IOS 闪屏实现

启动时闪屏的组成

• Luanch Screen + Splash Screen

1. Luanch Screen 启动屏（系统级）

• 在 Main 函数之前 + didFinshLaunch 前
• 系统启动 App 自动展示
• 在准备好 App UI 数据后自动消失

如何设置系统启动页？
1-1. 在Assets.xcassets 中右键创建，创建名为LuanchImage的文件

1 2

1-2. 在工程 Build Settings 搜索 Asset Catalog Launch Image Set Name ，然后把值设置为新建的图片名字即可

image.png

1-3. 在项目 Info.plist 删除 Launch screen interface file base name 并添加 LaunchImage 并设置 LaunchImage

image.png

2. Splash Screen 闪屏（业务逻辑）

• Launch Screen 展示时间短，不能看清
• 实现同样的图片，显示图标等信息
• 实现广告/推广活动页面

如何添加？
在 window 添加一层 View

AppDelegate -》 didFinishLaunchingWithOptions（）

//  添加
[self.window addSubview:({
        GTSplashView *splashView = [[GTSplashView alloc] initWithFrame:self.window.bounds];
        splashView;
    })];

//  GTSplashView  类
#import "GTSplashView.h"
#import "GTScreen.h"

@interface GTSplashView ()

@property(nonatomic,strong,readwrite)UIButton *button;
@property(nonatomic,strong,readwrite)UIImageView *imageView;
@end

@implementation GTSplashView

-(instancetype) initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    if(self){
        self.backgroundColor = [UIColor whiteColor];
        self.image = [UIImage imageNamed:@"icon.bundle/remmber_water2.png"];
        [self addSubview:({
            // _imageView = [UIImage imageNamed:@"icon.bundle/splash_tip.png"];
            _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(UI(30), frame.size.height/2-UI(50)/2, frame.size.width-UI(60),UI(50))];
            [_imageView setImage:[UIImage imageNamed:@"icon.bundle/splash_tip.png"]];
            _imageView;
        })];
        
        [self addSubview:({
            _button = [[UIButton alloc] initWithFrame:UIRect(330,100,60,40)];
            _button.backgroundColor = [UIColor lightGrayColor];
            [_button setTitle:@"跳过" forState:UIControlStateNormal];
            [_button addTarget:self action:@selector(_removeSplashView) forControlEvents:UIControlEventTouchUpInside];
            _button;
        })];
        
        
        self.userInteractionEnabled = YES;
    }
    return self;
}

-(void)_removeSplashView{
    [self removeFromSuperview];
}

@end

更多详细的代码
github