iOS-启动动态页跳过设计思路 立即下载
代码下载地址:
http://www.demodashi.com/demo/10700.html
我们都知道 APP启动时加载的是LaunchImage 这张静态图。现在好多应用启动时都是动态的,并且右上角可选择跳过。
这里介绍一下自己在做这种动画时的一种方案。
启动图依然是加载的,只不过是一闪而过,这时候我想到的是拿到当前的LaunchImage图片,然后进行处理,造成一种改变了LaunchImage动画的假象。
思路如下:
根据UIBezierPath和CAShapeLayer自定义倒计时进度条,适用于app启动的时候设置一个倒计时关闭启动页面。可以设置进度条颜色,填充颜色,进度条宽度以及点击事件等。
一、设置跳过按钮
ZLDrawCircleProgressBtn.h:
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/**
* set complete callback
*
* @param lineWidth line width
* @param block block
* @param duration time
*/
- ( void )startAnimationDuration:(CGFloat)duration withBlock:(DrawCircleProgressBlock )block;
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ZLDrawCircleProgressBtn.m :
先初始化相关跳过按钮及进度圈:
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// 底部进度条圈
@property (nonatomic, strong) CAShapeLayer *trackLayer;
// 表层进度条圈
@property (nonatomic, strong) CAShapeLayer *progressLayer;
@property (nonatomic, strong) UIBezierPath *bezierPath;
@property (nonatomic, copy) DrawCircleProgressBlock myBlock;
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- (instancetype)initWithFrame:(CGRect)frame
{
if (self == [super initWithFrame:frame]) {
self.backgroundColor = [UIColor clearColor];
[self.layer addSublayer:self.trackLayer];
}
return self;
}
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- (UIBezierPath *)bezierPath {
if (!_bezierPath) {
CGFloat width = CGRectGetWidth(self.frame)/2.0f;
CGFloat height = CGRectGetHeight(self.frame)/2.0f;
CGPoint centerPoint = CGPointMake(width, height);
float radius = CGRectGetWidth(self.frame)/2;
_bezierPath = [UIBezierPath bezierPathWithArcCenter:centerPoint
radius:radius
startAngle:degreesToRadians(-90)
endAngle:degreesToRadians(270)
clockwise:YES];
}
return _bezierPath;
}
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底部进度条圈:
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- (CAShapeLayer *)trackLayer {
if (!_trackLayer) {
_trackLayer = [CAShapeLayer layer];
_trackLayer.frame = self.bounds;
// 圈内填充色
_trackLayer.fillColor = self.fillColor.CGColor ? self.fillColor.CGColor : [UIColor clearColor].CGColor ;
_trackLayer.lineWidth = self.lineWidth ? self.lineWidth : 2.f;
// 底部圈色
_trackLayer.strokeColor = self.trackColor.CGColor ? self.trackColor.CGColor : [UIColor colorWithRed:197/255.0 green:159/255.0 blue:82/255.0 alpha:0.3].CGColor ;
_trackLayer.strokeStart = 0.f;
_trackLayer.strokeEnd = 1.f;
_trackLayer.path = self.bezierPath.CGPath;
}
return _trackLayer;
}
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表层进度条圈:
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- (CAShapeLayer *)progressLayer {
if (!_progressLayer) {
_progressLayer = [CAShapeLayer layer];
_progressLayer.frame = self.bounds;
_progressLayer.fillColor = [UIColor clearColor].CGColor;
_progressLayer.lineWidth = self.lineWidth ? self.lineWidth : 2.f;
_progressLayer.lineCap = kCALineCapRound;
// 进度条圈进度色
_progressLayer.strokeColor = self.progressColor.CGColor ? self.progressColor.CGColor : [UIColor colorWithRed:197/255.0 green:159/255.0 blue:82/255.0 alpha:1].CGColor;
_progressLayer.strokeStart = 0.f;
CABasicAnimation *pathAnimation = [CABasicAnimation animationWithKeyPath:@ "strokeEnd" ];
pathAnimation.duration = self.animationDuration;
pathAnimation.fromValue = @(0.0);
pathAnimation.toValue = @(1.0);
pathAnimation.removedOnCompletion = YES;
pathAnimation.delegate = self;
[_progressLayer addAnimation:pathAnimation forKey:nil];
_progressLayer.path = _bezierPath.CGPath;
}
return _progressLayer;
}
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设置代理回调:
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#pragma mark -- CAAnimationDelegate
- ( void )animationDidStop:(CAAnimation *)anim finished:( BOOL )flag {
if (flag) {
self.myBlock();
}
}
#pragma mark ---
- ( void )startAnimationDuration:(CGFloat)duration withBlock:(DrawCircleProgressBlock )block {
self.myBlock = block;
self.animationDuration = duration;
[self.layer addSublayer:self.progressLayer];
}
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二、启动页
ZLStartPageView.h :
露出 显示引导页面方法:
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/**
* 显示引导页面方法
*/
- ( void )show;
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ZLStartPageView.m :
-
初始化启动页
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// 启动页图
@property (nonatomic,strong) UIImageView *imageView;
// 跳过按钮
@property (nonatomic, strong) ZLDrawCircleProgressBtn *drawCircleBtn;
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- (instancetype)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
// 1.启动页图片
_imageView = [[UIImageView alloc]initWithFrame:frame];
_imageView.contentMode = UIViewContentModeScaleAspectFill;
_imageView.image = [UIImage imageNamed:@ "LaunchImage_667h" ];
[self addSubview:_imageView];
// 2.跳过按钮
ZLDrawCircleProgressBtn *drawCircleBtn = [[ZLDrawCircleProgressBtn alloc]initWithFrame:CGRectMake(kscreenWidth - 55, 30, 40, 40)];
drawCircleBtn.lineWidth = 2;
[drawCircleBtn setTitle:@ "跳过" forState:UIControlStateNormal];
[drawCircleBtn setTitleColor:[UIColor colorWithRed:197/255.0 green:159/255.0 blue:82/255.0 alpha:1] forState:UIControlStateNormal];
drawCircleBtn.titleLabel.font = [UIFont systemFontOfSize:14];
[drawCircleBtn addTarget:self action:@selector(removeProgress) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:drawCircleBtn];
self.drawCircleBtn = drawCircleBtn;
}
return self;
}
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2. 显示启动页且完成时候回调移除
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- ( void )show {
// progress 完成时候的回调
__weak __typeof(self) weakSelf = self;
[weakSelf.drawCircleBtn startAnimationDuration:showtime withBlock:^{
[weakSelf removeProgress];
}];
UIWindow *window = [UIApplication sharedApplication].keyWindow;
[window addSubview:self];
}
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3. 移除启动页面
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- ( void )removeProgress {
self.imageView.transform = CGAffineTransformMakeScale(1, 1);
self.imageView.alpha = 1;
[UIView animateWithDuration:0.3 animations:^{
self.drawCircleBtn.hidden = NO;
self.imageView.alpha = 0.05;
self.imageView.transform = CGAffineTransformMakeScale(5, 5);
} completion:^( BOOL finished) {
self.drawCircleBtn.hidden = YES;
[self.imageView removeFromSuperview];
}];
}
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三、动态启动页的显示代码放在AppDeleate中
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- ( BOOL )application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:[[HomeViewController alloc] init]];
[self.window makeKeyAndVisible];
[self setupStartPageView];
return YES;
}
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设置启动页:
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- ( void )setupStartPageView {
ZLStartPageView *startPageView = [[ZLStartPageView alloc] initWithFrame:self.window.bounds];
[startPageView show];
}
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这个时候就可以可以测试喽~
四、压缩文件截图
界面性问题可以根据自己项目需求调整即可, 具体可参考代码, 项目能够直接运行!
注:本文著作权归作者,由demo大师(http://www.demodashi.com)宣传,拒绝转载,转载需要作者同意