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我想将图像放入使用GLKView绘制图像的UITableViewCell中。GLKView绘制时为空
我有一个故事板中的原型单元格,其中有一个GLKView。它没有选中Enable setNeedsDisplay。
原型电池有所谓的PhotoTableViewCell一个自定义的类,这是
import UIKit
import GLKit
class PhotoTableViewCell: UITableViewCell {
var eaglContext:EAGLContext!
var ciContext:CIContext!
var myImage:CIImage!
@IBOutlet weak var photoGlView: GLKView!
@IBOutlet weak var timeLabel: UILabel!
@IBOutlet weak var cameraLabel: UILabel!
@IBOutlet weak var notesLabel: UILabel!
override func layoutSubviews() {
self.photoGlView.delegate = self
}
}
extension PhotoTableViewCell: GLKViewDelegate {
override func draw(_ rect: CGRect) {
let drawableRectSize = CGSize(width: 200, height: 200)// width: photoGlView.drawableWidth, height: photoGlView.drawableHeight)
let drawableRect = CGRect(origin: CGPoint.zero, size: drawableRectSize)
print("rect ->\(drawableRect)")
print("rect size -> \(drawableRectSize)")
ciContext.draw(myImage, in: drawableRect, from: myImage.extent)
print("drawing rect my image =\(photoGlView)")
}
func glkView(_ view: GLKView, drawIn rect: CGRect) {
let drawableRectSize = CGSize(width: view.drawableWidth, height: view.drawableHeight)
let drawableRect = CGRect(origin: CGPoint.zero, size: drawableRectSize)
ciContext.draw(myImage, in: drawableRect, from: myImage.extent)
print("drawing")
}
}
这一个UITableViewController
class PhotosTableViewController: UITableViewController {
var cameraId:Int = 1
var photos:[Photo] = []
var eaglContext:EAGLContext!
var ciContext:CIContext!
override func viewDidLoad() {
super.viewDidLoad()
self.eaglContext = EAGLContext(api: .openGLES2)
self.ciContext = CIContext(eaglContext: eaglContext!)
}
....
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "photoCell") as! PhotoTableViewCell
let photo = photos[indexPath.row]
if let image = photo.getLightImage() {
cell.ciContext = ciContext
cell.eaglContext = eaglContext
cell.myImage = image
cell.photoGlView.display()
}
cell.cameraLabel.text = AppService.shared.getCameraName(id: photo.cameraId)
cell.timeLabel.text = "Taken: \(photo.uploaded?.niceTime() ?? "")"
return cell
}
用来当我浏览到的TableView我得到以下日志语句
rect ->(0.0, 0.0, 200.0, 200.0)
rect size -> (200.0, 200.0)
drawing rect my image =Optional(<GLKView: 0x1560bed0; frame = (0 0; 191 253); clipsToBounds = YES; opaque = NO; autoresize = RM+BM; tintColor = UIDeviceRGBColorSpace 0 0 0 1; layer = <CAEAGLLayer: 0x1560e530>>)
rect ->(0.0, 0.0, 200.0, 200.0)
rect size -> (200.0, 200.0)
drawing rect my image =Optional(<GLKView: 0x156044f0; frame = (0 0; 191 253); clipsToBounds = YES; opaque = NO; autoresize = RM+BM; tintColor = UIDeviceRGBColorSpace 0 0 0 1; layer = <CAEAGLLayer: 0x15604610>>)
我的问题是为什么它的视图空白?我相信有一个图像,glkView是在正确的地方(我已经检查了Xcode中的预览工具)
为什么绘制(rect :)被调用,而不是glkView(视图:GLKView, drawRect:CGRect)?
我使用5运行iOS 9.3的iPhone的Xcode 8,快捷3,任何帮助非常感谢
嘿马克。你解决了吗? –
不,仍然无法正常工作 –