[英]iOS record video with camera and UILongPressGestureRecognizer
我正在嘗試使用UIImagePickerController
,它允許通過簡單的觸摸拍攝照片並將長時間的視頻錄制為Snapchat。
這是我的UIImagePickerController
子類:
import UIKit
import MobileCoreServices
class ImagePickerController: UIImagePickerController, UIGestureRecognizerDelegate {
var takeButton : UIButton
override init ()
{
takeButton = UIButton ();
super.init()
self.sourceType = UIImagePickerControllerSourceType.Camera
self.allowsEditing = false
self.showsCameraControls = false
self.mediaTypes = [kUTTypeMovie, kUTTypeImage]
self.videoMaximumDuration = 10
self.videoQuality = UIImagePickerControllerQualityType.TypeMedium;
let screenSize: CGRect = UIScreen.mainScreen().bounds
self.cameraOverlayView?.frame = CGRectMake(0, 0, screenSize.width, screenSize.height);
takeButton.frame = CGRectMake(0, 0 , 100, 100)
takeButton.center = CGPointMake(screenSize.width/2, screenSize.height - 60);
takeButton.setImage(UIImage(named: "takeButton.png"), forState: UIControlState.Normal)
takeButton.addTarget(self, action: "takePicture:", forControlEvents: UIControlEvents.TouchUpInside)
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera)
{
let recognizer = UILongPressGestureRecognizer(target: self, action:Selector("holdAction:"))
recognizer.delegate = self
takeButton.addGestureRecognizer(recognizer)
}
self.cameraOverlayView?.clipsToBounds = true;
self.cameraOverlayView?.addSubview(takeButton)
}
func takePicture(sender:UIButton!)
{
self.cameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Photo;
self.takePicture()
}
func holdAction(recognizer: UILongPressGestureRecognizer)
{
self.cameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Video;
if recognizer.state == UIGestureRecognizerState.Began
{
self.startVideoCapture()
println("Video capturing...")
}
else if recognizer.state == UIGestureRecognizerState.Ended
{
self.stopVideoCapture()
println("End recording !");
}
}
required init(coder aDecoder: NSCoder) {
takeButton = UIButton ();
super.init(coder: aDecoder)
}
private override init(nibName nibNameOrNil: String!, bundle nibBundleOrNil: NSBundle!) {
takeButton = UIButton ();
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
}
}
沒有問題的圖片部分,但對於視頻工作,它只是第二次工作。 第一次觸摸時,我總是遇到以下錯誤之一:
Camera: ignoring _previewStarted because waiting for session to be rebuilt
UIImagePickerController: requested to stop video capture before recording stopped
UIImagePickerController: ignoring request to stop video capture; camera is not currently capturing
UIImagePickerController: ignoring request to stop video capture; camera is not currently capturing
視頻
UIImagePickerController:忽略更改攝像頭模式的請求; 相機正在拍攝視頻。
你對我的問題有所了解嗎?
事實上,UIImagePickerController是一個非常高級的API,因此我們必須下拉一個級別並使用AVFoundation並啟動AVCaptureSession來執行此操作。 希望它有所幫助!
有關AVFoundation的快速教程可以在這里找到: http ://jamesonquave.com/blog/taking-control-of-the-iphone-camera-in-ios-8-with-swift-part-1/
由於從raywenderlich.com reidnez!
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.