我如何通过iPhone键盘上的“下一步”按钮浏览所有的文本字段?
最后一个文本字段应该关闭键盘。
我已经设置了IB按钮(下一步/完成),但现在我卡住了。
我实现了textFieldShouldReturn动作,但现在下一步和完成按钮关闭键盘。
我如何通过iPhone键盘上的“下一步”按钮浏览所有的文本字段?
最后一个文本字段应该关闭键盘。
我已经设置了IB按钮(下一步/完成),但现在我卡住了。
我实现了textFieldShouldReturn动作,但现在下一步和完成按钮关闭键盘。
当前回答
我刚刚创建了新的Pod处理这些东西GNTextFieldsCollectionManager。它自动处理下一个/最后一个textField问题,非常容易使用:
[[GNTextFieldsCollectionManager alloc] initWithView:self.view];
抓取所有的文本字段排序出现在视图层次结构(或标签),或者你可以指定自己的文本字段数组。
其他回答
解决方案在Swift 3.1,连接你的文本字段IBOutlets设置你的文本字段委托在viewDidLoad,然后在textFieldShouldReturn导航你的动作
class YourViewController: UIViewController,UITextFieldDelegate {
@IBOutlet weak var passwordTextField: UITextField!
@IBOutlet weak var phoneTextField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
self.passwordTextField.delegate = self
self.phoneTextField.delegate = self
// Set your return type
self.phoneTextField.returnKeyType = .next
self.passwordTextField.returnKeyType = .done
}
func textFieldShouldReturn(_ textField: UITextField) -> Bool{
if textField == self.phoneTextField {
self.passwordTextField.becomeFirstResponder()
}else if textField == self.passwordTextField{
// Call login api
self.login()
}
return true
}
}
我已经添加到PeyloW的答案,以防你想实现一个previous/next按钮功能:
- (IBAction)moveThroughTextFields:(UIBarButtonItem *)sender
{
NSInteger nextTag;
UITextView *currentTextField = [self.view findFirstResponderAndReturn];
if (currentTextField != nil) {
// I assigned tags to the buttons. 0 represent prev & 1 represents next
if (sender.tag == 0) {
nextTag = currentTextField.tag - 1;
} else if (sender.tag == 1) {
nextTag = currentTextField.tag + 1;
}
}
// Try to find next responder
UIResponder* nextResponder = [self.view viewWithTag:nextTag];
if (nextResponder) {
// Found next responder, so set it.
// I added the resign here in case there's different keyboards in place.
[currentTextField resignFirstResponder];
[nextResponder becomeFirstResponder];
} else {
// Not found, so remove keyboard.
[currentTextField resignFirstResponder];
}
}
你像这样子类化UIView:
@implementation UIView (FindAndReturnFirstResponder)
- (UITextView *)findFirstResponderAndReturn
{
for (UITextView *subView in self.subviews) {
if (subView.isFirstResponder){
return subView;
}
}
return nil;
}
@end
这对我在Xamarin很有效。iOS / Monotouch。 将键盘按钮更改为Next,将控件传递给下一个UITextField,并将键盘隐藏在最后一个UITextField之后。
private void SetShouldReturnDelegates(IEnumerable<UIView> subViewsToScout )
{
foreach (var item in subViewsToScout.Where(item => item.GetType() == typeof (UITextField)))
{
(item as UITextField).ReturnKeyType = UIReturnKeyType.Next;
(item as UITextField).ShouldReturn += (textField) =>
{
nint nextTag = textField.Tag + 1;
var nextResponder = textField.Superview.ViewWithTag(nextTag);
if (null != nextResponder)
nextResponder.BecomeFirstResponder();
else
textField.Superview.EndEditing(true);
//You could also use textField.ResignFirstResponder();
return false; // We do not want UITextField to insert line-breaks.
};
}
}
在ViewDidLoad里面你会有:
如果你的TextFields没有标签设置它现在:
txtField1.Tag = 0;
txtField2.Tag = 1;
txtField3.Tag = 2;
//...
只是一个电话
SetShouldReturnDelegates(yourViewWithTxtFields.Subviews.ToList());
//If you are not sure of which view contains your fields you can also call it in a safer way:
SetShouldReturnDelegates(txtField1.Superview.Subviews.ToList());
//You can also reuse the same method with different containerViews in case your UITextField are under different views.
一种更安全、更直接的方式,假设:
文本字段委托被设置为你的视图控制器 所有文本字段都是同一视图的子视图 文本字段的标签按照你想要进行的顺序(例如,textField2. txt)。标签= 2,textField3。Tag = 3,等等) 当你点击键盘上的返回按钮时,就会移动到下一个文本字段(你可以将此更改为next, done等)。 您希望键盘在最后一个文本字段之后被取消
斯威夫特4.1:
extension ViewController: UITextFieldDelegate {
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
let nextTag = textField.tag + 1
guard let nextTextField = textField.superview?.viewWithTag(nextTag) else {
textField.resignFirstResponder()
return false
}
nextTextField.becomeFirstResponder()
return false
}
}
下面是一个swift3版本的Anth0的答案。我把它贴在这里,以帮助任何想要利用他的伟大答案的敏捷开发人员!当您设置关联对象时,我擅自添加了一个返回键类型“Next”。
extension UITextField {
@nonobjc static var NextHashKey: UniChar = 0
var nextTextField: UITextField? {
get {
return objc_getAssociatedObject(self,
&UITextField.NextHashKey) as? UITextField
}
set(next) {
self.returnKeyType = UIReturnKeyType.next
objc_setAssociatedObject(self,
&UITextField.NextHashKey,next,.OBJC_ASSOCIATION_RETAIN_NONATOMIC)
}
}
}
下面是另一个扩展,它显示了使用上述代码循环遍历UITextFields列表的可能性。
extension UIViewController: UITextFieldDelegate {
public func textFieldShouldReturn(_ textField: UITextField) -> Bool {
guard let next = textField.nextTextField else {
textField.resignFirstResponder()
return true
}
next.becomeFirstResponder()
return false
}
}
然后在你的ViewController或者其他地方,你可以像这样设置你的文本框。
@IBOutlet fileprivate weak var textfield1: UITextField!
@IBOutlet fileprivate weak var textfield2: UITextField!
@IBOutlet fileprivate weak var textfield3: UITextField!
...
[textfield1, textfield2, textfield3].forEach{ $0?.delegate = self }
textfield1.nextTextField = textfield2
textfield2.nextTextField = textfield3
// We don't assign a nextTextField to textfield3 because we want
// textfield3 to be the last one and resignFirstResponder when
// the return button on the soft keyboard is tapped.