一、普通View中点击空白处UITextField/UITextView键盘收起
@interface UIViewController (DismissKeyboard)
- (void)setupForDismissKeyboard;
@end
#import "UIViewController+DismissKeyboard.h"
@implementation UIViewController (DismissKeyboard)
- (void)setupForDismissKeyboard {
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
UITapGestureRecognizer *singleTapGR =
[[UITapGestureRecognizer alloc] initWithTarget:self
action:@selector(tapAnywhereToDismissKeyboard:)];
__weak UIViewController *weakSelf = self;
NSOperationQueue *mainQuene =[NSOperationQueue mainQueue];
[nc addObserverForName:UIKeyboardWillShowNotification
object:nil
queue:mainQuene
usingBlock:^(NSNotification *note){
[weakSelf.view addGestureRecognizer:singleTapGR];
}];
[nc addObserverForName:UIKeyboardWillHideNotification
object:nil
queue:mainQuene
usingBlock:^(NSNotification *note){
[weakSelf.view removeGestureRecognizer:singleTapGR];
}];
}
- (void)tapAnywhereToDismissKeyboard:(UIGestureRecognizer *)gestureRecognizer {
//endEditing会将self.view里所有的subview的first responder都resign掉
[self.view endEditing:YES];
//取消第一响应者，可取消所有控件的第一响应。
//[[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];
}
@end
UITableView下Cell中添加TextField注意：textFieldShouldEndEditing不能返回return NO;否则键盘不关闭。
-(BOOL)textFieldShouldEndEditing:(UITextField *)textField {
return YES;
}
二、键盘弹起后self.view上移,避免遮盖UITextField/UITextView
自定义键盘类
//UIInputViewAudioFeedback协议模仿系统按键声音
public class WENumberKeyboardView: UIView, UIInputViewAudioFeedback {
var array = ["1","2","3","4","5","6","7","8","9","00","0","11"]
let keyPadding = 1.0 / UIScreen.mainScreen().scale
let keyWidth = ceil((UIScreen.mainScreen().bounds.size.width - 4.0 / UIScreen.mainScreen().scale) / 3.0)
let keyHeight: CGFloat = 53.0 //键盘高度可自己设定
private weak var locationView: UIKeyInput? //只要准许UIKeyInput协议，例如UITextField
private var timer = NSTimer()
convenience init(locationView: UIKeyInput?) {
self.init(frame: CGRectMake(0, 0, UIScreen.mainScreen().bounds.size.width, ((53.0 + 1.0 / UIScreen.mainScreen().scale) * 4.0)))
self.locationView = locationView
}
override init(frame: CGRect) {
super.init(frame: frame)
self.backgroundColor = UIColor.we_separatorColor()
for i in 0 ... 2 {
for j in 0...3 {
let btn = UIButton()
btn.frame = CGRectMake( CGFloat(i) * (keyWidth + keyPadding) + keyPadding, CGFloat(j) * (keyHeight + keyPadding) + keyPadding, keyWidth, keyHeight)
btn.tag = i + 3 * j
btn.setTitle(array[btn.tag], forState: .Normal)
btn.titleLabel?.font = UIFont.we_cnFont(24)
btn.setTitleColor(UIColor.we_blackColor(), forState: .Normal)
btn.we_setBackgroundColor(UIColor.whiteColor(), state: .Normal)
btn.addTarget(self, action: #selector(WENumberKeyboardView.btnClick(_:)), forControlEvents: .TouchUpInside)
if btn.tag == 11 {
btn.setTitle("", forState: .Normal)
btn.setImage(UIImage(named: "keyboardDelete"), forState: .Normal)
btn.addTarget(self, action: #selector(WENumberKeyboardView.btnClick(_:)), forControlEvents: .TouchDown)
//实现长按删除
let recongnizer = UILongPressGestureRecognizer(target: self, action:#selector(WENumberKeyboardView.longPressDeleteBackward(_:)))
btn.addGestureRecognizer(recongnizer)
}
addSubview(btn)
}
}
}
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func btnClick(btn: UIButton) {
UIDevice.currentDevice().playInputClick()
if btn.tag == 11 {
(locationView as? UITextField)?.deleteBackward()
} else {
(locationView as? UITextField)?.insertText(btn.titleLabel?.text ?? "")
}
}
//长按删除键执行方法，长按手势会返回开始和结束两个状态。
func longPressDeleteBackward(sender: UILongPressGestureRecognizer)
{
if (sender.state == UIGestureRecognizerState.Began) {
//延迟调用删除方法
timer = NSTimer .scheduledTimerWithTimeInterval(0.1, target: self, selector: #selector(WENumberKeyboardView.changetext), userInfo: nil, repeats: true)
timer .fire()
}else if (sender.state == UIGestureRecognizerState.Ended){
timer .invalidate()
}
}
func changetext(){
//删除字符操作
(locationView as? UITextField)?.deleteBackward()
}
}
VC中添加键盘
let keyView = WENumberKeyboardView(locationView: vc.textField)
vc.textField.inputView = keyView
显示和关闭键盘
[textField becomeFirstResponder];
[textField resignFirstResponder];
点击空白处隐藏键盘
[view endEditing:YES]；可以让整个view取消第一响应者，从而让所有控件的键盘隐藏。
设置键盘类型
textView.keyboardType = UIKeyboardTypeDefault;
设置返回键类型
textView.returnKeyType = UIReturnKeyDefault;
自定义键盘
textView.inputView = newView;
textView.inputAccessoryView = newToolView;
UIButton长按事件实现方法
方法一
本文介绍方法
方法二
[btn addTarget:self action:@selector(offsetButtonTouchBegin:)forControlEvents:UIControlEventTouchDown];
[btn addTarget:self action:@selector(offsetButtonTouchEnd:)forControlEvents:UIControlEventTouchUpInside];
[btn addTarget:self action:@selector(offsetButtonTouchEnd:)forControlEvents:UIControlEventTouchUpOutside];
- 自定义键盘处理textfield输入变化的问题
正常情况UITextfield继承与UIControl，可以使用添加addTarget方法，来判断输入状态。
[textField addTarget:self
action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged]; //键盘未落下添加输入框内容发生改变时的事件处理，可用来对键盘输入的位数做限制。
- (void)textFieldDidChange: (UITextField *)textField {
NSLog(@"eventEditing%@",textField.text);
}
在自定义键盘情况下，并不会响应该addTarget方法，需要在键盘点击按钮的触发事件中添加事件调用。
[textField sendActionsForControlEvents:UIControlEventEditingChanged];
主要加法是：
在自定义键盘页
func btnClick(btn: UIButton) {
let textField = locationView as? UITextField
textField?.sendActionsForControlEvents(UIControlEvents.EditingChanged)
}
在VC的textfield上添加addTarget方法。
UITextField的小细节
http://www.cnblogs.com/wujy/p/5807073.html
UIView的Touch事件UIControlEvents详解http://blog.csdn.net/heng615975867/article/details/39321081
https://www.jianshu.com/p/cfb615a1275b
https://www.yuanmas.com/info/EkyQo9lMzv.html
https://www.jianshu.com/p/c446b4d10b73
https://www.cnblogs.com/galaxyyao/archive/2013/05/27/3102261.html
