如何解决快速获取tableview单元格值nil
我有3个部分的表格视图。每个部分都有一行。在我的模拟器屏幕上,仅显示2个部分。如果我滚动表格视图,将显示第三个单元格。有一个保存按钮,通过单击它我正在将数据传递到另一个视图控制器。如果我不滚动表格视图并单击“保存”按钮,则第三部分的单元格为nil。
我的代码是:-
let indexPath = IndexPath(row: 0,section: 0)
let indexPath1 = IndexPath(row: 0,section: 1)
let indexPath2 = IndexPath(row: 0,section: 2)
let cell1 = tableView.cellForRow(at: indexPath) as? PatientInformationTableViewCell
let cell2 = tableView.cellForRow(at: indexPath1) as? PatientAdressTableViewCell
let cell3 = tableView.cellForRow(at: indexPath2) as? OtherInfoTableViewCell
guard let name = nameTextField.text,let id = cell1.patientTextField.text,let dob = cell1.dobTextField.text,let street = cell1.streetAdressTextField.text,let city = cell2.cityTextField.text,let state = cell2.stateTextField.text,let zip = cell2.zipTextField.text,let country = cell2.CountryTextField.text,let practioner = cell3.practionerTextField.text,let lcode = cell3.lcodeTextField.text,let qty = cell3.qtyTextField.text,let prescription = cell3.PrescriptionTextView.text,let klLevel = cell3.kLevelTextField.text,let deviceType = cell3.deviceTypeTextField.text,let guardian = cell3.guardianTextField.text,let relationship = cell3.relationshipwithPatient.text
else {
return
}
let patient = PatientInformationModel(name: name,id: id,dob: dob,streetAdress: street,city: city,state: state,zip: zip,country: country,klevel: klLevel,deviceType: deviceType,visitType: "visitType",deliveryLocation: "deliveryLocation",lCode: lcode,qty: qty,descripePrescription: prescription,practioner: practioner,guardian: guardian,relationship: relationship)
let encoder = JSONEncoder()
if let encoded = try? encoder.encode(patient) {
let defaults = UserDefaults.standard
defaults.set(encoded,forKey: "SavedPerson")
}
if let storyBoard = UIStoryboard(name: "Pdf",bundle: nil) as? UIStoryboard{
captureSignature { (sign) in
signatureImage = sign?.image
print("signature image is \(signatureImage)")
}
let PatientListViewController = storyBoard.instantiateViewController(identifier: "GeneratePdfViewController") as? GeneratePdfViewController
PatientListViewController?.signatureImage = signatureImage
self.navigationController?.pushViewController(PatientListViewController!,animated: true)
}
在上面的代码中,如果我单击保存按钮而不滚动到底部,我将得到cell3值nil。是否有任何结果。请帮助我。
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