Show recording how-to at least once after app install

main/Common Classes/Prefs.swift

@@ -33,6 +33,10 @@ extension Prefs {
 			get { Prefs.Bool("didShowTutorialRecordings") }
 			set { Prefs.Bool("didShowTutorialRecordings", newValue) }
 		}
+		static var RecordingHowTo: Bool {
+			get { Prefs.Bool("didShowTutorialRecordingHowTo") }
+			set { Prefs.Bool("didShowTutorialRecordingHowTo", newValue) }
+		}
 	}
 }
 

main/Recordings/VCRecordings.swift

@@ -23,7 +23,15 @@ class VCRecordings: UIViewController, UINavigationControllerDelegate {
 			updateUI(setRecording: false, animated: false)
 		}
 		if !Prefs.DidShowTutorial.Recordings {
-			self.perform(#selector(showTutorial), with: nil, afterDelay: 0.5)
+			DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
+				let x = TutorialSheet()
+				x.addSheet().addArrangedSubview(TinyMarkdown.load("tut-recording-1"))
+				x.addSheet().addArrangedSubview(TinyMarkdown.load("tut-recording-2"))
+				x.buttonTitleDone = "Got it"
+				x.present {
+					Prefs.DidShowTutorial.Recordings = true
+				}
+			}
 		}
 	}
 	
@@ -41,6 +49,15 @@ class VCRecordings: UIViewController, UINavigationControllerDelegate {
 		navigationController?.setNavigationBarHidden(false, animated: animated)
 	}
 	
+	@IBAction private func showInfo(_ sender: UIButton?) {
+		let x = TutorialSheet()
+		x.addSheet().addArrangedSubview(TinyMarkdown.load("tut-recording-howto"))
+		x.buttonTitleDone = "Close"
+		x.present() {
+			Prefs.DidShowTutorial.RecordingHowTo = true
+		}
+	}
+	
 	
 	// MARK: Start New Recording
 	
@@ -53,6 +70,10 @@ class VCRecordings: UIViewController, UINavigationControllerDelegate {
 			}.presentIn(self)
 			return
 		}
+		guard Prefs.DidShowTutorial.RecordingHowTo else {
+			showInfo(nil) // show at least once. Later, user can click the help icon.
+			return
+		}
 		currentRecording = RecordingsDB.startNew()
 		QLog.Debug("start recording #\(currentRecording!.id)")
 		let longterm = sender.selectedSegmentIndex == 1
@@ -120,24 +141,4 @@ class VCRecordings: UIViewController, UINavigationControllerDelegate {
 			stopButton.setTitle(valid ? "Stop" : slow ? "Cancel" : "Discard", for: .normal)
 		}
 	}
-	
-	
-	// MARK: Tutorial View Controller
-	
-	@IBAction private func showInfo(_ sender: UIButton) {
-		let x = TutorialSheet()
-		x.addSheet().addArrangedSubview(TinyMarkdown.load("tut-recording-howto"))
-		x.buttonTitleDone = "Close"
-		x.present()
-	}
-	
-	@objc private func showTutorial() {
-		let x = TutorialSheet()
-		x.addSheet().addArrangedSubview(TinyMarkdown.load("tut-recording-1"))
-		x.addSheet().addArrangedSubview(TinyMarkdown.load("tut-recording-2"))
-		x.buttonTitleDone = "Got it"
-		x.present {
-			Prefs.DidShowTutorial.Recordings = true
-		}
-	}
 }

media/tutorials/tut-recording-howto.md

@@ -1,6 +1,6 @@
 # How to record?
 
-There are two types: app specific recordings and general background activity. The former are usually 3 – 5 minutes long, the latter need to be at least an hour long.
+Before you begin, there are two types of recordings: app specific recordings and general background activity. The former are usually 3 – 5 minutes long, the latter need to be at least an hour long.
 
 ## App recording