目前我面临着在颤振中创建响应式设计的问题,因此它可以在所有屏幕尺寸上以相同的外观和感觉正常工作
目前我需要像下图一样创建,我需要图像的中心(下图中的红色)与另一个(蓝色大图像)的底部对齐,有时红色居中但在不同的屏幕尺寸,它要么向上一点,要么向下一点。
这是我的尝试:
class ImageAssetUtils
{
static Image drawImage(String imagePath, double requiredWidth, double requiredHeight)
{
double screenFactor = 1.0;
screenFactor = ScreenSize.isSmallScreenSize(myApp.navigatorState.currentContext) ? 0.8 : screenFactor;
screenFactor = ScreenSize.isLargeScreenSize(myApp.navigatorState.currentContext) ? 1.21 : screenFactor;
requiredWidth = requiredWidth * screenFactor;
requiredHeight = requiredHeight * screenFactor;
return new Image.asset(imagePath, width: requiredWidth, height: requiredHeight);
}
}
class StyleUtils
{
static EdgeInsets givePadding(EdgeInsets absoluteEdges)
{
double screenFactor = 1.0;
screenFactor = ScreenSize.isSmallScreenSize(myApp.navigatorState.currentContext) ? 0.75 : screenFactor;
screenFactor = ScreenSize.isLargeScreenSize(myApp.navigatorState.currentContext) ? 1.14 : screenFactor; …
Run Code Online (Sandbox Code Playgroud) 目前,我已经picker
包含在 aSection
中Form
,我想要达到的目标是将所选值picker
与 iOS 13 和 14 中的前导对齐,我已经尝试了许多解决方案,例如labelsHidden()
但没有结果,请找到在 iOS 14 上生成以下屏幕截图的代码示例,任何帮助将不胜感激
struct ContentView: View {
@State private var selectedStrength = "Mild"
let strengths = ["Mild", "Medium", "Mature"]
var body: some View {
NavigationView {
Form {
Section {
Picker("", selection: $selectedStrength) {
ForEach(strengths, id: \.self) {
Text($0)
}
}
}
}
}
}
}
Run Code Online (Sandbox Code Playgroud) 目前我正在将一个类从 Objective-C 翻译成 Apple Swift,但不幸的是,我不知道 Objective-C,所以将以下函数的签名从 Objective-C 翻译成 Swift 有什么帮助吗?
- (void)playbackSession:(id<BCOVPlaybackSession>)session didReceiveLifecycleEvent:(BCOVPlaybackSessionLifecycleEvent *)lifecycleEvent
Run Code Online (Sandbox Code Playgroud) flutter ×1
ios ×1
ios14 ×1
methods ×1
objective-c ×1
signature ×1
swift ×1
swiftui ×1
swiftui-form ×1