安装cocoapods并添加pod "SwiftCarousel"到pod文件并取消注释平台之后:ios,'9.0'我得到了这个错误
ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES
我该怎么办？
mohammed.elias$ pod install
Analyzing dependencies
Downloading dependencies
Installing SwiftCarousel (0.8.0)
Generating Pods project
Integrating client project
[!] Please close any current Xcode sessions and use `scrollView.xcworkspace` for this project from now on.
Sending stats
Pod installation complete! There is 1 dependency from the Podfile and 1 total pod installed.
[!] The `scrollViewTests [Debug]` target overrides the `ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES` build setting defined in `Pods/Target Support Files/Pods-scrollViewTests/Pods-scrollViewTests.debug.xcconfig'. This can lead to problems with the CocoaPods installation
- …我尝试了类似问题的每个解决方案:
最近,我从ubuntu转移到Mac,我试图在Sierra上安装mysql gem,之后我安装了Ruby,Rails,Mysql,
我也打字brew install mysql,它适用于下载mysql,但不是宝石,所以我的问题不相似.
我输入了这个 mysql --version
我得到了 mysql Ver 14.14 Distrib 5.7.16, for osx10.12 (x86_64) using EditLine wrapper
我试图安装mysql2 gem for rails来构建一个新的应用程序
我输入了这个sudo gem install mysql2并得到了这个错误:
Password:
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
current directory: /Users/mohammed.elias/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/mysql2-0.4.5/ext/mysql2
/Users/mohammed.elias/.rbenv/versions/2.4.0/bin/ruby -r ./siteconf20170102-2045-18gcs95.rb extconf.rb
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for …我有UIViewController,我在故事板中添加了一个UITableView,后来我在视图中添加了一个向上滑动手势识别器,但没有任何反应.
这是我的代码
import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UIGestureRecognizerDelegate {
@IBOutlet weak var tableview: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let swipeRegongnizer = UISwipeGestureRecognizer(target: self, action: #selector(self.handleSwipeUp))
swipeRegongnizer.direction = UISwipeGestureRecognizerDirection.up
swipeRegongnizer.delegate = self
tableview.addGestureRecognizer(swipeRegongnizer)
}
func handleSwipeUp(gesture: UISwipeGestureRecognizer) {
print("swiped up")
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 100
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let …我已经编写了这个自定义 UIView 类来绘制自定义形状
class ShapeView: UIView {
var color: UIColor?
init(frame: CGRect, color: UIColor) {
super.init(frame: frame)
self.color = color
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func draw(_ rect: CGRect) {
super.draw(rect)
drawShape(rect: rect, color: self.color!)
}
func drawShape(rect: CGRect,color: UIColor) {
guard let ctx = UIGraphicsGetCurrentContext() else { return }
ctx.setFillColor(UIColor.clear.cgColor)
ctx.beginPath()
ctx.move(to: CGPoint(x: rect.width / 2, y: 0))
ctx.addLine(to: CGPoint(x: rect.width, y: rect.height / 2))
ctx.addLine(to: CGPoint(x: rect.width / 2 , …我正在使用我们所有人的已知动画,动画更改导航栏的背景图像,延迟时间将其从半透明(我将其设为默认值)更改为(蓝色主题).
UIView.animate(withDuration:0.5,
delay: 0,
option: UIViewAnimationOptions.curveEaseOut,
animations: {
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
}, completion: nil)
但动画没有用,但导航栏的背景图像改变成功,我不知道为什么!!
有任何想法吗？
我正在尝试更改动画所在的 CABasicAnimation 的 toValue/fromValue 的值 heartBeatAnimation
let heartBeatAnimation = CABasicAnimation(keyPath: "transform.scale.xy")
heartBeatAnimation.duration = 0.75
heartBeatAnimation.repeatCount = Float.infinity
heartBeatAnimation.autoreverses = true
heartBeatAnimation.fromValue = 1.0
heartBeatAnimation.toValue = 1.15
当动画打开时，我transform.scale在动画期间获取当前值：
let currentValue = someView.layer.presentation()?.value(forKeyPath: "transform.scale")
heartBeatAnimation.fromValue = currentValue
heartBeatAnimation.toValue = currentValue
更改值后，在删除动画然后再次添加之前heartBeatAnimation不会更改它toValue/fromValue！
有没有办法在动画播放时实时进行这些更改？！