blogger enclosed a slider with a relatively high height. At that time, I would like to use the navigation, but I found that I would not be skilled in using it. Therefore, I will retrieve the navigation in the Demo today.
//
// MySlider.m
// MySlider
//
// Created by 刘浩浩 on 16/7/21.
// Copyright © 2016年 CodingFire. All rights reserved.
//
#import "MySlider.h"
@interface MySlider()
{
UIView *lastView;
CGFloat currentX;
CGPoint clickCenter;
NSString *type;
}
@property(nonatomic,strong)UIView *baseView;
/**
* slier背景
*/
@property(nonatomic,strong)UIView *preSliderView;
/**
* slider覆盖颜色
*/
@property(nonatomic,strong)UIView *lastSliderView;
/**
* 滑块
*/
@property(nonatomic,strong)UIButton *sliderBtn;
/**
* 模糊点击区域按钮
*/
@property(nonatomic,strong)UIButton *expandBtn;
@end
@implementation MySlider
- (id)init {
self = [super init];
if (!self) return nil;
[self setSlierUI];
return self;
}
- (void)setSlierUI
{
lastView = self;
// lastView.backgroundColor = [UIColor redColor];
_baseView = [[UIView alloc]init];
[self addSubview:_baseView];
_preSliderView = [[UIView alloc]init];
_preSliderView.layer.cornerRadius = 10;
_preSliderView.backgroundColor = [UIColor grayColor];
_preSliderView.clipsToBounds = YES;
[_baseView addSubview:_preSliderView];
_lastSliderView = [[UIView alloc]init];
_lastSliderView.backgroundColor = [UIColor blueColor];
[_preSliderView addSubview:_lastSliderView];
UITapGestureRecognizer *tapGes = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapMoving:)];
[_preSliderView addGestureRecognizer:tapGes];
_sliderBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
_sliderBtn.backgroundColor = [UIColor lightGrayColor];
if (_slImage == nil) {
_sliderBtn.layer.borderWidth = 0.5;
_sliderBtn.layer.borderColor = [UIColor grayColor].CGColor;
_sliderBtn.backgroundColor = [UIColor lightGrayColor];
}
else
{
[_sliderBtn setImage:_slImage forState:UIControlStateNormal];
}
_sliderBtn.userInteractionEnabled = YES;
_sliderBtn.layer.cornerRadius = _widthSameHeight / 2;
[_sliderBtn addTarget:self action:@selector(dragMoving:withEvent:)forControlEvents: UIControlEventTouchDragInside];
[_baseView addSubview:_sliderBtn];
_expandBtn = [UIButton buttonWithType:UIButtonTypeSystem];
_expandBtn.center = _sliderBtn.center;
[_expandBtn addTarget:self action:@selector(dragMoving:withEvent:)forControlEvents: UIControlEventTouchDragInside];
[_baseView addSubview:_expandBtn];
[_baseView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.and.top.and.right.and.bottom.equalTo(lastView);
}];
[_preSliderView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.and.right.equalTo(lastView);
make.center.equalTo(lastView);
make.height.mas_equalTo(_slHeight);
make.width.equalTo(lastView.mas_width);
}];
[_lastSliderView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.and.top.and.bottom.equalTo(_preSliderView);
make.height.equalTo(_preSliderView.mas_height);
make.width.equalTo(_preSliderView.mas_width).multipliedBy(0.5);
make.centerY.equalTo(_preSliderView.mas_centerY);
}];
[_sliderBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.centerY.equalTo(_lastSliderView);
make.width.and.height.mas_equalTo(20);
make.left.equalTo(_lastSliderView.mas_right).offset(-20 / 2);
}];
[_expandBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.centerY.equalTo(_lastSliderView);
make.left.equalTo(_lastSliderView).offset(-20);
make.width.and.height.mas_equalTo(20 * 2);
}];
}
- (void)tapMoving:(UITapGestureRecognizer *)tap
{
CGPoint point = [tap locationInView:_preSliderView];
currentX = point.x;
type = @"tap";
// 告诉self.view约束需要更新
[self setNeedsUpdateConstraints];
// 调用此方法告诉self.view检测是否需要更新约束，若需要则更新，下面添加动画效果才起作用
[self updateConstraintsIfNeeded];
[self layoutIfNeeded];
}
- (void)updateConstraints
{
if ([type isEqualToString:@"nottap"]) {
[_preSliderView mas_remakeConstraints:^(MASConstraintMaker *make) {
make.left.and.right.equalTo(lastView);
make.center.equalTo(lastView);
make.height.mas_equalTo(_slHeight);
make.width.equalTo(lastView.mas_width);
}];
[_lastSliderView mas_remakeConstraints:^(MASConstraintMaker *make) {
make.left.and.top.and.bottom.equalTo(_preSliderView);
make.height.equalTo(_preSliderView.mas_height);
make.width.equalTo(_preSliderView.mas_width).multipliedBy(_value);
make.centerY.equalTo(_preSliderView.mas_centerY);
}];
[_sliderBtn mas_remakeConstraints:^(MASConstraintMaker *make) {
make.centerY.equalTo(_lastSliderView);
make.width.and.height.mas_equalTo(_widthSameHeight);
make.left.equalTo(_lastSliderView.mas_right).offset(-_widthSameHeight / 2);
}];
[_expandBtn mas_remakeConstraints:^(MASConstraintMaker *make) {
make.centerY.equalTo(_lastSliderView);
make.width.height.mas_equalTo(_widthSameHeight * 2);
make.left.equalTo(_lastSliderView.mas_right).offset(-_widthSameHeight);
}];
}
if ([type isEqualToString:@"tap"]) {
[_lastSliderView mas_remakeConstraints:^(MASConstraintMaker *make) {
make.left.and.top.and.bottom.equalTo(_preSliderView);
make.height.equalTo(_preSliderView.mas_height);
make.width.mas_equalTo(currentX);
make.centerY.equalTo(_preSliderView.mas_centerY);
}];
[_sliderBtn mas_remakeConstraints:^(MASConstraintMaker *make) {
make.centerY.equalTo(_lastSliderView);
make.width.and.height.mas_equalTo(_widthSameHeight);
make.left.mas_equalTo(currentX - _widthSameHeight / 2);
}];
[_expandBtn mas_remakeConstraints:^(MASConstraintMaker *make) {
make.centerY.equalTo(_lastSliderView);
make.width.and.height.mas_equalTo(_widthSameHeight * 2);
make.left.mas_equalTo(currentX - _widthSameHeight * 2 / 2);
}];
}
[super updateConstraints];
}
- (void)dragMoving: (UIButton *)btn withEvent:(UIEvent *)event
{
CGPoint point = [[[event allTouches] anyObject] locationInView:self];
CGFloat x = point.x;
if(x <= _widthSameHeight / 2)
{
point.x = _widthSameHeight / 2;
}
if(x >= self.bounds.size.width - _widthSameHeight / 2)
{
point.x = self.bounds.size.width - _widthSameHeight / 2;
}
point.y = self.frame.size.height / 2;
currentX = point.x;
type = @"tap";
// 告诉self.view约束需要更新
[self setNeedsUpdateConstraints];
// 调用此方法告诉self.view检测是否需要更新约束，若需要则更新，下面添加动画效果才起作用
[self updateConstraintsIfNeeded];
[self layoutIfNeeded];
}
- (void)setValue:(CGFloat)value
{
_value = value;
type = @"nottap";
// 告诉self.view约束需要更新
[self setNeedsUpdateConstraints];
// 调用此方法告诉self.view检测是否需要更新约束，若需要则更新，下面添加动画效果才起作用
[self updateConstraintsIfNeeded];
[self layoutIfNeeded];
}
- (void)setSlImage:(UIImage *)slImage
{
_slImage = slImage;
[_sliderBtn setImage:_slImage forState:UIControlStateNormal];
}
- (void)setSlHeight:(CGFloat)slHeight
{
_slHeight = slHeight;
if (_slHeight >= 2 && _slHeight <= 20) {
type = @"nottap";
// 告诉self.view约束需要更新
[self setNeedsUpdateConstraints];
// 调用此方法告诉self.view检测是否需要更新约束，若需要则更新，下面添加动画效果才起作用
[self updateConstraintsIfNeeded];
[self layoutIfNeeded];
}
}
- (void)setPreBackgroundColor:(UIColor *)preBackgroundColor
{
_preBackgroundColor = preBackgroundColor;
_preSliderView.backgroundColor = _preBackgroundColor;
}
- (void)setLastBackgroundColor:(UIColor *)lastBackgroundColor
{
_lastBackgroundColor = lastBackgroundColor;
_lastSliderView.backgroundColor = _lastBackgroundColor;
}
- (void)setWidthSameHeight:(CGFloat)widthSameHeight
{
_widthSameHeight = widthSameHeight;
type = @"nottap";
_sliderBtn.layer.cornerRadius = _widthSameHeight / 2;
// 告诉self.view约束需要更新
[self setNeedsUpdateConstraints];
// 调用此方法告诉self.view检测是否需要更新约束，若需要则更新，下面添加动画效果才起作用
[self updateConstraintsIfNeeded];
[self layoutIfNeeded];
}
- (void)setSliderBackgroundColor:(UIColor *)sliderBackgroundColor
{
_sliderBackgroundColor = sliderBackgroundColor;
_sliderBtn.backgroundColor = _sliderBackgroundColor;
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
}
*/
@end
Copy the codeAdd constraints and not imagined so simple, only really start to do it to know which easy to mistake, but the use of skilled really quite convenient, what do not understand the constraints here please leave a message or their own Baidu. Demo download address: github.com/codeliu6572…