SwiftUI删除NavigationBar底部边框

Question

使用SwiftUI时，如何删除导航栏的底部1px边框？

Answer 1

我也遇到了这个问题。这是几乎类似的post

但是大多数答案都有副作用。对我来说，最好的解决方案是

UINavigationBar.appearance().barTintColor = .clear
UINavigationBar.appearance().backgroundColor = .clear UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .default)
UINavigationBar.appearance().shadowImage = UIImage()

，并且还希望将UIImage（）设置为shadowImage和bacgroundImage而不是“ nil”很重要。我将导航displayMode设置为内联

.navigationBarTitle(Text(""), displayMode: .inline)

Answer 2

在View的初始化程序中，您可以设置导航栏的外观。在那里，您必须将SELECT stop.stop_id, CASE WHEN COUNT(DISTINCT route.route_type) > 1 THEN 'multiple' WHEN MAX(route.route_type) = 0 THEN 'tram' ELSE 'bus' END AS stop_type FROM stop INNER JOIN stop_time on stop_time.stop_id = stop.stop_id INNER JOIN trip on trip.trip_id = stop_time.trip_id INNER JOIN route on route.route_id = trip.route_id GROUP BY stop.stop_id ORDER BY stop.stop_id 属性设置为let options = { startDate: (new Date(2019,10,25)).toISOString(), endDate: (new Date(2019,11,10)).toISOString(), limit: 10, permissions: { read: ["Height", "Weight", "StepCount", "DateOfBirth", "BodyMassIndex", "ActiveEnergyBurned", "SleepAnalysis"], write: ["Height", "Weight", "StepCount", "BodyMassIndex", "Biotin", "Caffeine", "Calcium", "Carbohydrates", "Chloride", "Cholesterol", "Copper", "EnergyConsumed", "FatMonounsaturated", "FatPolyunsaturated", "FatSaturated", "FatTotal", "Fiber", "Folate", "Iodine", "Iron", "Magnesium", "Manganese", "Molybdenum", "Niacin", "PantothenicAcid", "Phosphorus", "Potassium", "Protein", "Riboflavin", "Selenium", "Sodium", "Sugar", "Thiamin", "VitaminA", "VitaminB12", "VitaminB6", "VitaminC", "VitaminD", "VitaminE", "VitaminK", "Zinc", "Water"] }}; componentDidMount(){ AppleHealthKit.initHealthKit(options: Object, (err: string, results: Object) => { if (err) { console.log("error initializing Healthkit: ", err); return; } AppleHealthKit.getSleepSamples(options, (err: Object, results: Array<Object>) => { if (err) { console.log(err); return; } console.log(results.length) this.setState({sleep:results.length}) }); }); } 。

.shadowColor

Answer 3

在 Xcode 12.4 中，这是对我有用的组合：

init() {
    UINavigationBar.appearance().shadowImage = UIImage()
    UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .default)
    UINavigationBar.appearance().isTranslucent = false
    UINavigationBar.appearance().barTintColor = UIColor.red
}

Answer 4

SwiftUI，1行。

UINavigationBar.appearance().standardAppearance.shadowColor = .clear

我在.onAppear {}

内部实现了该功能

Answer 5

这对我有用

UINavigationBar.appearance().shadowImage = UIImage()