ios开发 之 UIResponder详解

        在iOS中UIResponder类是专门用来响应用户的操作处理各种事件的，包括触摸事件(Touch Events)、运动事件(Motion Events)、远程控制事件(Remote Control Events)。我们知道UIApplication、UIView、UIViewController这几个类是直接继承自UIResponder,所以这些类都可以响应事件。当然我们自定义的继承自UIView的View以及自定义的继承自UIViewController的控制器都可以响应事件。本文将详细介绍UIResponder类。

原文地址：http://blog.csdn.net/zeng_zhiming/article/details/71747881

一、使用详解

1、通过响应者链查找视图的视图控制器

/** *  查找视图的视图控制器 * *  @param view 视图 * *  @return 返回视图的控制器 */- (UIViewController *)getControllerFromView:(UIView *)view {    // 遍历响应者链。返回第一个找到视图控制器    UIResponder *responder = view;    while ((responder = [responder nextResponder])){        if ([responder isKindOfClass: [UIViewController class]]){            return (UIViewController *)responder;        }    }    // 如果没有找到则返回nil    return nil;}

       通过响应链查找视图控制器，nextResponder获取下一个响应者，响应者顺序为：

2、设置与取消第一响应者

////  ZMFirstResponderView.m//  ZMResponderDemo////  Created by ZengZhiming on 2017/5/12.//  Copyright © 2017年 菜鸟基地. All rights reserved.//#import "ZMFirstResponderView.h"@implementation ZMFirstResponderView/** 演示设置为第一响应者 */- (void)setBecomeFirstResponder {    // 判断对象是否已经是第一响应者    if ([self isFirstResponder]) {        return;    }    // 判断对象是否允许成为第一响应者    if ([self canBecomeFirstResponder]) {        // 设置成为第一响应者        [self becomeFirstResponder];    }}/** 演示放弃第一响应者 */- (void)setResignFirstResponder {    // 判断对象是否不是第一响应者    if (![self isFirstResponder]) {        return;    }    // 判断对象是否允许放弃第一响应者    if ([self canResignFirstResponder]) {        // 设置放弃第一响应者        [self resignFirstResponder];    }}/** 重写方法，允许对象成为第一响应者 */- (BOOL)canBecomeFirstResponder {    return YES;}@end

      UIView默认不允许设置为第一响应者，因此设置UIView为第一响应者需要重写canBecomeFirstResponder方法并返回YES。 设置为第一响应者后，对象则可以接受远程控制事件进行处理（如耳机线控）。UITextField、UITextView成为第一响应者后会弹出输入键盘，取消第一响应者则会隐藏输入键盘。

3、触摸相关方法，一般用于响应屏幕触摸

/** 手指按下时响应 */- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event {    [super touchesBegan:touches withEvent:event];    NSLog(@"--->手指按下时响应");}/** 手指移动时响应 */- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event {    [super touchesMoved:touches withEvent:event];    NSLog(@"--->手指移动时响应");}/** 手指抬起时响应 */- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event {    [super touchesEnded:touches withEvent:event];    NSLog(@"--->手指抬起时响应");}/** 触摸取消(意外中断, 如:电话, Home键退出等) */- (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event {    [super touchesCancelled:touches withEvent:event];    NSLog(@"--->取消触摸响应");}

4、加速相关方法，一般用于摇一摇、运动事件监听等

/** 开始加速 */- (void)motionBegan:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0) {    [super motionBegan:motion withEvent:event];    NSLog(@"--->开始加速");}/** 结束加速 */- (void)motionEnded:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0) {    [super motionEnded:motion withEvent:event];    NSLog(@"--->结束加速");}/** 加速取消（意外中断, 如:电话, Home键退出等） */- (void)motionCancelled:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0) {    [super motionCancelled:motion withEvent:event];    NSLog(@"--->加速取消");}

5、远程控制方法，一般用于耳机线控

////  ZMAudioView.m//  ZMResponderDemo////  Created by ZengZhiming on 2017/5/12.//  Copyright © 2017年 菜鸟基地. All rights reserved.//#import "ZMAudioView.h"#import <AVFoundation/AVFoundation.h>@implementation ZMAudioView- (instancetype)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        // 启动接受远程事件        [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];        // 设置成为第一响应者        [self becomeFirstResponder];        // 播放一段静音文件，使APP获取音频的控制权        NSURL *audioURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"mute_60s" ofType:@"mp3"]];        AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioURL error:nil];        [audioPlayer play];    }    return self;}/** 允许对象成为第一响应者 */- (BOOL)canBecomeFirstResponder {    return YES;}/** 远程控制事件响应 */- (void)remoteControlReceivedWithEvent:(UIEvent *)receivedEvent {    NSLog(@"--->耳机线控响应");}- (void)dealloc {    // 停止接受远程事件    [[UIApplication sharedApplication] endReceivingRemoteControlEvents];    // 放弃第一响应者    [self resignFirstResponder];}@end

耳机线控要注意三点要素：
（1）启动接受远程事件：[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
（2）设置成为第一响应者（UIViewController，AppDelegate中不需要设置）

// 设置成为第一响应者[self becomeFirstResponder];/** 允许对象成为第一响应者 */- (BOOL)canBecomeFirstResponder {    return YES;}

（3）获取音频的控制权

// 播放一段静音文件，使APP获取音频的控制权NSURL *audioURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"mute_60s" ofType:@"mp3"]];AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioURL error:nil];[audioPlayer play];

6、在UILabel中实现长按菜单（复制、粘贴等）

////  ZMMenuLabel.m//  ZMResponderDemo////  Created by ZengZhiming on 2017/5/15.//  Copyright © 2017年 菜鸟基地. All rights reserved.//#import "ZMMenuLabel.h"@implementation ZMMenuLabel- (instancetype)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        // 启用用户交互        self.userInteractionEnabled = YES;        // 添加长按手势        UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressMenu:)];        longPressGesture.minimumPressDuration = 0.2;        [self addGestureRecognizer:longPressGesture];    }    return self;}/** 允许对象成为第一响应者 */- (BOOL)canBecomeFirstResponder {    return YES;}/** 长按响应 */- (void)longPressMenu:(UILongPressGestureRecognizer *)sender {    if (sender.state == UIGestureRecognizerStateBegan) {        // 设置成为第一响应者        [self becomeFirstResponder];        // 显示菜单        UIMenuController *menuCtrl = [UIMenuController sharedMenuController];        [menuCtrl setTargetRect:self.frame inView:self.superview];        [menuCtrl setMenuVisible:YES animated:YES];    }}/** 返回需要显示的菜单按钮 */- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {    // 只显示复制、粘贴按钮    if (action == @selector(copy:) || action == @selector(paste:)) {        return YES;    }    return NO;}/** 实现复制方法 */- (void)copy:(id)sender {    UIPasteboard *paste = [UIPasteboard generalPasteboard];    paste.string = self.text;}/** 实现粘贴方法 */- (void)paste:(id)sender {    UIPasteboard *paste = [UIPasteboard generalPasteboard];    self.text = paste.string;}@end

为UILabel添加长按菜单需要注意几点：

（1）启用用户交互：self.userInteractionEnabled = YES;

（2）在显示菜单之前设置对象成为第一响应者（UIViewController，AppDelegate中不需要设置）

/** 允许对象成为第一响应者 */- (BOOL)canBecomeFirstResponder {    return YES;}// 设置成为第一响应者[self becomeFirstResponder];

（3）返回菜单需要显示的按钮，并重写实现对应方法

/** 返回需要显示的菜单按钮 */- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {    // 只显示复制、粘贴按钮    if (action == @selector(copy:) || action == @selector(paste:)) {        return YES;    }    return NO;}/** 实现复制方法 */- (void)copy:(id)sender {    UIPasteboard *paste = [UIPasteboard generalPasteboard];    paste.string = self.text;}/** 实现粘贴方法 */- (void)paste:(id)sender {    UIPasteboard *paste = [UIPasteboard generalPasteboard];    self.text = paste.string;}

（4）注册长按手势，显示菜单

// 添加长按手势UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressMenu:)];longPressGesture.minimumPressDuration = 0.2;[self addGestureRecognizer:longPressGesture];/** 长按响应 */- (void)longPressMenu:(UILongPressGestureRecognizer *)sender {    if (sender.state == UIGestureRecognizerStateBegan) {        // 设置成为第一响应者        [self becomeFirstResponder];        // 显示菜单        UIMenuController *menuCtrl = [UIMenuController sharedMenuController];        [menuCtrl setTargetRect:self.frame inView:self.superview];        [menuCtrl setMenuVisible:YES animated:YES];    }}

7、使用NSUndoManager实现画板撤销/重做功能

/** ==============ZMDrawingBoardView.h文件=================== */#import <UIKit/UIKit.h>/** 画板View */@interface ZMDrawingBoardView : UIView@end/** 划线Model */@interface ZMLineModel : NSObject@property (nonatomic) CGPoint begin;@property (nonatomic) CGPoint end;@end/** ==============ZMDrawingBoardView.m文件=================== */#import "ZMDrawingBoardView.h"/** 画板View */@interface ZMDrawingBoardView ()@property (nonatomic, strong) ZMLineModel *currentLine;@property (nonatomic, strong) NSMutableArray<ZMLineModel *> *toucheArray;@end@implementation ZMDrawingBoardView- (instancetype)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        [self initSubView];        self.backgroundColor = [UIColor whiteColor];        self.toucheArray = [NSMutableArray array];    }    return self;}/** 绘制画板 */- (void)drawRect:(CGRect)rect {    // 获得上下文    CGContextRef context = UIGraphicsGetCurrentContext();    // 设置样式    CGContextSetLineCap(context, kCGLineCapSquare);    // 设置宽度    CGContextSetLineWidth(context, 5.0);    // 设置颜色    CGContextSetStrokeColorWithColor(context, [[UIColor redColor] CGColor]);        for (ZMLineModel *line in self.toucheArray) {        // 开始绘制        CGContextBeginPath(context);        // 移动画笔到起点        CGContextMoveToPoint(context, line.begin.x, line.begin.y);        // 添加下一点        CGContextAddLineToPoint(context, line.end.x, line.end.y);        // 绘制完成        CGContextStrokePath(context);    }}/** 划线开始 */- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{    // 标记开始撤销分组    [self.undoManager beginUndoGrouping];        for (UITouch *touch in touches) {        // 记录起始点        CGPoint locTouch = [touch locationInView:self];        _currentLine = [[ZMLineModel alloc] init];        _currentLine.begin = locTouch;        _currentLine.end = locTouch;    }    }/** 划线移动 */- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{    for (UITouch *touch in touches) {        // 添加线条        CGPoint locTouch = [touch locationInView:self];        _currentLine.end = locTouch;        [self addLine:_currentLine];        // 当前线条        _currentLine = [[ZMLineModel alloc] init];        _currentLine.begin = locTouch;        _currentLine.end = locTouch;    }}/** 划线结束 */- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{    // 结束标记撤销分组    [self.undoManager endUndoGrouping];}/** 添加划线 */- (void)addLine:(ZMLineModel *)line{    // 添加划线并重绘画板    [self.toucheArray addObject:line];    [self setNeedsDisplay];    // 注册撤销方法    [[self.undoManager prepareWithInvocationTarget:self] removeLine:line];}/** 移除划线 */- (void)removeLine:(ZMLineModel *)line{    if ([self.toucheArray containsObject:line]) {        // 移除划线并重绘画板        [self.toucheArray removeObject:line];        [self setNeedsDisplay];        // 注册撤销方法        [[self.undoManager prepareWithInvocationTarget:self] addLine:line];    }}/** 撤销按钮点击响应 */- (void)undoButtonAction:(id)sender {    if ([self.undoManager canUndo]) {        [self.undoManager undo];    }}/** 重做按钮点击响应 */- (void)redoButtonAction:(id)sender {    if ([self.undoManager canRedo]) {        [self.undoManager redo];    }}/** 初始化子控件 */- (void)initSubView {    // 撤销按钮    UIButton *undoButton = [UIButton buttonWithType:UIButtonTypeSystem];    undoButton.frame = CGRectMake(0, 64, 70, 50);    [undoButton setTitle:@"undo撤销" forState:UIControlStateNormal];    [undoButton sizeToFit];    [undoButton addTarget:self action:@selector(undoButtonAction:) forControlEvents:UIControlEventTouchUpInside];    [self addSubview:undoButton];    // 重做按钮    UIButton *redoButton = [UIButton buttonWithType:UIButtonTypeSystem];    redoButton.frame = CGRectMake(CGRectGetWidth(self.frame)-70, 64, 70, 50);    [redoButton setTitle:@"redo重做" forState:UIControlStateNormal];    [redoButton sizeToFit];    [redoButton addTarget:self action:@selector(redoButtonAction:) forControlEvents:UIControlEventTouchUpInside];    [self addSubview:redoButton];}@end

实现撤销/重做注意以下几点：

（1）在调用方法时需要添加注册一个对应的撤销方法

// 注册撤销方法[[self.undoManager prepareWithInvocationTarget:self] removeLine:line];

（2）撤销/ 重做只需要调用undoManager中的相应方法即可

/** 撤销按钮点击响应 */- (void)undoButtonAction:(id)sender {    if ([self.undoManager canUndo]) {        [self.undoManager undo];    }}/** 重做按钮点击响应 */- (void)redoButtonAction:(id)sender {    if ([self.undoManager canRedo]) {        [self.undoManager redo];    }}

（3）如果需要多个动作一起撤销则需要标记分组

    // 标记开始撤销分组    [self.undoManager beginUndoGrouping];    // 结束标记撤销分组    [self.undoManager endUndoGrouping];

8、自定义快捷键

////  ZMKeyCommandView.m//  ZMResponderDemo////  Created by ZengZhiming on 2017/5/17.//  Copyright © 2017年 菜鸟基地. All rights reserved.//#import "ZMKeyCommandView.h"@implementation ZMKeyCommandView- (instancetype)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        // 设置成为第一响应者        [self becomeFirstResponder];    }    return self;}/** 允许对象成为第一响应者 */- (BOOL)canBecomeFirstResponder {    return YES;}/** 返回快捷命令数组 */-(NSArray<UIKeyCommand *> *)keyCommands {    return @[             [UIKeyCommand keyCommandWithInput:UIKeyInputEscape modifierFlags:UIKeyModifierShift action:@selector(pressedShiftAndEscapeKey:) discoverabilityTitle:@"自定义[Shift+Esc]快捷键"],             [UIKeyCommand keyCommandWithInput:@"a" modifierFlags:UIKeyModifierShift action:@selector(pressedShiftAndAKey:) discoverabilityTitle:@"自定义[Shift+A]快捷键"]             ];}/** Shift+Esc快捷命令响应 */-(void)pressedShiftAndEscapeKey:(UIKeyCommand *)keyCommand {    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:keyCommand.discoverabilityTitle message:[NSString stringWithFormat:@"按下快捷辅键:[%@]", keyCommand.input] delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];    [alertView show];}/** Shift+A快捷命令响应 */-(void)pressedShiftAndAKey:(UIKeyCommand *)keyCommand {    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:keyCommand.discoverabilityTitle message:[NSString stringWithFormat:@"按下快捷辅键:[%@]", keyCommand.input] delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];    [alertView show];}@end

自定义快捷键需要注意两点：

（1）设置对象成为第一响应者（UIViewController，AppDelegate中不需要设置）

// 设置成为第一响应者[self becomeFirstResponder];/** 允许对象成为第一响应者 */- (BOOL)canBecomeFirstResponder {    return YES;}

（2）重写keyCommands返回快捷命令组合

/** 返回快捷命令数组 */-(NSArray<UIKeyCommand *> *)keyCommands {    return @[             [UIKeyCommand keyCommandWithInput:UIKeyInputEscape modifierFlags:UIKeyModifierShift action:@selector(pressedShiftAndEscapeKey:) discoverabilityTitle:@"自定义[Shift+Esc]快捷键"],             [UIKeyCommand keyCommandWithInput:@"a" modifierFlags:UIKeyModifierShift action:@selector(pressedShiftAndAKey:) discoverabilityTitle:@"自定义[Shift+A]快捷键"]             ];}

9、自定义UITextField输入键盘 

////  ZMCustomInputView.m//  ZMResponderDemo////  Created by ZengZhiming on 2017/5/18.//  Copyright © 2017年 菜鸟基地. All rights reserved.//#import "ZMCustomInputView.h"#define MAIN_SCREEN_WIDTH [[UIScreen mainScreen] bounds].size.width   //!< 屏幕的Width@interface ZMCustomInputView ()@property (nonatomic, strong) UITextField *textField;@property (nonatomic, strong) UIView *customInputView;@property (nonatomic, strong) UIToolbar *customAccessoryView;@end@implementation ZMCustomInputView- (instancetype)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        // 添加TextField        [self addSubview:self.textField];    }    return self;}/** 懒加载textField */- (UITextField *)textField {    if (!_textField) {        // 初始化textField        _textField = [[UITextField alloc]initWithFrame:CGRectMake(50, 100, MAIN_SCREEN_WIDTH - 100, 30)];        _textField.borderStyle = UITextBorderStyleRoundedRect;        _textField.placeholder = @"测试";        // 设置自定义键盘View        _textField.inputView = self.customInputView;        _textField.inputAccessoryView = self.customAccessoryView;    }    return _textField;}/** 懒加载customInputView */- (UIView *)customInputView {    if (!_customInputView) {        _customInputView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, MAIN_SCREEN_WIDTH, 220)];        _customInputView.backgroundColor = [UIColor lightGrayColor];        UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 100, MAIN_SCREEN_WIDTH, 40)];        label.textAlignment = NSTextAlignmentCenter;        label.text = @"自定义inputView";        [_customInputView addSubview:label];    }    return _customInputView;}/** 懒加载customAccessoryView */- (UIToolbar *)customAccessoryView {    if (!_customAccessoryView) {        _customAccessoryView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, MAIN_SCREEN_WIDTH, 40)];        _customAccessoryView.barTintColor = [UIColor orangeColor];        UIBarButtonItem *space = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];        UIBarButtonItem *done = [[UIBarButtonItem alloc]initWithTitle:@"完成" style:UIBarButtonItemStyleDone target:self action:@selector(done)];        [_customAccessoryView setItems:@[space, space, done]];    }    return _customAccessoryView;}/** 响应完成按钮 */- (void)done {    [self.textField resignFirstResponder];}@end

二、UIResponder.h详解

////  UIResponder.h//  ZMHeaderFile////  Created by ZengZhiming on 2017/4/18.//  Copyright © 2017年 菜鸟基地. All rights reserved.////  详解 UIResponder.h//  Version iOS 10.3//#import <Foundation/Foundation.h>#import <UIKit/UIKitDefines.h>#import <UIKit/UIEvent.h>NS_ASSUME_NONNULL_BEGIN@class UIPress;@class UIPressesEvent;#pragma mark - UIResponderStandardEditActions协议定义@protocol UIResponderStandardEditActions <NSObject>@optional/** 剪切事件 */- (void)cut:(nullable id)sender NS_AVAILABLE_IOS(3_0);/** 复制事件 */- (void)copy:(nullable id)sender NS_AVAILABLE_IOS(3_0);/** 粘贴事件 */- (void)paste:(nullable id)sender NS_AVAILABLE_IOS(3_0);/** 选择事件 */- (void)select:(nullable id)sender NS_AVAILABLE_IOS(3_0);/** 全选事件 */- (void)selectAll:(nullable id)sender NS_AVAILABLE_IOS(3_0);/** 删除事件 */- (void)delete:(nullable id)sender NS_AVAILABLE_IOS(3_2);/** 从左到右写入字符串(居左) */- (void)makeTextWritingDirectionLeftToRight:(nullable id)sender NS_AVAILABLE_IOS(5_0);/** 从右到左写入字符串(居右) */- (void)makeTextWritingDirectionRightToLeft:(nullable id)sender NS_AVAILABLE_IOS(5_0);/** 切换字体为黑体(粗体) */- (void)toggleBoldface:(nullable id)sender NS_AVAILABLE_IOS(6_0);/** 切换字体为斜体 */- (void)toggleItalics:(nullable id)sender NS_AVAILABLE_IOS(6_0);/** 给文字添加下划线 */- (void)toggleUnderline:(nullable id)sender NS_AVAILABLE_IOS(6_0);/** 增加字体大小 */- (void)increaseSize:(nullable id)sender NS_AVAILABLE_IOS(7_0);/** 减小字体大小 */- (void)decreaseSize:(nullable id)sender NS_AVAILABLE_IOS(7_0);@end#pragma mark - UIResponder类定义NS_CLASS_AVAILABLE_IOS(2_0) @interface UIResponder : NSObject <UIResponderStandardEditActions>#pragma mark - 响应者相关方法/** 获取下一个响应者 */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic, readonly, nullable) UIResponder *nextResponder;#else- (nullable UIResponder *)nextResponder;#endif/** 是否允许成为第一响应者。默认返回NO */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic, readonly) BOOL canBecomeFirstResponder;#else- (BOOL)canBecomeFirstResponder;#endif/** 设置成为第一响应者 */- (BOOL)becomeFirstResponder;/** 是否允许放弃第一响应者。默认返回YES */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic, readonly) BOOL canResignFirstResponder;#else- (BOOL)canResignFirstResponder;#endif/** 设置放弃第一响应者 */- (BOOL)resignFirstResponder;/** 判断对象是否是第一响应者 */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic, readonly) BOOL isFirstResponder;#else- (BOOL)isFirstResponder;#endif#pragma mark - 触摸相关方法，一般用于响应屏幕触摸/** 手指按下时响应 */- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event;/** 手指移动时响应 */- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event;/** 手指抬起时响应 */- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event;/** 取消(意外中断, 如:电话, 系统警告窗等) */- (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event;/** 3DTouch响应(iOS9.1后使用) */- (void)touchesEstimatedPropertiesUpdated:(NSSet<UITouch *> *)touches NS_AVAILABLE_IOS(9_1);#pragma mark - 深按相关方法，一般用于遥控器按键响应/** 手指按压开始时响应 */- (void)pressesBegan:(NSSet<UIPress *> *)presses withEvent:(nullable UIPressesEvent *)event NS_AVAILABLE_IOS(9_0);/** 手指按压位置移动时响应 */- (void)pressesChanged:(NSSet<UIPress *> *)presses withEvent:(nullable UIPressesEvent *)event NS_AVAILABLE_IOS(9_0);/** 手指抬起接受按压时响应 */- (void)pressesEnded:(NSSet<UIPress *> *)presses withEvent:(nullable UIPressesEvent *)event NS_AVAILABLE_IOS(9_0);/** 按压取消(意外中断, 如:电话, 系统警告窗等) */- (void)pressesCancelled:(NSSet<UIPress *> *)presses withEvent:(nullable UIPressesEvent *)event NS_AVAILABLE_IOS(9_0);#pragma mark - 加速相关方法，一般用于摇一摇、运动事件监听等/** 开始加速 */- (void)motionBegan:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);/** 结束加速 */- (void)motionEnded:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);/** 加速取消（意外中断, 如:电话, 系统警告窗等） */- (void)motionCancelled:(UIEventSubtype)motion withEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(3_0);/** 远程控制事件 */- (void)remoteControlReceivedWithEvent:(nullable UIEvent *)event NS_AVAILABLE_IOS(4_0);/** 返回UIMenuController需要显示的控件(如：复制，粘贴等) */- (BOOL)canPerformAction:(SEL)action withSender:(nullable id)sender NS_AVAILABLE_IOS(3_0);/** 返回响应的操作目标对象 */- (nullable id)targetForAction:(SEL)action withSender:(nullable id)sender NS_AVAILABLE_IOS(7_0);/** 获取响应链就近共享撤消管理 */@property(nullable, nonatomic,readonly) NSUndoManager *undoManager NS_AVAILABLE_IOS(3_0);@end/** 快捷主键枚举 */typedef NS_OPTIONS(NSInteger, UIKeyModifierFlags) {    UIKeyModifierAlphaShift     = 1 << 16,  //!< Alpha+Shift键.    UIKeyModifierShift          = 1 << 17,  //!< Shift键.    UIKeyModifierControl        = 1 << 18,  //!< Control键.    UIKeyModifierAlternate      = 1 << 19,  //!< Alt键.    UIKeyModifierCommand        = 1 << 20,  //!< Command键.    UIKeyModifierNumericPad     = 1 << 21,  //!< Num键.} NS_ENUM_AVAILABLE_IOS(7_0);#pragma mark - 快捷键对象NS_CLASS_AVAILABLE_IOS(7_0) @interface UIKeyCommand : NSObject <NSCopying, NSSecureCoding>/** 初始化对象 */- (instancetype)init NS_DESIGNATED_INITIALIZER;/** 初始化对象 */- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder NS_DESIGNATED_INITIALIZER;/** 获取快捷辅键（如快捷命令【Command+A】中的 A 键） */@property (nonatomic,readonly) NSString *input;/** 获取快捷主键（如快捷命令【Command+A】中的 Command 键） */@property (nonatomic,readonly) UIKeyModifierFlags modifierFlags;/** 显示给用户的快捷键标题 */@property (nullable,nonatomic,copy) NSString *discoverabilityTitle NS_AVAILABLE_IOS(9_0);/** 创建一个快捷键命令 */+ (UIKeyCommand *)keyCommandWithInput:(NSString *)input modifierFlags:(UIKeyModifierFlags)modifierFlags action:(SEL)action;/** 创建一个快捷键命令 */+ (UIKeyCommand *)keyCommandWithInput:(NSString *)input modifierFlags:(UIKeyModifierFlags)modifierFlags action:(SEL)action discoverabilityTitle:(NSString *)discoverabilityTitle NS_AVAILABLE_IOS(9_0);@end#pragma mark - 响应快捷命令@interface UIResponder (UIResponderKeyCommands)/** 返回快捷键命令数组 */@property (nullable,nonatomic,readonly) NSArray<UIKeyCommand *> *keyCommands NS_AVAILABLE_IOS(7_0);@end@class UIInputViewController;@class UITextInputMode;@class UITextInputAssistantItem;#pragma mark - 输入视图@interface UIResponder (UIResponderInputViewAdditions)/** 键盘输入视图(系统默认的,可以自定义) */@property (nullable, nonatomic, readonly, strong) __kindof UIView *inputView NS_AVAILABLE_IOS(3_2);/** 弹出键盘时附带的视图 */@property (nullable, nonatomic, readonly, strong) __kindof UIView *inputAccessoryView NS_AVAILABLE_IOS(3_2);/** 输入助手配置键盘的快捷方式栏时使用 */@property (nonnull, nonatomic, readonly, strong) UITextInputAssistantItem *inputAssistantItem NS_AVAILABLE_IOS(9_0) __TVOS_PROHIBITED __WATCHOS_PROHIBITED;/** 键盘输入视图控制器 */@property (nullable, nonatomic, readonly, strong) UIInputViewController *inputViewController NS_AVAILABLE_IOS(8_0);/** 弹出键盘时附带的视图的视图控制器 */@property (nullable, nonatomic, readonly, strong) UIInputViewController *inputAccessoryViewController NS_AVAILABLE_IOS(8_0);/** 文本输入模式 */@property (nullable, nonatomic, readonly, strong) UITextInputMode *textInputMode NS_AVAILABLE_IOS(7_0);/** 文本输入模式标识 */@property (nullable, nonatomic, readonly, strong) NSString *textInputContextIdentifier NS_AVAILABLE_IOS(7_0);/** 根据设置的标识清除指定的文本输入模式 */+ (void)clearTextInputContextIdentifier:(NSString *)identifier NS_AVAILABLE_IOS(7_0);/** 重新刷新键盘输入视图 */- (void)reloadInputViews NS_AVAILABLE_IOS(3_2);@end/** 特殊快捷辅键定义 */UIKIT_EXTERN NSString *const UIKeyInputUpArrow         NS_AVAILABLE_IOS(7_0); //!< 上按键.UIKIT_EXTERN NSString *const UIKeyInputDownArrow       NS_AVAILABLE_IOS(7_0); //!< 下按键.UIKIT_EXTERN NSString *const UIKeyInputLeftArrow       NS_AVAILABLE_IOS(7_0); //!< 左按键.UIKIT_EXTERN NSString *const UIKeyInputRightArrow      NS_AVAILABLE_IOS(7_0); //!< 右按键UIKIT_EXTERN NSString *const UIKeyInputEscape          NS_AVAILABLE_IOS(7_0); //!< Esc按键.#pragma mark - 响应者活动@interface UIResponder (ActivityContinuation)/** 用户活动 */@property (nullable, nonatomic, strong) NSUserActivity *userActivity NS_AVAILABLE_IOS(8_0);/** 更新用户活动 */- (void)updateUserActivityState:(NSUserActivity *)activity NS_AVAILABLE_IOS(8_0);/** 恢复用户活动 */- (void)restoreUserActivityState:(NSUserActivity *)activity NS_AVAILABLE_IOS(8_0);@endNS_ASSUME_NONNULL_END

Demo地址：https://github.com/zeng-zhiming/ZMResponderDemo

 原文地址：http://blog.csdn.net/zeng_zhiming/article/details/71747881